东南大学学报（自然科学版）2026，Vol.56Issue(10)：1447-1454,8.DOI:10.3969/j.issn.1001-0505.2026.10.009
基于胶空比的水泥基材料固化土强度预测模型
Strength prediction model of cement-based material stabilized soil based on gel/space ratio
摘要
Abstract
The influence of cement content and soil properties on the strength of cement-stabilized soil(CSS)has been widely studied.However,the underlying mechanism between the pore-filling effect of hydration products and strength development remains insufficiently investigated.This study introduced the gel/space ra-tio(GSR)as a novel parameter to quantify the efficacy of hydration products in filling the pores of CSS and developed a strength prediction model based on GSR.The effects of initial porosity,cement-based material dosage,hydration degree,and volume expansibility on GSR were quantified through thermogravimetric analy-sis and specific gravity measurements.Meanwhile,unconfined compressive strength(UCS)tests were per-formed on CSS specimens with different curing ages,initial porosities,and cement-based material dosages,thereby validating the effectiveness of the prediction model.The results show that GSR exhibits a positive lin-ear correlation with cement-based material dosage,hydration degree,and volume expansibility,and a nega-tive linear correlation with initial porosity.An exponential relationship was identified between GSR and UCS.The proposed single-parameter strength prediction model based on GSR shows a maximum error of 14.44%and an average error of 5.41%,demonstrating that GSR can serve as a key indicator for evaluating CSS strength and has good potential for application in CSS strength design.关键词
水泥基材料/孔隙充填/水化程度/胶空比/强度预测Key words
cement-based material/pore filling/hydration degree/gel/space ratio/strength prediction分类
建筑与水利引用本文复制引用
薛传荣,丁建文,焦宁,张赛,杨铮涛..基于胶空比的水泥基材料固化土强度预测模型[J].东南大学学报（自然科学版）,2026,56(10):1447-1454,8.基金项目
国家自然科学基金资助项目(52378330). （52378330）
