Pub Date : 2022-07-25DOI: 10.52088/ijesty.v2i3.301
Hendri Syahputra, Alfitra Alfitra
The government's role in providing social assistance to reduce poverty has been going very well. However, in practice, there are obstacles to collecting and verifying data on prospective beneficiaries, so fast, precise, and accurate information is needed through the participation of the Community or Community to provide information regarding potential beneficiaries—social assistance. This study's goal is to create and develop a model of the Volunteered Geographic Information (VGI) system involving the participation of the Community to determine the effectiveness of the distribution of social assistance by the government and to support the role of a transparent government or good government. This research method is descriptive research with quantitative and qualitative descriptive approaches. This system also refers to the design, development, and stages of the VGI system process suitable for a crowd or community-based approach. The expected result is a VGI-based geographic information system: First: Collect and observe data on social assistance recipients in Aceh Tengah district, Aceh Province. Second: Designing and implementing a VGI-based geographic information system. Third: System testing through two stages: system functional and non-functional testing. The final results of this research are a web-based VGI Social Assistance system model and, for volunteers, the Android-based VGI Social Assistance application.
{"title":"Infrastructure Model Volunteered Geographic Infor-mation Social Assistance Program To Support eGovernment Case Study of Central Aceh District","authors":"Hendri Syahputra, Alfitra Alfitra","doi":"10.52088/ijesty.v2i3.301","DOIUrl":"https://doi.org/10.52088/ijesty.v2i3.301","url":null,"abstract":"The government's role in providing social assistance to reduce poverty has been going very well. However, in practice, there are obstacles to collecting and verifying data on prospective beneficiaries, so fast, precise, and accurate information is needed through the participation of the Community or Community to provide information regarding potential beneficiaries—social assistance. This study's goal is to create and develop a model of the Volunteered Geographic Information (VGI) system involving the participation of the Community to determine the effectiveness of the distribution of social assistance by the government and to support the role of a transparent government or good government. This research method is descriptive research with quantitative and qualitative descriptive approaches. This system also refers to the design, development, and stages of the VGI system process suitable for a crowd or community-based approach. The expected result is a VGI-based geographic information system: First: Collect and observe data on social assistance recipients in Aceh Tengah district, Aceh Province. Second: Designing and implementing a VGI-based geographic information system. Third: System testing through two stages: system functional and non-functional testing. The final results of this research are a web-based VGI Social Assistance system model and, for volunteers, the Android-based VGI Social Assistance application.","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"73 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76021142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-19DOI: 10.52088/ijesty.v2i3.315
Teuku Ikmal, Sari Indah Manik, Khairullah Yusuf, David Sarana, A. Amalia
A foaming agent is a concentrated solution of surfactant material that must be dissolved in water before mixing with other concrete material. The foaming agent is used to produce lightweight concrete with a density is £ 1.900 kg/m³. Using foam agents may affect the compressive strength and absorbency of the concrete. Hence, adding clam shells is expected to improve the compressive strength of the foam concrete. In addition, it is also essential to investigate the effects of utilizing foam agents and clam shells on the density of the foam concrete. Nine concrete mixes namely 1 variation of standard concrete, four variations of concrete mixes with foam agent, and four variations of concrete with foam agent and calm shell have been studied to investigate the parameters.The variation of foam agents in the eight concrete mixes were 5%, 10%, 15%, and 20% by water weight. The last four variations contained clamshell of 5% by weight of fine aggregate. The foam agent wasfoamingduced by mixing with a ratio of water and foam agent of 40:1. The experimental results show that at the variation of 20% foam agent, the density reduced by 34.55% and 26.89% for foam concrete with and without clam shell compared to normal concrete. I contrast, adding clamshell also lowered down the compressive strength of foam concrete by 79.86% and 74.96% for the variations. Meanwhile, the highest absorption rate of 1.65% or increased about 6.45% from normal concrete occurred at a variation foam agent of 15% mixed with clamshell. It was concluded that the use of clam shell in the foam concrete seems to decrease the strength of the foam concrete. However, in terms of density, the use of clam shells benefits foam concrete by lowering the self-weight of concrete.
