Sustainable Ecocements: Chemical and Morphological Analysis of Granite Sawdust Waste as Pozzolan Material
Santiago Yagüe,
Cristina González Gaya,
Victor Rosales Prieto,
Alberto Sánchez Lite
Affiliations
Santiago Yagüe
Department of Construction and Manufacturing Engineering, ETSII, National Distance Education 5 University (UNED), C/Juan del Rosal 12, 28040 Madrid, Spain
Cristina González Gaya
Department of Construction and Manufacturing Engineering, ETSII, National Distance Education 5 University (UNED), C/Juan del Rosal 12, 28040 Madrid, Spain
Victor Rosales Prieto
Department of Construction and Manufacturing Engineering, ETSII, National Distance Education 5 University (UNED), C/Juan del Rosal 12, 28040 Madrid, Spain
Alberto Sánchez Lite
Department of Materials Science and Metallurgical Engineering, Graphic Expression in Engineering, Cartographic Engineering, Geodesy and Photogrammetry, Mechanical Engineering and Manufacturing Engineering, School of Industrial Engineering, Universidad de Valladolid, Paseo del Cauce 59, 47011 Valladolid, Spain
The processes focused on stone cutting generate a large volume of waste. Small size waste, silt/clay, is not used and goes to landfill. However, the composition of these wastes makes them useful for adding to cements and for use in construction. In the present paper, 10% Ordinary Portland cement is replaced by 10% waste from granite sawmill, which is studied to obtain sustainable ecological cement. This replacement provides advantages from the morphological and chemical point of view at the cements. The waste has a particle size that does not exceed 15 µm and that when replacing in the cement, after the hydration reaction, generates structures where Calcium Silicate Hydrate (C-S-H) gels and double layered hydroxide compounds (LDH) are reaction products formed in high concentration. These products develop stable phases in the structures over long time periods such one year, which was the time frame used in this study.
