江淮水利科技Issue(3)：21-24,4.DOI:10.20011/j.cnki.JHWR.202403004
锈蚀与冻融作用对混凝土抗拉性能的影响
Effects of corrosion and freeze-thaw action on the tensile properties of concrete
摘要
Abstract
To investigate the effects of different corrosion rates and freeze-thaw cycles on the tensile properties of concrete dur-ing its service life,alternating chloride ion migration and freeze-thaw immersion tests were conducted.Based on the results of uniaxial tensile tests,a method for calculating the concrete damage factor considering both corrosion and freeze-thaw damage was established.The results showed that the damage to tensile stress caused by corrosion penetration was less than that caused by freeze-thaw cycles.Freeze-thaw cycles of 30 and 50 times reduced the tensile stress by approximately 3.46%and 16.54%,respectively.When subjected to 50 freeze-thaw cycles,the damage factor of specimens with chloride ion penetration levels of 5%and 10%increased by 6.24%and 9.66%.Evaluating the tensile properties of the damaged specimens could provide reli-able data for simulating the damage to concrete structures over long service periods.关键词
锈蚀/冻融循环/混凝土/拉伸性能/损伤因子Key words
corrosion/freeze-thaw cycles/concrete/tensile performance/damage factor分类
建筑与水利引用本文复制引用
李国栋..锈蚀与冻融作用对混凝土抗拉性能的影响[J].江淮水利科技,2024,(3):21-24,4.