{"title":"The Effect of The Use Of Foam Agent and Clam Shell Powder on The Compressive Strength and Absorbency of Concrete","authors":"Teuku Ikmal, Sari Indah Manik, Khairullah Yusuf, David Sarana, A. Amalia","doi":"10.52088/ijesty.v2i3.315","DOIUrl":"https://doi.org/10.52088/ijesty.v2i3.315","url":null,"abstract":"A foaming agent is a concentrated solution of surfactant material that must be dissolved in water before mixing with other concrete material. The foaming agent is used to produce lightweight concrete with a density is £ 1.900 kg/m³. Using foam agents may affect the compressive strength and absorbency of the concrete. Hence, adding clam shells is expected to improve the compressive strength of the foam concrete. In addition, it is also essential to investigate the effects of utilizing foam agents and clam shells on the density of the foam concrete. Nine concrete mixes namely 1 variation of standard concrete, four variations of concrete mixes with foam agent, and four variations of concrete with foam agent and calm shell have been studied to investigate the parameters.The variation of foam agents in the eight concrete mixes were 5%, 10%, 15%, and 20% by water weight. The last four variations contained clamshell of 5% by weight of fine aggregate. The foam agent wasfoamingduced by mixing with a ratio of water and foam agent of 40:1. The experimental results show that at the variation of 20% foam agent, the density reduced by 34.55% and 26.89% for foam concrete with and without clam shell compared to normal concrete. I contrast, adding clamshell also lowered down the compressive strength of foam concrete by 79.86% and 74.96% for the variations. Meanwhile, the highest absorption rate of 1.65% or increased about 6.45% from normal concrete occurred at a variation foam agent of 15% mixed with clamshell. It was concluded that the use of clam shell in the foam concrete seems to decrease the strength of the foam concrete. However, in terms of density, the use of clam shells benefits foam concrete by lowering the self-weight of concrete.","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"129 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91105103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-07-15DOI: 10.52088/ijesty.v2i3.310
Rahmaini Rahmaini, Fitri Arianggi, M. Maizuar, David Sarana, Khairullah Yusuf
Aceh is one of the most earthquake-prone regions in Indonesia. It is, therefore, essential to design seismic resistance structures according to applicable standards. To reduce damage to building structures, the Indonesian government has updated the seismic-resistant design code for building and non-building structures. The seismic resistant design standard has been updated from SNI 03-1726-2012 to SNI 03-1726-2019 due to a significant change in spectrum response data. The purpose of this study was to evaluate and compare the impacts on the seismic base shear and the cross-sectional area of columns, beams, and tie beams of buildings in 23 regencies in Aceh Province based on SNI 03-1726-2012 and SNI 03-1726-2019. A typical five-story office building with medium-type soil is used in the study. For structural analysis, a particular moment-resistant frame was considered. The determination of the design response spectra is carried out by using coordinates and soil types through the website “indo spectra”. The method used is spectrum response analysis. Some different requirements in the two standards include the spectrum response curve, mass participation, and dynamic base shear. The study’s results revealed that the dynamic base shear in Sabang City had grown by 192.05 percent. Aceh Barat Daya Regency was observed to have the smallest increase in dynamic base shear, which was only 8.16 percent. The required cross-sectional area of structural columns, beams, and tie beams in Sabang City increased by 96%, 40%, and 44.44%, respectively; in the meantime, the required cross-sectional area of columns, beams, and tie beams in several regencies in Aceh province remained unchanged.
{"title":"Comparison Analysis of Seismic Base Shear 23 Regencies in Aceh Province Based on SNI 03-1726-2012 and SNI 03-1726-2019","authors":"Rahmaini Rahmaini, Fitri Arianggi, M. Maizuar, David Sarana, Khairullah Yusuf","doi":"10.52088/ijesty.v2i3.310","DOIUrl":"https://doi.org/10.52088/ijesty.v2i3.310","url":null,"abstract":"Aceh is one of the most earthquake-prone regions in Indonesia. It is, therefore, essential to design seismic resistance structures according to applicable standards. To reduce damage to building structures, the Indonesian government has updated the seismic-resistant design code for building and non-building structures. The seismic resistant design standard has been updated from SNI 03-1726-2012 to SNI 03-1726-2019 due to a significant change in spectrum response data. The purpose of this study was to evaluate and compare the impacts on the seismic base shear and the cross-sectional area of columns, beams, and tie beams of buildings in 23 regencies in Aceh Province based on SNI 03-1726-2012 and SNI 03-1726-2019. A