江西建材Issue(1)：178-180,3.
冻结砂岩动态力学特性分析
Analysis of Dynamic Mechanical Properties of Frozen Sandstone
摘要
Abstract
In order to consider the dynamic mechanical properties of frozen sandstone under different temperature conditions,this paper sets up six temperature gradient freezes:25,-5,-10,-15,-20,-25℃,and then conducts SHPB series experiments.The experimental results show that the large diameter pores inside the frozen rock sample decrease with the decrease of temperature,while the medium and small diame-ter pores increase with the decrease of temperature;The elastic modulus of frozen sandstone generally increases with the decrease of tempera-ture,and the peak stress increases with the decrease of temperature,showing a significant low-temperature strengthening effect;The peak strain decreases with the decrease of temperature,exhibiting a low-temperature weakening effect.关键词
冻结/温度梯度/SHPB/核磁共振/应力-应变Key words
Freeze/Temperature gradient/SHPB/Nuclear magnetic resonance/Stress-strain分类
建筑与水利引用本文复制引用
李永杨,郝英奇,陈旭东..冻结砂岩动态力学特性分析[J].江西建材,2024,(1):178-180,3.基金项目
安徽省住房城乡建设科学技术计划项目《低温环境对施工缺陷的钢筋套筒浆锚连接件力学性能影响研究》(项目编号:2021-RK01) （项目编号:2021-RK01）
安徽省住房城乡建设科学技术计划项目《合肥地区基桩快速维持荷载法检测技术研究》(项目编号:HYB20230254). （项目编号:HYB20230254）
