Robertson’s has eleven aggregate processing plants located in Southern California and Nevada: Jean, San Diego, Cabazon, Banning, San Bernardino, Redlands, Rialto, Palmdale, Barstow and two in Lucerne as well as a rail system, delivering aggregate to the L.A. market from our Cabazon quarry, to provide for the aggregate needs of the industry.
Our plants perform aggregate reduction and washing operations, employing state-of-the-art machinery to produce the highest quality materials for our customers. Typical products we provide include ready mixed concrete aggregate, bedding materials for underground utilities, crushed aggregate base rock and more. Whether you’re doing a repair, standard maintenance, or starting a new project, Robertson’s has you covered with our wide selection of aggregate products.
The quality of products from our processing plants are carefully monitored to ensure compliance with all applicable specifications including federal and state agencies in addition to commercial and residential contractors. Our goal is to produce products that will consistently meet or exceed customer specification. We’re here to help you get your next commercial, residential, or municipal project get underway with the finest aggregate base in the business. Call us today to get started!
What is Aggregate?
Aggregate is granular material, such as sand, gravel, crushed stone or broken concrete.
1 1/2" Crushed Rock
1/2" Crushed Rock
3/4" Crushed Rock
3/8" Crushed Rock
Caltrans Class II Base
Cement Treated Base (CTB)
Crushed Aggregate Base (CAB)
If I want a 1/2" rock, is that what I get?
Class II Base - Recycled
Sand Fines or Gas Sand
Washed Concrete Sand
Washed Plaster Sand
Dry Plaster Sand
Select Sand SE -30+
What makes for a good drainage material?
There are many products that will provide a good drainage material. The material to be used is dependent on how much of a water flow is needed as well as the size of the opening if pipe is used. Crushed products are recommended.