A Guide to Crushed Rock

If you are in the market for crushed rock, you might have paving, construction, piping, drainage, landscaping, fish pond, aquarium or water fountain crushed rock needs. Here's a simple guide to help you know what you might come across and make the correct choices:

Terminologies for Crushed Rocks You Might Come Across

You might come across the terms aggregate (recycled concrete, crushed stone, gravel, granite, slag, etc.), crushed concrete and scoria (rocks from a volcano). These are just forms of crushed rocks derived from different types of rocks, which may have different applications depending on their composition and features. For example, scoria is best used for drainage applications because of its porous nature, while granite aggregate is best used for driveways, pathways and landscaping.

Sizes and Colours

There are different sizes and colours of crushed rock. Depending on their functional or aesthetic use, you can choose between 5mm to 20mm crushed rock. As for the colour, you can come across different shades of brown, grey, white and black.

Your Crushed Rock Project Needs

Depending on your project (paving, construction, piping, drainage, landscaping, etc.), you might be dealing with a specialist who is qualified to handle that specific project. If he or she starts talking about different types of crushed rock, you may need and why you need them, equipped with the information above, you can now understand the specialist better. You can even be in a position to make recommendations to the specialist such as using a particular size of crushed rock at a particular place and a particular colour and size in another area.


Crushed rocks are not expensive, especially if they are recycled. This is why it is used for pavements, driveways and parking spaces. Concrete can be expensive because you need to mix different components that you purchase separately; cement, sand and gravel. You can even purchase ready-made concrete, but its price is based on the price of the mixed items and the mixing and transportation service.

For pavements, driveways and parking spaces, you just have to ensure that the ground is even, pour crushed rocks and even them out. You, however, have to consider the weight of the vehicles that might access the driveway or parking spaces. If they are very heavy, you might need to reinforce the surface before pouring crushed rocks. Reinforcing means laying a firm foundation beneath the crushed rocks that can withstand the weight of heavy vehicles.