土木与环境工程学报（中英文）2025，Vol.47Issue(3)：36-40,5.DOI:10.11835/j.issn.2096-6717.2023.022
氧化镁矿粉复配加固砂土的强度特性
Strength characteristics of sand treated by magnesium oxide activated granulated blast furnace
摘要
Abstract
Sandy soil is a common geotechnical material.To satisfy the mechanical and environmental requirements in engineering,the granulated blast furnace powder(GGBS)as a solid waste discharged by steel industry could replace cement as a soil curing agent.In this study,GGBS was used as curing agent and magnesium oxide(MgO)was used as stimulating agent to reinforce the sand.The influence of curing durations(3,7,14,28,56 days)and the mixing amount of curing agents(8%,10%,12%)as well as the amounts of magnesium oxide(0%,5%,10%,15%,20%,40%)on the strength development were analyzed.The results showed that under the same amount of curing agent,the unconfined compressive strength(USC)of cemented sand has no obvious relation with curing age less than 7 days.However,when the curing age was longer than 7 days,the longer the age period,the higher of the sand soil USC.Furthermore,the amount of curing agent is positively correlated with the unlimited compressive strength of sand.Finally,although magnesium oxide dosage could promote the improvement of the unlimited compressive strength,excessive magnesium oxide would inhibit the increase of the unlimited compressive strength in sand.关键词
氧化镁/砂土/无侧限抗压强度/粒化高炉矿粉Key words
magnesium oxide/sandy soil/unconfined compressive strength/granulated blast furnace powder分类
土木建筑引用本文复制引用
陆加越,白坤,张成君,叶强..氧化镁矿粉复配加固砂土的强度特性[J].土木与环境工程学报（中英文）,2025,47(3):36-40,5.基金项目
国家自然科学基金(52108218) National Natural Science Foundation of China(No.52108218) （52108218）
