W. Melo Prudêncio de Araújo, G. B. Barreto sandoval, M. de Souza Picanço, C. C. Zoe Correa, A. Negrão MAcedo
Pervious concrete (PC) is considered a solution to reduce the effects of heat islands, runoff problems, as well as reduce the concentrations of pollutants present in the water; however, its potential as a filter bed is used in the treatment of sanitary sewage has never been evaluated. This work aimed to evaluate the influence of photocatalytic TiO2 addition in PC on the concentration of total phosphorus, total ammonia, nitrate, total solids, and turbidity for application in the treatment of sanitary sewage. Sunlight was used as a radiation source. A flat photocatalytic reactor was built, in which 100 liters of raw sewage were pumped, with a flow of 100 L/min over the PC slabs, covering a total area of 1 m². The TiO2 concentrations added to the PC were 3, 6, and 10%. The results indicate efficiency in the adsorption of total phosphorus, total ammonia, nitrate, total solids, and turbidity. Thus, the use of PC associated with 10% TiO2 can add efficiency to the sanitary sewage treatment process by maintaining good mechanical and hydraulic behavior.
{"title":"Pervious concrete (PC) with adition of TiO2 used in sanitary sewage treatment","authors":"W. Melo Prudêncio de Araújo, G. B. Barreto sandoval, M. de Souza Picanço, C. C. Zoe Correa, A. Negrão MAcedo","doi":"10.7764/ric.00039.21","DOIUrl":"https://doi.org/10.7764/ric.00039.21","url":null,"abstract":"Pervious concrete (PC) is considered a solution to reduce the effects of heat islands, runoff problems, as well as reduce the concentrations of pollutants present in the water; however, its potential as a filter bed is used in the treatment of sanitary sewage has never been evaluated. This work aimed to evaluate the influence of photocatalytic TiO2 addition in PC on the concentration of total phosphorus, total ammonia, nitrate, total solids, and turbidity for application in the treatment of sanitary sewage. Sunlight was used as a radiation source. A flat photocatalytic reactor was built, in which 100 liters of raw sewage were pumped, with a flow of 100 L/min over the PC slabs, covering a total area of 1 m². The TiO2 concentrations added to the PC were 3, 6, and 10%. The results indicate efficiency in the adsorption of total phosphorus, total ammonia, nitrate, total solids, and turbidity. Thus, the use of PC associated with 10% TiO2 can add efficiency to the sanitary sewage treatment process by maintaining good mechanical and hydraulic behavior.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121115424","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}
This article addresses the development of a model for the material supply planning and management in the construction industry, using System Dynamics, supported by AHP supplier selection methods, evaluation and monitoring with ABC classification, all mediated by Vensim data analysis software. The supply management in the construction industry is studied and analyzed based on a collaborative model between suppliers and builders, under the CPFR model and the integration of the Last Planner System, which contributes to optimize the use of resources that allow completing all social interest housing (VIS) construction projects. The model simulates the impact and performance produced in the collaborative system, compliance with planning and profitability in VIS projects, appropriate selection, and supplier evaluation and monitoring. Finally, this model allows those who make strategic decisions in VIS projects to identify the most critical variables, assess their contribution, and make the right decisions to eliminate waste due to waiting time.
