Concrete is one of the most studied industrial products with the aim of improving its durability, strength, and workability, as well as developing innovative alternatives in its production to reduce the environmental footprint (Rivera, 2013). This research validates the use of industrial waste generated in the department of Boyacá - Colombia, within the production of concrete for the construction of rigid pavements. The research followed several stages, beginning with the physical, chemical, and mechanical characterization of the materials and the design of the standard mixture following the ACI 211 methodology. Subsequently, the 25%, 50%, 75%, and 100% of the gravel was replaced by electric arc furnace slag (EAFS), and 20, 30 and 40% of the sand by the recycled ground glass (RGG). Finally, the compressive strength of the concrete mixtures was analyzed.
{"title":"COMPRESSIVE STRENGTH OF CONCRETE MADE WITH ELECTRIC ARC FURNACE SLAG AND RECYCLED GROUND GLASS AS REPLACEMENT OF COARSE AND FINE AGGREGATE","authors":"Y. A. Pérez Rojas, E. Vera López","doi":"10.7764/ric.00007.21","DOIUrl":"https://doi.org/10.7764/ric.00007.21","url":null,"abstract":"Concrete is one of the most studied industrial products with the aim of improving its durability, strength, and workability, as well as developing innovative alternatives in its production to reduce the environmental footprint (Rivera, 2013). This research validates the use of industrial waste generated in the department of Boyacá - Colombia, within the production of concrete for the construction of rigid pavements. The research followed several stages, beginning with the physical, chemical, and mechanical characterization of the materials and the design of the standard mixture following the ACI 211 methodology. Subsequently, the 25%, 50%, 75%, and 100% of the gravel was replaced by electric arc furnace slag (EAFS), and 20, 30 and 40% of the sand by the recycled ground glass (RGG). Finally, the compressive strength of the concrete mixtures was analyzed.","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":"121946232","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}
Concrete is one of the most used materials in the building sector. Inevitably, concrete gains strength and develops shrinkage cracks during the curing process. Shrinkage cracks provide an entry point for reactive fluids to get into the concrete core. Under favorable conditions, the fluids reduce the pH of the core and consequentially corrode the reinforcing bars. This research shows the use of Bacillus megaterium MTCC 3353, which produces calcium carbonate and closes the minute fissures. Part substitution of cement with metakaolin was also done in the study. It was seen that the bio-based concrete specimens enhanced the mechanical strength and durability parameters. The calcite precipitation was validated using a microstructure study. FESEM and XRD tests show the presence of calcite (calcium carbonate) inside the concrete structure. The bacteria were tested for their growth when superplasticizers were added to them. The bacteria showed normal growth compared to the conventional testing
{"title":"Influence of bacteria megaterium on strength and durability properties of concrete partially substituted with metakaolin","authors":"V. Rameshkumar, S. V. Vaishnavi Devi","doi":"10.7764/ric.00074.21","DOIUrl":"https://doi.org/10.7764/ric.00074.21","url":null,"abstract":"Concrete is one of the most used materials in the building sector. Inevitably, concrete gains strength and develops shrinkage cracks during the curing process. Shrinkage cracks provide an entry point for reactive fluids to get into the concrete core. Under favorable conditions, the fluids reduce the pH of the core and consequentially corrode the reinforcing bars. This research shows the use of Bacillus megaterium MTCC 3353, which produces calcium carbonate and closes the minute fissures. Part substitution of cement with metakaolin was also done in the study. It was seen that the bio-based concrete specimens enhanced the mechanical strength and durability parameters. The calcite precipitation was validated using a microstructure study. FESEM and XRD tests show the presence of calcite (calcium carbonate) inside the concrete structure. The bacteria were tested for their growth when superplasticizers were added to them. The bacteria showed normal growth compared to the conventional testing","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"6 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":"132429648","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}
Miguel Regalado, E. Santa María, A. Gutierrez, D. Syón, J. Altamirano, L. Villanes, M. Rojas
The purpose of the present paper is to set forth a methodology proposal for assessing quality pathologies (aesthetic and superficial) in historic buildings located in the city center of Lima (Peru), in order to identify the pathologies having the strongest impact on the overall quality of the structure, as well as their main causes. As a study case, the methodology is applied to the “Basilica and Convent of San Francisco”, which allowed concluding that fissures are the pathologies that most affect the structure and earthquakes, and external vibrations are the main causes thereof
