摘要
对0-400次冻融循环后高性能混凝土进行了抗冻融性能试验,测得了其冻融前后试件的质量与相对动弹模。试验结果表明:伴随着冻融循环次数的增加,400次冻融循环后试件质量有一定的损失但不显著;而相对动弹模有一定的降低,但幅度不大,125-150次冻融循环是其相对动弹模显著降低分界点。并建立了高性能混凝土相对动弹模与冻融循环次数变化之间的公式。
The tests were performed about behavior of plain high-performance concrete (HPC) after 0-400 freeze-thaw cycles.The mass loss and relative dynamic modulus were measured.The experimental results show that the mass loss for HPC after 400 freeze-thaw cycles doesn't decreases evidently with the increase of freeze-thaw cycles,and its relative dynamic modulus decreases lightly,moreover it is distinct around 125-150 freeze-thaw cycles.The formula of relative dynamic modulus for plain HPC with freeze-thaw cycles parameters is proposed.
出处
《混凝土》
CAS
CSCD
北大核心
2009年第4期49-50,53,共3页
Concrete
基金
辽宁省教育厅高等学校科学研究项目<恶劣环境因素下混凝土破坏准则和耐久性研究>(2023901023)
关键词
高性能混凝土
冻融循环
质量损失
相对动弹模
high-performance concrete (HPC)
fi'eeze-thawcycles
mass loss
relative dynamic modulus