建材世界
建材世界
건재세계
THE WORLD OF BUILDING MATERIALS
2014年
2期
23-26
,共4页
混凝土%氯离子扩散系数%养护龄期%NEL法
混凝土%氯離子擴散繫數%養護齡期%NEL法
혼응토%록리자확산계수%양호령기%NEL법
concrete%chloride diffusivity%curing time%NEL method
基于 NEL法研究了不同水灰比和骨料体积含量混凝土氯离子扩散系数随时间的变化规律，发现混凝土氯离子扩散系数随养护龄期的增大而减小，但118 d后减小速率变缓。进一步数据分析表明，水灰比越大或骨料体积含量越小，混凝土氯离子扩散系数随养护龄期增大而减小的趋势越明显。
基于 NEL法研究瞭不同水灰比和骨料體積含量混凝土氯離子擴散繫數隨時間的變化規律，髮現混凝土氯離子擴散繫數隨養護齡期的增大而減小，但118 d後減小速率變緩。進一步數據分析錶明，水灰比越大或骨料體積含量越小，混凝土氯離子擴散繫數隨養護齡期增大而減小的趨勢越明顯。
기우 NEL법연구료불동수회비화골료체적함량혼응토록리자확산계수수시간적변화규률，발현혼응토록리자확산계수수양호령기적증대이감소，단118 d후감소속솔변완。진일보수거분석표명，수회비월대혹골료체적함량월소，혼응토록리자확산계수수양호령기증대이감소적추세월명현。
Based on the NEL method,the variation of the chloride diffusivity of concrete with time is studied for dif-ferent water/cement ratios and aggregate volume contents.It is found that the chloride diffusivity of concrete decreases with the increase of the curing time,but the rate of decrease becomes smaller after 118 days.Further data analysis shows that,the larger the water/cement ratio is and/or the smaller the aggregate volume content is,the chloride diffu-sivity of concrete decreases with time more evidently.
