RT Journal Article
T1 Quantitative correlations among textural characteristics of C-S-H gel and mechanical properties: 												Case of ternary Portland cements containing activated paper sludge and fly ash
A1 Goñi, S.
A1 Frias, M.
A1 Vegas, I.
A1 García, R.
A1 De La Villa, R. Vigil
AB The hydraulic activity of ternary Portland cements containing different proportions of commercial thermally activated paper sludge (APS(I)) and fly ash (FA) from coal combustion was evaluated from the textural characterization of the C-S-H gels formed during hydration. The study was accomplished by means of the specific surface area (SSA) and pore-size distribution (PSD), which were measured by the sorption isotherms of nitrogen gas and the BET method. The microstructure was characterized by scanning electron microscopy (SEM). The incorporation of such admixtures (APS and FA) clearly revealed an increase in both porosity and SSA. This effect decreased with the progress of hydration, together with a refinement of the nano-porous structure of C-S-H. In addition, high correlations were found between nano-structural characteristics of the C-S-H gel and mechanical compressive strengths.
SN 0958-9465
YR 2012
FD 2012-09
LK https://hdl.handle.net/11556/3818
UL https://hdl.handle.net/11556/3818
LA eng
NO Goñi , S , Frias , M , Vegas , I , García , R & De La Villa , R V 2012 , ' Quantitative correlations among textural characteristics of C-S-H gel and mechanical properties : Case of ternary Portland cements containing activated paper sludge and fly ash ' , Cement and Concrete Composites , vol. 34 , no. 8 , pp. 911-916 . https://doi.org/10.1016/j.cemconcomp.2012.05.002
NO The authors gratefully acknowledge the financial support by the Minister of Science and Technology MAT2009-10874-CO3 and to the Homen Paper Madrid company, CDEM and Spanish Cement Institute (IECA) for their help in this project.
DS TECNALIA Publications
RD 26 jul 2024