کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
258324 | 503615 | 2013 | 15 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Experimental and modelling research of the accelerated calcium leaching of cement paste in ammonium nitrate solution Experimental and modelling research of the accelerated calcium leaching of cement paste in ammonium nitrate solution](/preview/png/258324.png)
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.
Journal: Construction and Building Materials - Volume 40, March 2013, Pages 832–846