Pub Date : 2023-09-29DOI: 10.21009/jpensil.v12i3.34971
Ignatius Sudarsono, S. Imam Wahyudi, Henny Pratiwi Adi
Cement, as a concrete-forming material, is a contributor to CO2 emissions in the world. Reducing cement and substituting fly ash and silica fume as concrete substitution materials in the manufacture of concrete makes green concrete without lowering the quality of the concrete. Concrete in the marine environment is frequently destroyed by severe environmental elements, such as seawater penetration; hence, high-performance concrete materials are required. This research aims to analyze the effect of adding fly ash and silica fume on concrete compressive strength and permeability. The specimens made were then immersed in freshwater and seawater. Analysis of the compressive strength test result shows that the compressive strength values for the samples treated with freshwater or seawater have exceeded the expected compressive strength of 30 MPa. The permeability test on the test object resulted in the supplementary fly ash to the concrete immersed in freshwater having a good value, i.e., the water penetration was below that required by DIN-1045, namely 5 cm. The penetration of concrete with fly ash impressed in seawater is good only in concrete with a 10% fly ash variation. The water penetration value still meets the requirements in concrete with silica fume for all variations with freshwater and seawater treatment.
{"title":"FLY ASH AND SILICA FUME SUBSTITUTION ON COMPRESSIVE STRENGTH AND PERMEABILITY OF CONCRETE IN THE MARINE ENVIRONMENT","authors":"Ignatius Sudarsono, S. Imam Wahyudi, Henny Pratiwi Adi","doi":"10.21009/jpensil.v12i3.34971","DOIUrl":"https://doi.org/10.21009/jpensil.v12i3.34971","url":null,"abstract":"Cement, as a concrete-forming material, is a contributor to CO2 emissions in the world. Reducing cement and substituting fly ash and silica fume as concrete substitution materials in the manufacture of concrete makes green concrete without lowering the quality of the concrete. Concrete in the marine environment is frequently destroyed by severe environmental elements, such as seawater penetration; hence, high-performance concrete materials are required. This research aims to analyze the effect of adding fly ash and silica fume on concrete compressive strength and permeability. The specimens made were then immersed in freshwater and seawater. Analysis of the compressive strength test result shows that the compressive strength values for the samples treated with freshwater or seawater have exceeded the expected compressive strength of 30 MPa. The permeability test on the test object resulted in the supplementary fly ash to the concrete immersed in freshwater having a good value, i.e., the water penetration was below that required by DIN-1045, namely 5 cm. The penetration of concrete with fly ash impressed in seawater is good only in concrete with a 10% fly ash variation. The water penetration value still meets the requirements in concrete with silica fume for all variations with freshwater and seawater treatment.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135132412","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 : 2023-05-30DOI: 10.21009/jpensil.v12i2.34065
None Muhammad Rahman Rambe, Rizky Febriani Pohan
Modules are teaching materials that contain learning objectives, learning material/substance and evaluation so that students can learn independently and be more active in learning. The purpose of this study was to determine the effect of using the module on student learning outcomes in first semester of the Civil Engineering Study Program, Faculty of Engineering, Graha Nusantara University in the Basic Engineering Mechanics course and the magnitude of the increase in learning outcomes. The research method used was quasi-experimental method with a pretest-posttest control group design. The number of samples is 40 students, which are divided into two groups. Data collection uses test techniques (questions) through pre-test and post-test. Data processing was performed using Statistical Product and Service Solution (SPSS) version 21.0 for Windows. Based on the results of the t-test, it was found that tcount ≥ ttable or 4.2058 ≥ 2.023 meaning that Ho is rejected or Ha is accepted. So that the module-based learning model affects the learning outcomes of Basic Engineering Mechanics students of the Civil Engineering Study Program, Graha Nusantara University Padangsidimpuan with an increase in learning outcomes of 41.86%. Meanwhile, the conventional learning model is only able to increase the learning outcomes of Basic Engineering Mechanics by 28.69%. The module-based learning model has a percent effectiveness of 35.19% to improve Basic Engineering Mechanics learning outcomes. Thus, the application of a module-based learning model is very suitable and effective for colleges used.
