RT Journal Article
T1 Effect of ternary cements containing thermally activated paper sludge and fly ash on the texture of C-S-H gel
A1 Goñi, S.
A1 Frias, M.
A1 Vegas, I.
A1 García, R.
A1 Vigil De La Villa, R.
AB The texture of the C-S-H gels formed in ternary cement blends containing thermally activated paper sludge (APS), fly ash (FA) from coal combustion and Ordinary Portland Cement (OPC) was studied 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. Two differentiated zones in the PSD of the C-S-H gel at ∼10-20 nm and ∼5 nm were observed. The proportion of such zones depends on the age of hydration and amount of OPC replacement. The incorporation of the additions (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. High correlations were found among these nanostructure characteristics of the C-S-H gel and mechanical strengths.
SN 0950-0618
YR 2012
FD 2012-05
LK https://hdl.handle.net/11556/3128
UL https://hdl.handle.net/11556/3128
LA eng
NO Goñi , S , Frias , M , Vegas , I , García , R & Vigil De La Villa , R 2012 , ' Effect of ternary cements containing thermally activated paper sludge and fly ash on the texture of C-S-H gel ' , Construction and Building Materials , vol. 30 , pp. 381-388 . https://doi.org/10.1016/j.conbuildmat.2011.12.002
NO This work has been supported by the Minister of Science and Technology MAT2009-10874-CO3 and Spanish National Research Council (CSIC) (Ref No. 200460E617). The authors gratefully acknowledge to the Homen Paper Madrid company and Spanish Cement Institute (IECA) for their help in this project.
DS TECNALIA Publications
RD 26 jul 2024