incorporação de cuso4 residual em argamassa, como método de disposição final incorporation of residual cuso4 into cement as a final disposal method
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incorporação de cuso4 residual em argamassa, como método de disposição final incorporation of residual cuso4 into cement as a final disposal method

;Matheus Paes Paschoalino;Antonio Alberto da Silva Alfaya;Maria Josefa Santos Yabe;Sônia Maria Nobre Gimenez
greece and rome 2006 Vol. 29 pp. 699-703
171
paschoalino2006qumicaincorporao

Abstract

Residual CuSO4 was incorporated into the mass utilized for cement preparation. To a cement mass with 1:0.5:5 of cement, lime and sand to 0.25, 0.50, 0.75 and 1.00% of residual CuSO4 were added. The sulfate was mixed separately with lime and water to induce metal precipitation. The hardened test bodies were submerged in Milli-Q water for three months. No Cu was detected in the water by Atomic Absorption Spectrometry. The best proportion for mechanical resistance and porosity is 0.50%. The cement is adequate for non-structural objects.

Keywords

residues cement final disposalchemistry

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DOI:
10.1590/S0100-40422006000400014
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