{"title":"MODULE’S INFLUENCE ON BASIC ENGINEERING MECHANICS’S LEARNING OUTCOMES OF CIVIL ENGINEERING STUDENTS","authors":"None Muhammad Rahman Rambe, Rizky Febriani Pohan","doi":"10.21009/jpensil.v12i2.34065","DOIUrl":"https://doi.org/10.21009/jpensil.v12i2.34065","url":null,"abstract":"Modules are teaching materials that contain learning objectives, learning material/substance and evaluation so that students can learn independently and be more active in learning. The purpose of this study was to determine the effect of using the module on student learning outcomes in first semester of the Civil Engineering Study Program, Faculty of Engineering, Graha Nusantara University in the Basic Engineering Mechanics course and the magnitude of the increase in learning outcomes. The research method used was quasi-experimental method with a pretest-posttest control group design. The number of samples is 40 students, which are divided into two groups. Data collection uses test techniques (questions) through pre-test and post-test. Data processing was performed using Statistical Product and Service Solution (SPSS) version 21.0 for Windows. Based on the results of the t-test, it was found that tcount ≥ ttable or 4.2058 ≥ 2.023 meaning that Ho is rejected or Ha is accepted. So that the module-based learning model affects the learning outcomes of Basic Engineering Mechanics students of the Civil Engineering Study Program, Graha Nusantara University Padangsidimpuan with an increase in learning outcomes of 41.86%. Meanwhile, the conventional learning model is only able to increase the learning outcomes of Basic Engineering Mechanics by 28.69%. The module-based learning model has a percent effectiveness of 35.19% to improve Basic Engineering Mechanics learning outcomes. Thus, the application of a module-based learning model is very suitable and effective for colleges used.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135643486","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}
Building maintenance must also be carried out on campus buildings, because every day they are used by the academic community in their activities in large numbers. For that we need buildings that are safe, comfortable, and decent. Building maintenance in Indonesia is regulated in the Regulation of the Minister of Public Works No.24/PRT/M/2008 concerning Building Maintenance. This arrangement was updated with the passing of Law number 11 of 2020 concerning Job Creation. Based on this, it is also necessary to know the best building maintenance methods that must be applied based on the right approach. This study aims to plan a maintenance method for the L5 building on the UNJ Campus based on the Work Breakdown Structure (WBS) using Building Information Modeling (BIM). Based on a series of studies on the UNJ Campus L5 building that is integrated with BIM, it will improve the process of maintaining and repairing buildings. The results of this early stage research are expected to provide an overview and recommendations on how to maintain the UNJ Campus building.
{"title":"DEVELOPMENT OF WORK BREAKDOWN STRUCTURE USING BUILDING INFORMATION MODELING AT UNJ","authors":"Rezi Berliana Yasinta, Adhi Purnomo, Alwan Izzudin","doi":"10.21009/jpensil.v12i2.34701","DOIUrl":"https://doi.org/10.21009/jpensil.v12i2.34701","url":null,"abstract":"Building maintenance must also be carried out on campus buildings, because every day they are used by the academic community in their activities in large numbers. For that we need buildings that are safe, comfortable, and decent. Building maintenance in Indonesia is regulated in the Regulation of the Minister of Public Works No.24/PRT/M/2008 concerning Building Maintenance. This arrangement was updated with the passing of Law number 11 of 2020 concerning Job Creation. Based on this, it is also necessary to know the best building maintenance methods that must be applied based on the right approach. This study aims to plan a maintenance method for the L5 building on the UNJ Campus based on the Work Breakdown Structure (WBS) using Building Information Modeling (BIM). Based on a series of studies on the UNJ Campus L5 building that is integrated with BIM, it will improve the process of maintaining and repairing buildings. The results of this early stage research are expected to provide an overview and recommendations on how to maintain the UNJ Campus building.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135642953","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}
Indonesia, which has tectonic conditions in the form of a large meeting point of the world's plates and several small plates, makes the region in Indonesia the center of earthquake occurrences and earthquake-resistant buildings are an absolute necessity. Eccentrically Braced Frames (EBFs) are a model of earthquake-resistant steel building structures that can limit inelastic behavior only to link elements, where the use of these links, especially replaceable links, can facilitate post-earthquake building repairs without having to reconstruct the main building. This study will analyze the stability, behavior, performance levels, and energy dissipation capabilities of six EBF models by combining vertical link and horizontal link configurations for different building height classifications, namely low, medium, and high buildings. Analysis uses the Response Spectrum Analysis and Pushover Analysis methods with the help of structural analysis software. From this analysis, 3-storey H-EBF has the highest stability, 10-storey V-EBF has the fastest time to reach the first yielding condition and consumes the most energy, 3-storey V-EBF has the highest ductility, and 3-storey H-EBF has the highest stiffness. highest. However, the performance level of all EBFs is in the form of Immediate Occupation and similar collapse mechanisms.
