Title:
Evaluation of the Potential Use of a New Aluminum Silicate in Green Concrete Products
Author(s):
Pierre-Claver Nkinamubanzi, Patrick H.J. Mercier
Publication:
Symposium Paper
Volume:
355
Issue:
Appears on pages(s):
337-346
Keywords:
aluminum silicate, cementitious materials, concrete, mechanical properties, durability properties
DOI:
10.14359/51736041
Date:
7/1/2022
Abstract:
High purity lithium hydroxide and lithium carbonate for use in lithium-ion batteries are produced by the processing of spodumene ore from the Whabouchi mine (Northern Quebec, Canada). The main byproduct of this treatment is an aluminum silicate waste stream, which is produced in very large quantities and should be recycled to avoid its storage in landfills, which is not environmentally friendly. Previous research work by the authors on the characterization of this aluminum silicate waste stream showed its potential as a pozzolanic material and hence that it could be used by the cement and concrete industry, which would contribute to the sustainability of these industries. The purpose of this study was to assess the pozzolanic activity of this new material and its effects on the properties of concrete in its fresh and hardened states in order to evaluate the effects of replacing part of the cement with this aluminum silicate waste stream in various classes of concrete. Series of air-entrained and non-air entrained concrete mixtures were produced and tested in this study. Results from fresh state testing, mechanical and durability properties of the concrete made with this material were similar to those obtained with conventional supplementary cementitious materials and equal or superior to those obtained with reference concrete mixtures made with plain and ordinary portland cement.
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