typical five-story office building with medium-type soil is used in the study. For structural analysis, a particular moment-resistant frame was considered. The determination of the design response spectra is carried out by using coordinates and soil types through the website “indo spectra”. The method used is spectrum response analysis. Some different requirements in the two standards include the spectrum response curve, mass participation, and dynamic base shear. The study’s results revealed that the dynamic base shear in Sabang City had grown by 192.05 percent. Aceh Barat Daya Regency was observed to have the smallest increase in dynamic base shear, which was only 8.16 percent. The required cross-sectional area of structural columns, beams, and tie beams in Sabang City increased by 96%, 40%, and 44.44%, respectively; in the meantime, the required cross-sectional area of columns, beams, and tie beams in several regencies in Aceh province remained unchanged.","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"85 2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86477024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-30DOI: 10.52088/ijesty.v2i2.257
Khairullah Yusuf, Aida Rahmayani Siregar, S. Senin
One of the approaches to producing lightweight concrete is by adding the aluminum powder to the cement mixture to create air bubbles in the concrete as such enabling pores to appear in the concrete. Aluminum powder can reduce the weight of lightweight concrete despite its tendency to reduce compressive strength. The compressive strength of concrete can be increased by certain methods, one of which is by the addition of Plastiment-VZ admixture. This study aims to investigate the effect of the use of Plastiment-VZ admixture on the compressive strength and flexural strength of lightweight concrete. The normal concrete compressive strength is designed to the range of 0.7 MPa – 5.0 MPa. The concrete testing specimens were in the form of a cube of 15 cm x 15 cm x 15 cm for the compressive test and beams with dimensions of 15 cm x 15 cm x 60 cm for the flexural test. The test results of the compressive strength obtained for normally aerated concrete (0% of Plastiment-VZ) is 6.31 MPa; and for the variation of 0.2% is 6.52 MPa, for 0.4% is 6.8 MPa, and for 0.6% is 8.04 MPa. The highest increase in strength occurred at 0.6% variation, which is 27.46% above normally aerated concrete. The degrees of flexural strength of the concrete produced from each variation of 0%; Based on the findings, it can be concluded that Plastiment-VZ has a significant effect on increasing the compressive strength and flexural strength of lightweight concrete. The more quantity of Plastiment-VZ is used, the higher the compressive strength and flexural strength are produced; even though, the optimum level for the use of Plastiment-VZ for aerated concrete has not been found.
生产轻质混凝土的方法之一是将铝粉添加到水泥混合物中，在混凝土中产生气泡，从而使混凝土中出现孔隙。铝粉对轻量化混凝土具有降低抗压强度的作用，但对轻量化混凝土具有一定的减重作用。提高混凝土抗压强度有一定的方法，其中一种方法是添加塑性- vz掺合料。本研究旨在探讨塑质- vz掺合料的使用对轻量化混凝土抗压强度和抗弯强度的影响。标准混凝土抗压强度设计范围为0.7 MPa ~ 5.0 MPa。混凝土试件为15 cm × 15 cm × 15 cm的立方体，抗压试验为15 cm × 15 cm × 15 cm，受弯试验为15 cm × 15 cm × 60 cm的梁。正常加气混凝土(0%塑性量- vz)抗压强度试验结果为6.31 MPa;变化0.2%为6.52 MPa, 0.4%为6.8 MPa, 0.6%为8.04 MPa。加气混凝土强度的最大增幅为0.6%，比加气混凝土高27.46%。每次变化产生的混凝土抗弯强度度为0%;综上所述，Plastiment-VZ对提高轻量化混凝土的抗压强度和抗弯强度有显著作用。塑性- vz用量越多，产生的抗压强度和抗折强度越高;尽管如此，塑料- vz用于加气混凝土的最佳用量还没有找到。
{"title":"The Effect of Plastiment-VZ on the Compressive Strength and Flexural Strength of Lightwieght Concrete Using Aluminium Powder","authors":"Khairullah Yusuf, Aida Rahmayani Siregar, S. Senin","doi":"10.52088/ijesty.v2i2.257","DOIUrl":"https://doi.org/10.52088/ijesty.v2i2.257","url":null,"abstract":"One of the approaches to producing lightweight concrete is by adding the aluminum powder to the cement mixture to create air bubbles in the concrete as such enabling pores to appear in the concrete. Aluminum powder can reduce the weight of lightweight concrete despite its tendency to reduce compressive strength. The compressive strength of concrete can be increased by certain methods, one of which is by the addition of Plastiment-VZ admixture. This study aims to investigate the effect of the use of Plastiment-VZ admixture on the compressive strength and flexural strength of lightweight concrete. The normal concrete compressive strength is designed to the range of 0.7 MPa – 5.0 MPa. The concrete testing specimens were in the form of a cube of 15 cm x 15 cm x 15 cm for the compressive test and beams with dimensions of 15 cm x 15 cm x 60 cm for the flexural test. The test results of the compressive strength obtained for normally aerated concrete (0% of Plastiment-VZ) is 6.31 MPa; and for the variation of 0.2% is 6.52 MPa, for 0.4% is 6.8 MPa, and for 0.6% is 8.04 MPa. The highest increase in strength occurred at 0.6% variation, which is 27.46% above normally aerated concrete. The degrees of flexural strength of the concrete produced from each variation of 0%; Based on the findings, it can be concluded that Plastiment-VZ has a significant effect on increasing the compressive strength and flexural strength of lightweight concrete. The more quantity of Plastiment-VZ is used, the higher the compressive strength and flexural strength are produced; even though, the optimum level for the use of Plastiment-VZ for aerated concrete has not been found.","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"96 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86157567","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-25DOI: 10.52088/ijesty.v2i2.255
