进行了外加剂改善混凝土泌水的试验研究。结果表明 ,在混凝土中掺入适量的减水剂 ,能起到减少泌水的作用。此外 ,适当延长减水剂的缩合时间 ,复合加入适当的改性组份、合适的缓凝保坍组份、合适的增稠组份或合适的引气量都能明显提高混凝土的保水性 ,减少泌水 The experimental research on admixture to improve concrete bleeding was carried out. The results show that adding appropriate amount of superplasticizer in concrete can play a role in reducing bleeding. In addition, the appropriate extension of the water reducing agent condensation time, the appropriate combination of modified components, the appropriate retarded condensate, appropriate thickening components or a suitable amount of air entrainment can significantly improve the water retention of concrete to reduce Bleeding