外加剂在高性能混凝土工程中的应用

Application of Admixture in High-performance Concrete Works

高性能混凝土是近期混凝土技术发展的主要方向,高性能混凝土在配制上的特点是低水胶比,选用优质原材料,并除水泥、水、集料外,必须掺加足够数量的矿物细掺料和高效外加剂。在实际工程中,外加剂能使高性能混凝土对下列性能有重点的予以保证:耐久性、工作性、适用性、强度、体积稳定性、经济性。特别适用于高层建筑、道路工程、桥梁、大体积混凝土以及暴露在严酷环境中的建筑结构等。

Recent high--performance concrete technology is the main directions of development, high--pertorrnance concrete in preparation on the characteristics of a low water--cement ratio, the choice of high quality raw materials, and in addition to cement, water, aggregate, to be mixing a sufficient number of mineral small admixture And efficient admixture. In practical engineering, high--performance concrete admixture can focus on the following properties to be ensured： durability, work, applicability, strength, size stability, economy. Particularly applicable to high--rise buildings, road engineering, bridges, mass concrete, and exposed to the harsh environment of the building structure and so on.