Experimental investigation on Properties of hybrid fibre reinforced Concrete containing industrial Wastes

Abstract

In a developing country like India, there is a growing interest towards construction of civil infrastructures. Construction of new civil infrastructures using concrete would require large volumes of aggregates which would demand huge exploitation of natural resources. In order to achieve sustainable development, use of industrial by-products for replacing conventional fine and coarse aggregates could be made. Existing research studies have indicated that industrial by-products such as fly ash, copper slag, blast furnace slag etc. can very well be used for partially replacing fine and coarse aggregates in concrete. In order to effectively use the industrial by-products in the construction industry, combined use of different industrial by-products would be required for partially replacing cement and fine aggregates. Addition of different types of fibres at different percentages would also enhance the mechanical properties of the concrete. newlineLiterature survey indicated that research studies that investigated the mechanical properties of concrete consisting of several industrial by-products such as copper slag and silica fume together with different percentages of different types of fibres are not available. In this study, mechanical properties of sustainable fibre reinforced concretes with different grades (M40 and M50) consisting of copper slag and silica fume used for partially replacing fine aggregates and cement respectively are studied. Different percentages of different types of fibres such as steel fibres, basalt fibres and alkali-resistant glass fibres are used. Silica fume is used to replace 7% of cement and different percentages (10, 20 and 30%) of copper slag are used to replace conventional fine aggregates. The percentages of fibres used are varied in the range 0.5-1.5% by weight of binder content (cement and silica fume). newline