文章介绍了混凝土外加剂的种类、作用和应用范围;通过分析外加剂选择及应用过程中各种影响的因素,提出外加剂选择的依据和原则;对使用过程中选择水泥品种、外加剂掺量、掺配方法提出了具体要求;从掺配外加剂混凝土的搅拌、运输、养生、振捣、实验等方面明确了应重点注意的问题及相应的对策。 This paper introduces the types, functions and application scopes of concrete admixtures. By analyzing the factors influencing the selection and application of admixtures, the basis and principles of admixture selection are put forward. The selection of cement admixture, admixture dosage , The specific requirements of the blending method are put forward. The problems that should be paid attention to and the corresponding countermeasures should be clarified from the aspects of mixing, transportation, health preservation, vibrating and experiment of admixture admixture concrete.