Teuku Muhammad Ridwan, Amri Amri, Syahrial Syahrial, A. F. Ayob
The city of Lhokseumawe, which is one of the cities that has a topography such as a bay and a very busy area as the center of government, business, and services, has also experienced congestion. In 2012, the Lhokseumawe City Government has started planning to build a 7.6 Kilometer Lhokseumawe City Ring Road, starting from Sp.Kandang – Pusong and Sp. Lestari – Loskala. The ring road construction is along the shores of Ujong Blang Beach and KP3, where Ujong Blang Beach and KP3 since 1998 until now continue to experience abrasion. The purpose of this study was to determine the level of abrasion speed of Ujong Blang Beach and KP3 Beach and risk factors other than abrasion for an optimal risk-based management model approach to the Lhokseumawe City Ring Road as coastal infrastructure that is prone to abrasion and other risks. The method used to determine the abrasion rate is based on Landsat ETM+ (Enhanced Thematic Mapper) satellite data for a period of 25 years (1995 – 2020) which is analyzed by the Digital Shoreline Analysis System. The results showed that the magnitude of the abrasion speed of Ujong Blang Beach and KP3 Beach was -2.11 m/year and the farthest accretion occurred on the coast on transect 83 with an accretion distance of 111.34 m or around 4.45. Meanwhile, other factors were sea waves. with a period range of 2.33-10.25 s with an average of 4.57 s. Furthermore, the height of the coastal topography ranges from 0.00-8.60 m with an average of 4.30 m and the coastal slope observed at 8 observation locations obtained a coastal slope range of 2.90-4.47% with an average slope of 3,76%. The optimum risk-based management carried out by the ring road manager is the ALARP-principles approach to control very high to high risk (ALARP Zone), namely by building a preventive building in the form of a conventional type of breakwater with minimal handling costs to mitigate a greater impact on the environment. Damage to the Lhokseumawe City Ring Road if the risk occurs during the life of the road plan.
{"title":"Optimum Risk-Based Management on the Lhokseumawe City Ring Road which is Vulnerable to Coastal Abrasion","authors":"Teuku Muhammad Ridwan, Amri Amri, Syahrial Syahrial, A. F. Ayob","doi":"10.52088/ijesty.v2i2.255","DOIUrl":"https://doi.org/10.52088/ijesty.v2i2.255","url":null,"abstract":"The city of Lhokseumawe, which is one of the cities that has a topography such as a bay and a very busy area as the center of government, business, and services, has also experienced congestion. In 2012, the Lhokseumawe City Government has started planning to build a 7.6 Kilometer Lhokseumawe City Ring Road, starting from Sp.Kandang – Pusong and Sp. Lestari – Loskala. The ring road construction is along the shores of Ujong Blang Beach and KP3, where Ujong Blang Beach and KP3 since 1998 until now continue to experience abrasion. The purpose of this study was to determine the level of abrasion speed of Ujong Blang Beach and KP3 Beach and risk factors other than abrasion for an optimal risk-based management model approach to the Lhokseumawe City Ring Road as coastal infrastructure that is prone to abrasion and other risks. The method used to determine the abrasion rate is based on Landsat ETM+ (Enhanced Thematic Mapper) satellite data for a period of 25 years (1995 – 2020) which is analyzed by the Digital Shoreline Analysis System. The results showed that the magnitude of the abrasion speed of Ujong Blang Beach and KP3 Beach was -2.11 m/year and the farthest accretion occurred on the coast on transect 83 with an accretion distance of 111.34 m or around 4.45. Meanwhile, other factors were sea waves. with a period range of 2.33-10.25 s with an average of 4.57 s. Furthermore, the height of the coastal topography ranges from 0.00-8.60 m with an average of 4.30 m and the coastal slope observed at 8 observation locations obtained a coastal slope range of 2.90-4.47% with an average slope of 3,76%. The optimum risk-based management carried out by the ring road manager is the ALARP-principles approach to control very high to high risk (ALARP Zone), namely by building a preventive building in the form of a conventional type of breakwater with minimal handling costs to mitigate a greater impact on the environment. Damage to the Lhokseumawe City Ring Road if the risk occurs during the life of the road plan.","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"64 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82095221","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-06-17DOI: 10.52088/ijesty.v2i2.253
