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Use of Coal Waste as Fine Aggregates in Concrete Paving Blocks
Federal University of Rio Grande do Sul—UFRGS, Post Graduate Programme in Mining, Metallurgical and Materials Engineering—PPGE3M, Porto Alegre, Brazil
Federal University of Rio Grande do Sul—UFRGS, Post Graduate Programme in Mining, Metallurgical and Materials Engineering—PPGE3M, Porto Alegre, Brazil
Federal University of Rio Grande do Sul—UFRGS, Post Graduate Programme in Mining, Metallurgical and Materials Engineering—PPGE3M, Porto Alegre, Brazil
Federal University of Rio Grande do Sul—UFRGS, Post Graduate Programme in Mining, Metallurgical and Materials Engineering—PPGE3M, Porto Alegre, Brazil
- 1 Federal University of Rio Grande do Sul—UFRGS, Post Graduate Programme in Mining, Metallurgical and Materials Engineering—PPGE3M, Porto Alegre, Brazil
- 2 Federal University of Rio Grande do Sul—UFRGS, Post Graduate Programme in Mining, Metallurgical and Materials Engineering—PPGE3M, Porto Alegre, Brazil
- 3 Federal University of Rio Grande do Sul—UFRGS, Post Graduate Programme in Mining, Metallurgical and Materials Engineering—PPGE3M, Porto Alegre, Brazil
- 4 Federal University of Rio Grande do Sul—UFRGS, Post Graduate Programme in Mining, Metallurgical and Materials Engineering—PPGE3M, Porto Alegre, Brazil
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Abstract
The aim of this work was to study the use of coal waste to produce concrete paving blocks. The methodology consid ered the following steps: sampling of a coal mining waste; gravity separation of the fraction with specific gravity be tween 2.4 and 2.8; comminution of the material and particle size analysis; technological characterization of the material and the production of concrete paving blocks. The results showed that the coal waste considered in this work can be used to replace conventional sand as a fine aggregate for concrete paving blocks. This practice can collaborate in a cleaner coal production.
KeywordsCoal WasteRecyclingEnvironmentConcrete
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