Journal
CEMENT AND CONCRETE RESEARCH
Volume 31, Issue 2, Pages 183-192Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0008-8846(00)00464-6
Keywords
rheology; bond strength; Ca3SiO5; cement paste
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Dynamic mode rheometry was used to study the evolution of the structure of cement and pure tricalcium silicate pastes from mixing up to setting and even after setting, together with the nature of the forces responsible for the mechanical properties of the pastes. A special mixer-type tool was used to study theology during the very first minutes following the end of mixing, which are out of reach with classical tools. Both kinds of pastes have the same behavior. It was found that the main evolution of the structure of the pastes occurs during the very first minutes following the end of mixing, while there is no change in interparticular forces up to setting and even a few hours later. Setting, as defined by the Vicat needle, is not related to any particular change of the nature of the forces or structural transition within the paste. (C) 2001 Elsevier Science Ltd. All rights reserved.
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