Properties of Concrete with A New Type of Air-entraining Agent(Trandemark SJ-2)

? SJ 2 air entraining agent was introduced and the properties of concrete with this agent were studied.The results showed that the raw materials producing SJ 2 air entraining agent and its characteristics were unique,and the properties of concrete with SJ 2 air entraining agent were as good as those of concrete with the world famous Vinsol air entraining agent.Thorefore,SJ 2 air entraining agent is an air entraining agent with high quality that is worthy of recommending it to concrete construction in China. 〔