{"title":"Material supply planning and management model for social housing projects in a construction company","authors":"C. Robles, E. Rangel, N. Sánchez","doi":"10.7764/ric.00025.21","DOIUrl":"https://doi.org/10.7764/ric.00025.21","url":null,"abstract":"This article addresses the development of a model for the material supply planning and management in the construction industry, using System Dynamics, supported by AHP supplier selection methods, evaluation and monitoring with ABC classification, all mediated by Vensim data analysis software. The supply management in the construction industry is studied and analyzed based on a collaborative model between suppliers and builders, under the CPFR model and the integration of the Last Planner System, which contributes to optimize the use of resources that allow completing all social interest housing (VIS) construction projects. The model simulates the impact and performance produced in the collaborative system, compliance with planning and profitability in VIS projects, appropriate selection, and supplier evaluation and monitoring. Finally, this model allows those who make strategic decisions in VIS projects to identify the most critical variables, assess their contribution, and make the right decisions to eliminate waste due to waiting time.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"625 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115106678","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}
In the present work, the seismic response of a reinforced concrete building representative of modern multi-family residences of medium height in the southern zone of Peru was estimated. This region was considered because we can find growing urban areas with a variety of altitudes and consequently different seismic conditions, which can be found in the three countries of the case study, in accordance with the seismic standards of the Pacific area corresponding to the current official directives of Peru (E.030, 2018), Chile (NCh433, 2012) and Ecuador (NEC, 2015), using spectral modal analysis with the purpose of highlighting the most relevant aspects in the standards and identifying possible missing parameters that prominently influence the structural demand. The analysis included the estimation of shear forces, spectral acceleration and relative inter-story displacement, including variables such as seismic zoning, soil typology, category of use, structural system, among others; considering the approach of a uniform scheme for the comparison of limits between the relative inter-story displacement established in each standard. The process was carried out from numerical models of a 10-story reinforced concrete building consisting of frames and structural walls; finding, among others, that the highest acceleration demand at surface level in coastal regions for a rocky soil (Vs ≥ 900 m/s) corresponds to Peru, followed by Ecuador and Chile. It is concluded in general, that the highest demands and the most restrictive limits for different seismic zones and different soil conditions correspond to the regulatory provisions of Peru.
{"title":"Seismic response for a reinforced concrete residential building according to South American standards in the Pacific zone.","authors":"","doi":"10.7764/ric.00057.21","DOIUrl":"https://doi.org/10.7764/ric.00057.21","url":null,"abstract":"In the present work, the seismic response of a reinforced concrete building representative of modern multi-family residences of medium height in the southern zone of Peru was estimated. This region was considered because we can find growing urban areas with a variety of altitudes and consequently different seismic conditions, which can be found in the three countries of the case study, in accordance with the seismic standards of the Pacific area corresponding to the current official directives of Peru (E.030, 2018), Chile (NCh433, 2012) and Ecuador (NEC, 2015), using spectral modal analysis with the purpose of highlighting the most relevant aspects in the standards and identifying possible missing parameters that prominently influence the structural demand. The analysis included the estimation of shear forces, spectral acceleration and relative inter-story displacement, including variables such as seismic zoning, soil typology, category of use, structural system, among others; considering the approach of a uniform scheme for the comparison of limits between the relative inter-story displacement established in each standard. The process was carried out from numerical models of a 10-story reinforced concrete building consisting of frames and structural walls; finding, among others, that the highest acceleration demand at surface level in coastal regions for a rocky soil (Vs ≥ 900 m/s) corresponds to Peru, followed by Ecuador and Chile. It is concluded in general, that the highest demands and the most restrictive limits for different seismic zones and different soil conditions correspond to the regulatory provisions of Peru.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134197090","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}
Nowadays, an approximation of the concepts of engineering and art is required, since they are nothing more than modes of expression with which the engineer, like the artist, becomes a maker of form. Beyond the materiality of bridges, dams, or buildings, the engineering work configures a product of sensibility that intellectually provokes the spectator in the same way that conceptual art does, so that the value of engineering must be adjectivized as significant. Just as one cannot claim that art that is recognized as commercial is not art because it has a market value; it is pure reductionism to deny that engineering and art share qualities, beyond its primary function. What both manifestations have in common is significant value, and this is what allows us to unify properties in an attempt to define what can be considered art.
