What is the purpose of adding air entraining agents to concrete? #seo

What is the purpose of adding air-entraining agents to concrete?
#air-entrainingagents #concreteadditives #freeze-thawresistance
#concretemix #concreteconstruction

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Видео What is the purpose of adding air entraining agents to concrete? #seo канала Rodrigue Kamdieun (VBA Explorer)