For concrete mixing. coal ash and VZ setretarder were adopted;
混凝土拌制中掺粉煤灰和VZ缓凝减水剂；
2
Experiment and analysis were set for retarder, and retarding plasticizers were matched to analyze the concrete performance.
对缓凝剂进行试验和分析，并配置缓凝型减水剂，对混凝土的性能进行分析。
3
The test results show that the quicker the initial set of plaster the greater the difference between the initial setting times of the plaster with addition of s type retarder.