Aggregate Base is used as the base course under asphalt pavement roadways, under concrete slabs and structural foundations, and as backfill material for underground pipelines and other underground …

Aggregate Base Course (ABC) is a construction material used in road, highways, pavements and various other infrastructure projects. In addition, it is used in as ground improvement material. It …

The aggregate base course serves as a crucial foundation layer for a road. Made of crushed stone, gravel, or recycled concrete, it is compacted and graded to specific standards and is typically placed …

Use an all-in-run aggregate/granular base course, mixed with the fine fraction, at the optimum moisture content (OMC). Ensure the sub-grade or sub-base reaches the desired compaction level before …

The aggregate base course acts as the critical load-distributing layer that can increase pavement load-bearing capacity by 30-50% compared to pavements built directly on subgrade soil.

Nov 9, 2025 · What Is Base Course Material in Construction? The base course material is the foundational layer of aggregate placed directly beneath the final surface layer of a road, pavement, …

Jan 15, 2025 · Aggregate base course material shall consist of crushed gravel or crushed rock stabilized with clay binder and water, as necessary, satisfactorily mixed, compacted and smoothed upon a …

The aggregate for base or sub-base material shall be composed of crushed stone, crushed gravel, or natural gravel which conforms to the quality requirements of AASHTO M 147 (latest revision).

Aug 14, 2009 · An aggregate base course is the layer of soil installed between the surface pavement layer and subgrade (foundation soils) of either flexible (asphalt) or rigid (concrete) pavement.

Aggregates that are typically more course in gradation with little material finer than the No. 200 sieve. These aggregates drain well, and are typically used as a base course under concrete & HMA …