Rahma Daniati, Z. Zulnazri, L. Hakim, S. Hasbullah
This study reports on manufacturing cellulose from robusta coffee husks through a solid-liquid extraction process. A high yield of cellulose can be achieved by extraction using 3.5% HNO3 at a temperature of 100 oC with a gain of 35.4%. Meanwhile, the extraction process with 4.5% HNO3 at a temperature of 80 oC only achieved a yield of 32.8%. From the results of this study, it can be seen that the smaller the concentration of HNO3 used and the higher the temperature, the greater the yield of cellulose produced. The X-ray diffraction pattern shows high peaks appearing at an angle of 2θ around 22.5o; this area is a typical peak of the cellulose structure. High crystallinity was obtained at a concentration of 3.5% HNO3 at a temperature of 100 oC at 82.47%, while the lowest crystallinity was found at a 5.5% HNO3 concentration at a temperature of 100 oC at 74.27%. The decrease in crystallinity was caused by the high temperature and concentration of HNO3, which caused the acid to penetrate quickly into the cellulose tissue layer and hydrolyze the crystalline regions of cellulose. FT-IR analysis showed a high absorption area at 3314 cm-1 and a low absorption area at 1028 cm-1, typical of Robusta coffee husk cellulose. The absorption located around the 3314 cm-1 bands is a stretch of the –OH group and the absorption in the 1028 cm-1 band is related to the -CH2 group. SEM can show the morphology of cellulose with smaller and uniform crystal dimensions with a scale of 20 µm.
{"title":"Study of Cellulose Extraction from Robusta Coffee Husk Using NaOH Solution","authors":"Rahma Daniati, Z. Zulnazri, L. Hakim, S. Hasbullah","doi":"10.52088/ijesty.v2i2.253","DOIUrl":"https://doi.org/10.52088/ijesty.v2i2.253","url":null,"abstract":"This study reports on manufacturing cellulose from robusta coffee husks through a solid-liquid extraction process. A high yield of cellulose can be achieved by extraction using 3.5% HNO3 at a temperature of 100 oC with a gain of 35.4%. Meanwhile, the extraction process with 4.5% HNO3 at a temperature of 80 oC only achieved a yield of 32.8%. From the results of this study, it can be seen that the smaller the concentration of HNO3 used and the higher the temperature, the greater the yield of cellulose produced. The X-ray diffraction pattern shows high peaks appearing at an angle of 2θ around 22.5o; this area is a typical peak of the cellulose structure. High crystallinity was obtained at a concentration of 3.5% HNO3 at a temperature of 100 oC at 82.47%, while the lowest crystallinity was found at a 5.5% HNO3 concentration at a temperature of 100 oC at 74.27%. The decrease in crystallinity was caused by the high temperature and concentration of HNO3, which caused the acid to penetrate quickly into the cellulose tissue layer and hydrolyze the crystalline regions of cellulose. FT-IR analysis showed a high absorption area at 3314 cm-1 and a low absorption area at 1028 cm-1, typical of Robusta coffee husk cellulose. The absorption located around the 3314 cm-1 bands is a stretch of the –OH group and the absorption in the 1028 cm-1 band is related to the -CH2 group. SEM can show the morphology of cellulose with smaller and uniform crystal dimensions with a scale of 20 µm.","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"113 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85279183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-05-30DOI: 10.52088/ijesty.v2i2.250
M. Yusuf, S. Bahri, Agustinawati Agustinawati
Machining is a metal cutting process using a machine tool. The machining process will produce the products and the chips or the scraps. The metal of machining chips made from machining processes can be recycled into new materials. The metal of machining chips can be recycled through the smelting process. This research aims to design and fabrication a crucible furnace that can support the recycling process of the metal scraps of machining chips into a new material—the stove is designed to melt non-ferrous metals using gas fuel. The tilting-pot crucible furnace type was created in this research. The crucible furnaces are used for nonferrous metals such as bronze, brass, zinc, and aluminum alloys. The crucible furnace capacities are limited to 10 kg. Liquefied Petroleum Gas (LPG) was used as the fuel for the furnace. The construction of the stove is cylindrically designed. The burner was installed upright at the bottom of the stove. The combustion process is done by mixing fuel LPG gas and air from the blower. The stove was tested on the aluminum machining chips using locally available materials in Lhokseumawe Aceh. The thermometer Lutron TM-906A was used to measure the temperature inside the crucible. From the results of the design and testing of the furnace that has been done, it can be concluded that the aluminum machining chips of 6kg are melting at a temperature of 640oC for 52 minutes, and the LPG gas fuel required is 1.30kg. The crucible furnace was designed to attain a maximum temperature of 700°C.
