岩土力学2026，Vol.47Issue(8)：2617-2628,12.DOI:10.16285/j.rsm.2026.00006
粒化高炉矿渣、粉煤灰及废旧轮胎纺织纤维协同固化膨胀土的力学性能与微观机制研究
Synergistic stabilization of expansive soil using ground granulated blast furnace slag,fly ash,and waste tire textile fibers:mechanical properties and micro-mechanisms
摘要
Abstract
The stabilization treatment of expansive soil and the resource utilization of industrial solid waste are two prominent research areas in geotechnical engineering.The utilization of industrial solid waste to solidify expansive soil offers both economic and environmental benefits.This study employs ground granulated blast furnace slag,fly ash,and waste tire textile fibers to synergistically expansive soil.Through swelling strain tests,unconfined compressive strength tests,California bearing ratio tests,X-ray diffraction analysis,and scanning electron microscopy analysis,the systematic investigation was conducted on the effects of binder dosage,ground granulated blast furnace slag/fly ash ratio,and waste tire textile fiber content on the performance of expansive soil.The results show that when the binder dosage is 15%,the ground granulated blast furnace slag/fly ash ratio is 8:2,and the waste tire textile fiber content is 0.7%,the proposed solidified expansive soil achieves optimal mechanical properties.Compared to untreated expansive soil,the unconfined compressive strength at curing ages of 7,14,and 28 days increases by more than fivefold.The California bearing ratio of the stabilized soil reaches a maximum value of 25.22%,representing a substantial improvement over the untreated expansive soil,with a California bearing ratio of only 3.16%.X-ray diffraction and scanning electron microscopy analyses confirmed the reinforcing effects of the binder and waste tire textile fibers in the stabilized soil.The proposed method for stabilizing expansive soil not only enhances its engineering performance but also facilitates the resource utilization of waste tire textile fibers—a type of solid waste with extremely low utilization rates—thereby demonstrating substantial potential for widespread adoption and application.关键词
加筋/固化/加州承载比/工业固废/膨胀土/力学性能Key words
reinforcement/stabilization/California bearing ratio(CBR)/industrial solid waste/expansive soil/mechanical properties分类
建筑与水利引用本文复制引用
谢明星,贾良天,孙涵,崔岚,解晓伟,郑俊杰..粒化高炉矿渣、粉煤灰及废旧轮胎纺织纤维协同固化膨胀土的力学性能与微观机制研究[J].岩土力学,2026,47(8):2617-2628,12.基金项目
国家自然科学基金(No.52378359) （No.52378359）
山西省基础研究计划(产业发展类)联合资助项目(No.202403011222003).This work was supported by the National Natural Science Foundation of China(52378359)and the Shanxi Basic Research Program Joint Funding Project(Jiaokong)(202403011222003). （产业发展类）
