通过混凝土坍落度试验，从水泥、粉煤灰及塑化剂三方面研究了水泥及粉煤灰与塑化剂的适应性问题。结果表明，控制水泥中 C3A含量在 8％以下，熟料塑化度为 2. 5～ 3. 5，采用二水石膏作缓凝剂，控制合理的水泥细度及级配，采用优质粉煤灰作掺合料，选用合适的塑化剂，均有利于提高其与塑化剂的适应性。 Through the slump test of concrete, the adaptability of cement, fly ash and plasticizer was studied from the aspects of cement, fly ash and plasticizer. The results showed that the content of C3A in the control cement was less than 8% and the degree of plasticization of clinker was 2.5-3.5. The use of gypsum as retarder to control the fineness and grading of cement, Ash as admixture, the choice of a suitable plasticizer, are conducive to improving their adaptability with the plasticizer.