Before revision: Generally consisting of a specific type of construction aggregate, it is placed by means of attentive spreading and compacting to a minimum of 95%DIF < relative compaction, thus providing the stable foundation needed to support either additional layers of aggregates or the placement of an asphalt concrete wearing course which is applied directly on top of the base course.
After revision: Generally made of a construction aggregate, it is spread and compacted to at least 95%DIF < relative compaction, thus providing the stable foundation needed to support either additional layers of aggregates or the placement of an asphalt concrete wearing course which is applied directly on top of the base course.