{"title":"Quality pathology assessment in historic buildings – case of the “basilica and convent of San Francisco”","authors":"Miguel Regalado, E. Santa María, A. Gutierrez, D. Syón, J. Altamirano, L. Villanes, M. Rojas","doi":"10.7764/ric.00034.21","DOIUrl":"https://doi.org/10.7764/ric.00034.21","url":null,"abstract":"The purpose of the present paper is to set forth a methodology proposal for assessing quality pathologies (aesthetic and superficial) in historic buildings located in the city center of Lima (Peru), in order to identify the pathologies having the strongest impact on the overall quality of the structure, as well as their main causes. As a study case, the methodology is applied to the “Basilica and Convent of San Francisco”, which allowed concluding that fissures are the pathologies that most affect the structure and earthquakes, and external vibrations are the main causes thereof","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":"115654104","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}
Néstor Ulloa, Mirian Jiménez, Byron Serrano, Carlos Serrano
En los últimos años, el uso de zeolitas naturales para sintetizar compuestos de geopolímero (pastas, morteros y hormigones) ha despertado gran interés entre los investigadores que buscan reemplazar la utilización del cemento Portland ordinario de forma parcial o total. El objetivo principal de este documento es ampliar la información disponible sobre el desarrollo de materiales alternativos, para lo cual el presente trabajo de investigación preparó muestras de mortero de geopolímero basadas en zeolitas naturales como posible aplicación de material de construcción, en las cuales se evaluó sus propiedades mecánicas a través de la resistencia a la compresión. Adicionalmente, se optimizó el diseño de la mezcla utilizando dos activadores alcalinos (NaOH 14M y Na2SiO3) en diferentes proporciones, arena de río como agregado fino, tiempo y temperatura de curado. Todas las muestras se caracterizaron mediante difracción cuantitativa de rayos X, SEM-EDS, análisis simultáneo TGA-DSC y resistencia a la compresión. Los resultados obtenidos demostraron que la mejor mezcla corresponde a: NaOH: 14M, Na2SiO3/NaOH: 3, activador/zeolita: 0.5, arena/zeolita: 1.5, curado a 60°C, que mostraron un incremento de la resistencia a la compresión (17,3 MPa) tanto a temprana edad como a largo plazo.
{"title":"GEOPOLÍMEROS BASADOS EN ZEOLITAS NATURALES COMO UNA ALTERNATIVA DE MATERIALES DE CONSTRUCCIÓN","authors":"Néstor Ulloa, Mirian Jiménez, Byron Serrano, Carlos Serrano","doi":"10.7764/ric.00011.21","DOIUrl":"https://doi.org/10.7764/ric.00011.21","url":null,"abstract":"En los últimos años, el uso de zeolitas naturales para sintetizar compuestos de geopolímero (pastas, morteros y hormigones) ha despertado gran interés entre los investigadores que buscan reemplazar la utilización del cemento Portland ordinario de forma parcial o total. El objetivo principal de este documento es ampliar la información disponible sobre el desarrollo de materiales alternativos, para lo cual el presente trabajo de investigación preparó muestras de mortero de geopolímero basadas en zeolitas naturales como posible aplicación de material de construcción, en las cuales se evaluó sus propiedades mecánicas a través de la resistencia a la compresión. Adicionalmente, se optimizó el diseño de la mezcla utilizando dos activadores alcalinos (NaOH 14M y Na2SiO3) en diferentes proporciones, arena de río como agregado fino, tiempo y temperatura de curado. Todas las muestras se caracterizaron mediante difracción cuantitativa de rayos X, SEM-EDS, análisis simultáneo TGA-DSC y resistencia a la compresión. Los resultados obtenidos demostraron que la mejor mezcla corresponde a: NaOH: 14M, Na2SiO3/NaOH: 3, activador/zeolita: 0.5, arena/zeolita: 1.5, curado a 60°C, que mostraron un incremento de la resistencia a la compresión (17,3 MPa) tanto a temprana edad como a largo plazo.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"134 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":"122800632","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}
I. Tamaris Turizo, J. Chica Olmo, R. C. Cano Guervos
Housing prices have been the subject of many studies, and some of them have tried to determine the influencing structural and location factors through hedonic econometric models. One of the main factors considered in the literature on real estate appraisals is the location of the dwellings. For this reason, this study combines the spatial methodologies of geostatistics and spatial econometrics. On the one hand, this work uses geostatistics to estimate missing data to account for the lack of information in the sampled real estate websites. On the other hand, the explanatory factors of prices are determined through spatial econometrics. The combination of both methods facilitates estimating housing prices in Santa Marta (Colombia), solving the problem of missing data. In the modeling, the problems of spatial heteroscedasticity and multicollinearity are corrected. This combination of methods could be of great interest to company ies and public agencies related to real estate activity, which is sustained by the information available on these real estate websites.