{"title":"PERFORMANCE ANALYSIS OF ECCENTRIC PORTAL BRACING TO VERTICAL AND HORIZONTAL LINK CLASSIFICATION","authors":"Erwin Rommel, Yasmin Helga, Aulia Indira Kumalasari, Rizki Amalia Tri Cahyani","doi":"10.21009/jpensil.v12i2.34418","DOIUrl":"https://doi.org/10.21009/jpensil.v12i2.34418","url":null,"abstract":"Indonesia, which has tectonic conditions in the form of a large meeting point of the world's plates and several small plates, makes the region in Indonesia the center of earthquake occurrences and earthquake-resistant buildings are an absolute necessity. Eccentrically Braced Frames (EBFs) are a model of earthquake-resistant steel building structures that can limit inelastic behavior only to link elements, where the use of these links, especially replaceable links, can facilitate post-earthquake building repairs without having to reconstruct the main building. This study will analyze the stability, behavior, performance levels, and energy dissipation capabilities of six EBF models by combining vertical link and horizontal link configurations for different building height classifications, namely low, medium, and high buildings. Analysis uses the Response Spectrum Analysis and Pushover Analysis methods with the help of structural analysis software. From this analysis, 3-storey H-EBF has the highest stability, 10-storey V-EBF has the fastest time to reach the first yielding condition and consumes the most energy, 3-storey V-EBF has the highest ductility, and 3-storey H-EBF has the highest stiffness. highest. However, the performance level of all EBFs is in the form of Immediate Occupation and similar collapse mechanisms.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135643224","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 : 2023-05-30DOI: 10.21009/jpensil.v12i2.34645
None Parmono, Ira Nuraini, Nandan Supriatna, Dedy Suryadi
This study aims to find out the results of calculating the requirements for rebar beam structures in the Hotel Indigo Bandung Development Project using the Building Information Modeling (BIM) method with the help of Autodesk Revit 2020 software, to be further studied against conventional methods. The type of research used in writing the review is quantitative research. The methods used in collecting data in this study are observation, interviews, and documentation studies. Data collection is used to find the truth and accuracy of the data obtained carefully and accurately so that the truth can be accounted for. The results showed that the total calculation of rebar requirements using the conventional method weighed 18843.211 kg, the total calculation of rebar requirements using the Building Information Modeling method with the help of Autodesk Revit 2020 software was 18272.58 kg, there was a difference of 570.628 kg or a difference of 3%.
{"title":"ANALYSIS OF THE CALCULATION OF REBAR BEAM STRUCTURE OF FLOOR 6 ZONE 1 INDIGO BANDUNG HOTEL PROJECT USING BUILDING INFORMATION MODELING (BIM)","authors":"None Parmono, Ira Nuraini, Nandan Supriatna, Dedy Suryadi","doi":"10.21009/jpensil.v12i2.34645","DOIUrl":"https://doi.org/10.21009/jpensil.v12i2.34645","url":null,"abstract":"This study aims to find out the results of calculating the requirements for rebar beam structures in the Hotel Indigo Bandung Development Project using the Building Information Modeling (BIM) method with the help of Autodesk Revit 2020 software, to be further studied against conventional methods. The type of research used in writing the review is quantitative research. The methods used in collecting data in this study are observation, interviews, and documentation studies. Data collection is used to find the truth and accuracy of the data obtained carefully and accurately so that the truth can be accounted for. The results showed that the total calculation of rebar requirements using the conventional method weighed 18843.211 kg, the total calculation of rebar requirements using the Building Information Modeling method with the help of Autodesk Revit 2020 software was 18272.58 kg, there was a difference of 570.628 kg or a difference of 3%.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135643484","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 : 2023-05-30DOI: 10.21009/jpensil.v12i2.33687
Salma Maharani, Riyan Arthur, Arris Maulana
This qualitative study focuses on bibliometric analysis of literacy research trends of vocational high school’s students in the Field of Building Construction. The goal is to find out the direction and projection of research using a content analysis approach with Google Scholar and Scopus databases taking the range of 2003-2023. The data search process was carried out through Publish or Perish software which then obtained 1,166 raw data with the acquisition of saturated data as much as 24 data. This study analyzes trend growth, author country/geographic location, author agency/affiliation, keywords, and author distribution. The results found that the research topic in this study rose in the range of 2008-2012 with Indonesia as a country that appeared superior, supported by the superior affiliation of the country, namely Jakarta State University, with the author on behalf of Riyan Arthur getting a superior position in this research, while keyword analysis showed that vocational literacy studies had not been discussed much, indicated by the small bubble shape, some related keywords are about literacy skills in SMK, literacy components in SMK, to the required learning support such as e-modules. So that based on the results of existing research, it can be projected that the development of research in vocational literacy in SMK in the Field of Building Construction will be in line with the dominant results that appear in every analysis that has been carried out.