{"title":"When engineering is art: The meaningful value","authors":"M. J. Rosado","doi":"10.7764/ric.00026.21","DOIUrl":"https://doi.org/10.7764/ric.00026.21","url":null,"abstract":"Nowadays, an approximation of the concepts of engineering and art is required, since they are nothing more than modes of expression with which the engineer, like the artist, becomes a maker of form. Beyond the materiality of bridges, dams, or buildings, the engineering work configures a product of sensibility that intellectually provokes the spectator in the same way that conceptual art does, so that the value of engineering must be adjectivized as significant. Just as one cannot claim that art that is recognized as commercial is not art because it has a market value; it is pure reductionism to deny that engineering and art share qualities, beyond its primary function. What both manifestations have in common is significant value, and this is what allows us to unify properties in an attempt to define what can be considered art.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133533781","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}
G. B. Barreto sandoval, Lúıs Soares Mota, R. Pieralisi, K. D. B. De Souza Risson
The phenomenon of clogging in pervious concrete (PC) has been one of the main causes of the hydraulic useful life reduction. This phenomenon begins with the partial or total clogging of the pore network and consequently the reduction of the permeability coefficient. Considering that the porous network of the PC is directly related to the aggregate used, the present work aims to evaluate the influence of granulometry on the clogging of the PC. The results showed that the largest aggregate size (D_max=19 mm) favors the hydraulic properties of the material. However, the variation of the granulometry grading distribution (poorly graded and single-sized) does not generate a significant difference in such results. In terms of clogging, there was a marked effect on the type of the granulometry grading distribution, the use of poorly graded aggregates led to a lower permeability reduction due to clogging when compared to PCs with single-sized aggregates.
{"title":"Influence of coarse aggregate granulometry on clogging in pervious concrete","authors":"G. B. Barreto sandoval, Lúıs Soares Mota, R. Pieralisi, K. D. B. De Souza Risson","doi":"10.7764/ric.00062.21","DOIUrl":"https://doi.org/10.7764/ric.00062.21","url":null,"abstract":"The phenomenon of clogging in pervious concrete (PC) has been one of the main causes of the hydraulic useful life reduction. This phenomenon begins with the partial or total clogging of the pore network and consequently the reduction of the permeability coefficient. Considering that the porous network of the PC is directly related to the aggregate used, the present work aims to evaluate the influence of granulometry on the clogging of the PC. The results showed that the largest aggregate size (D_max=19 mm) favors the hydraulic properties of the material. However, the variation of the granulometry grading distribution (poorly graded and single-sized) does not generate a significant difference in such results. In terms of clogging, there was a marked effect on the type of the granulometry grading distribution, the use of poorly graded aggregates led to a lower permeability reduction due to clogging when compared to PCs with single-sized aggregates.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"117 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115127736","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}
S. P. Muñoz Pérez, A. Serrato Mio, C. Burga Delgado
In the world of construction, the amount of clay brick waste (CCB) from demolition and construction is increasing considerably, and such waste is reused to mitigate environmental pollution. The present research aimed to make a systematic literature review on the mechanical properties of concrete by adding CCB as a partial substitute for coarse sand, whose methodology was to review 80 papers indexed in database such as Scopus, Ebsco Host, Scielo comprised between the years 2017 to 2021. As results were found that the mechanical properties of concrete improve by adding brick waste, process in which the CCB are crushed with the Angels abrasion machine, the sand samples were partially replaced in 15%, 20% and 25% of the CCB as partial substitute of the sand the results of this addition showed that when the addition is respected a good compressive strength is obtained, but when it exceeds 30% would cause a low density due to high absorption of the CCB. It is concluded that the replacement of CCB by sand can be used in the production of concrete because it improves its mechanical properties in addition to protecting the environment.
