Abstract
Recycled aggregates are the aggregates which are collected from the construction and demolition waste. Now a day the demolition waste production is more, due to this the environment gets polluted. So the use of recycled aggregates in the place of natural aggregates will decrease the waste accumulation. The scope of using recycled aggregates increasing day by day because of that the cost will decrease effectively. The main focus of this paper is to find the strength qualities of recycled aggregates so as to use it as an alternative for the natural aggregates and fly ash and alccofine are used for the partial replacement of the binding material for an M40 grade concrete. Here concrete is made with replacement of natural aggregates with recycled aggregates (25%, 50%, 75% and 100%), partial replacement of cement with a fly ash (25%) and alccofine (0%, 5%, 10% and 15%). Mix design of binary blended recycled aggregate concrete is done by using IS: 10262-2019. Workability is measured and mechanical properties like compressive strength, flexure and split tensile strength were determined for 7days and 28 days. Alkaline attack is evaluated after 28 days of NaOH solution curing. It is observed from the test results mechanical properties of the concrete is decreased if recycled aggregate & alccofine content.
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