Study on the Influence of Lithium Slag on the Performance of C30 Underwater Pile Concrete
The influence of lithium slag on workability,compressive strength,frost resistance and shrinkage of C30 underwater pile concrete was studied.The results show that the addition of lithium slag can reduce the expansion degree of C30 underwater pile concrete,but improve its cohesion.When the amount of lithium slag is greater than 30%,the workability is greatly reduced.Lithium slag can reduce the 3d compressive strength of C30 underwater pile concrete,but the 28d compressive strength can be increased when the content of lithium slag is less than 20%,and the maximum compressive strength of 28d is obtained when the content of lithium slag is 10%.With the increase of lithium slag content,the mass loss rate of C30 underwater pile concrete after different freeze-thaw cycles is increasing,and the mass loss rate increases faster with the increase of lithium slag content.The shrinkage value of concrete at different ages increases gradually with the increase of lithium slag con-tent,and the 56d shrinkage value of concrete with lithium slag content greater than 30%is less than the 28d shrinkage value.
国家科技期刊平台
NSTL
万方数据
