碱性环境下GFRP/BFRP水泥复合板与混凝土界面的粘结性能研究  

Study on Interfacial Bond Behavior between BFRP/GFRP Composite Cement Plate and Concrete under Alkaline Environment

作　　者：王自新[1] 宋小软[2] 闫朝[2] 

机构地区：[1]中水珠江规划勘测设计有限公司,广东广州510610 [2]北方工业大学土木工程学院,北京100144

出　　处：《广东水利水电》2016年第11期30-35,共6页Guangdong Water Resources and Hydropower

基　　金：国家自然科学基金资助(编号:51208006)

摘　　要：设计了GFRP增强水泥板/混凝土、BFRP增强水泥板/混凝土两类复合试件,研究碱性环境对两类复合试件界面粘结性能的劣化影响。分别把两类复合试件在5%Na OH溶液中浸泡7 d、15 d、35 d、70 d后进行推出试验,通过对其界面剪切粘结应力、相对滑移及界面应变的测试和分析,得出了碱性环境下两类复合试件的界面粘结性能衰减规律,并对两类纤维复合试件在碱性环境中的劣化性能进行了对比分析。试验表明在碱性侵蚀15 d内,GFRP类复合试件和BFRP类复合试件的各项界面性能指标均急剧衰减,其中BFRP类复合试件的界面性能劣化程度更为严重。In order to study the influence of alkaline environment on the interface of FPR reinforced cement slab and concrete, two types of composite specimens are designed, which are the GFRP reinforced cement slab / concrete and the BFRP reinforced cement slab/ concrete. All composite specimens are immersed in 5% NaOH solution for 7 days, 15 days, 35 days and 70 days respectively. With the help of the push - out tests, it can be summarized the interracial shear strength, relative slip and interfacial strain. Through analysis, the attenuation relationships of the interfacial bond properties are obtained, and the deterioration characteristics of the two kinds of fiber composite specimens are compared and analyzed. The tests indicate that all interracial properties of these two types of fiber composite specimens are under abrupt degradation. The BFRP reinforced cement slab / concrete has worse degradation performance than the other.

关 键 词：碱性环境 GFRP BFRP 水泥复合板 界面粘性能 

分 类 号：TU502[建筑科学—建筑技术科学]