江苏大学学报（自然科学版）2012，Vol.33Issue(6)：721-725,5.DOI:10.3969/j.issn.1671-7775.2012.06.019
冻融循环下砼力学性能与相对动弹性模量关系
Relationship between mechanical properties and relative dynamic elasticity modulus of concrete after freeze-thaw cycles
摘要
Abstract
Relationships between relative dynamic elasticity modulus and concrete mechanical properties of peak tensile stress, peak compressive stress, peak tensile strain, peak compressive strain, ultimate compressive strain and initial tensile elastic modulus were investigated after freeze-thaw cycles. Samples of C20, C30, C40 and C50, undergone 0, 25, 50, 75, 100 and 125 freeze-thaw cycles, were subjected to uniaxial tensile experiments. Samples of C20, undergone 0, 25, 50 and 75 freeze-thaw cycles, were subjected to compressive experiments. Based on the test results, calculation formulas were obtained by regression. The results show that as relative dynamic elasticity modulus reduces, peak tensile stress, peak compressive stress and peak tensile strain decrease gradually, while peak compressive strain and ultimate compressive strain increase gradually.关键词
混凝土/冻融循环/相对动弹性模量/抗拉强度/抗压强度/受拉初始弹性模量Key words
concrete/freeze-thaw cycle/relative dynamic elasticity modulus/tensile strength/compressive strength/initial tensile elastic modulus分类
建筑与水利引用本文复制引用
曹大富,富立志,杨忠伟,秦晓川..冻融循环下砼力学性能与相对动弹性模量关系[J].江苏大学学报（自然科学版）,2012,33(6):721-725,5.基金项目
国家自然科学基金资助项目(50978224) （50978224）
