Modeling magnesia-phosphate cement paste at the micro-scale

Abstract In this paper, a computer model is established to simulate the microstructure of magnesia-phosphate cement paste at the micro-scale. The chemical reaction in the paste is analyzed first, based on which the microstructure is modeled through interacted growing and eroding spherical particles representing the solid phases. The pore structure of the simulated paste is characterized by a closing operation based algorithm. It is found that the simulated pore size distribution curves are consistent with corresponding experimental results.

[1]  Min Ku Jeon,et al.  Stabilization of Cs/Re trapping filters using magnesium phosphate ceramics , 2012, Journal of Radioanalytical and Nuclear Chemistry.

[2]  D. M. Roy,et al.  New Strong Cement Materials: Chemically Bonded Ceramics , 1987, Science.

[3]  Jiao Zhang,et al.  Effect of raw material ratios on the compressive strength of magnesium potassium phosphate chemically bonded ceramics. , 2013, Materials science & engineering. C, Materials for biological applications.

[4]  Zhu Ding,et al.  High-Early-Strength Magnesium Phosphate Cement with Fly Ash , 2005 .

[5]  J. de Pablo,et al.  Leaching behaviour of magnesium phosphate cements containing high quantities of heavy metals. , 2010, Journal of hazardous materials.

[6]  Uwe Gbureck,et al.  Injectability and mechanical properties of magnesium phosphate cements , 2011, Journal of materials science. Materials in medicine.

[7]  Chungkong Chau,et al.  Property evaluation of magnesium phosphate cement mortar as patch repair material , 2010 .

[8]  J. Pera,et al.  Mechanism of setting reaction in magnesia-phosphate cements , 2000 .

[9]  Quanbing Yang,et al.  Factors influencing properties of phosphate cement-based binder for rapid repair of concrete , 1999 .

[10]  Yue Li,et al.  Factors that affect the properties of magnesium phosphate cement , 2013 .

[11]  Zongjin Li,et al.  Realistic pore structure of Portland cement paste: experimental study and numerical simulation , 2013 .

[12]  Hongyan Ma,et al.  Mercury intrusion porosimetry in concrete technology: tips in measurement, pore structure parameter acquisition and application , 2014, Journal of Porous Materials.