the invention provides a cement product setting accelerating method which can shorten the initial setting time of the cement product and enhance the production efficiency.
本发明提供一种缩短水泥制品初凝时间,提高生产效率的水泥制品促凝方法。
mix with setretarder could make compound dispersants setretarder superplasticizer which could extend initial setting time up to 20h and no negative effect on late compressive strength.
通过缓凝三元复合制成缓凝高效减水剂,延长初凝时间至20 小时以上,并且对混凝土后期强度无副作用。
in this study, tests for initial setting time of plaster are conducted by adopting plaster with 4 different initial setting times and by adding s type retarder for plaster.
本研究采用四种不同初凝时间的建筑石膏,掺入s型石膏缓凝剂,进行了初凝时间的试验。
based on the material and process requirements of dynamic water grouting engineering, slurry retention rate with different water velocities and the pumpability after initial setting time are tested.
基于现场动水注浆治理的材料与工艺要求,测定材料在不同水流速中浆体留存率与可泵性;
the influence of the two water reducer on the initial setting time were little but shortened the final setting time remarkably.
两种减水剂对该水泥初凝时间影响不大,而终凝时间明显缩短;
the initial setting time of portland cement shall not be earlier than 45 minutes, final set time not later than 390 minutes.