Print Email Facebook Twitter Effect of particle size distribution on the pre-hydration, hydration kinetics, and mechanical properties of calcium sulfoaluminate cement Title Effect of particle size distribution on the pre-hydration, hydration kinetics, and mechanical properties of calcium sulfoaluminate cement Author Lv, Leyang (Shenzhen University) Luo, Shitao (Shenzhen University) Šavija, B. (TU Delft Materials and Environment) Zhang, Hongzhi (Shandong University) Li, Lin (Saint-Gobain Research (Shanghai) Co. Ltd.) Ueda, Tamon (Shenzhen University) Xing, Feng (Shenzhen University) Date 2023 Abstract The particle size distribution (PSD) has a significant influence on the fresh and final properties of cement and its derived products. In this paper, CSA cements with three different mean diameters (D50), ranging from 6.04 to 26.62 μm were prepared by milling. The pre-hydration behavior was quantitatively analyzed, including the degree of pre-hydration, the dynamic change of mineral assemblage and the morphology of the prepared CSA cement exposed to 57%, 75% and 97% relative humidities (RHs) for up to 90 days. Hydration kinetics, porosity, and compressive strength of the cement paste made with fresh and pre-hydrated CSA cement with different PSD were also characterized. The results show that pre-hydration of CSA cement at RH higher than 75% has detrimental effects on the hydraulic activity and strength gain of CSA cement. However, coarser CSA cement (D50 = 26.62 μm) does not only show better resistance to pre-hydration, but also higher compressive strength and lower porosity. Subject Calcium sulfoaluminate cementParticle size distributionPre-hydration To reference this document use: http://resolver.tudelft.nl/uuid:373ece62-e8bc-4da2-aa96-5db63f70df4c DOI https://doi.org/10.1016/j.conbuildmat.2023.132497 Embargo date 2024-01-17 ISSN 0950-0618 Source Construction and Building Materials, 398 Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2023 Leyang Lv, Shitao Luo, B. Šavija, Hongzhi Zhang, Lin Li, Tamon Ueda, Feng Xing Files PDF 1_s2.0_S0950061823022134_main.pdf 14.54 MB Close viewer /islandora/object/uuid:373ece62-e8bc-4da2-aa96-5db63f70df4c/datastream/OBJ/view