摘要
为了研究水泥稳定土的干缩性能及其尺寸效应,结合蒙城某水利枢纽工程,采用工程现场的两种黏土进行了水泥稳定土室内干缩性能试验,测试了不同水泥用量、不同养护期水泥稳定土试件的干缩率,并对比了试件尺寸对测试结果的影响。试验结果表明:水泥稳定土的干缩率随龄期延长而增大,14 d后趋于稳定;随着水泥用量的增加,试件干缩率降低;养护期延长对于降低水泥稳定土干缩有利,但效果有限;各龄期试件干缩率与质量损失率正相关;试件大小对干缩率影响很小,尺寸效应不显著。
To study the dry shrinkage of cement stabilized soil(CSS) and its size effect, two types of clay from the engineering field of a key water-control project in Mengcheng were tested for indoor dry shrinkage performance. The shrinkage of CSS of different cement content and under various curing time was measured and the size effect on shrinkage was compared. The results show that, the shrinkage of CSS increases with extension of drying time, and tends to be stable after 14 days. As the content of cement increases, dry shrinkage decreases. The extension of curing time is beneficial to dry shrinkage performance with limited effects. There is a positive correlation between dry shrinkage and mass loss rate. The size of specimen has little effect on dry shrinkage with non-significant size effect.
作者
陈杰
朱学英
付梁
王珩
CHEN Jie;ZHU Xueying;FU Liang;WANG Heng(Water Resources Bureau of Mengcheng County,Mengcheng 233500,China;China Water Resources Beifang Investigation,Design and Research Co.,Ltd.,Tianjin 300222,China;Materials&Structural Engineering Department,Nanjing Hydraulic Research Institute,Nanjing 210024,China)
出处
《水利水电科技进展》
CSCD
北大核心
2022年第2期114-118,共5页
Advances in Science and Technology of Water Resources
基金
中央级公益性科研院所基本科研业务费专项(Y420012,Y421009)。
关键词
水泥稳定土
干缩性能
无侧限抗压强度
质量损失
尺寸效应
cement stabilized soil
dry shrinkage performance
unconfined compressive strength
mass loss
size effect
作者简介
陈杰(1971-),男,高级工程师,主要从事水利水运建设管理工作。E-mail:1183367025@qq.com;通信作者:王珩(1979-),男,正高级工程师,硕士,主要从事水工材料等研究。E-mail:wangheng@nhri.cn。
