BFRP筋与纤维陶粒混凝土黏结性能试验  

Experimental study on the bond properities between BFRP bars and fiber ceramsite concrete

作　　者：刘艳[1,2] 黄洋洋 邓芃 黄一杰[1,2] 代其磊 LIU Yan;HUANG Yangyang;DENG Peng;HUANG Yijie;DAI Qilei(Shandong Provincial Key Laboratory of Civil Engineering Disaster Prevention and Mitigation, Shandong University of Science and Technology, Qingdao, Shandong 266590, China;College of Civil Engineering and Architecture, Shandong University of Science and Technology, Qingdao, Shandong 266590, China)

机构地区：[1]山东科技大学山东省土木工程防灾减灾重点实验室,山东青岛266590 [2]山东科技大学土木工程与建筑学院,山东青岛266590

出　　处：《中国科技论文》2021年第4期408-414,共7页China Sciencepaper

基　　金：国家自然科学基金资助项目(51978389)。

摘　　要：为研究玄武岩纤维增强复合材料(basalt fiber reinforced polymer,BFRP)筋与纤维陶粒混凝土的黏结性能,对不同混凝土强度、BFRP筋直径、锚固长度、温度及陶粒类别共计72个试件进行了中心拉拔试验。试验结果表明:BFRP筋与纤维陶粒混凝土试件的破坏模式以拨出破坏为主,劈裂破坏为辅;试件的黏结强度随混凝土强度等级增加而提高,随BFRP筋直径和锚固长度增加而降低,掺入适量纤维可提高BFRP筋的黏结强度,提高幅值约为8.36%;黏结强度随温度升高而降低,且纤维陶粒混凝土与BFRP筋耐高温性较好。通过分析试验数据提出BFRP筋与纤维陶粒混凝土黏结强度计算公式,计算值与实测值吻合良好,可为BFRP筋与纤维陶粒混凝土应用于实际工程提供参考。In order to study the bond properties of basalt fiber reinforced polymer(BFRP)bar and fiber ceramsite concrete,pull-out tests were carried out for a total of 72 speciments with different concrete strength,BFRP bar diameter,anchorage length,temperature and ceramsite type.The test results show that the failure of the speciments is mainly pull-out mode,supplemented by splitting mode.The bond strength of specimens increases with the increase of concrete strength grade,but decreases with the increase of diameter and anchorage length of BFRP bars.The bond strength of BFRP bars are improved by 8.36%when adding appropriate amount of fiber.The bond strength of the specimens decreases with the increase of temperature,and the high temperature resistance of the fiber ceramsite concrete and BFRP reinforcement is better.By the analysis of the test date,an analytical formula for calculating the bond strength of fiber ceramsite concrete is established,and the calculated values are in line with the real ones,which can be used in the practical engineering.

关 键 词：纤维陶粒混凝土 BFRP筋 拉拔试验 黏结强度 破坏模式 

分 类 号：TU528.2[建筑科学—建筑技术科学]