摘要
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118d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。
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.
出处
《建材世界》
2014年第2期23-26,共4页
The World of Building Materials
基金
浙江省自然科学基金(LY12E08022)
