The user must care of the effect of antifreeze when using concrete water reducer in winter.If the antifreeze does not well,it’s easy to be make the concrete into contain cracks.The following situations will have this hazard:

1.Due to unfavorable construction conditions and environment when winter construction ,it is a season of project quality accidents.

2.The concealment and lag of quality accidents.In other words,the project is dry in the winter, and most of them are exposed in the spring.Therefore,it is very difficult to deal with the accident.Repairing light people and returning them seriously will not only cause losses to the project,but also affect the service life of the project. 

3,Winter construction planning and preparation must be timely.So short preparation time and complicated technical requirements.Some quality accidents be caused by the rush construction in often time.