房价一直是许多研究的主题，其中一些研究试图通过享乐计量模型来确定影响房价的结构和区位因素。在房地产评估文献中考虑的主要因素之一是住宅的位置。为此，本研究结合了地统计学和空间计量经济学的空间方法。一方面，本研究利用地质统计学来估计缺失数据，以解释样本房地产网站中信息的缺失。另一方面，通过空间计量经济学确定价格的解释因素。两种方法的结合有助于估计Santa Marta (columbia)的房价，解决了数据缺失的问题。在建模中，修正了空间异方差和多重共线性问题。这些方法的组合可能会引起与房地产活动相关的公司和公共机构的极大兴趣，这些活动是由这些房地产网站上提供的信息维持的。
{"title":"The use of geostatistics to estimate missing data in a spatial econometric model of housing prices","authors":"I. Tamaris Turizo, J. Chica Olmo, R. C. Cano Guervos","doi":"10.7764/ric.00044.21","DOIUrl":"https://doi.org/10.7764/ric.00044.21","url":null,"abstract":"Housing prices have been the subject of many studies, and some of them have tried to determine the influencing structural and location factors through hedonic econometric models. One of the main factors considered in the literature on real estate appraisals is the location of the dwellings. For this reason, this study combines the spatial methodologies of geostatistics and spatial econometrics. On the one hand, this work uses geostatistics to estimate missing data to account for the lack of information in the sampled real estate websites. On the other hand, the explanatory factors of prices are determined through spatial econometrics. The combination of both methods facilitates estimating housing prices in Santa Marta (Colombia), solving the problem of missing data. In the modeling, the problems of spatial heteroscedasticity and multicollinearity are corrected. This combination of methods could be of great interest to company ies and public agencies related to real estate activity, which is sustained by the information available on these real estate websites.","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":"127214156","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 study determine the mechanical performance of a 40 mm thick overlay using UHPFRC (Ultra High-Performance Concrete) as the outer surface for restoring a flexible pavement structure. A 30 m long test section was built, divided into two 15 m sections. Section 1 was restored with a 60 mm overlay of Hot Mix Asphalt -HMA- and Section 2 was restored with a 40 mm overlay of UHPFRC without intermediate transverse joins. The two sections were instrumented with pressure cells in order to evaluate the vertical load in the inner fiber of each restoration layer. The mechanical properties of the materials were evaluated, the structural modeling was carried out with the falling weight deflectometer (FWD) and the Bisar 3.0 software. The structural modeling showed an 82% increase in the lifecycle for the section restored with UHPFRC. The functional evaluation of the rehabilitated structures was carried out considering parameters as: friction, percentage of cracking, rutting, international roughness index -IRI- and smoothness.
{"title":"Performance of a UHPFRC overlay in the rehabilitation of a typical asphalt pavement structure","authors":"A. Melendez, L. Pena, H. Vacca, Y. Alvarado","doi":"10.7764/ric.00038.21","DOIUrl":"https://doi.org/10.7764/ric.00038.21","url":null,"abstract":"This study determine the mechanical performance of a 40 mm thick overlay using UHPFRC (Ultra High-Performance Concrete) as the outer surface for restoring a flexible pavement structure. A 30 m long test section was built, divided into two 15 m sections. Section 1 was restored with a 60 mm overlay of Hot Mix Asphalt -HMA- and Section 2 was restored with a 40 mm overlay of UHPFRC without intermediate transverse joins. The two sections were instrumented with pressure cells in order to evaluate the vertical load in the inner fiber of each restoration layer. The mechanical properties of the materials were evaluated, the structural modeling was carried out with the falling weight deflectometer (FWD) and the Bisar 3.0 software. The structural modeling showed an 82% increase in the lifecycle for the section restored with UHPFRC. The functional evaluation of the rehabilitated structures was carried out considering parameters as: friction, percentage of cracking, rutting, international roughness index -IRI- and smoothness.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"27 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":"121613796","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}
Nadia Baroudi, S. El-Zahab, N. Semaan, A. Al-Sakkaf, E. M. Abdelkader
This paper introduces a novel non-linear weighting model to evaluate the different aspects of infrastructure. In this regard, three approaches are presented to compute the percents of infrastructure indicators, namely analytical hierarchy process, Shannon entropy and fuzzy set theory. A unified weighting model is then proposed to aggregate the weighting vectors obtained from the three approaches. The developed model is designed to model the feedback of the experts, actual condition of the infrastructure and encountered uncertainties. Results highlighted that water has the highest relative importance with 52.65% followed by electricity with 34.12% while telecommunication has the least relative importance with 2.69%. To apply a more practical sense to the proposed framework, a sample assessment of the Lebanese city of Tripoli’s civil infrastructure was carried out in this paper. The developed model is expected to support planners and policymakers with a platform that enables them to efficiently evaluate the infrastructure’s condition
