摘要
为探究硫酸盐侵蚀对全轻陶粒混凝土(full lightweight ceramsite concrete,FLWCC)与普通混凝土(normal concrete,NC)界面黏结强度的影响,文章对96块FLWCC-NC复合试样进行了硫酸盐干湿循环试验,并对不同循环次数下的试样进行了劈裂抗拉试验和直剪试验。结果显示,在硫酸盐侵蚀过程中,其界面的破坏模式会发生转变,界面劈裂抗拉强度和直剪强度会先轻微增加后大幅度下降,直剪强度与劈裂抗拉强度之比会下降。
In order to explore the influence of sulfate corrode on the bond strength of the interface between full lightweight ceramsite concrete(FLWCC)and normal concrete(NC),96 FLWCC-NC composite specimens were subjected to sulfate dry-wet cycle test,and the splitting tensile test and direct shear test were carried out on the specimens under different cycles.The results show that in the process of sulfate corrode,the failure mode of the interface will change,the splitting tensile strength and direct shear strength of the interface will increase slightly first and then decrease greatly, and the ratio of direct shear strength to splitting tensile strength will decrease.
作者
张尧
陈经毅
朱红兵
付正昊
ZHANG Yao;CHEN Jingyi;ZHU Hongbing;FU Zhenghao(China Railway 11th Bureau Group Fourth Engineering Co.,Ltd.,Wuhan 441300,Hubei,China;China Design Group Co.,Ltd.,Nanjing 210001,Jiangsu,China;School of Urban Construction,Wuhan University of Science and Technology,Wuhan 430065,Hubei,China)
出处
《工程技术研究》
2024年第24期4-7,共4页
Engineering and Technological Research
关键词
全轻陶粒混凝土
新旧混凝土界面
硫酸盐侵蚀
干湿循环
劈裂抗拉强度
直剪强度
full lightweight ceramsite concrete
new and old concrete interface
sulfate corrode
dry-wet cycle
splitting tensile strength
direct shear strength
