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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Recycled Waste Latex Paint as an Admixture in Concrete Sidewalks
Author(s): M. Nehdi
Publication: Special Publication
Appears on pages(s): 131-144
Keywords: chloride ions; concrete; latex paint; recycling; sidewalks; surface scaling; waste
Abstract:Waste latex paint constitutes 12% of the total hazardous waste collected in Ontario, Canada. Currently only 10 to 30% of this waste is being collected. With increasingly more stringent environmental regulations on volatile organic compounds (VOCs), more latex-based paints will be produced compared to solvent- and oil-based alkyds. This will result in more waste latex paint being generated annually in Ontario and across North America. It costs municipalities between $0.90 and $1.40 CAD per litre to dispose of such waste. This study aims at investigating the benefits of recycling waste latex paint in concrete with a special focus on concrete sidewalks. Waste latex paint was used in concrete mixtures both as a partial replacement for virgin latex and for mixing water. It is shown that concrete mixtures incorporating waste latex paint have improved workability, higher flexural strength, lower chloride ion penetrability, better resistance to deicing salt surface scaling and could be more economic because they require less water-reducing and air-entraining admixtures. The annual urban concrete sidewalk construction could use the yearly production of waste latex paint while producing sidewalks with enhanced properties and durability.
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