The Use of Coal Waste in Concrete Construction & Survey of Compressive Strength

Document Type : Research Paper

Authors

1 Professor, Department of Civil Engineering, Babol Noshirvani University of Technology

2 M.Sc. in Structural Engineering, Babol Tabari Institution of higher education

3 Assistant Professor, Department of Civil Engineering, Babol Noshirvani University of Technology

Abstract

With respect of a lot of resources of coal waste and its destructive impacts on environment & nature, presentation of engineering solutions for apply of this waste in concrete construction can have great impact on use of these coal wastes & subsequently, the decrease of environmental risks due to coal waste depot in nature. In this article from jig and flotation coal waste that is obtained around of the central Alborz markazi coal washing Factory in Zirab city of Mazandaran province, it use in concrete as substitution a part of cement and fine aggregate with two different resistance (20&31 MPa). Afterwards, the impact on various percentages of this substitution is reviewed on compressive strength properties of concrete. Base on gained compressive strength results, the best substitution percentage of used sand with fine aggregate of jig coal waste is 10% & the best substitution percentage of used cement with the powder of jig and flotation coal waste is 5% for the sample with 28 days age. 

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