Post-fire behavior of geopolymer concrete with sodium silicate waste as an alternative to conventional river sand

IF 0.9 Q4 CONSTRUCTION & BUILDING TECHNOLOGY
B. Kanagaraj, N. Anand, J. Alengaram, Diana Andrushia
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Abstract

Purpose The present work focuses on evaluating the physical and mechanical characteristics of geopolymer concrete (GPC) by replacing the sodium silicate waste (SSW) in place of traditional river sand. The aim is to create eco-friendly concrete that mitigates the depletion of conventional river sand and conserves natural resources. Additionally, the study seeks to explore how the moisture content of filler materials affects the performance of GPC.Design/methodology/approach SSW obtained from the sodium silicate industry was used as filler material in the production of GPC, which was cured at ambient temperature. Instead of the typical conventional river sand, SSW was substituted at 25 and 50% of its weight. Three distinct moisture conditions were applied to both river sand and SSW. These conditions were classified as oven dry (OD), air dry (AD) and saturated surface dry (SSD).Findings As the proportion of SSW increased, there was a decrease in the slump of the GPC. The setting time was significantly affected by the higher percentage of SSW. The presence of angular-shaped SSW particles notably improved the compressive strength of GPC when replacing a portion of the river sand with SSW. When exposed to elevated temperatures, the performance of the GPC with SSW exhibited similar behavior to that of the mix containing conventional river sand, but it demonstrated a lower residual strength following exposure to elevated temperatures.Originality/value Exploring the possible utilization of SSW as a substitute for river sand in GPC, and its effects on the performance of the proposed mix. Analyzing, how varying moisture conditions affect the performance of GPC containing SSW. Evaluating the response of the GPC with SSW exposed to elevated temperatures in contrast to conventional river sand.
用硅酸钠废料替代传统河砂的土工聚合物混凝土的火灾后行为
目的研究水玻璃废弃物(SSW)代替传统河砂对地聚合物混凝土(GPC)物理力学性能的影响。其目的是创造环保混凝土,减轻传统河砂的枯竭,保护自然资源。此外,该研究旨在探索填充材料的含水率如何影响GPC的性能。从硅酸钠工业中获得的SSW作为填充材料用于GPC的生产,并在室温下固化。代替典型的传统河砂,SSW取代了其重量的25%和50%。三种不同的湿度条件分别应用于河砂和SSW。这些条件分为烘箱干燥(OD)、空气干燥(AD)和饱和表面干燥(SSD)。结果随着SSW比例的增加,GPC的暴跌幅度减小。较高的SSW含量对凝结时间有显著影响。当用SSW代替部分河砂时,角状SSW颗粒的存在显著提高了GPC的抗压强度。当暴露在高温下时,含有SSW的GPC表现出与含有常规河砂的混合物相似的性能,但暴露在高温下的残余强度较低。探索在GPC中使用SSW作为河砂替代品的可能性,以及其对拟议混合物性能的影响。分析了不同湿度条件对含SSW GPC性能的影响。与常规河砂相比,评估SSW与GPC在高温下的响应。
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来源期刊
Journal of Structural Fire Engineering
Journal of Structural Fire Engineering CONSTRUCTION & BUILDING TECHNOLOGY-
CiteScore
2.20
自引率
10.00%
发文量
28
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