Print Email Facebook Twitter Rheology control of limestone calcined clay cement pastes by modifying the content of fine-grained metakaolin Title Rheology control of limestone calcined clay cement pastes by modifying the content of fine-grained metakaolin Author Chen, Y. (TU Delft Materials and Environment) Zhang, Y. (TU Delft Materials and Environment) He, S. (TU Delft Materials and Environment) Liang, M. (TU Delft Materials and Environment) Zhang, Yamei (Southeast University) Schlangen, E. (TU Delft Materials and Environment) Copuroglu, Oguzhan (TU Delft Materials and Environment) Date 2023 Abstract Limestone-calcined clay-cement (LC3), as one of the most promising sustainable cements, has been under development over the past decade. However, many uncertainties remain regarding its rheological behaviors, such as the metakaolin content of calcined clay. This study aims to investigate the effect of increasing the content of fine-grained metakaolin in calcined clay on the rheology of LC3 pastes. Rheological behaviors and early-age hydration of studied mixtures were characterized using flow curve, constant shear rate, small amplitude oscillatory shear and isothermal calorimetry tests. Results show that increasing the content of fine-grained metakaolin decreased flowability but promoted structural build-up and early-age hydration. These phenomena can be attributed to the decrease of mean interparticle distance caused by the increased amount of fine-grained metakaolin, which may enhance colloidal interactions, C-S-H nucleation and direct contact between particles. Overall, modifying the fine-grained metakaolin content is a feasible approach to control the rheology of LC3 pastes. Subject limestone-calcined clay-cementmetakaolinrheologystorage modulusstructural build-upyield stress To reference this document use: http://resolver.tudelft.nl/uuid:188ee1cc-65bd-4eee-aebc-da4cdd25bf80 DOI https://doi.org/10.1080/21650373.2023.2169965 ISSN 2165-0373 Source Journal of Sustainable Cement-Based Materials, 12 (9), 1126-1140 Part of collection Institutional Repository Document type journal article Rights © 2023 Y. Chen, Y. Zhang, S. He, M. Liang, Yamei Zhang, E. Schlangen, Oguzhan Copuroglu Files PDF Rheology_control_of_limes ... kaolin.pdf 2.9 MB Close viewer /islandora/object/uuid:188ee1cc-65bd-4eee-aebc-da4cdd25bf80/datastream/OBJ/view