Study on carbonization and frost resistance of concrete under different stress levels
WANG Xuejun
Abstract：Based on the experimental study on the carbonation performance and frost resistance of concrete under different stress,the coupling mechanism of concrete stress and carbonation,stress and freeze-thaw were studied. The stress state in the test includes:0.60ft,0.45ft,0.30ft,no stress,0.30fc,0.45fc,0.60fc. The test results show that the different stress states have significant influ-ence on the carbonation resistance of concrete. The tensile stress will accelerate the carbonation of concrete,and compressive strength will delay the carbonation of concrete. With the extension of the carbonization time,the carbonation depth of concrete in-creasing continuously and the carbonation velocity declining gradually. The stress state of frost resistant performance significantly, frost resistance performance of concrete under tensile stress is poor,proper compressive stress can effectively improve the frost resis-tance of concrete,the test results show that the frost resistance of concrete under 0.45fc compressive stress is the optimum. Based on the test results,put forward the stress correction coefficient Ψ for frost resistance of concrete.
Keywords：stress statecarbonationfrost resistantdurability
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 44-47 )