{"title":"Evaluación técnica de albañilería de bloques con adiciones puzolánicas","authors":"Walter Roldán, Julio Soto","doi":"10.4067/S0718-28132018000200013","DOIUrl":null,"url":null,"abstract":"espanolSe efectuan ensayos de resistencia mecanica a diversas probetas de albanileria de bloques de hormigon, reemplazando cemento Portland por puzolanas disponibles en la region de Antofagasta, Chile (ceniza volante, ceniza volcanica y polvo del desierto). Para caracterizar la resistencia de la albanileria, se ensayan a compresion bloques individuales, prismas y muretes, fabricados con hormigon con distintas combinaciones conglomerantes del tipo cemento-puzolana; las resistencias obtenidas se comparan con una mezcla patron con 100% de cemento. Los resultados indican que es factible reemplazar un porcentaje de cemento Portland por puzolanas, obteniendose resistencias muy similares, contribuyendo con ello a reducir costos de construccion y disminuyendo las emisiones de gases de efecto invernadero que se generan en la calcinacion de la materia prima. Se pretende tambien realzar la importancia de la albanileria de bloques de hormigon en la edificacion de viviendas de bajo costo y amigables con el ambiente. EnglishTests are carried out on various specimens of concrete block masonry, replacing Portland cement with pozzolans available in the region of Antofagasta, Chile (fly ash, volcanic ash and desert dust). To characterize the strength of the masonry, individual blocks, prisms and small walls are tested, made of concrete with different binder combinations «cement-pozzolan»; the obtained resistances are compared with standard mixture (100% cement). The results indicate that it is feasible to replace a percentage of Portland cement with pozzolans, obtaining very similar resistance, contributing to reduce construction costs and also, contributing to the environment by reducing cement demand and thereby reducing emissions of greenhouse gases that are generated in the calcination of the raw material. It is also pretension to enhance the importance of the masonry of concrete blocks in the construction of low-cost housing (economic and ecological).","PeriodicalId":391731,"journal":{"name":"Obras y proyectos","volume":"40 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Obras y proyectos","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4067/S0718-28132018000200013","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
espanolSe efectuan ensayos de resistencia mecanica a diversas probetas de albanileria de bloques de hormigon, reemplazando cemento Portland por puzolanas disponibles en la region de Antofagasta, Chile (ceniza volante, ceniza volcanica y polvo del desierto). Para caracterizar la resistencia de la albanileria, se ensayan a compresion bloques individuales, prismas y muretes, fabricados con hormigon con distintas combinaciones conglomerantes del tipo cemento-puzolana; las resistencias obtenidas se comparan con una mezcla patron con 100% de cemento. Los resultados indican que es factible reemplazar un porcentaje de cemento Portland por puzolanas, obteniendose resistencias muy similares, contribuyendo con ello a reducir costos de construccion y disminuyendo las emisiones de gases de efecto invernadero que se generan en la calcinacion de la materia prima. Se pretende tambien realzar la importancia de la albanileria de bloques de hormigon en la edificacion de viviendas de bajo costo y amigables con el ambiente. EnglishTests are carried out on various specimens of concrete block masonry, replacing Portland cement with pozzolans available in the region of Antofagasta, Chile (fly ash, volcanic ash and desert dust). To characterize the strength of the masonry, individual blocks, prisms and small walls are tested, made of concrete with different binder combinations «cement-pozzolan»; the obtained resistances are compared with standard mixture (100% cement). The results indicate that it is feasible to replace a percentage of Portland cement with pozzolans, obtaining very similar resistance, contributing to reduce construction costs and also, contributing to the environment by reducing cement demand and thereby reducing emissions of greenhouse gases that are generated in the calcination of the raw material. It is also pretension to enhance the importance of the masonry of concrete blocks in the construction of low-cost housing (economic and ecological).
espanolSe对各种混凝土块albanileria试样进行了机械强度测试,用智利安托法加斯塔地区可用的火山灰(粉煤灰、火山灰和沙漠尘埃)取代硅酸盐水泥。为了表征抗压性,用不同的水泥-火山灰混合混凝土制成的单个块、棱柱和墙进行了压缩试验;将获得的电阻与100%水泥的patron混合物进行比较。研究结果表明,用火山灰替代一定比例的硅酸盐水泥是可行的,获得了非常相似的强度,有助于降低建筑成本,减少原料煅烧产生的温室气体排放。它还旨在强调混凝土砌块在建造低成本和环境友好的住房中的重要性。= =地理= =根据美国人口普查,这个县的总面积为,其中土地和(2.641平方公里)水。为了确定砌体的强度,测试了用不同粘结剂组合的混凝土制成的单个块、棱镜和小墙;获得的阻力与标准混合料(100%水泥)进行了比较。结果表明that it is可行to replace百分比的波特兰水泥with pozzolans, obtaining非常类似resistance, construction contributing to reduce costs and contributing to The environment, by减少水泥需求的减少温室气体的排放量of that are generated in The calcination of The raw材料。这也是为了强调混凝土砌块在建造低成本住房(经济和生态)方面的重要性。