喷射混凝土的力学性能经时变化试验研究  

Experimental Study on Time-Varying Mechanical Properties of Sprayed Concrete

作　　者：高庆水 马凯凯 赵峰 范永杰 季宏宇 GAO Qing-shui;MA Kai-kai;ZHAO Feng;FAN Yong-jie;JI Hong-yu(Shandong Transportation Engineering Supervision Consulting Co.,Ltd.,Jinan 250010,China;School of Transportation Civil Engineering,Shandong Jiaotong University,Jinan 250357,China)

机构地区：[1]山东省交通工程监理咨询有限公司,山东济南250010 [2]山东交通学院交通土建工程学院,山东济南250357

出　　处：《中国市政工程》2024年第5期109-113,166,共6页China Municipal Engineering

摘　　要：为研究不同龄期喷射混凝土的力学性能,文章进行了单轴抗压强度试验、劈裂抗拉强度试验和杨氏模量试验,分析了喷射混凝土的力学性能经时变化规律。试验结果表明:喷射混凝土早期强度发展迅速,1 d龄期的单轴抗压强度、劈裂抗拉强度均达到28 d龄期各自强度的50%,杨氏模量达到28 d龄期的60%;单轴抗压强度分别与劈裂抗拉强度、杨氏模量在试验龄期内存在线性关系。To study the mechanical properties of sprayed concrete at different ages,this article has conducted uniaxial compressive strength tests,splitting tensile strength tests and Young's modulus tests,and has analyzed the changes in the mechanical properties of sprayed concrete over time.The experimental results show that the early strength of sprayed concrete develops rapidly,with the uniaxial compressive strength and splitting tensile strength at 1d reaching 50%of the strength at 28d,and the Young's modulus reaching 60%of the strength at 28d.The uniaxial compressive strength is linearly related to the splitting tensile strength and Young's modulus at the test age.

关 键 词：喷射混凝土 单轴抗压强度 劈裂抗拉强度 龄期 经时变化 

分 类 号：TU528.53[建筑科学—建筑技术科学]