玻化微珠保温混凝土与变形钢筋粘结锚固强度的试验研究.pdfVIP

学兔兔 杆癯建巍粉 中国科技核心期刊 玻化徼珠保温混凝士与变形钢筋 粘结镭固强度的试验研究 马钢，李珠，赵林，张玉 (太原理工大学 建筑与土木工程学院，山西 太原 030024) 摘要：通过拔出试验探讨了变形钢筋与玻化微珠保温混凝土的粘结锚固强度，．并与普通承重混凝土进行了比较。试验结果表 明，玻化微珠保温混凝土和普通承重混凝土一样，破坏依然以劈裂破坏为主；玻化微珠保温混凝土与变形钢筋的粘结锚回强度稍高 于同强度等级的普通承重混凝土；提出了提高玻化微珠保温混凝土与变形钢筋粘结强度的建议 关键词：玻化微珠保温混凝土；变形钢筋；粘结强度；拉拔试验 中图分类号：TU528+2 文献标识码：A 文章编号：1001—702X(2013)叭一0077—03 Experimental research on bond strength of glazed hollow bead insulation concrete and deformed bars MA Gang，LIZhu，ZHA0 Lin，ZHANG Yu (College of Architecture and Civil Engineering，Taiyuan University of Technology，Taiyuan 030024，Shanxi，China) Abstract：Through pullout tests，the bond strength of deformed bars with glazed hollow bead insulation concrete has been ex— plored，and compared with the test results of common load-bearing concrete．The test resuhs show that similar with ordinary load— bearing concrete，the failure mode of glazed hollow bead insulation concrete is still splitting failure；the bond strength of deformed bars with glazed hollow bead insulation concrete is slightly higher than the ordinary load—bearing concrete of the same strength class；According to the resuhs．we reach lhe rec0mmendations to improve the bond strength of deformed bars with glazed hollow bead insulati0n c0ncrete． Key words．．glazed hollow bead insulation concrete；deformed bars；bond strength；pullout tests 协同变形是二者能够充分发挥各自优势的关键。钢筋在混凝 0 引 言 土中的锚固长度也是由二者之间的粘结强度所决定的。因此， 玻化微珠保温混凝土是在混凝土中掺入一定量的玻化 钢筋与混凝土的粘结强度是钢筋与混凝土能够共同受力的关 微珠等绝热材料，兼有一般承重混凝土的力学性 和保温材 键。如果钢筋过早的被拉拔破坏，则对钢筋混凝土构件的抗拉 料的保温隔热性能的新型建筑材料。然而类似于普通混凝 和抗弯能力都