{"title":"Design and Fabrication of Portable Tilting Furnace for Aluminium Melting","authors":"M. Yusuf, S. Bahri, Agustinawati Agustinawati","doi":"10.52088/ijesty.v2i2.250","DOIUrl":"https://doi.org/10.52088/ijesty.v2i2.250","url":null,"abstract":"Machining is a metal cutting process using a machine tool. The machining process will produce the products and the chips or the scraps. The metal of machining chips made from machining processes can be recycled into new materials. The metal of machining chips can be recycled through the smelting process. This research aims to design and fabrication a crucible furnace that can support the recycling process of the metal scraps of machining chips into a new material—the stove is designed to melt non-ferrous metals using gas fuel. The tilting-pot crucible furnace type was created in this research. The crucible furnaces are used for nonferrous metals such as bronze, brass, zinc, and aluminum alloys. The crucible furnace capacities are limited to 10 kg. Liquefied Petroleum Gas (LPG) was used as the fuel for the furnace. The construction of the stove is cylindrically designed. The burner was installed upright at the bottom of the stove. The combustion process is done by mixing fuel LPG gas and air from the blower. The stove was tested on the aluminum machining chips using locally available materials in Lhokseumawe Aceh. The thermometer Lutron TM-906A was used to measure the temperature inside the crucible. From the results of the design and testing of the furnace that has been done, it can be concluded that the aluminum machining chips of 6kg are melting at a temperature of 640oC for 52 minutes, and the LPG gas fuel required is 1.30kg. The crucible furnace was designed to attain a maximum temperature of 700°C.","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78403069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-30DOI: 10.52088/ijesty.v2i2.247
Anwar Widiyanto Nugroho, Tukiyo Tukiyo, Herman Fithra
To provide livable housing for the residents of DKI Jakarta, especially in urban areas with minimal land availability, the DKI Jakarta Provincial Government supports the development of vertical housing to offset the high demand for housing and limited land. Through the Department of Public Housing and Settlement Areas, the Provincial Government of DKI Jakarta is implementing the Pulogadung-East Jakarta PIK Flats Construction Project. When this research was carried out, the Pulogadung-East Jakarta PIK Flats Construction Project was entering week 63, with work progress reaching 47.689% of the planned 48.725%, or in other words, this project experienced a delay of 1.036% of the scheduled. Therefore, it is necessary to conduct research that aims to identify the factors that cause the risk of time delays, analyze the most dominant factors that lead to the risk of time delays, and look for the necessary handling actions so that the risk of time delays that occur does not increase or can also be prevented or resolved. In this study, the descriptive quantitative method is carried out by surveys, interviews, and distributing questionnaires to respondents. The risk rating was analyzed using MS. Excel is based on a probability and impact matrix, which aims to determine variables with a high level of risk, then expert validation is carried out regarding risk management. And from the analysis results obtained, six variables that cause the risk of time delays in the Pulogadung-East Jakarta PIK Flats Development Project work can occur, namely Late Payment of Term by Owner, Design Changes, Lack of Coordination While Working, Inaccuracy of Material Order, Time, Limited Material Availability in the Market, and the Occurrence of the Corona Outbreak (Covid 19). The results of expert recommendations for the six variables can be expressed in handling actions.
