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    Clinkering and hydration study of non-active and active Belite-Alite-Ye'elimite (BAY) cements

    • Autor
      Zea-Garcia, Jesus D.; Gómez-de-la-Torre, María de los ÁngelesAutoridad Universidad de Málaga; Santacruz-Cruz, María IsabelAutoridad Universidad de Málaga
    • Fecha
      2017-10-17
    • Palabras clave
      Cemento
    • Resumen
      The manufacturing process of ye'elimite rich cements emit about 15-37% less CO2 to the atmosphere than OPC. Cements that contain belite, ye’elimite and ferrite, known as BYF cements, are promising eco-friendly binders. However, belite, their main phase, shows a slow hydrating behaviour; therefore the corresponding mortars present lower mechanical strengths than OPC at early ages. To solve this problem, BYF clinkers can be activated by: i) forming alite jointly with belite and ye’elimite during clinkering, known as BAY clinkers. The alite and ye’elimite reaction with water should develop high mechanical strengths at early ages, besides, belite contributes to later curing times. ii) A second activation is based on the stabilisation of alpha forms of belite by dopants. The objective of this work is to obtain two types of BAY clinkers (standard and active BAY) using CaF2 as mineraliser and borax as dopant agent to stabilize alpha forms of belite phase. After that, anhydrite was added as sulphate source to obtain the corresponding cements. The hydration behaviour of these cements has been studied through rheological and x-ray diffraction measurements, the latter combined with Rietveld quantitative phase analysis. In addition, mechanical and dimensional properties of BAY mortars are also presented and discussed.
    • URI
      http://hdl.handle.net/10630/14650
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    Abstract-CCS17-JesusDavidZeaGarcia.pdf (60.21Kb)
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    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA
    REPOSITORIO INSTITUCIONAL UNIVERSIDAD DE MÁLAGA