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在混凝土、砂浆或净浆的制备过程中,掺入不超过水泥用量5%(特殊情况除外),能对混凝土、砂浆或净浆的正常性能要求而改性的一种产品,称为混凝土外加剂。外加剂按其所对于应的功能不同分为减水剂、引气剂、僧水剂、促凝剂、早强剂、缓凝剂、发气剂、气泡剂、灌浆剂、着色剂、超塑化剂、保水剂、粘结剂、阻锈剂,喷射混凝土外加剂等。下面就混凝土外加剂使用中应注意的几个问题进行了探讨。
In concrete, mortar or paste preparation, the incorporation of not more than 5% of cement (except in special cases), concrete, mortar or paste to the normal performance requirements of a modified product called concrete plus Agent. Additions according to their different functions should be divided into superplasticizer, air entraining agent, monk water agent, coagulant, early strength agent, retarder, gas agent, bubble agent, grouting agent, colorant, super Plasticizers, water retention agents, adhesives, rust inhibitors, spray concrete admixtures. Here are some questions that should be noticed in the use of concrete admixtures.