Study on New Type of Concrete Air-Entraining Agent

摘要

This paper introduces the performance of a new air entraining agent (MY-1), and studies the performance of its air entraining concrete by comparing it with rosin air entraining agent (MY-2) and alkylbenzene sulfonate (MY-3), such as workability, bleeding rate, strength loss and frost resistance of fresh concrete. The results show that MY-1 air entraining agent can obviously improve the workability of concrete and reduce the bleeding rate of concrete; when the air content is 5.1%, the strength loss is 10.65%, and the relative dynamic modulus after 300 freeze-thaw cycles is 70.01%. The performance of MY-1 air entrained concrete is better than MY-2 and my-3 air entrained concrete in many aspects.