冻融循环对烧结页岩多孔砖砌体抗剪性能的影响  

Effect of Freeze-thaw Cycle on Shear Performance of Sintered Shale PorousBrick Masonry

作　　者：王锐 黄榜彪[1] 莫济成[2] 李青[1] 朱基珍[2] WANG Rui;HUANG Bangbiao;MO Jicheng;LI Qing;ZHU Jizhen(School of Civil Engineering and Architecture,Guangxi University of Science and Technology,Liuzhou 545006,China;School of Science,Guangxi University of Science and Technology,Liuzhou 545006,China)

机构地区：[1]广西科技大学土木建筑工程学院,柳州545006 [2]广西科技大学理学院,柳州545006

出　　处：《材料导报》2020年第S01期258-260,共3页Materials Reports

基　　金：广西重点研发计划(桂科AB16380341,AB17129024);柳州市科技重大专项(2018AD40501)。

摘　　要：为了研究烧结页岩多孔砖砌体结构在冻融循环下抗剪强度的变化规律,采用砌体沿通缝截面抗剪强度的试验方法,通过对比分析不同冻融循环次数下砂浆与砌体的强度衰减和损失情况,得到了冻融循环下烧结页岩多孔砖砌体的抗剪强度衰减规律及表达式。试验结果表明,在75次冻融循环后,冻融破坏对砌体抗剪性能的影响较大且不断加深,砌体抗剪性能急剧下降。In order to explore the shear strength variation of sintered shale porous brick masonry structure under freeze-thaw cycles,this paper adopted the test method of masonry shear strength along the cross-section.By comparing and analyzing the strength attenuation and loss of mortar and masonry under different freeze-thaw cycles,the law and expression of shear strength attenuation of sintered shale porous brick masonry under freeze-thaw cycles were obtained.The test results show that after 75 freeze-thaw cycles,the effect of freeze-thaw damage on the shear resis-tance of masonry is greater and deeper,and the shear resistance of masonry decreases sharply.

关 键 词：砌体结构 冻融循环 耐久性 抗剪强度 

分 类 号：TU502[建筑科学—建筑技术科学]