RT Journal Article
T1 The Influence of Activated Coal Mining Wastes on the Mineralogy of blended cement pastes
A1 Frias, Moises
A1 Rodriguez, Olga
A1 Vigil de la Villa, Raquel
A1 Garcia, Rosario
A1 Martinez-Ramirez, Sagrario
A1 Fernandez-Carrasco, Lucia J.
A1 Vegas, Iñigo
AB In recent years, kaolinite-based wastes are focusing the attention of researchers to obtain recycled metakaolinite, with consequent environmental and socioeconomic benefits. One of these lines of research is based on coal mining waste, which once activated thermally, it becomes a highly pozzolanic product (ACM). This study reports the influence of activated carbon mining waste on the formation and evolution of the mineralogical phases in the ACM/cement system as well as their influence on the microstructure up to 90 d of reaction. Mineralogical analyses clearly show that the addition of ACM modified mineralogical compounds of blended cements. The C4AH13 and C4A CH12 were the predominant phases in this type of cements; while in the ordinary portland cement cements, portlandite, ettringite, and carboaluminate were main hydrated phases. Two differential zones in the pore size distribution of the C–S–H gels at 12 and 4.5 nm were observed, predominating the formation of C–S–H gels at 12 nm when 20% of ACM was added to the cement.
YR 2016
FD 2016-01-01
LA eng
NO Frias , M , Rodriguez , O , Vigil de la Villa , R , Garcia , R , Martinez-Ramirez , S , Fernandez-Carrasco , L J & Vegas , I 2016 , ' The Influence of Activated Coal Mining Wastes on the Mineralogy of blended cement pastes ' , unknown , vol. unknown , no. 1 , pp. 300-307 . https://doi.org/10.1111/jace.13840
NO Publisher Copyright: © 2015 The American Ceramic Society.
DS TECNALIA Publications
RD 3 jul 2024