{"title":"AN INTEGRATED INFRASTRUCTURE PRIORITIZATION MODEL: CASE STUDY OF TRIPOLI, LEBANON","authors":"Nadia Baroudi, S. El-Zahab, N. Semaan, A. Al-Sakkaf, E. M. Abdelkader","doi":"10.7764/ric.00023.21","DOIUrl":"https://doi.org/10.7764/ric.00023.21","url":null,"abstract":"This paper introduces a novel non-linear weighting model to evaluate the different aspects of infrastructure. In this regard, three approaches are presented to compute the percents of infrastructure indicators, namely analytical hierarchy process, Shannon entropy and fuzzy set theory. A unified weighting model is then proposed to aggregate the weighting vectors obtained from the three approaches. The developed model is designed to model the feedback of the experts, actual condition of the infrastructure and encountered uncertainties. Results highlighted that water has the highest relative importance with 52.65% followed by electricity with 34.12% while telecommunication has the least relative importance with 2.69%. To apply a more practical sense to the proposed framework, a sample assessment of the Lebanese city of Tripoli’s civil infrastructure was carried out in this paper. The developed model is expected to support planners and policymakers with a platform that enables them to efficiently evaluate the infrastructure’s condition","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":"129033155","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 concrete construction materials are now being judged not only from their economical characteristics but also from their serviceability. Advancements in the concrete production now also focus on improving the fire resistant behaviour of concrete. The replacement of fine aggregates is much more desirable when they possess adequate fire resistant characteristics. The present research work understands the urgent need to pay attention to the fire resistant behaviour of concrete simultaneously minimizing the use of Natural River aggregate. In addition to the fine aggregate replacement nano alumina is used as cement additive to beneficially support the concrete durability through their nano characteristics. Zircon sand is used upto 50% of the natural river sand aggregate and nano alumina is used at 2% by weight of the cement binder. This research work focuses on the utilization of zircon sand as fine aggregate to produce concrete.
{"title":"Properties of Nano-Alumina Concrete with Zircon Sand as Fines under Varied Elevated Temperatures","authors":"N. Sakthieswaran","doi":"10.7764/ric.00065.21","DOIUrl":"https://doi.org/10.7764/ric.00065.21","url":null,"abstract":"The concrete construction materials are now being judged not only from their economical characteristics but also from their serviceability. Advancements in the concrete production now also focus on improving the fire resistant behaviour of concrete. The replacement of fine aggregates is much more desirable when they possess adequate fire resistant characteristics. The present research work understands the urgent need to pay attention to the fire resistant behaviour of concrete simultaneously minimizing the use of Natural River aggregate. In addition to the fine aggregate replacement nano alumina is used as cement additive to beneficially support the concrete durability through their nano characteristics. Zircon sand is used upto 50% of the natural river sand aggregate and nano alumina is used at 2% by weight of the cement binder. This research work focuses on the utilization of zircon sand as fine aggregate to produce concrete.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"107 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":"114629344","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}
Executing projects according to its estimated cost and schedule is fundamental to guarantee the economic and financial viability of the businesses associated with them. In this context, the estimated duration of an activity is very important for the development of the project schedule and budget. Therefore, determining the main factors that contribute to labor productivity becomes imperative. This research identified the main factors affecting labor productivity in construction projects around the world. Then, it was verified the pertinence of these factors to the Brazilean industry . The 56 factors identified were prioritized, according to the importance index, and categorized into four main groups: management, labor, external and technological. Factors such as: poor material management, lack of construction manager’s leadership, site supervision inefficiency, strikes and lack of tools are at the top of the list. It was also observed the balance between the management, technological and external groups. Finally, when compared to researches carried out in other countries, there is a reasonable correlation between the results identified by this research and those found by previous researches.
