Experimental investigation on fresh and hardened geopolymer concrete by considering various mix design parameters

Q2 Engineering Asian Journal of Civil Engineering Pub Date : 2025-03-17 DOI:10.1007/s42107-024-01259-7

Smita Patil, Deepa A. Joshi

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Abstract

Fly ash and ground granulated blast furnace slag (GGBS) were mixed with each other at different percentages and various solution-to-binder ratios were used to form the geopolymer concrete (GPC). Sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) make up the alkaline solution, which is used to activate aluminosilicates. NaOH of 8M and 10M concentration was used for experimental work. Different solution-to-binder ratios from 0.4 to 0.45 were studied in this research work. Na2SiO3/NaOH ratio is considered lower for experimental work to achieve economical concrete without compromising mechanical properties. Ambient curing and temperature-maintained curing were used in this research work for curing of GPC specimens. The slump cone test and compressive strength test were carried out on the GPC to analyse the results of workability and strength by varying the mix design parameters of GPC. Experimental results show that changes in solution-to-binder ratio, concentration of NaOH, type of curing, proportion of raw material, and properties of raw materials also affect the fresh and hardened properties of GPC.

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考虑各种混合设计参数的新拌和硬化土工聚合物混凝土实验研究

将粉煤灰与矿渣粉按不同比例混合，采用不同的液胶比制备地聚合物混凝土（GPC）。氢氧化钠（NaOH）和硅酸钠（Na2SiO3）组成碱性溶液，用于活化铝硅酸盐。实验工作采用浓度为8M和10M的NaOH。研究了0.4 ~ 0.45不同的液胶比。Na2SiO3/NaOH的比例被认为是较低的实验工作，以获得经济的混凝土而不影响力学性能。本研究采用环境养护和恒温养护两种方法对GPC试件进行养护。对GPC进行了坍落锥试验和抗压强度试验，分析了不同GPC配合比设计参数对工作性和强度的影响。实验结果表明，液胶比、NaOH浓度、固化方式、原料配比、原料性能等因素的变化都会影响GPC的新鲜性能和硬化性能。

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来源期刊

Asian Journal of Civil Engineering Engineering-Civil and Structural Engineering

CiteScore

2.70

自引率

0.00%

发文量

121

期刊介绍： The Asian Journal of Civil Engineering (Building and Housing) welcomes articles and research contributions on topics such as:- Structural analysis and design - Earthquake and structural engineering - New building materials and concrete technology - Sustainable building and energy conservation - Housing and planning - Construction management - Optimal design of structuresPlease note that the journal will not accept papers in the area of hydraulic or geotechnical engineering, traffic/transportation or road making engineering, and on materials relevant to non-structural buildings, e.g. materials for road making and asphalt. Although the journal will publish authoritative papers on theoretical and experimental research works and advanced applications, it may also feature, when appropriate: a) tutorial survey type papers reviewing some fields of civil engineering; b) short communications and research notes; c) book reviews and conference announcements.