Use Of Olivine For The Production Of MgO-SiO2 Binders

Type of content
Journal Article
Thesis discipline
Degree name
Publisher
Frontiers Media SA
Journal Title
Journal ISSN
Volume Title
Language
Date
2021
Authors
Allan Nye S
Vineet S
Christopher O
Barnaby S
Chris C
Abstract

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.

Description
Citation
Allan Nye S, Vineet S, Christopher O, Barnaby S, Chris C Use Of Olivine For The Production Of MgO-SiO2 Binders. Frontiers in Built Environment. 7.
Keywords
olivine, acid digestion, electrolysis, MgO, hydration, compressive strength
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
Fields of Research::40 - Engineering::4005 - Civil engineering::400505 - Construction materials
Fields of Research::40 - Engineering::4011 - Environmental engineering::401102 - Environmentally sustainable engineering
Fields of Research::40 - Engineering::4004 - Chemical engineering
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