本定性研究的重点是对高职学生在建筑建设领域的素养研究趋势进行文献计量分析。目标是利用Google Scholar和Scopus数据库2003-2023年的内容分析方法，找出研究的方向和预测。数据检索过程通过Publish or Perish软件进行，获取原始数据1166条，饱和数据采集多达24条。这项研究分析了趋势增长、作者国家/地理位置、作者机构/隶属关系、关键词和作者分布。结果发现，本研究的研究主题在2008-2012年的范围内上升，印度尼西亚作为一个表现优越的国家，得到了该国的优越隶属关系，即雅加达国立大学的支持，作者代表Riyan Arthur在本研究中获得了优越的位置，而关键词分析显示，职业素养研究的讨论并不多，由小气泡形状表示，一些相关关键词是关于SMK中的读写技能;SMK中的识字部分，到所需的学习支持，如电子模块。因此，基于现有的研究结果，可以预测，SMK在建筑施工领域的职业素养研究的发展将与每一次分析中出现的主导结果一致。
{"title":"THE BIBLIOMETRICS ANALYSIS OF LITERACY OF VOCATIONAL HIGH SCHOOL STUDENT IN BUILDING CONSTRUCTION EXPERTISE","authors":"Salma Maharani, Riyan Arthur, Arris Maulana","doi":"10.21009/jpensil.v12i2.33687","DOIUrl":"https://doi.org/10.21009/jpensil.v12i2.33687","url":null,"abstract":"This qualitative study focuses on bibliometric analysis of literacy research trends of vocational high school’s students in the Field of Building Construction. The goal is to find out the direction and projection of research using a content analysis approach with Google Scholar and Scopus databases taking the range of 2003-2023. The data search process was carried out through Publish or Perish software which then obtained 1,166 raw data with the acquisition of saturated data as much as 24 data. This study analyzes trend growth, author country/geographic location, author agency/affiliation, keywords, and author distribution. The results found that the research topic in this study rose in the range of 2008-2012 with Indonesia as a country that appeared superior, supported by the superior affiliation of the country, namely Jakarta State University, with the author on behalf of Riyan Arthur getting a superior position in this research, while keyword analysis showed that vocational literacy studies had not been discussed much, indicated by the small bubble shape, some related keywords are about literacy skills in SMK, literacy components in SMK, to the required learning support such as e-modules. So that based on the results of existing research, it can be projected that the development of research in vocational literacy in SMK in the Field of Building Construction will be in line with the dominant results that appear in every analysis that has been carried out.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135643619","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 : 2023-05-30DOI: 10.21009/jpensil.v12i2.31492
Dewi Pertiwi, Indra Komara, Yanisfa Septiarsilia, Dita Kamarul Fitriah
Improvement of the current construction of midrise to high-rise building in Surabaya relatively needs to be evaluated, especially for compact office building area, it is very challenging to have an optimal space to the structural system with facilitate a satisfactory capacity performance. This paper makes a comparative study of the effectivity of structural plate structure in the compact office building between conventional slab (M1), waffle slab (M2) and flat slab (M3). A typical 5-story reinforced concrete building structure is selected as a case study within 6 m symmetrically span for each model. The proposed method used in this study is based on empirical analysis followed by numerical evaluation using SAP2000. The step initiated by deriving an optimal alternative of various type of slab. This study aims to emphasize the benefits to the functionality of the structural system which more efficient in term of structural capacity and its performance. As the result, M1 and M3 offer a similar behaviour due to the reinforcement and design performance with high slab deformation compared to the M2. M2 present a lower slab deflection under the supported of waffle element with the result almost twice smaller than M1 and M3.
