摘要
利用正交试验方法,选用水胶比、粉煤灰掺量、砂率作为配合比设计参数,考察其对高性能混凝土温缩系数的影响规律.研究结果表明:在所研究的3个配合比设计参数中,砂率对温缩系数的影响最为显著,特别是在高温区(10℃～45℃)时,但在低温区(-25℃～10℃)对温缩系数并无明显影响;而粉煤灰掺量和水胶比对高性能混凝土的温缩系数影响非常有限.
Taking the weight ratio of water to cementing material, the amount of fly-ash additive and the content of sands as the mix-designed parameters, the influence of those parameters on the temperature shrinkage features of high performance concrete was studied with orthogonal experiments. The results showed that the content of sands has a bigger influence on the temperature shrinkge features at high temperature （10 ℃ ～45℃）, but has a little influence at low temperture（-25℃～ 10℃） ;while the amount of fly-ash additive and the weight ratio of water to cementing material have a limited influence on the temperature shrinkage features. 6 tabs, 3 figs, 7 refs.
出处
《长安大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2005年第4期1-4,共4页
Journal of Chang’an University(Natural Science Edition)
基金
河北省交通厅科技计划项目
关键词
道路工程
高性能混凝土
配合比设计参数
温缩系数
road engineering
high performance concrete （HPC）
mix-designed parameters
temperature shrinkage factor
