What are air-entraining agents and air-entraining water-reducing agents? What are their functions?

Air-entraining agent is an admixture that can introduce a large number of evenly distributed, stable and closed micro-bubbles during the concrete mixing process. Air-entraining water-reducing admixture is an admixture with the functions of air-entraining agent and water-reducing agent. Air-entraining agents can reduce the solid-liquid-gas phase interfacial tension, increase the strength of the bubble film, and…