What are the 4 main types of aggregates?

While 20mm gravel can be used in some light-use areas, it is not ideal as a sub-base. Sub-base layers typically require well-graded materials such as MOT Type 1 or crushed stone that compacts tightly, ensuring stability and strength.

All Hogan aggregates are sourced from 3 carefully managed sustainable quarries and processed through modern crushing and screening equipment to maintain consistent grading and performance.

Our team tracks quality and gradings continuously, not just at start-up – an ongoing loop of sampling, checking and nudging.

Every load is subject to rigorous quality control, giving contractors confidence in strength, durability and compliance with relevant standards.

Quarry aggregate refers to materials such as gravel, crushed stone that are extracted from quarries. These aggregates are essential in construction, commonly used in concrete, asphalt, drainage systems and as base layers for roads and foundations.

For bedding concrete slabs, a sharp sand or granodust is generally used as it cushions the slabs and accommodates minor thickness variations.