Investigating the Possibility of Using Clay and Fly Ash in the Production of Geopolymer Mortar

N. Manjunath
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Abstract

Abstract. The concept polymer concrete has numerous advantages over the convention concrete similarly in mortar also which uses reactive silica presented in the pozzolanic materials which is activated using alkaline materials. This paper focused on the Geopolymer mortar with fly ash and clay as raw materials and M-Sand for fine aggregate instead of river sand. Different combinations of mixtures were prepared and compared with ordinary cement mortar. The objective of this research is to identify the properties of different combinations of geopolymer mortars with conventional cement mortar, in which the fine aggregate sourced from riverbeds is replaced by Fine aggregate manufactured using Crushing stones and testing it for compressive strength, water absorption, residual alkalinity, and acid resistance. Fly ash- clay based geopolymer shows good acid resistance and shows less reduction in weight and compressive strength than ordinary cement mortar. Permeability of geopolymer mortar is less that of ordinary cement mortar. Alkalinity of geopolymer mortar is 4-20 % higher than that of ordinary cement mortar. Fly ash- clay based geopolymer has excellent compressive strength (75.7% for red clay and 52.6% for fire clay) than the conventional cement concrete and is suitable for structural applications.
探讨用粘土和粉煤灰生产地聚合物砂浆的可能性
摘要。与传统混凝土相比,聚合物混凝土的概念有许多优点,例如在砂浆中也使用活性二氧化硅,这种活性二氧化硅是用碱性材料激活的火山灰材料。研究了以粉煤灰和粘土为原料,m砂为细骨料代替河砂的地聚合物砂浆。配制了不同的混合料,并与普通水泥砂浆进行了对比。本研究的目的是确定地聚合物砂浆与传统水泥砂浆的不同组合的性能,其中来自河床的细骨料被用碎石制造的细骨料取代,并测试其抗压强度、吸水率、残余碱度和耐酸性。粉煤灰粘土基地聚合物具有良好的耐酸性能,且比普通水泥砂浆的减重和抗压强度降低较小。地聚合物砂浆的渗透性比普通水泥砂浆小。地聚合物砂浆的碱度比普通水泥砂浆高4- 20%。粉煤灰粘土基地聚合物比传统水泥混凝土具有优良的抗压强度(红粘土为75.7%,耐火粘土为52.6%),适用于结构应用。
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