混凝土外加剂在施工中选用及质量控制

The selection and quality control of concrete admixtures in construction

混凝土外加剂主要是根据施工技术需求改进混凝土(包括砂浆、净浆)某些性能的精细化工产品,同时也被称作是混凝土中除砂、石、水和水泥之外的第五组分材料,随着混凝土技术的发展,混凝土外加剂的应用越来越广,也越来越重要。然而,外加剂品种众多,性能也各不一致,针对这些问题,本文阐述了在工程施工中应如何选择、如何检测、如何控制及注意事项。

The concretes admixture,which is also called as the fifth component of concrete beside sand,stone,water and cement,is the fine chemical product to improve certain properties of concretes(as well as the mortar,paste) according to the construction technical demand..With the development of concrete technology,the application of concretes admixture is getting more and more widespread and more and more important.However,the admixture variety is numerous and its properties are significantly different.in view of these questions.This article elaborated how to choose,how to examine,how to control the concretes admixture and matters needed to pay attention in the project construction.