为了给雅加达DKI的居民提供宜居的住房，特别是在土地可用性最低的城市地区，雅加达DKI省政府支持垂直住房的发展，以抵消对住房的高需求和有限的土地。通过公共住房和住区部，雅加达DKI省政府正在实施普洛加东-东雅加达PIK公寓建设项目。当本研究进行时，Pulogadung-East Jakarta PIK Flats Construction Project进入第63周，工作进度达到了计划的48.725%的47.689%，换句话说，该项目经历了计划的1.036%的延迟。因此，有必要进行研究，找出造成时间延误风险的因素，分析导致时间延误风险的最主要因素，并寻找必要的处理措施，使发生的时间延误风险不增加或也可以预防或解决。在本研究中，描述性定量方法是通过调查，访谈，并向受访者发放问卷。MS. Excel基于概率和影响矩阵对风险等级进行分析，确定风险等级较高的变量，并对风险管理进行专家验证。从获得的分析结果来看，导致Pulogadung-East Jakarta PIK公寓开发项目工作出现时间延迟风险的六个变量可能发生，即业主逾期付款、设计变更、工作时缺乏协调、材料订单不准确、时间、市场上材料供应有限以及发生冠状病毒爆发(Covid - 19)。专家对这六个变量的建议结果可以用处理动作来表示。
{"title":"Identification of Factors Caused The Risk of Time Delays in The Pulogadung","authors":"Anwar Widiyanto Nugroho, Tukiyo Tukiyo, Herman Fithra","doi":"10.52088/ijesty.v2i2.247","DOIUrl":"https://doi.org/10.52088/ijesty.v2i2.247","url":null,"abstract":"To provide livable housing for the residents of DKI Jakarta, especially in urban areas with minimal land availability, the DKI Jakarta Provincial Government supports the development of vertical housing to offset the high demand for housing and limited land. Through the Department of Public Housing and Settlement Areas, the Provincial Government of DKI Jakarta is implementing the Pulogadung-East Jakarta PIK Flats Construction Project. When this research was carried out, the Pulogadung-East Jakarta PIK Flats Construction Project was entering week 63, with work progress reaching 47.689% of the planned 48.725%, or in other words, this project experienced a delay of 1.036% of the scheduled. Therefore, it is necessary to conduct research that aims to identify the factors that cause the risk of time delays, analyze the most dominant factors that lead to the risk of time delays, and look for the necessary handling actions so that the risk of time delays that occur does not increase or can also be prevented or resolved. In this study, the descriptive quantitative method is carried out by surveys, interviews, and distributing questionnaires to respondents. The risk rating was analyzed using MS. Excel is based on a probability and impact matrix, which aims to determine variables with a high level of risk, then expert validation is carried out regarding risk management. And from the analysis results obtained, six variables that cause the risk of time delays in the Pulogadung-East Jakarta PIK Flats Development Project work can occur, namely Late Payment of Term by Owner, Design Changes, Lack of Coordination While Working, Inaccuracy of Material Order, Time, Limited Material Availability in the Market, and the Occurrence of the Corona Outbreak (Covid 19). The results of expert recommendations for the six variables can be expressed in handling actions.","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73823940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-26DOI: 10.52088/ijesty.v2i2.246
Muhammad Muhammad, Mulyawan Mulyawan, Muntasir Raihan Rahman, S. Suryati
Activated carbon that potentially acts as an adsorbent was prepared from granulated sugar. The activated sugar was prepared through a dehydration process followed by a chemical activation process with a concentrated NaOH solution. To comprehend the properties of prepared ready carbon, characterization of the carbon was needed to be conducted. The conducted methods for prepared activated carbon were FTIR for detecting present functional groups attached to carbon, BET to identify the porous structure of synthesized carbon, SEM method as a morphological indicating method on synthesized carbon, and carbon thermal stability characteristic information from the TGA method. It was found that the prepared activated carbon contained various functional groups. The distinguished functional groups presented were carboxylic acid, free alcohol, NH2, and SO3. The readily activated carbon showed a rough surface to enhance the adsorption process on the synthesized carbon from the SEM characterization method. BET on the readily activated carbon revealed that the activated carbon exhibited type IV isotherm, consisting dominantly of mesopores and micropores as a minority. TGA characterization method showed that the thermal stability of carbon was significantly unstable in the range of 100℃ and around 200℃. It implies that the prepared activated carbon contained OH as one of its functional groups. With all the characterization methods conducted on the readily activated carbon from granulated sugar, it was found that the prepared carbon had the potential to be utilized as an adsorbent. Moreover, it is suggested that the granular sugar-based carbon should be investigated in the following future study in the wastewater treatment process.
