Fractal Analysis on Pore Structure and Modeling of Hydration of Magnesium Phosphate Cement Paste

Magnesium phosphate cement (MPC) paste is hardened by the acid–base reaction between magnesium oxide and phosphate. This work collects evaluates thermodynamic data at 25 °C a pressure of 0.1 MPa establishes hydration model MPC pastes. The influence magnesium–phosphorus molar (M/P) ratio water-to-binder (W/B) on product explored simulation. Following this, initial ultimate states state pastes are visualized, porosity different as well fractal analysis presented. result shows that small M/P beneficial for formation main products. boric acid acts retarder, has significant effect lowering pH paste, slows down After comparison, it can be concluded decreasing W/B ratios helps reduce porosity. In addition, dimension Df positively proportional to porosity, reducing MKPC