Abstract
The mass flow and risk evaluation of recycled aggregates on road works were studied, as there are a lot of inputs and outputs of aggregates on road works . The mass flow was surveyed on each road works conducted for 3 years in a local area and the energy requirement for road works based on the mass flow was estimated. The aggregates dug out may be reused in the spot and the reuse of discharged aggregates extremely decreases the energy consumption of road works in comparison with that of the conventional road works because of cutting down a new input of aggregates. Crushed concrete used as roadbeds are scarcely dissolved into water under the circumstance of roadbeds. The effect of eluate on the environmental pollution is little.
