不同水灰比条件下塑化剂对混凝土性能的影响

针对减水剂类型不同所引起的凝结时间差异，选择聚羧酸减水剂和氨基磺酸盐减水剂对比不同水灰比，不同掺量下混凝土凝结时间、早期强度以及后期强度的影响。最后得出，随着两种减水剂掺量的增加，无论是高水灰比还是低水灰比，凝结时间都有一定的延长。并且随着掺量的增加，混凝土的早期强度也有一定程度的降低，但是后期强度差别不大。

UNDER THE CONDITION OF DIFFERENT WATER CEMENT RATIO PLASTICIZER IN THE INFLUENCE OF THE PERFORMANCE OF CONCRETE

For the setting time difference of different plasticizer, choose polycarboxylate plasticizer and amino stdfonate plasti- cizer, through different water cement ratio, different proportion of plasticizer compared setting time of concrete,early strength and in the late strength of two kinds of plasticizer. Finally it is concluded that, with the increase of dosage of two kinds of plasticizer, high water cement ratio and low water cement ratio, setting time has a certain extend . With the increase of dosage,the early strength of concrete is also a certain degree of reduced,but there was so little difference at late strength.