Evaluation of Transition from Fluid to Elastic Solid of Cementitious Pastes with Bauxite Residue Using Oscillation Rheometry and Isothermal Calorimetry
This work evaluates the impact of using bauxite residue (BR) as filler addition in cementitious compositions, during the early ages of transformation from the viscous fluid phase to an elastic solid. Chemical reaction and consolidation (physical phenomena of hardening) were also correlated. The chem...
Main Authors: | , , , , , |
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Format: | Article |
Language: | English |
Published: |
De Gruyter
2013-04-01
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Series: | Applied Rheology |
Subjects: | |
Online Access: | https://doi.org/10.3933/applrheol-23-23830 |
Summary: | This work evaluates the impact of using bauxite residue (BR) as filler addition in cementitious compositions, during the early ages of transformation from the viscous fluid phase to an elastic solid. Chemical reaction and consolidation (physical phenomena of hardening) were also correlated. The chemical reaction rate was accompanied using isothermal calorimetry and the consolidation measured using oscillatory rheometry (quantifying the storage modulus - G’ and relating with yield stress, σο). The results show that BR accelerates the cement hydration reaction, but in pastes with pure cement, consolidation was faster, showing a distinct effect on the fluidsolid transition. |
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ISSN: | 1617-8106 |