玄武岩纤维修复加固综合法修补混凝土结构裂缝的研究

RESEARCH ON BASALT FIBER RESTORATION AND REINFORCEMENT INTEGRATED METHOD FOR CONCRETE STRUCTURE CRACK REPAIR

混凝土裂缝会影响构件的耐久性,严重的裂缝还会影响结构的承载能力,因此,多数情况下需对混凝土裂缝进行修复处理。裂缝修复加固综合法是采用玄武岩纤维水泥砂浆和灌浆法修补混凝土裂缝,同时在梁底粘贴玄武岩纤维布提高构件抗弯承载力。试验表明,该综合修复技术既提高了构件的抗裂度和刚度,增强二次抗开裂能力,又有效提高受弯构件的抗弯承载力,达到综合修复的效果,经济效益优于目前常用修复技术。

Crack may affect the durability of concrete compo^ents, even affecting the load-carrying capacity of structure. Therefore, concrete crack shall be repaired in most cases. Crack restoration and reinforcement integrated method uses basalt fiber cement mortar with grouting Meanwhile, basalt fiber cloth is pasted at beam bottom to improve bending method to repair bearing capacity concrete crack. of components. After experimental study, it is indicated that this integrated technique can not only improve the crack resistance and rigidity of components and increase secondary crack resistance, but also effectively ameliorate the bending bearing capacity of bending components. Favorable repairing effect is obtained and its economic benefit is better than the technique which is commonly used at present.