Prediction of the Properties of Recycled Aggregate Concrete Based on the Estimation of Pore Volume

当使用高吸水率的再生骨料时，新水泥基质中形成的孔容从50纳米增加到2微米。混合料中水泥含量与总含水量的比值与孔容有很好的相关性。为了弄清水从骨料内部向新型水泥基质的迁移行为，采用微焦点X射线CT扫描仪和维氏S硬度计，考察了水的影响区域。

When the recycled aggregates with high water absorption was used, pore volume from 50nanometer to 2 micrometer formed in the new cement matrix increased. There was a good relationship between the ratio of cement content to total water in mixture and pore volume. In order to clarify the behavior of water moving from the inside of aggregates to the new cement matrix, micro-focus type X-ray CT scanner and Vicker' s hardness meter were used, and the area in which water affected was examined.