Specialty Aggregates

CSI produces a full range of aggregate products for erosion control, road construction and general purpose use. Our aggregates products include:


1/4″ 5mm Crusher Chip
1/2″ 5mm Road Crush
3/4″ 20mm Road Crush
1″ 25mm Road Crush
1 1/2″ 40mm Road Crush
2″ 50mm Road Crush

Pit Run

2″ Minus 50mm
3″ Minus 75mm
1 1/2″ 40mm Screen Round
3 1/2″ 90mm Screen Road

Rip Rap

5″ – 18″ 125mm – 300mm Class 1m
8″ – 18″ 200mm – 450mm Class 1
12″ – 30″ 300mm – 800mm Class 2
20″ – 44″ 500mm – 1100mm Class 3

Specialty Aggregates Frequently Asked Questions

What are the 4 main types of aggregates?

There are four primary types of construction aggregates. While there are some aggregate fine mixtures, others are much coarser depending on the application. These include crushed stone and crushed rock aggregates, crushed gravel, sand and gravel mixtures, and aggregate concrete. These types of aggregate are available from your local aggregate supplier who can help with finding the best type of aggregate stone or aggregate sand for your needs.


What are the three main sources of aggregates?

Aggregates can be derived from three main different sources. The exact type of aggregate mined will depend on the specific type of aggregate mines or aggregate production method. Raw aggregate materials such as crushed stone or crushed rock are derived from mineral aggregate deposit mining. This also includes aggregate sand. Waste slag aggregates are derived from iron and steel manufacturing. Finally, concrete recycling produced crushed aggregate concrete material.


Is aggregate the same as asphalt?

If you have been considering investing in a new exposed aggregate driveway, you may want to consider the differences between mineral specialty aggregates and asphalt. Aggregates are derived from one of three sources primarily: aggregate mining, recycled from iron and steel manufacture, or recycled concrete aggregates. Aggregates are then used in the creation of asphalt to create an exposed asphalt aggregate mixture that’s ideal for multiple applications requiring a highly durable surface.


What are the types of aggregate?

Numerous different types of aggregate exist, and the six main types of aggregate are crushed gravel, crushed stone and rock, crushed recycled concrete, sand, Type 1 MOT, topsoil, and ballast. These different types of aggregate offer different benefits and drawbacks ,and you should consult with your aggregate products supplier to find out more about which construction aggregate could be best for you.


Which rock is good for aggregate?

Aggregates are commonly made from crushed rock and crushed stone, and the types used can vary depending on the type of aggregate being made. Most commonly, sandstone is a popular choice for crushed rock aggregates for its firmness, and basalt is also popular. However, the exact rock used for aggregate products will vary from brand to brand, so it’s worth checking what type of crushed aggregate stone has been used in your chosen materials.