{"title":"Review of the mechanical properties of concrete by adding clay brick residues as a partial substitute for coarse sand","authors":"S. P. Muñoz Pérez, A. Serrato Mio, C. Burga Delgado","doi":"10.7764/ric.00050.21","DOIUrl":"https://doi.org/10.7764/ric.00050.21","url":null,"abstract":"In the world of construction, the amount of clay brick waste (CCB) from demolition and construction is increasing considerably, and such waste is reused to mitigate environmental pollution. The present research aimed to make a systematic literature review on the mechanical properties of concrete by adding CCB as a partial substitute for coarse sand, whose methodology was to review 80 papers indexed in database such as Scopus, Ebsco Host, Scielo comprised between the years 2017 to 2021. As results were found that the mechanical properties of concrete improve by adding brick waste, process in which the CCB are crushed with the Angels abrasion machine, the sand samples were partially replaced in 15%, 20% and 25% of the CCB as partial substitute of the sand the results of this addition showed that when the addition is respected a good compressive strength is obtained, but when it exceeds 30% would cause a low density due to high absorption of the CCB. It is concluded that the replacement of CCB by sand can be used in the production of concrete because it improves its mechanical properties in addition to protecting the environment.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125781029","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}
G. Barreto, A. Alves, I. Galobardes, N. Schwantes-cezario, B. M. Toralles
To study the influence of the curing procedure polymer-modified cement mortars (PMCM) were realized in two stages. In stage 1, PMCM with different percentages of PVA (5, 10, and 15%) were produced considering two times of PVA addition in the mix (3 and 6 minutes) evaluating the fresh and the hardened state. Stage 2, focuses on analyses of different cure procedures: dry, wet, and two types of intermittent cure (dry/wet and wet/dry) by compressive, tensile strength, water absorption, and dynamic modulus of elasticity. In stage 1, the mixtures produced with 10 and 15% of PVA were selected for their results. Regarding the time of addition of the PVA to the mix, the results obtained do not show significant differences when the samples were produced with the two times. Then the addition time of 3 minutes is considered optimal, for manufacturing efficiency. In stage 2, the results show that the cure influences the performance of the PMCM, wherein the M1 cure showed the best results in the mechanical properties (justified by the correct hydration of the cement). In general, the incorporation of polymer reduced the absorption of water and the dynamic modulus of elasticity, thus contributing to producing more durable materials.
{"title":"Influence of the cure procedure on the properties of Polymer-Modified Cement Mortars (PMCM)","authors":"G. Barreto, A. Alves, I. Galobardes, N. Schwantes-cezario, B. M. Toralles","doi":"10.7764/ric.00037.21","DOIUrl":"https://doi.org/10.7764/ric.00037.21","url":null,"abstract":"To study the influence of the curing procedure polymer-modified cement mortars (PMCM) were realized in two stages. In stage 1, PMCM with different percentages of PVA (5, 10, and 15%) were produced considering two times of PVA addition in the mix (3 and 6 minutes) evaluating the fresh and the hardened state. Stage 2, focuses on analyses of different cure procedures: dry, wet, and two types of intermittent cure (dry/wet and wet/dry) by compressive, tensile strength, water absorption, and dynamic modulus of elasticity. In stage 1, the mixtures produced with 10 and 15% of PVA were selected for their results. Regarding the time of addition of the PVA to the mix, the results obtained do not show significant differences when the samples were produced with the two times. Then the addition time of 3 minutes is considered optimal, for manufacturing efficiency. In stage 2, the results show that the cure influences the performance of the PMCM, wherein the M1 cure showed the best results in the mechanical properties (justified by the correct hydration of the cement). In general, the incorporation of polymer reduced the absorption of water and the dynamic modulus of elasticity, thus contributing to producing more durable materials.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130074226","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}
J. N. Soares Santos, V. G. O. Oliveira Almeida, F. M. Cavalcante Melo, H. A. de Oliveira
Lightweight concrete is characterized by its low density due to the incorporation of lightweight materials such as aggregate clay or lightweight materials in general. In the city of Aracaju there are companies that promote tire reconditioning generating large amount of waste powder. This study aims to study the reuse of tire rubber waste in lightweight aggregate clay concrete. An experimental program for the analysis of these concretes was developed, varying the percentage of 1, 2.5 and 5% of the tire rubber residue in replacement of the natural fine aggregate and replacing 100% of the natural coarse aggregate with expanded clay aggregate(50% C1506 expanded clay aggregateand 50% expanded clay aggregateC2215). The materials (cement, sand, expanded clays and tire rubber residue) were characterized by granulometric analysis tests and unit mass. The hardened concrete was evaluated by mechanical tests of axial compressive strength, modulus of elasticity and tensile strength by diametral compression, physical tests of water absorption and specific mass, as well as scanning electron microscopy image analysis. The use of expanded clay aggregateand 1% of tire rubber residue ensured better mechanical strength, lower water absorption and higher specific mass than mixtures with 2.5 and 5%, reaching values close to the reference concrete, and the residue be an alternative for reuse avoiding disposal.
