Through the fast freeze-thaw cycle test,accelerated carbonation test,and natural carbonation test,the durability performance of lining concrete under combined action of freeze-thaw cycle and carbonation were studied.The experimental results indicate that freeze-thaw cycle apparently accelerates the process of concrete carbonation and carbonation deteriorates the freeze resistance of concrete.Under the combined action of freeze-thaw cycle and carbonation,the durability of lining concrete decreases.The carbonation depth of lining concrete at tunnel openings under freeze-thaw cycles and tunnel condition was predicted.For the high performance concrete with proposed mix ratio,the lining concrete tends to be unsafe because predicted carbonation depth exceeds the thickness of reinforced concrete protective coating.Adopting other measurements simultaneously to improve the durability of lining concrete at the tunnel openings is essential.
参考文献
| [1] | 李果,袁迎曙,耿欧.气候条件对混凝土碳化速度的影响[J].混凝土,2004(11):49-51,53. |
| [2] | 金祖权,赵铁军,侯保荣,张鹏,李秋义.海底隧道衬砌混凝土在多种因素下的冻融损伤[J].广西大学学报（自然科学版）,2010(01):90-95. |
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