{"title":"Characterization of Activated Carbon from Granulated Sugar","authors":"Muhammad Muhammad, Mulyawan Mulyawan, Muntasir Raihan Rahman, S. Suryati","doi":"10.52088/ijesty.v2i2.246","DOIUrl":"https://doi.org/10.52088/ijesty.v2i2.246","url":null,"abstract":"Activated carbon that potentially acts as an adsorbent was prepared from granulated sugar. The activated sugar was prepared through a dehydration process followed by a chemical activation process with a concentrated NaOH solution. To comprehend the properties of prepared ready carbon, characterization of the carbon was needed to be conducted. The conducted methods for prepared activated carbon were FTIR for detecting present functional groups attached to carbon, BET to identify the porous structure of synthesized carbon, SEM method as a morphological indicating method on synthesized carbon, and carbon thermal stability characteristic information from the TGA method. It was found that the prepared activated carbon contained various functional groups. The distinguished functional groups presented were carboxylic acid, free alcohol, NH2, and SO3. The readily activated carbon showed a rough surface to enhance the adsorption process on the synthesized carbon from the SEM characterization method. BET on the readily activated carbon revealed that the activated carbon exhibited type IV isotherm, consisting dominantly of mesopores and micropores as a minority. TGA characterization method showed that the thermal stability of carbon was significantly unstable in the range of 100℃ and around 200℃. It implies that the prepared activated carbon contained OH as one of its functional groups. With all the characterization methods conducted on the readily activated carbon from granulated sugar, it was found that the prepared carbon had the potential to be utilized as an adsorbent. Moreover, it is suggested that the granular sugar-based carbon should be investigated in the following future study in the wastewater treatment process.","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76047857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-04-17DOI: 10.52088/ijesty.v2i2.304
Muhammad Hoiri, M. I. Setiawan, D. Wulandari
Safety and accidents at work are the most serious thing to note, on building projects stroke center at Haji Hospital of Surabaya is still a lot of workers are less aware and less understanding about the safety and accidents caused due to neglect of the problem of workplace accidents. It is necessary to analyze the implementation of safety management system construction as well as the influence of the cost of the implementation of the project. This research method uses quantitative description based on the analysis about the application of the safety management system of construction on building projects stroke center Haji Hospital Surabaya, data collection through questionnaires (primary) which is distributed to 30 respondents consisting of the executive team (contractor), supervisory (MK) project and also some of the foreman of the workers, and observation and also documentation, where data is the results of the questionnaire were analyzed using the software IBM SPSS version 25, looking for the results of the multiple linear regression, T-test, an F-test. The results of linear regression analysis, T-test and F test obtained the value of T count > T table where X1 = 3,071, X2 = 5,5658, X6 = 3,006 and X7 = 3,560 and F count= 54,308 > F table = 2,46, the meaning that the variable of X1, X2, X6 and X7 are significant to application of safety management of the construction with the cost of implementation of construction projects
{"title":"Implementation Of Construction Safety Management System on The Building Project of Haji Hospital Of Surabaya","authors":"Muhammad Hoiri, M. I. Setiawan, D. Wulandari","doi":"10.52088/ijesty.v2i2.304","DOIUrl":"https://doi.org/10.52088/ijesty.v2i2.304","url":null,"abstract":"Safety and accidents at work are the most serious thing to note, on building projects stroke center at Haji Hospital of Surabaya is still a lot of workers are less aware and less understanding about the safety and accidents caused due to neglect of the problem of workplace accidents. It is necessary to analyze the implementation of safety management system construction as well as the influence of the cost of the implementation of the project. This research method uses quantitative description based on the analysis about the application of the safety management system of construction on building projects stroke center Haji Hospital Surabaya, data collection through questionnaires (primary) which is distributed to 30 respondents consisting of the executive team (contractor), supervisory (MK) project and also some of the foreman of the workers, and observation and also documentation, where data is the results of the questionnaire were analyzed using the software IBM SPSS version 25, looking for the results of the multiple linear regression, T-test, an F-test. The results of linear regression analysis, T-test and F test obtained the value of T count > T table where X1 = 3,071, X2 = 5,5658, X6 = 3,006 and X7 = 3,560 and F count= 54,308 > F table = 2,46, the meaning that the variable of X1, X2, X6 and X7 are significant to application of safety management of the construction with the cost of implementation of construction projects","PeriodicalId":14149,"journal":{"name":"International Journal of Engineering, Science and Information Technology","volume":"498 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80030184","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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