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Strength Properties of Geopolymer Concrete Modified with Recycled Aggregates
Iranian Journal of Science and Technology, Transactions of Civil Engineering ( IF 1.7 ) Pub Date : 2021-06-03 , DOI: 10.1007/s40996-021-00662-3
Anandh Babu Malayali , Ramesh Babu Chokkalingam , M. Muthukannan

The main goal of this paper is to investigate the effects of recycled aggregates in geopolymer pervious concrete (GPC). The usage of recycled aggregate (RA) in the construction field is getting more attention nowadays due to sustainable construction methods. In this study, natural aggregates (NA) are partially replaced with recycled aggregates such as recycled concrete aggregate and recycled brick aggregate (RBA) in geopolymer previous concrete. For preparing geopolymer, ground granulated blast furnace slag (GGBS) was used in this investigation. Activators such as 12 M sodium hydroxide and sodium silicate solutions were used to synthesize the geopolymer concrete in this investigation. The sodium silicate-to-sodium hydroxide ratio was maintained at 2.5 throughout this study. Mechanical and durability properties of GPC were determined as per Indian standards. The effects of RA in geopolymer pervious concrete were briefly investigated. It has been observed that durability properties are affected by the incorporation of recycled aggregate (RA) in geopolymer concrete. The compressive strength value of RC12 is less than that of GC12 and RB12 is less than that of RC12. The strength properties of structural beam elements were reduced due to the incorporation of recycled concrete and recycled brick aggregate in geopolymer concrete; at the same time, the reduction always lies in acceptable ranges. Validation was done using ANSYS software. This paper leads the utilization of recycled aggregates in GGBS-based GPC instant of NA at ambient curing condition.



中文翻译:

再生骨料改性地聚合物混凝土的强度性能

本文的主要目标是研究再生骨料在地质聚合物透水混凝土 (GPC) 中的影响。由于可持续的施工方法,再生骨料(RA)在建筑领域的使用现在越来越受到关注。在这项研究中,天然骨料 (NA) 被回收骨料部分替代,例如地聚合物旧混凝土中的再生混凝土骨料和再生砖骨料 (RBA)。为了制备地质聚合物,本研究中使用了磨碎的粒状高炉矿渣 (GGBS)。在本研究中,使用 12 M 氢氧化钠和硅酸钠溶液等活化剂合成地质聚合物混凝土。在整个研究过程中,硅酸钠与氢氧化钠的比例保持在 2.5。GPC 的机械和耐久性特性是根据印度标准确定的。简要研究了 RA 在地质聚合物透水混凝土中的影响。已经观察到,在地质聚合物混凝土中加入再生骨料 (RA) 会影响耐久性性能。RC12的抗压强度值小于GC12,RB12小于RC12。由于地聚合物混凝土中掺入再生混凝土和再生砖骨料,结构梁单元的强度性能降低;同时,减少总是在可接受的范围内。使用 ANSYS 软件进行验证。本文率先在环境固化条件下利用再生骨料在基于 GGBS 的 GPC 速溶 NA 中。简要研究了 RA 在地质聚合物透水混凝土中的影响。已经观察到,在地质聚合物混凝土中加入再生骨料 (RA) 会影响耐久性性能。RC12的抗压强度值小于GC12,RB12小于RC12。由于地聚合物混凝土中掺入再生混凝土和再生砖骨料,结构梁单元的强度性能降低;同时,减少总是在可接受的范围内。使用 ANSYS 软件进行验证。本文率先在环境固化条件下利用再生骨料在基于 GGBS 的 GPC 速溶 NA 中。简要研究了 RA 在地质聚合物透水混凝土中的影响。已经观察到,在地质聚合物混凝土中加入再生骨料 (RA) 会影响耐久性性能。RC12的抗压强度值小于GC12,RB12小于RC12。由于地聚合物混凝土中掺入再生混凝土和再生砖骨料,结构梁单元的强度性能降低;同时,减少总是在可接受的范围内。使用 ANSYS 软件进行验证。本文率先在环境固化条件下利用再生骨料在基于 GGBS 的 GPC 速溶 NA 中。RC12的抗压强度值小于GC12,RB12小于RC12。由于地聚合物混凝土中掺入再生混凝土和再生砖骨料,结构梁单元的强度性能降低;同时,减少总是在可接受的范围内。使用 ANSYS 软件进行验证。本文率先在环境固化条件下利用再生骨料在基于 GGBS 的 GPC 速溶 NA 中。RC12的抗压强度值小于GC12,RB12小于RC12。由于地聚合物混凝土中掺入再生混凝土和再生砖骨料,结构梁单元的强度性能降低;同时,减少总是在可接受的范围内。使用 ANSYS 软件进行验证。本文率先在环境固化条件下利用再生骨料在基于 GGBS 的 GPC 速溶 NA 中。

更新日期:2021-06-03
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