Effects of basalt/glass fiber reinforcement on compressive strength of waste glass powder cement-soil

Abstract

To address environmental concerns and promote the sustainable development of building materials, an investigation was conducted on the effects of incorporating waste glass powder (WGP) and varying proportions of basalt fiber and glass fiber on the compressive strength of cement-soil. Unconfined compressive strength tests were performed at different curing ages to analyze the interaction between WGP and fiber types on cement-soil performance. The results demonstrate that while WGP initially reduces the compressive strength of cement-soil, it significantly improves compressive strength when combined with optimal fiber content. In particular, the compressive strength of cement-soil increases within the range of 0%–1.5% basalt fiber content, with the maximum compressive strength achieved at 1.5% basalt fiber content. For glass fiber, the compressive strength of cement-soil initially increases and then decreases with increasing fiber content, with the best performance observed at 2.0% glass fiber content after 28 days of curing. A predictive model that integrates fiber content and curing age was developed to accurately predict the compressive strength of WGP cement-soil, providing a valuable tool for practical engineering applications.