基于冻融循环的再生粗骨料混凝土力学性能分析  

MECHANICAL PROPERTIES OF THE CONCRETE WITH RECYCLED COARSE AGGREGATE UNDER FREEZE-THAW CYCLES

作　　者：石晶[1] 康永生[1] 李超[1] 李振海[1] SHI Jin;KANG Yongsheng;LI Chao;LI Zhenhai(Heilongjiang Academy of Cold Area Building Research,Harbin 150080,China)

机构地区：[1]黑龙江省寒地建筑科学研究院,哈尔滨150080

出　　处：《低温建筑技术》2022年第5期34-38,共5页Low Temperature Architecture Technology

摘　　要：文中研究了冻融条件下冻融循环次数对再生粗骨料混凝土(RC)和素混凝土(NC)的抗压强度、劈裂抗拉强度的衰减规律。研究结果表明,当冻融循环次数达到150次时,再生混凝土的抗压强度相比于素混凝土低3~5MPa,其劈裂抗拉强度比素混凝土平均低0.38MPa。The influence of cycle numbers on the attenuation law of compressive strength and splitting tensile strength of recycled coarse aggregate concrete(RC)and normal concrete(NC)are studied under freeze-thaw tests.The results show that the compressive strength of RC is 3~5 MPa lower than that of NC,and the splitting tensile strength is 0.38 MPa lower than NC on average when the number of freeze-thaw cycles reaches 150.

关 键 词：冻融循环 再生粗骨料混凝土 力学性能 质量损失率 相对动弹性模量损失率 

分 类 号：TU432[建筑科学—岩土工程]