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An Experimental Investigation on Geopolymer Concrete Utilising Micronized Biomass Silica and GGBS
KSCE Journal of Civil Engineering ( IF 2.2 ) Pub Date : 2021-03-18 , DOI: 10.1007/s12205-021-1477-8
Srinivasan Vediyappan , Pazhani Kandukalpatti Chinnaraj , Bharatkumar Bhajantri Hanumantraya , Sundar Kumar Subramanian

In the atmosphere greenhouse gases concentration has rapidly increased due to anthropogenic activities which cause global warming. Portland cement manufacturing process requires enormous amount of energy and also consumes huge quantity of natural resources. To overcome this issue, Portland cement free geopolymer concrete is produced with ground granulated blast furnace slag (GGBS) as main binder and micronized biomass silica (MBS) is substituted in place of GGBS at different quantities. Experimental investigation highlighting mechanical properties and durability performance of geopolymer concrete mixes produced with GGBS and MBS are presented here. Rice husk is used in the manufacture of MBS. Compressive, flexural, split tensile strength, elastic modulus and durability parameters like water absorption, sorptivity, rapid chloride permeability test were conducted. Geopolymer concrete mix with 20 percent MBS and remaining GGBS as binder was found to have optimal strength and durability performance. However, the compressive strength was above the target design strength for all the geopolymer concrete mixes. This experimental investigation vindicates the feasibility of utilizing MBS as a binder raw material in geopolymer concrete production.



中文翻译:

利用微粉化生物质二氧化硅和GGBS的地聚合物混凝土的实验研究

在大气中,由于人为活动导致全球变暖,温室气体浓度迅速增加。波特兰水泥的生产过程需要大量的能源,也消耗大量的自然资源。为了克服这个问题,使用磨碎的高炉矿渣(GGBS)作为主要粘合剂生产不含波特兰水泥的地聚合物混凝土,并以不同的量替代了微粉化的生物质二氧化硅(MBS)代替GGBS。这里介绍了实验研究,突出了用GGBS和MBS生产的地聚合物混凝土混合物的机械性能和耐久性能。稻壳用于制造MBS。压缩,弯曲,劈裂抗张强度,弹性模量和耐久性参数,例如吸水率,吸水性,进行了快速氯化物渗透性测试。发现含有20%MBS和剩余GGBS作为粘合剂的地聚合物混凝土混合物具有最佳的强度和耐久性能。但是,所有地质聚合物混凝土混合物的抗压强度均高于目标设计强度。这项实验研究证明了在土聚合物混凝土生产中使用MBS作为粘结剂原料的可行性。

更新日期:2021-05-07
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