河南城建学院学报2024，Vol.33Issue(2)：7-12,6.DOI:10.14140/j.cnki.hncjxb.2024.02.002
石灰-高炉矿渣改良膨胀土强度特性试验研究
Experimental study on strength characteristics of expanded soil improved by lime-blast furnace slag
摘要
Abstract
Due to the unstable characteristics of expansive soil,such as water absorption and expansion,as well as shrinkage upon water loss,a new type of solidifying agent,blast furnace slag,was used to improve the expan-sive soil in combination with inorganic material lime.The research focused on the free expansion rate,liquid plastic limit,unconfined compressive strength,and shear strength of the improved expansive soil.The study also explored and analyzed the variation of unconfined compressive strength of lime-blast furnace slag(L-BLS)im-proved expansive soil at different curing ages and different dosages of the improvement agent.The results showed that the use of L-BLS to improve the expansive soil significantly increased its early strength.The strength of the improved expansive soil increased with the increase of curing age and dosage of the improvement agent.When 6%lime and 9%blast furnace slag were added,the unconfined compressive strength at the corre-sponding curing age was the highest,and the effective utilization rate of the material was optimal.关键词
改良膨胀土/高炉矿渣/石灰/强度特性/无侧限抗压强度Key words
modified expansive soil/blast furnace slag/lime/strength characteristics/unconfined compressive strength分类
建筑与水利引用本文复制引用
张玉国,王瑞雪,陈峥昊,秦培森,杨畅,杜晓玉..石灰-高炉矿渣改良膨胀土强度特性试验研究[J].河南城建学院学报,2024,33(2):7-12,6.基金项目
国家自然科学基金(U1204511,51509274) （U1204511,51509274）
河南省自然科学基金项目(222300420596) （222300420596）
河南省高等学校重点科研项目(19A560027) （19A560027）
