基于无侧限抗压强度试验的不同养护环境对水泥土强度影响研究  

Study on the Effect of Various Curing Environment on the Strength of Cemented Soil Based on Unconfined Compressive StrengthTests

作　　者：陈圣甜 梁文广[1] 闫宏锦 张彦忠 张鹏 赵志杰 Chen Shengtian;Liang Wenguang;Yan Hongjin;Zhang Yanzhong;Zhang Peng;Zhao Zhijie(Beijing Municipal 3rd Construction Engineering Co.,Ltd.,Beijing 100010,China;Beijing Municipal Construction Group Co.,Ltd.,Beijing 100089,China)

机构地区：[1]北京市市政三建设工程有限责任公司,北京100010 [2]北京市政建设集团有限责任公司,北京100089

出　　处：《市政技术》2024年第2期40-44,共5页Journal of Municipal Technology

基　　金：深厚淤泥层桥梁桩基施工技术研究(2021042J)。

摘　　要：以福建省宁德市连城路(疏港路-学院路段)道路工程项目为依托,采用无侧限抗压强度试验系统研究了不同养护条件、不同水泥掺量、不同养护龄期对水泥土强度的影响。结果表明:当水泥掺量和养护龄期均相同时,试验箱中水泥土的无侧限抗压强度均小于标养箱;在同一水泥掺量下,试验箱和标养箱中水泥土的无侧限抗压强度均与养护龄期成正相关,即随着养护龄期的增加而增长,但其强度增长幅度随着养护龄期的增加逐渐降低;同一养护龄期下,不同养护条件下水泥土的无侧限抗压强度均随着水泥掺量的增加而增长,且试验箱和标养箱中试样的强度差值随着水泥掺量的增加逐渐加快。Based on the road engineering project of Liancheng Road(section from Shugang Road to Xueyuan Road)in Ningde City,Fujian Province,an unconfined compressive strength test system was used to study the effects of different curing condition,cement dosages and curing ages on the strength of cemented soil.The results show that when the cement content and curing age are the same,the unconfined compressive strength of cemented soil in the test box is lower than that in the standard curing box;With the same cement content,both the unconfined compressive strength of cemented soil in the two boxes are positively correlated with the curing age,that is,it increases with the increase of curing age,but its strength growth rate gradually decreases with the increase of curing age;Under the same curing age and different curing conditions,the unconfined compressive strength of cemented soil increases with the increase of cement content,and the difference in strength between the specimens in the test box and the standard curing box gradually accelerates with the increase of cement content.

关 键 词：水泥土强度 无侧限抗压强度试验 养护条件 水泥掺量 养护龄期 

分 类 号：TU411.6[建筑科学—岩土工程]