{"title":"EVALUATION OF STRUCTURE USING VARIETY OF SLAB TYPE UNDER PERFORMANCE-BASED DESIGN: CASE STUDY COMMON WORKING SPACE IN SURABAYA","authors":"Dewi Pertiwi, Indra Komara, Yanisfa Septiarsilia, Dita Kamarul Fitriah","doi":"10.21009/jpensil.v12i2.31492","DOIUrl":"https://doi.org/10.21009/jpensil.v12i2.31492","url":null,"abstract":"Improvement of the current construction of midrise to high-rise building in Surabaya relatively needs to be evaluated, especially for compact office building area, it is very challenging to have an optimal space to the structural system with facilitate a satisfactory capacity performance. This paper makes a comparative study of the effectivity of structural plate structure in the compact office building between conventional slab (M1), waffle slab (M2) and flat slab (M3). A typical 5-story reinforced concrete building structure is selected as a case study within 6 m symmetrically span for each model. The proposed method used in this study is based on empirical analysis followed by numerical evaluation using SAP2000. The step initiated by deriving an optimal alternative of various type of slab. This study aims to emphasize the benefits to the functionality of the structural system which more efficient in term of structural capacity and its performance. As the result, M1 and M3 offer a similar behaviour due to the reinforcement and design performance with high slab deformation compared to the M2. M2 present a lower slab deflection under the supported of waffle element with the result almost twice smaller than M1 and M3.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135642954","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}
Candlenut is a superior commodity with great opportunities. Processing of candlenut seeds produces candlenut shells which are hard with a calorific value of 4164 cal/g so can be used as fuel. Processing candlenut shells as fuel produces waste of ash and not been utilized optimally. In this research, candlenut shell ash was used as a new alternative in making paving blocks, namely to substitute sand by 13%, 18% and 25% by weight of sand. The method used to analyze the chemical content of candlenut shell ash through XRF testing and compressive strength testing with a Compression Testing Machine after 28 days of curing time. Based on the results of the XRF test, hazelnut shell ash has a CaO content of 93.3%, where CaO is the main ingredient for making cement. In addition, the results of the average compressive strength of paving blocks at 13% substitution of candlenut shell ash produced a compressive strength of 5.89 Mpa, 18% substitution of candlenut shell ash of 8.72 Mpa, and 25% substitution of candlenut shell ash of 11.07 Mpa. The results of the compressive strength of paving blocks with the substitution of hazelnut shell ash produced standard standard paving block strength of D quality.
{"title":"EFFECT OF CANDLENUT SHELL ASH AS A SAND SUBSTITUTION ON COMPRESSIVE STRENGH OF PAVING BLOCK","authors":"Luqman Cahyono, Yulia Riska Dwi Sinta, Nabillah Rodhifatul Jannah, Inas Aidah Fikriyah, Putri Nabiilah Anwar, Desita Romadona Syah Putri, Agung Prasetyo Utomo","doi":"10.21009/jpensil.v12i2.34382","DOIUrl":"https://doi.org/10.21009/jpensil.v12i2.34382","url":null,"abstract":"Candlenut is a superior commodity with great opportunities. Processing of candlenut seeds produces candlenut shells which are hard with a calorific value of 4164 cal/g so can be used as fuel. Processing candlenut shells as fuel produces waste of ash and not been utilized optimally. In this research, candlenut shell ash was used as a new alternative in making paving blocks, namely to substitute sand by 13%, 18% and 25% by weight of sand. The method used to analyze the chemical content of candlenut shell ash through XRF testing and compressive strength testing with a Compression Testing Machine after 28 days of curing time. Based on the results of the XRF test, hazelnut shell ash has a CaO content of 93.3%, where CaO is the main ingredient for making cement. In addition, the results of the average compressive strength of paving blocks at 13% substitution of candlenut shell ash produced a compressive strength of 5.89 Mpa, 18% substitution of candlenut shell ash of 8.72 Mpa, and 25% substitution of candlenut shell ash of 11.07 Mpa. The results of the compressive strength of paving blocks with the substitution of hazelnut shell ash produced standard standard paving block strength of D quality.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135642964","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 : 2023-05-30DOI: 10.21009/jpensil.v12i2.34156
Muhammad Haristo Rahman, Tuti Iriani, Irika Widiasanti
This study aims to obtain complete information about the implementation Of Education Process Standards at SMK Construction and Property Engineering Expertise Programs in Jakarta. Research related to how Implementation of Learning Land measurement engineering subjects to achieve the expected competency in accordance with the established basic competencies, and what factors are done by the teacher to achieve the competence of Surveying Techniques. This research is intended in a qualitative descriptive study. The data source was obtained from interviews with the deputy headmaster of the curriculum section and the teacher of the subject of Surveying Techniques as well as the basic competency documents and the Learning Implementation Plan (RPP). Data collection procedures carried out by observation, in-depth interviews, and documentation. The analysis is done by describing and interpreting the data from interviews and documentation studies and checking the validity of the data is done by triangulation. From the results of research conducted the implementation of the standard process in learning Surveying Techniques goes well by paying attention to predetermined standards namely planning, implementation and assessment by attention to the cognitive, affective, and psychomotor elements of students.
