RT Journal Article
T1 A model for the C-A-S-H gel formed in alkali-activated slag cements
A1 Puertas, F.
A1 Palacios, M.
A1 Manzano, H.
A1 Dolado, J. S.
A1 Rico, A.
A1 Rodríguez, J.
AB For first time, an experimental and computational study has been conducted to define a structural model for the C-A-S-H gel forming in alkali-activated slag (AAS) pastes that would account for the mechanical properties of these materials. The study involved a comparison with the C-S-H gel forming in a Portland cement paste. The structure of the C-A-S-H gels in AAS pastes depends on the nature of the alkali activator. When the activator is a NaOH, the structure of the C-S-H gel falls in between tobermorite 1.4. nm with a mean chain length of five, and tobermorite 1.1. nm with a mean length of 14. When waterglass is the activator the structure of the C-A-S-H gel is indicative of the co-existence of tobermorite 1.4. nm with a chain length of 11 and tobermorite 1.1. nm with a chain length of 14. This very densely packed structure gives rise to excellent mechanical properties.
SN 0955-2219
YR 2011
FD 2011-10-15
LK https://hdl.handle.net/11556/3216
UL https://hdl.handle.net/11556/3216
LA eng
NO Puertas , F , Palacios , M , Manzano , H , Dolado , J S , Rico , A & Rodríguez , J 2011 , ' A model for the C-A-S-H gel formed in alkali-activated slag cements ' , Journal of the European Ceramic Society , vol. 31 , no. 12 , pp. 2043-2056 . https://doi.org/10.1016/j.jeurceramsoc.2011.04.036
NO This research was funded by the European Union under contract NMP3-SL-2008-214030 and the Spanish Ministry of Science and Innovation under project BIA2007-61380. M. Palacios participated under a postdoctoral contract awarded by the Spanish National Research Council. H. Manzano acknowledges the grant received from the Basque Government through the “Improvement of Research Staff” program of the Education, University and Research Department.
DS TECNALIA Publications
RD 30 jul 2024