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钢筋混凝土柱在现场浇筑时,由于其入模口小、竖向深度大、钢筋密,容易发生蜂窝、麻面、露筋等现象;而且,为了便于浇筑,混凝土拌合物常选用较大的坍落度,石子粒径较小,容易造成强度不足;预制工业厂房柱子,由于长度较大,在运输和吊装中难免会受到碰撞,产生裂缝等缺陷;有时砖柱、壁柱由于荷载的改变也需要加强;因此,对柱子的加固补强会经常遇到。
Reinforced concrete columns pouring in the field, due to its small inlet, vertical depth, dense steel, prone to honeycomb, Ma face, tendons and other phenomena; and, in order to facilitate the pouring, concrete mix often choose a larger Slump, small size of stone, easily lead to lack of strength; prefabricated industrial plant columns, due to the larger length, in the transport and lifting will inevitably be collisions, resulting in cracks and other defects; sometimes brick columns, pilasters due to changes in load Also need to be strengthened; therefore, reinforcement of columns will often encounter reinforcement.