| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 258324 | Construction and Building Materials | 2013 | 15 Pages |
Calcium leaching of cement-based materials is of concern for scientific and application significance. Considering the altered solid–liquid equilibrium curve, an accelerated calcium leaching model of pure cement paste in 6 mol/L ammonium nitrate leaching solution was built up in this research. The model was numerically solved using finite difference method, and the influences of w/c ratio and initial cement composition on leaching were addressed. The accelerated model was further verified using elemental distributions and leaching fronts. Besides, through comparing the accelerated model in 6 mol/L ammonium nitrate solution and the un-accelerated model in deionized water, an accelerated factor of about 130 was found, which was slightly influenced by the initial material compositions.
► An accelerated calcium leaching model of pure cement paste in 6 mol/L ammonium nitrate leaching solution was built up. ► The model was verified using elemental distributions and leaching fronts. ► An accelerated factor of about 130 was calculated.
