当前,用于新老混凝土界面粘结的修补材料主要分无机和有机材料两类。无机类有水泥或水泥砂浆,其主要缺点是粘结性差,达不到消除薄弱界面的目的。有机类的粘结强度相对较高,但与混凝土的线膨胀系数相差太大,易变形剥离,且耐久性差、价格高、需干面施工、有毒。 At present, the repair materials used for bonding new and old concrete interfaces are mainly classified into inorganic and organic materials. Inorganic cement or cement mortar, the main drawback is the poor adhesion, not to eliminate the weak interface purposes. The bonding strength of organic class is relatively high, but with the linear expansion coefficient of concrete is too large, easy to deform and peel, and poor durability, high prices, the need to dry noodles construction, toxic.