矿物掺合料对混凝土内部相对湿度分布的影响  

The Influence of Mineral Additives on Internal Relative Humidity Distribution of Concrete

作　　者：蒋正武[1] 孙振平[1] 王培铭[1] 

机构地区：[1]同济大学混凝土材料研究国家重点实验室,上海200092

出　　处：《粉煤灰综合利用》2003年第2期16-19,共4页Fly Ash Comprehensive Utilization

基　　金：国家 973重大基础研究项目 (编号 :2 0 0 1CB61 0 70 4 );同济大学工科基金资助

摘　　要：研究了矿物掺合料的种类、掺量和组合对混凝土在等温干燥条件下内部相对湿度 (InternalRelativeHumidi ty ,IRH)的分布以及自干燥引起的IRH变化的影响。结果表明 ,由于不同矿物掺合料对混凝土水化速率与过程影响不同 ,对混凝土自干燥引起的IRH下降也不同。低水胶比、掺矿物掺合料的混凝土中IRH变化与分布不仅受水分扩散控制 。The effects of types, content and combination of mineral additives on internal relative humidity (IRH)distribution of concrete in uniaxial isothermal drying condition and IRH change resulting from self-desiccation were investigated. The results indicate that, since different mineral additives affect the rate and process of concrete hydration differently. IRH reduction of concrete with them resulting from self-desiccation changes correspondingly. IRH change and distribution of concrete with w/B and mineral additives is mainly dependent on self-desiccation as well as moisture diffusion.

关 键 词：矿物掺合料 混凝土 相对湿度 分布 自干燥 水分扩散 

分 类 号：TU528.041[建筑科学—建筑技术科学]