ABSTRACT
Simply producing a clean, crushed and well-graded material is not sufficient to ensure effective recycling. The recycled material produced must be suitable for specific applications and it should comply with certain grading limits, contain minimal levels of contaminants and meet other requirements of stability and durability. Once the concrete has been crushed, sieved and if necessary decontaminated, it can find applications as 1) general bulk fill, 2) fill in drainage projects, 3) sub-base or base material in road construction or 4) aggregate for new concrete. In this section we shall primarily discuss recycled aggregate for production of new concrete. Aggregate for other purposes are briefly dealt with in sections 7.9, 8.9,12 and 13.
