摘要
利用刀口法研究了水胶比、锂渣掺量、粉煤灰掺量和锂渣细度对复掺锂渣、粉煤灰高性能混凝土早期塑性收缩裂缝的影响,试验结果表明水胶比对混凝土早期抗裂性能影响较大,粉煤灰掺量和锂渣掺量分别次之。在相同条件下,复掺锂渣、粉煤灰高性能混凝土的早期抗裂性能优于普通水泥混凝土,锂渣细度的适度增加会在一定程度上提高混凝土的早期抗裂性能。
It studies the contribution of water to binder ratio,lithium slag dosage,fly ash dosage and lithium slag fineness to the early-age plastic shrinkage and cracking of high performance concrete added with lithium slag and fly ash.The experiment demonstrates the water to binder ratio has the most influence among the three factors,and the lithium slag dosage has the least.The cracking resistance at early ages of high performance concrete added with lithium slag and fly ash is better than that of common cement concrete in the same condition.To some extent,the increase of lithium slag fineness can improve the cracking resistance at early ages of high performance concrete.
出处
《混凝土》
CAS
CSCD
北大核心
2012年第1期65-67,共3页
Concrete
基金
国家高等学校博士点专项科研基金资助课题(200807580007)
新疆水利水电工程重点科研基金资助项目(XJZDXK-2010-02-12)
关键词
高性能混凝土
锂渣
粉煤灰
刀口法
水胶比
掺量
早期抗裂性能
high performance concrete
lithium slag
fly ash
knife-edge method
water to binder ratio
poraver
cracking resistance at early ages
