Influence of marine environment on durability and microstructural properties of fly ash-based geopolymer concrete

被引：0

作者：

Gadikota C.R. ^{[1
]}

Chandra D.S. ^{[1
]}

机构：

[1] Department of Civil Engineering, Vignan’s Foundation for Science, Technology and Research, Vadlamudi, Andhra Pradesh, Guntur

来源：

Journal of Building Pathology and Rehabilitation | 2023年 / 8卷 / 2期

关键词：

Durability properties; Fly ash; Geopolymers; GGBS; Microstructural studies;

D O I：

10.1007/s41024-023-00339-6

中图分类号：

学科分类号：

摘要：

Geopolymers are inorganic polymeric materials created by reacting aluminosilicate source material with alkaline solutions. Geopolymers were prepared in this study by combining various proportions of fly ash (FA) and ground granulated blast furnace slag (GGBS). As alkaline activators, a solution of sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) was used. The weight percentages of FA and GGBS are 100% FA and 0% GGBS, 90% FA and 10% GGBS, 80% FA and 20% GGBS, 70% FA and 30% GGBS, and 60% FA and 40% GGBS. The geopolymer samples were cured at ambient temperature for 28 days after that samples were exposed to marine water and portal water for 7, 28, 56 and 90 days. On the other hand, durability studies were carried out to know the resistance of geopolymer samples in aggressive chemical environments. Furthermore, microstructural studies like scanning electron microscopy (SEM) are performed to understand the micro-level analysis of geopolymer samples. The experimental results revealed that the geopolymer samples exhibited enhanced durability properties in both marine and potable water environments. © 2023, The Author(s), under exclusive licence to Springer Nature Switzerland AG.

引用

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