CONNECTIVITY OF INDIVIDUAL PHASE IN CEMENT PASTE AND THEIR IMPACT ON THE CONCRETE PROPERTIES

摘要：

Cement hydrating system is a disorder and multiphase system where individual phase(briefly categorized as solid phase and pore phase) changes with time. In this paper, theconnectivity of individual phase in hydrating cement paste is studied. The percolationphenomenon of solid phase and the de-percolation of capillary porosity are emphasized. Theirimpacts on the concrete properties are discussed as well. It was found that the percolationthreshold of solid phase is strongly correlated with the setting of cement paste. Theconnectivity and the de-percolation threshold of capillary pores determine the waterpermeability. Based on these observation and, thanks to the advanced cement hydration andmicrostructure simulation model, the desired concrete properties are therefore can be designedby manipulating the mix components and proportion.

作者: Guang Ye Zhiwei Qian Likun Tan W.de Vries K.van Breugei

作者单位: Microlab,Faculty of Civil Engineering and Geosciences,Delft University of Technology,Delft,the Nethe Microlab,Faculty of Civil Engineering and Geosciences,Delft University of Technology,Delft,the Nethe Department of Civil and Environmental Engineering,Carnegie Mellon University,USA

会议类型: 国际会议

会议名称: 1st International Conference on Microstructure Related Durability of Cementitious Composites(首届与水泥基复合材料耐久性相关的微观结构国际会议)

会议地点: 南京

会议语种:英文

页码: 1211-1220

在线出版日期: 2008-10-13（万方平台首次上网日期，不代表论文的发表时间）