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Medjigbodo, G.; Rozière, E.; Charrier, K.; Izoret, L.; Loukili, A. |
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Hydration, shrinkage, and durability of ternary binders containing Portland cement, limestone filler and metakaolin |
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2018 |
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Construction and Building Materials |
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183 |
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114-126 |
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Durability; Limestone filler; Metakaolin; Shrinkage; Strength; Ternary binders |
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Abstract |
A partial replacement of the clinker by latent hydraulic or pozzolanic materials is encouraged due to environmental and specific technical requirements. Such substitution remains limited to a relatively low level (less than 30% by mass of cementitious materials). An experimental research work was carried out on mortars made with binary and ternary binders (Portland cement; metakaolin; limestone filler) to reach 45% total replacement. In order to investigate the activating effect of reduced water-to-cement ratio, two series of mixtures were designed with W/C0 of 0.42 and 0.5. Their heat of hydration, portlandite content, shrinkage, porosity, and carbonation were monitored. The tests were performed to understand the evolution of their relative strength (activity index) and durability parameters. The strength development of mortars with ternary binders was found to depend on metakaolin properties, including manufacturing process and particle size distribution. Reducing W/C0 ratio accelerated pozzolanic reaction and allowed improving early-age strength and durability parameters. © 2018 Elsevier Ltd |
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Association Technique de l'Industrie des Liants Hydrauliques (ATILH), 7 place de la Défense, Paris La Défense, 92974, France |
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Export Date: 1 September 2018 |
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EcoFoG @ webmaster @ |
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814 |
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