{"title":"Reuse of tire waste in light concrete","authors":"J. N. Soares Santos, V. G. O. Oliveira Almeida, F. M. Cavalcante Melo, H. A. de Oliveira","doi":"10.7764/ric.000263.21","DOIUrl":"https://doi.org/10.7764/ric.000263.21","url":null,"abstract":"Lightweight concrete is characterized by its low density due to the incorporation of lightweight materials such as aggregate clay or lightweight materials in general. In the city of Aracaju there are companies that promote tire reconditioning generating large amount of waste powder. This study aims to study the reuse of tire rubber waste in lightweight aggregate clay concrete. An experimental program for the analysis of these concretes was developed, varying the percentage of 1, 2.5 and 5% of the tire rubber residue in replacement of the natural fine aggregate and replacing 100% of the natural coarse aggregate with expanded clay aggregate(50% C1506 expanded clay aggregateand 50% expanded clay aggregateC2215). The materials (cement, sand, expanded clays and tire rubber residue) were characterized by granulometric analysis tests and unit mass. The hardened concrete was evaluated by mechanical tests of axial compressive strength, modulus of elasticity and tensile strength by diametral compression, physical tests of water absorption and specific mass, as well as scanning electron microscopy image analysis. The use of expanded clay aggregateand 1% of tire rubber residue ensured better mechanical strength, lower water absorption and higher specific mass than mixtures with 2.5 and 5%, reaching values close to the reference concrete, and the residue be an alternative for reuse avoiding disposal.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130149764","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}
The use of unconventional materials has been a widely studied and used technique around the world. The results of the comparative analysis of a dense cold mix of aggregates with the addition of asphaltite from a technical and economic point of view is reported. The study was carried out using the methods developed by Marshall and Ramcodes, which characterized the aggregates first, in order to make an accurate comparison between the specifications and volumetric properties obtained and determine if asphaltite can be used in the construction of layers of flexible pavements in Colombia. The mix designed for the gradation of the central limit of the specifications using asphaltite meets the design criteria for a cold dense mix used in patching work except for flow. These mixtures can have a better performance than conventional mixtures while remaining economic. The use of Pesca, Boyacá asphaltites as a fine aggregate in a dense cold mix with asphalt emulsion is promising. This is due to its increased stability at an initial manufacturing cost which is lower than the cost of a conventional mix.
{"title":"Feasibility of using asphaltites from Pesca Boyacá in flexible pavement structures","authors":"","doi":"10.7764/ric.00054.21","DOIUrl":"https://doi.org/10.7764/ric.00054.21","url":null,"abstract":"The use of unconventional materials has been a widely studied and used technique around the world. The results of the comparative analysis of a dense cold mix of aggregates with the addition of asphaltite from a technical and economic point of view is reported. The study was carried out using the methods developed by Marshall and Ramcodes, which characterized the aggregates first, in order to make an accurate comparison between the specifications and volumetric properties obtained and determine if asphaltite can be used in the construction of layers of flexible pavements in Colombia. The mix designed for the gradation of the central limit of the specifications using asphaltite meets the design criteria for a cold dense mix used in patching work except for flow. These mixtures can have a better performance than conventional mixtures while remaining economic. The use of Pesca, Boyacá asphaltites as a fine aggregate in a dense cold mix with asphalt emulsion is promising. This is due to its increased stability at an initial manufacturing cost which is lower than the cost of a conventional mix.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129121126","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}
