CAJ | 학술논문

利用自然浸泡试验，研究了不同养护龄期的矿渣混凝土在不同暴露时间下的氯离子表观扩散系数，分析了养护龄期对氯离子表观扩散系数的影响。将表观扩散系数看作暴露时间内即时扩散系数的积分平均值，将得到的表观扩散系数转换为即时扩散系数，推导出养护龄期与即时扩散系数时间依赖性常数的关系。结果表明，混凝土中氯离子表观扩散系数随着养护龄期的增加而减小，且减小幅度逐渐减缓；养护龄期与表观扩散系数成幂函数关系。即时扩散系数的时间依赖性常数随着养护龄期的增加而增加，且增加幅度逐渐减小；即时扩散系数时间依赖性常数与养护龄期符合平方根关系。
이용자연침포시험，연구료불동양호령기적광사혼응토재불동폭로시간하적록리자표관확산계수，분석료양호령기대록리자표관확산계수적영향。장표관확산계수간작폭로시간내즉시확산계수적적분평균치，장득도적표관확산계수전환위즉시확산계수，추도출양호령기여즉시확산계수시간의뢰성상수적관계。결과표명，혼응토중록리자표관확산계수수착양호령기적증가이감소，차감소폭도축점감완；양호령기여표관확산계수성멱함수관계。즉시확산계수적시간의뢰성상수수착양호령기적증가이증가，차증가폭도축점감소；즉시확산계수시간의뢰성상수여양호령기부합평방근관계。
The chloride apparent diffusion coefficients at different immersion time in slag with differ-ent curing ages were studied through natural immersion tests.The influence of the curing age on chlo-ride apparent diffusion coefficients was analyzed.And the apparent diffusion coefficient was consid-ered as the integral mean of the instantaneous diffusion coefficients during the testing period,and the obtained apparent diffusion coefficient was transferred to the instantaneous diffusion coefficients.The relationship between the curing age and the constant of time dependence of the instantaneous diffusion coefficient was derived.The experimental results show that the chloride apparent diffusion coefficient decreases with the increase of the curing age and the decrease rate slows down gradually.There is a power function relationship between the apparent diffusion coefficient and the curing age.The constant of time dependency of the instantaneous diffusion coefficient increases with the increase of the curing age and the increase rate slows down gradually.There is a square root relationship between the con-stant of time dependency of the instantaneous diffusion coefficient and the curing age.