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oai:riuma.uma.es:10630/136202026-02-03T11:05:05Zcom_10630_2254col_10630_37953

Álvarez-Pinazo, Gema Santacruz-Cruz, María Isabel García-Aranda, Miguel Ángel Gómez-de-la-Torre, María de los Ángeles 2017-05-11T10:46:57Z 2017-08-01T04:00:03Z 2016-07 Advances in Cement Research, 2016, 28 (8), 529 – 543 1751-7605 http://hdl.handle.net/10630/13620 Belite-Ye’elimite-Ferrite cements, BYF, are a sustainable alternative to OPC to reduce CO2 emissions. The aim of this research is to understand the influence of the sulfate source on the hydration of two laboratory-prepared BYF-cements. One studied clinker contained β-belite and orthorhombic-ye'elimite (non-active), and the other one α'H-belite and pseudo-cubic-ye'elimite (activated with borax during clinkering). Pastes were mainly characterized through Rietveld-quantitative-phase-analysis of powder patterns, thermal analysis and scanning-electron-microscopy. Active-mortars developed higher compressive strengths than non-active-mortars, independently of the sulfate source. The highest values for active-mortars (w/c=0.55) were 40±1MPa (28d) with anhydrite, and 68±1MPa (120d) with gypsum. eng open access by-nc-nd Cemento Hydration of Belite-Ye’elimite-Ferrite(BYF) cements with different calcium sulfate sources journal article