Journal
CEMENT AND CONCRETE RESEARCH
Volume 33, Issue 7, Pages 1039-1045Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0008-8846(03)00008-5
Keywords
hydration; characterization; X-ray diffraction; waste management; chromium
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Considering the increasing use of limestone cement manufacture, the present paper tends to characterize limestone behavior in the presence of Cr(VI). The research reported herein provides information regarding the effect of Cr(VI) from industrial wastes in the limestone cement hydration. The cementitious materials were ordinary Portland cement, as reference, and limestone blended cement. The hydration and physicomechanical. properties of cementitious materials and the influence of chromium at an early age were studied with X-ray diffraction. (XRD), infrared spectroscopy (FTIR), conductimetric and mechanical tests. Portland cement pastes with the addition of Cr(VI) were examined and leaching behavior with respect to water and acid solution were investigated. This study indicates that Cr(VI) modifies the rate and the components obtained during the cement hydration. (C) 2003 Elsevier Science Ltd. All rights reserved.
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