Man-made and natural disasters destroy the buildings and render their habitable and operational functionalities unsafe and inappropriate. Thus, stakeholders shall respond to these catastrophes, assess their damages and assign suitable measures to overcome them. Despite several constraints in their implementations, multi-criteria decision-making is of paramount necessity to bridge the gaps between the adopted measures and the requested assistances. Therefore, this thesis will focus on the selection of criteria to conduct the objective and professional assessment. Chapter 1 will underline the topic importance and the primordiality to create a unified guideline for DMs to test the properties and help their residents. Therefore, chapter 2 reviews the numerous approaches and articles to specify their failures in satisfying the stakeholders and contribute in a JIT support. The condition assessments classes and types differ among fields and properties; thus, DMs shall apply the appropriate and accurate tool in examining and scoring their distresses. In the light of multiple techniques, extensions and combinations, this document introduced the first combined method, ITARA-R- modified TOPSIS, for weights eliciting, consistent buildings assessing and categorizing. The R-TOPSIS grants the accuracy and independence from rank reversal problems. Chapter 3 prepared the MCDM process by evaluating the current tools and techniques and result in the creation of a new MCDM modular approach. Thereafter, the modification of this classical TOPSIS approach by adding threshold alternatives discriminates among housing assistance classifications. On the other hand, the thresholds are also determined in weights allocations as well via the indifference threshold-based attribute ratio analysis. The proposed method is based on indifference thresholds and threshold alternatives scores on the selected. The assessment and evaluation of the previous publications and papers resulted in detecting the gaps in their approach and to orient the DMs toward a reliable yet flexible MCDM extension. Thereafter, its application prior Beirut blasts damaged buildings validate its contribution in the decision-making field and investigates its methods’ performance. The results validate its goals satisfactions and accomplishments; hence, modification of the combined tools enables its application for multiple catastrophes, situations, assets and stakeholders. Chapter 4 and 5 validate the work efficacity and flexibility and introduce a new methodology in housing support.
{"title":"Combination of the Modified TOPSIS and ITARA in Housing Assistance and Building Assessments","authors":"H. Kazzni, J. Daba, N. Semaan","doi":"10.7764/ric.00070.21","DOIUrl":"https://doi.org/10.7764/ric.00070.21","url":null,"abstract":"Man-made and natural disasters destroy the buildings and render their habitable and operational functionalities unsafe and inappropriate. Thus, stakeholders shall respond to these catastrophes, assess their damages and assign suitable measures to overcome them. Despite several constraints in their implementations, multi-criteria decision-making is of paramount necessity to bridge the gaps between the adopted measures and the requested assistances. Therefore, this thesis will focus on the selection of criteria to conduct the objective and professional assessment. Chapter 1 will underline the topic importance and the primordiality to create a unified guideline for DMs to test the properties and help their residents. Therefore, chapter 2 reviews the numerous approaches and articles to specify their failures in satisfying the stakeholders and contribute in a JIT support. The condition assessments classes and types differ among fields and properties; thus, DMs shall apply the appropriate and accurate tool in examining and scoring their distresses. In the light of multiple techniques, extensions and combinations, this document introduced the first combined method, ITARA-R- modified TOPSIS, for weights eliciting, consistent buildings assessing and categorizing. The R-TOPSIS grants the accuracy and independence from rank reversal problems. Chapter 3 prepared the MCDM process by evaluating the current tools and techniques and result in the creation of a new MCDM modular approach. Thereafter, the modification of this classical TOPSIS approach by adding threshold alternatives discriminates among housing assistance classifications. On the other hand, the thresholds are also determined in weights allocations as well via the indifference threshold-based attribute ratio analysis. The proposed method is based on indifference thresholds and threshold alternatives scores on the selected. The assessment and evaluation of the previous publications and papers resulted in detecting the gaps in their approach and to orient the DMs toward a reliable yet flexible MCDM extension. Thereafter, its application prior Beirut blasts damaged buildings validate its contribution in the decision-making field and investigates its methods’ performance. The results validate its goals satisfactions and accomplishments; hence, modification of the combined tools enables its application for multiple catastrophes, situations, assets and stakeholders. Chapter 4 and 5 validate the work efficacity and flexibility and introduce a new methodology in housing support.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120949269","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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