What is the function of air-entraining agent? What is the water-cement ratio of waterproof concrete?

Air-entraining agent is an admixture that introduces a large number of evenly distributed tiny closed bubbles during the mixing process of concrete or mortar. Its basic functions are shown in the following aspects. (1) Improve the workability of fresh concrete mixtures Most air-entraining agents are anionic surfactants. Generally, the water reduction rate of air-entraining agents…