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Influence of hardened cement paste content on the water absorption of fine recycled concrete aggregates
A linear relationship was found between the mean size of four granular classes (0/0.63, 0.63/1.25, 1.25/2.5, 2.5/5 mm) of different laboratory-made fine recycled concrete aggregates (FRCA) and their hardened cement paste content (CPC). A method based on salicylic acid dissolution was specifically developed for the measurement of CPC. Results showed that bound water and density of FRCA were strongly correlated with their CPC. Identically, the water absorption coefficient also followed a linear trend as a function of the CPC but only for the three coarser granular classes. Indeed, the water absorption coefficient of the finer fraction of FRCA (0/0.63 mm) cannot be correctly measured using European standard method EN 1097-6 or method no. 78 of IFSTTAR; but it can be obtained by extrapolation from the previous linear trend. As a consequence, the accurate total water absorption of FRCA (fraction 0/5 mm) can be estimated.
Influence of hardened cement paste content on the water absorption of fine recycled concrete aggregates
A linear relationship was found between the mean size of four granular classes (0/0.63, 0.63/1.25, 1.25/2.5, 2.5/5 mm) of different laboratory-made fine recycled concrete aggregates (FRCA) and their hardened cement paste content (CPC). A method based on salicylic acid dissolution was specifically developed for the measurement of CPC. Results showed that bound water and density of FRCA were strongly correlated with their CPC. Identically, the water absorption coefficient also followed a linear trend as a function of the CPC but only for the three coarser granular classes. Indeed, the water absorption coefficient of the finer fraction of FRCA (0/0.63 mm) cannot be correctly measured using European standard method EN 1097-6 or method no. 78 of IFSTTAR; but it can be obtained by extrapolation from the previous linear trend. As a consequence, the accurate total water absorption of FRCA (fraction 0/5 mm) can be estimated.
Influence of hardened cement paste content on the water absorption of fine recycled concrete aggregates
Zhao, Zengfeng (author) / Remond, Sébastien (author) / Damidot, Denis (author) / Xu, Weiya (author)
Journal of Sustainable Cement-Based Materials ; 2 ; 186-203
2013-12-01
18 pages
Article (Journal)
Electronic Resource
English
Cement paste content and water absorption of recycled concrete coarse aggregates
| British Library Online Contents | 2014
Cement paste content and water absorption of recycled concrete coarse aggregates
| Online Contents | 2013
Cement paste content and water absorption of recycled concrete coarse aggregates
| Springer Verlag | 2013
Cement paste content and water absorption of recycled concrete coarse aggregates
| Springer Verlag | 2014
Cement paste content and water absorption of recycled concrete coarse aggregates
| Online Contents | 2014