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Use: Widening of four roundabouts on the A6195 and increasing the approach carriageways from one to two lanes to improve traffic flow.  Average 600mm of 6N with up to 800mm thickness in places. Placed on top of 300mm of Class 6G with Terram. 300mm of Type 1 sub-base placed on top of 6N with Carriageway Resurfacing.

Benefits:  IBA Aggregate is an extremely cost-effective material when compared to Primary Aggregates.  There are advantages logistically when using IBAA due to the low density of the material, it allows for fewer vehicle movements because there are volumetric advantages over primary materials.