长江科学院院报Issue(12)：129-133,143,6.DOI:10.11988/ckyyb.20140572
不同龄期混凝土动态力学性能研究
Study on Dynamic Mechanical Properties of Concrete under Different Ages
摘要
Abstract
Uniaxial compression tests of cylinder specimens (diameter of 150 mm,and length of 300 mm)for con-crete were carried out under different ages (28 d,112 d,183 d,345 d,810 d,1248 d,1550 d)and different strain rates (10 -5 ,5 ×10 -5 ,1 ×10 -4 ,5 ×10 -4 ,1 ×10 -3 ,5 ×10 -3 ,10 -2 /s),and impacts of strain rate and age on me-chanical properties of concrete were explored.The results show that:1)at the same age,peak stress of concrete in-creases with strain rate,and at the same strain rate,peak stress of concrete increases with age,but peak stress tends to be stable after the age of concrete is up to 800 d;2)when strain rate is given,capability of energy absorption of concrete increases with age,and the relationship between capability of energy absorption and age of concrete is simi-lar with that of peak stress and age of concrete.关键词
混凝土/峰值应力/应变速率/龄期/吸能能力Key words
concrete/peak stress/strain rate/age/capability of energy absorption分类
建筑与水利引用本文复制引用
黄仕超,彭刚,邹三兵,梁辉..不同龄期混凝土动态力学性能研究[J].长江科学院院报,2015,(12):129-133,143,6.基金项目
国家自然科学基金项目（51279092）；三峡大学研究生科研创新基金项目（CX2014010）；三峡大学自主探索基金项目；三峡大学培优基金项目 （）
