玻璃钢/复合材料Issue(4)：11-14,4.
氯盐干湿循环作用下嵌入式CFRP筋与混凝土界面粘结性能研究
EXPERIMENTAL STUDY ON BOND PERFORMANCE OF NSM CFRP BARS WITH CONCRETE UNDER CHLORIDE SOLUTION WET-DRY CYCLING ENVIRONMENT
摘要
Abstract
In the island construction,the seawater dry-wet cycling under tidal action is one of the main factors affecting performance of NSM (near-surface-mounted) FRP (fiber-reinforced polymer) strengthened concrete structures.Thus,the present study is aimed at the durability of NSM CFRP bars reinforced concrete with two types of bonding materials,i.e.,high performance fiber-reinforced cementitious materials (HPFRC) and epoxy resin,by pull-out test of CFRP bars from concrete blocks under the simulated seawater dry-wet cycling condition.The failure modes and load carrying capacity are then analyzed.The results show that the strengthening performance of the specimens with epoxy decreases slightly.But the strengthening performance of specimens with HPFRC increases steadily in the wet-dry cycles of 90 days,and the load carrying capacity can be improved to 70.30％ of that for specimens with epoxy resin.Therefore,HPFRC can be used as bonding materials in NSM FRP reinforced marine concrete structures under tidal environment.关键词
潮汐作用/耐久性/FRP筋/高性能纤维增强水泥基复合材料/嵌入式加固/粘结性能Key words
tidal action/durability/FRP bars/high performance fiber-reinforced cementitious materials (HPFRC)/NSM strengthening/bond performance引用本文复制引用
巩家宗,杨树桐,刘洋..氯盐干湿循环作用下嵌入式CFRP筋与混凝土界面粘结性能研究[J].玻璃钢/复合材料,2018,(4):11-14,4.基金项目
国家自然科学基金项目(51378481) （51378481）
