Patent ID: 8226765

Claim:
A method of making ready-mix concrete using with at least 70% coarse recycled aggregate, the method comprising the steps of: locating a vehicle having a batch mixer proximate loading bins; providing raw material in bins with material in mix proportions for a ready-mix concrete, the raw material including coarse aggregate comprising at least 70% by weight of the coarse aggregate of recycled rock and no more than 30% by weight of the coarse aggregate of virgin rock; programming a mix proportion of raw materials in a controlling plant computer; weighing the raw materials necessary for the programmed mix proportion, the measured raw materials including a weight of coarse aggregate such that the weight of coarse aggregate comprises at least about 70% or more coarse recycled aggregate and the remaining weight of the coarse aggregate comprises coarse virgin aggregate and fly ash; transferring the raw materials to the batch mixer; and mixing the raw materials into ready-mix concrete.