{"title":"FACTORS AFFECTING CONSTRUCTION PRODUCTIVITY IN BRAZIL: COMPARISON WITH RECENT INTERNATIONAL RESEARCH","authors":"Marcus Sarmento, Miguel Luiz Ribeiro Ferreira","doi":"10.7764/ric.00009.21","DOIUrl":"https://doi.org/10.7764/ric.00009.21","url":null,"abstract":"Executing projects according to its estimated cost and schedule is fundamental to guarantee the economic and financial viability of the businesses associated with them. In this context, the estimated duration of an activity is very important for the development of the project schedule and budget. Therefore, determining the main factors that contribute to labor productivity becomes imperative. This research identified the main factors affecting labor productivity in construction projects around the world. Then, it was verified the pertinence of these factors to the Brazilean industry . The 56 factors identified were prioritized, according to the importance index, and categorized into four main groups: management, labor, external and technological. Factors such as: poor material management, lack of construction manager’s leadership, site supervision inefficiency, strikes and lack of tools are at the top of the list. It was also observed the balance between the management, technological and external groups. Finally, when compared to researches carried out in other countries, there is a reasonable correlation between the results identified by this research and those found by previous researches.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"112 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":"134401584","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}
En la búsqueda de asumir métodos que brinden un mejor confort en el sistema de vivienda, éstos requieren de mejores prestaciones estructurales en las edificaciones actuales. Las prácticas constructivas en la región se han ido desprestigiando con el paso del tiempo, concibiendo edificaciones vulnerables, que dejan expuesto a quienes las habitan. El objetivo de esta investigación fue analizar de forma integral las características técnicas, constructivas y de diseño de losas de concreto armado, en su implementación como estructura de soporte para techos verdes en la ciudad de Tuxtla Gutiérrez, Chiapas, México. Para realizar el análisis se consideraron las propiedades intrínsecas del miembro de soporte (losas), el estado actual en las que estas se encuentran y su diseño bajo regímenes de durabilidad. Tras realizar la investigación se encontró que los espesores de la losa y las cuantías de acero son menores para claros promedio, según lo estipulado por las normas técnicas correspondientes. Los daños por corrosión del acero son esperados y se encuentran bajo un régimen de diseño inadecuado, aunado a la deficiencia durante el proceso constructivo. Las construcciones analizadas y desarrolladas por procesos de construcción formal o de autoconstrucción evidencian patologías similares. La falta de centros de capacitación para los propietarios y los obreros que adopten los métodos de autoconstrucción, así como el poco rigor de las autoridades en el cumplimiento de los reglamentos de construcción se han convertido en una brecha del conocimiento clave. Finalmente, es poco probable la implementación de techos verdes en estas estructuras sin antes realizar cambios significativos en toda la construcción.
{"title":"ANALYSIS FOR IMPLEMENTING GREEN ROOFS ON REINFORCED CONCRETE SLABS. A CASE STUDY IN THE CITY OF TUXTLA GUTIERREZ, CHIAPAS, MEXICO","authors":"Víctor Manuel Sánchez Trujillo","doi":"10.7764/ric.00013.21","DOIUrl":"https://doi.org/10.7764/ric.00013.21","url":null,"abstract":"En la búsqueda de asumir métodos que brinden un mejor confort en el sistema de vivienda, éstos requieren de mejores prestaciones estructurales en las edificaciones actuales. Las prácticas constructivas en la región se han ido desprestigiando con el paso del tiempo, concibiendo edificaciones vulnerables, que dejan expuesto a quienes las habitan. El objetivo de esta investigación fue analizar de forma integral las características técnicas, constructivas y de diseño de losas de concreto armado, en su implementación como estructura de soporte para techos verdes en la ciudad de Tuxtla Gutiérrez, Chiapas, México. Para realizar el análisis se consideraron las propiedades intrínsecas del miembro de soporte (losas), el estado actual en las que estas se encuentran y su diseño bajo regímenes de durabilidad. Tras realizar la investigación se encontró que los espesores de la losa y las cuantías de acero son menores para claros promedio, según lo estipulado por las normas técnicas correspondientes. Los daños por corrosión del acero son esperados y se encuentran bajo un régimen de diseño inadecuado, aunado a la deficiencia durante el proceso constructivo. Las construcciones analizadas y desarrolladas por procesos de construcción formal o de autoconstrucción evidencian patologías similares. La falta de centros de capacitación para los propietarios y los obreros que adopten los métodos de autoconstrucción, así como el poco rigor de las autoridades en el cumplimiento de los reglamentos de construcción se han convertido en una brecha del conocimiento clave. Finalmente, es poco probable la implementación de techos verdes en estas estructuras sin antes realizar cambios significativos en toda la construcción.","PeriodicalId":369360,"journal":{"name":"Revista Ingeniería de Construcción","volume":"40 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":"131690902","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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