Title:
Field Applications of Ground-Glass Concrete in Cold Climatic Region
Author(s):
Deep Tripathi, Richard Morin, Mohamed Lamine Kateb, and Arezki Tagnit-Hamou
Publication:
Materials Journal
Volume:
121
Issue:
4
Appears on pages(s):
105-120
Keywords:
chloride-ion penetrability; cold climate; coring; field/site; freezing and thawing; glass powder; ground-glass pozzolan; scaling resistance
DOI:
10.14359/51740781
Date:
8/1/2024
Abstract:
Ground-glass pozzolan has recently been considered a supplementary cementitious material by Canadian (CSA A3000) and American (ASTM C1866/C1866M) standards, but limited studies have been done on ground-glass use on-site. So, in this study, several sidewalk projects were performed by the SAQ Industrial Chair at the University of Sherbrooke from 2014 to 2017 on fields with different proportions of ground glass (that is, 10, 15, and 20%) in different conditions considered in such a cold climatic region. Sidewalks are a nonstructural plain concrete element that are among the most exposed to chloride and freezing and thawing in saturated conditions of municipal infrastructures. Coring campaigns
were carried out on these concretes after several years of exposure
(between 5 and 8 years). The results of core samples extracted from
the sites were compared to the laboratory-cured samples taken
during the casting. These laboratory concrete mixtures were tested
for fresh, hardened (compressive strength), and durability (freezing
and thawing, scaling resistance, chloride-ion penetrability, electrical
resistivity, and drying shrinkage) properties (up to 1 year).
The results show that ground-glass concrete performs very well
at all cement replacements in all manners in terms of long-term
performance. Besides that, using ground-glass pozzolan in field
projects also decreases the carbon footprint and environmental and
glass disposal problems.