Tests discover that anti-segregability agent can control the concrete's cohesion in transporta-tion. The paper introduces the development, performance and application of the additive for premixed self-com-paction concrete. 通过试验发现,抗离析剂能控制预拌自密实混凝土在运输过程中粘聚性的下降,着重介绍预拌自密实混凝土外加剂的研制、性能及工程应用情况。