Use Of Olivine For The Production Of MgO-SiO2 Binders

Autor: Scott Allan Nye, Shah Vineet, Oze Christopher, Shanks Barnaby, Cheeseman Chris
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Frontiers in Built Environment, Vol 7 (2021)
Druh dokumentu: article
ISSN: 2297-3362
DOI: 10.3389/fbuil.2021.640243
Popis: The potential for using MgO and SiO2, recovered from olivine, was investigated for use as a cementitious binder system. The MgO to SiO2 proportion for the binder was fixed at 1:1. The nature of the hydration products were characterized using a variety of techniques including isothermal calorimetry, XRD, FTIR, and SEM. The primary binding component of the paste was determined to be magnesium silicate hydrate (M-S-H). The recovered silica exhibited faster reactivity compared to commercially available silica fume. Compressive strengths in excess of 20 MPa were obtained using the materials recovered from olivine.
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