Batch mixing of concrete using recycled water

摘要

The density of recycled water is determined from the metered volume and the weight which has entered the water supply tank. Based on this density, the additional quantity of recycled water, required to meet the prescribed mixture formulation, is calculated. This latter quantity is then added. An Independent claim is included for the apparatus for the above process. A water supply line (13) is equipped to meter the water (20). A data processor (16) carries out the calculations indicated. Preferred Features: Volume flow and associated weight are determined over an interval during which recycled water is fed. A table is used to determine the additional quantity of recycled water required, This is based on a mean density of solids in the water, of 2100 kg/m<3>.