Recycled glass powder and calcium carbide residue geopolymer to stabilise silty sand soil: Mechanical performances and statistical analysis.

IF 3.4 3区 综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES
Heliyon Pub Date : 2025-01-06 eCollection Date: 2025-01-15 DOI:10.1016/j.heliyon.2025.e41738
Danial Moazami, Meysam Pourabbas Bilondi, Abbas Rahnama, Mojtaba Zaresefat, Laura Moretti
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引用次数: 0

Abstract

Geopolymerization is a soil improvement technique widely used for waste management in recent years. This study explores the potential of geopolymerization for roadbed improvement using waste materials. Recycled glass powder (RGP) and calcium carbide residue (CCR) were investigated as precursors and alkaline activators, respectively, to enhance the properties of silty sand soil. X-ray Fluorescence (XRF) analysis confirmed the presence of silicon dioxide in RGP and calcium oxide in CCR. The California Bearing Ratio (CBR) test evaluated the effectiveness of treatments with varying RGP and CCR contents (2-5%) compared to traditional methods (2.5%lime/2.5%cement + RGP). The influence of RGP/CCR content, soaking conditions, and curing time on the stabilised soil was assessed. The geopolymer derived from RGP and CCR significantly improved the load-bearing capacity compared to untreated soil (unsoaked CBR: 85.5 % vs. 45.0 % at 28 days). Notably, soaked CBR increased fourfold after 28 days with the optimal geopolymer content (28.7 % vs. 7.5 %). Statistical analysis confirmed that stabiliser content and sample conditions significantly impacted strength development. These findings demonstrate the effectiveness of geopolymer cement as a sustainable and strengthening alternative for soil treatment, promoting waste utilisation in infrastructure development.

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来源期刊
Heliyon
Heliyon MULTIDISCIPLINARY SCIENCES-
CiteScore
4.50
自引率
2.50%
发文量
2793
期刊介绍: Heliyon is an all-science, open access journal that is part of the Cell Press family. Any paper reporting scientifically accurate and valuable research, which adheres to accepted ethical and scientific publishing standards, will be considered for publication. Our growing team of dedicated section editors, along with our in-house team, handle your paper and manage the publication process end-to-end, giving your research the editorial support it deserves.
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