{"title":"IMPLEMENTATION OF BASIC COMPETENCIES IN SURVEYING TECHNIQUES AT SMK CONSTRUCTION AND PROPERTY ENGINEERING EXPERTISE PROGRAMS","authors":"Muhammad Haristo Rahman, Tuti Iriani, Irika Widiasanti","doi":"10.21009/jpensil.v12i2.34156","DOIUrl":"https://doi.org/10.21009/jpensil.v12i2.34156","url":null,"abstract":"This study aims to obtain complete information about the implementation Of Education Process Standards at SMK Construction and Property Engineering Expertise Programs in Jakarta. Research related to how Implementation of Learning Land measurement engineering subjects to achieve the expected competency in accordance with the established basic competencies, and what factors are done by the teacher to achieve the competence of Surveying Techniques. This research is intended in a qualitative descriptive study. The data source was obtained from interviews with the deputy headmaster of the curriculum section and the teacher of the subject of Surveying Techniques as well as the basic competency documents and the Learning Implementation Plan (RPP). Data collection procedures carried out by observation, in-depth interviews, and documentation. The analysis is done by describing and interpreting the data from interviews and documentation studies and checking the validity of the data is done by triangulation. From the results of research conducted the implementation of the standard process in learning Surveying Techniques goes well by paying attention to predetermined standards namely planning, implementation and assessment by attention to the cognitive, affective, and psychomotor elements of students.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135643071","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}
Cement production worldwide contributes at least a 9% increase in CO2 emissions. Industrial or agricultural waste can cause serious problems for the environment. One of the wastes that can be used as SCM from agricultural waste is sugar cane. This research was conducted to determine the content of chemical elements contained in bagasse ash which is suspected to have chemical content similarities with cement. This study uses an experimental method, with the type of pre-experiment research which has a one shot study case type research scheme. The results indicated that bagasse ash with a final combustion temperature of 600C had the highest silicon content compared to bagasse ash with a final firing temperature of 500C and 700C. The analysis results indicate that with a relatively high percentage of silicon, bagasse ash with a combustion temperature of 600C can be used as an additive or cement substitute.
{"title":"COMPOSITION OF CHEMICAL INGREDIENTS IN SUGARCANE BAGASSE ASH WITH VARIATION OF FINAL CALCINATION TEMPERATURE","authors":"None Anisah, Lucas Letournel, Aulia Mufti Salsabila, Yusrina Luthfiana, Nurul Anisa","doi":"10.21009/jpensil.v12i2.34855","DOIUrl":"https://doi.org/10.21009/jpensil.v12i2.34855","url":null,"abstract":"Cement production worldwide contributes at least a 9% increase in CO2 emissions. Industrial or agricultural waste can cause serious problems for the environment. One of the wastes that can be used as SCM from agricultural waste is sugar cane. This research was conducted to determine the content of chemical elements contained in bagasse ash which is suspected to have chemical content similarities with cement. This study uses an experimental method, with the type of pre-experiment research which has a one shot study case type research scheme. The results indicated that bagasse ash with a final combustion temperature of 600C had the highest silicon content compared to bagasse ash with a final firing temperature of 500C and 700C. The analysis results indicate that with a relatively high percentage of silicon, bagasse ash with a combustion temperature of 600C can be used as an additive or cement substitute.","PeriodicalId":488921,"journal":{"name":"Jurnal Pensil","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135832191","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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