CFRP加固混凝土梁防火保护构造方法试验研究

摘要

在对采取防火保护的CFRP加固混凝土构件的耐火试验研究时,发现高温下附着在构件表面的防火保护材料有整体或局部脱落现象.因此,在实际工程中必须采取适当的构造措施防止防火材料在受火过程中脱落.分别对采取厚型防火涂料、超薄型防火涂料、防火板和普通水泥砂浆作防火保护材料的CFRP加固混凝土梁设计了相应的防止脱落的构造措施,并通过耐火试验验证了不同构造措施的可行性.%In the fire tests of CFRP-strengthened concrete structure with various fireproof coating, it was found that the fireproof coating is apt to peel off. Experiments were performed in this paper to study the construction measures against these types of failures. Different fireproofing materials, including thick fire coating, ultra-thin fire coating, inorganic non-combustible composite board, and normal cement mortar were considered in the testing.