Class II Base Material

Start With A Strong Foundation

Aggregate consists of hard, graduated fragments of inert mineral materials, including sand, gravel, crushed stone, slag, rock dust, or powder. Made from a mixture of different sizes of crushed rock from 3/4″ all the way down to fine dust. Recycled aggregate is produced by crushing concrete or asphalt, to reclaim the aggregate. Recycled aggregate can be used for many purposes. The primary market is road base. Highly compactable, Class II Road base is excellent for base applications. 

Main Street Materials is pleased to provide Class II Base material, crushed miscellaneous, and virgin aggregates to our customers. Class II Base Rock meets the specifications of the State of California Standard Specifications, Section 26. Recycling of asphalt pavement can save money for local governments and other purchasers, create additional business opportunities, save energy when recycling is done on site, conserve diminishing resources of aggregates and petroleum products.

Our Construction Aggregates Are Used In A Number Of Ways:

  • As a base material underneath highways, walkways, airport runways, parking lots and railroads.
  • In water filtration, purification and erosion control.
  • In conjunction with other materials for construction of roads, bridges, parking lots, airports and runways.

This product is made to meet Caltrans Class 2 city and county specifications for aggregate base rock under road surfaces. It’s a high-quality product that is produced with manufactured crushed rock fines. It can also be used for the top of an unpaved road surface.

Caltrans Specifications for Aggregate Base and Recycled Aggregate

Aggregate Base (AB) is typically made of a recipe of mixing different sizes of crushed rock together forming the aggregate which has certain desirable properties. 20 mm or 3/4 inch Aggregate Base, Class 2, is used in roadways and is an aggregate made of a specific recipe of different sizes and quality of rock inclusive of 20 mm (3⁄4 in) to fine dust. An aggregate is normally made from newly quarried rock, or it is sometimes allowed to be made from recycled asphalt concrete.

Both the recycled aggregate base and aggregate base meet Caltrans specifications.

Benefits Of Using Class II Base Include:

  • Support and distribute heavy pavement loads to the ground
  • Facilitate drainage
  • Provide a stable construction platform