Effects of corrosion and freeze-thaw action on the tensile properties of concrete
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.
国家科技期刊平台
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