BFRP复合水泥板与PUR保温板界面黏结性能研究  

Interfacial Bonding Performance of BFRP Composite Cement Board and PUR Insulation Board

作　　者：宋小软 黄崧 高睿 骆诗丽 高怡静 SONG Xiaoruan;HUANG Song;GAO Rui;LUO Shili;GAO Yijing(School of Civil Engineering,North China University of Technology,Beijing 100144,China;Futian District Housing&Construction Bureau,Shenzhen 518038,China)

机构地区：[1]北方工业大学土木工程学院,北京100144 [2]深圳市福田区住房和建设局,深圳518038

出　　处：《硅酸盐通报》2023年第12期4323-4331,4350,共10页Bulletin of the Chinese Ceramic Society

基　　金：北方工业大学毓优团队培养计划项目(107051360021XN083)。

摘　　要：随着“双碳”目标的提出,各类新型复合保温模板及一体化复合墙体已成为当前研究热点。本文提出了一种以硬质聚氨酯(PUR)保温板为保温层,玄武岩纤维增强材料(BFRP)复合水泥板为面层的复合保温模板,通过设计的6组试件进行推出剪切试验,研究保温板上开槽类型、深度及数量等因素对面层与保温层界面黏结性能的影响,并引入耗能因子来评价试件耗能能力。结果表明:在保温板上开槽、加深开槽深度、增加开槽数量都可以提升试件的界面黏结强度和韧性。综合对比各工况,在PUR保温板表面开槽可以明显提升试件的界面黏结性能,开横槽试件的界面黏结性能优于开纵槽试件,开井字槽试件表现出最好的界面黏结性能,可使试件界面黏结强度、韧性、耗能能力较不开槽试件分别提升了163%、260%、28.57%,加深开槽深度对于界面黏结性能提升有限,对耗能能力基本没有影响;与开1条横槽相比,开2条横槽可使试件界面黏结性能提升约16%。通过回归分析,建立了界面黏结强度计算公式,与试验结果对比发现计算值与试验值吻合良好。With the proposal of"dual carbon"goal,all kinds of new composite thermal insulation formwork and integrated composite wall have become the current research hotspot.A composite thermal insulation formwork with rigid polyurethane(PUR)insulation board as insulation layer and basalt fiber reinforced polymer(BFRP)composite cement board as surface layer was proposed.Six sets of specimens were designed for push-out shear test.The effects of groove type,depth and number on the interfacial bonding performance between surface layer and insulation layer were studied.The energy dissipation factor was introduced to evaluate the energy dissipation capacity of specimens.The results show that grooving on the insulation board,deepening the grooving depth and increasing the number of grooving can improve the interfacial bonding strength and toughness of the specimen.Comprehensive comparison of various working conditions,grooving on the surface of PUR insulation board can significantly improve the interfacial bonding performance of the specimen.The interfacial bonding performance of the transverse groove specimen is better than that of the longitudinal groove specimen.The"#"-shaped groove specimen makes that the interfacial bonding strength,toughness and energy dissipation capacity of specimen increase by 164%,286%and 28.57%,respectively,compared with the unslotted specimen,showing the best interfacial bonding performance.Deepening the grooveing depth has limited improvement on the interfacial bonding performance and has little effect on the energy dissipation capacity.Increasing the number of grooving can improve the interfacial bonding performance of specimen by about 16%.Through regression analysis,the calculation formula of interfacial bonding strength was established,and compared with the experimental results,the calculated values are in good agreement with the experimental values.

关 键 词：复合保温模板 BFRP 复合水泥板 PUR 界面黏结性能 耗能分析 

分 类 号：TU528.58[建筑科学—建筑技术科学]