水泥改良BRAC混填料无侧限抗压强度试验
Unconfined Compressive Strength Test of Cement-modified BRAC Mixed Fillers
陈水满 1郑国栋 2朱德良 2许震 1魏太兵2
作者信息
- 1. 南平市公路事业发展中心,福建 南平 354300
- 2. 武夷学院 土木工程与建筑学院,福建 南平 354300
- 折叠
摘要
建筑再生骨料与黏土混填料按最优含水率闷料 24 h后,再向其中掺入适量固化剂,按最大干密度和压实度要求制备强度试件,并进行无侧限抗压强度试验,以考察建筑再生骨料含量、水泥掺量及不同养护龄期对压实力学特性与抗压强度的影响.试验结果表明,随着建筑再生骨料含量、水泥掺量、养护龄期的增加,混填料无侧限抗压强度增加,早期呈塑性破坏,养护后期呈脆性破坏,黏聚力和内摩擦角随再生骨料含量、水泥掺量和养护龄期的增加而增大,材料的抗压强度和水稳定性显著提高.
Abstract
The strength specimens were prepared by adding appropriate curing agent to the mixture of building recycled aggregate and clay mixed filler(referred to as BRAC mixed filler)according to the requirements of maximum dry density and compactness.The unconfined compressive strength test was carried out to investigate the effects of recycled aggregate,cement content and different curing ages on the mechanical properties and compressive strength.The results show that with the increase of recycled aggregate,cement content and curing time,the unconfined compressive strength of mixed fillers increases,and the mixed fillers show plastic failure at early stage and brittle failure at late curing stage.The cohesion and internal friction angle increase with the increase of recycled aggregate,cement content and age,which significantly im-prove the compressive strength and water stability of the material.
关键词
水泥改良/击实特性/无侧限抗压强度Key words
BRAC mixed fillers/cement improvement/compaction characteristics/unconfined compressive strength引用本文复制引用
基金项目
福建省交通运输科技项目(202231)
南平市资源产业科技创新联合资助项目(N2020Z003)
福建省大学生创新创业训练计划项目(S202310397057)
出版年
2024
NETL
NSTL
万方数据