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一、前言混凝土是建筑工程的主要结构材料,但由于收缩,使混凝土或混凝土构件、制品常出现裂缝,影响其质量和耐久性。为了克服这个弱点,近年来国内外在混凝土中掺入一定数量的膨胀材料,使其产生微膨胀,与固有的收缩形成补偿,并提高混凝土的密实度,从而达到防渗防漏的目的。
I. INTRODUCTION Concrete is the main structural material of construction projects, but due to shrinkage, cracks often occur in concrete or concrete components and products, affecting their quality and durability. In order to overcome this weakness, in recent years, a certain amount of intumescent material has been incorporated into concrete at home and abroad, causing it to expand slightly, compensating for the inherent shrinkage, and increasing the compactness of the concrete so as to achieve the purpose of seepage prevention and leakage prevention.