In summary, even though air entrained concrete gives substantial pros in cold climates, It's not universally necessary. The decision to use it should be informed by regional local climate problems, cost concerns, and precise structural wants. Some concrete admixtures have already been in use for a really very long time https://zanderonfzp.getblogs.net/67934449/polycarboxylic-ether-based-superplasticizers-an-overview