YJ-引气减水剂不同于一般的普通型或高效型减水剂,它既要满足引入一定空气量,又要满足不降低混凝土强度,并且稍有增长的要求。也就是需要研制一种特效的具有多种功能的表面活性剂,使混凝土的减水率达10%左右,并增强10%以上,含气量增 YJ-air-entraining water-reducing agent is different from ordinary ordinary-type or high-efficiency-type water-reducing agent. It not only meets the requirement of introducing a certain amount of air, but also meets the requirement of not increasing the strength of concrete and increasing slightly. That is, there is a need to develop a special effect of a variety of surfactants, so that the concrete water reduction rate of about 10%, and increased by more than 10%, increased gas content