Low-grade and manufactured aggregates — A review of prospects for utilisation

Future supply options in areas which import large quantities of aggregate are reviewed and applied as an example to the U.K. situation. Particular emphasis is given to wastes and lower-grade natural materials and their potential for use in concrete. Adequate alternatives from local sources exist in the U.K., but their future use will be restricted unless the cost of processing plant is reduced and/or objective data on performance are readily available.