The effects of vibration mixing and non-vibration mixing on the performance of concrete were analyzed by testing the initial slump,initial expansion and compressive strength at different ages under different working conditions.The results show that the 7 d compressive strength of vibration mixing(50 s)is increased by 9.95%,and the 28 d compressive strength is increased by 10.69%.Within a reasonable vibration mixing time,the initial slump,H60 slump loss,initial expansion and L60 expansion of concrete under vibration mixing conditions are better.
NETL
NSTL
维普
万方数据
