BFRP筋与玄武岩纤维再生混凝土黏结性能试验研究  

Experimental research on bond properties between BFRP bars and basalt fiber recycled concrete

作　　者：刘华新[1] 邢宪才[1] 孟文静[1] 

机构地区：[1]辽宁工业大学土木建筑工程学院,辽宁锦州121000

出　　处：《混凝土》2015年第12期93-96,共4页Concrete

基　　金：辽宁省自然科学基金(2015020208);辽宁省高等学校优秀人才支持计划(LR2012020)

摘　　要：为了研究BFRP筋与玄武岩纤维再生混凝土的黏结性能,选用直径16 mm的BFRP筋埋入纤维再生混凝土中进行中心拉拔试验,研究玄武岩短切纱体积掺量、长度以及再生混凝土强度等级对其影响。试验结果表明:0.2%的纤维体积掺量对黏结强度增强效果最好,纤维长度对黏结强度影响较小,再生混凝土强度等级的提高对黏结强度有增强作用但程度有限;掺入玄武岩短切纱后可以明显改善混凝土的脆性性能,合理控制纤维掺量可以有效地增强BFRP筋与再生混凝土的黏结强度。To study the bond properties between （basalt fiber reinforced polymer, BFRP） bar and basalt fiber recycled concrete, the pull - out tests for the diameter 16mm BFRP bars embedded in basalt fiber recycled concrete were completed.By changing the basalt fiber volume content and fiber length and recycled concrete grade, the bond strength between the BFRP bar and the basalt fiber recycled con- crete were studied. The test results indicate that 0.2% fiber volume content has the best enhance effect for the bond strength, bond strength has been less effected by changing the fiber length, the bond strength enhances with the concrete grade increase, but the increase is not unlimited.The addition of basalt fibers can obviously improve the brittle property of concrete.While the volume content was con- trolled reasonably, the bond strength between BFRP bars and fiber recycled concrete can be enhanced.

关 键 词：BFRP筋 再生粗骨料 玄武岩短切纱 拉拔试验 黏结强度 

分 类 号：TU528.041[建筑科学—建筑技术科学]