Creagh

Type 1 unbound mixture

Sub-Base Aggregate

SKU: 1587

Breakdown

Unitary Price: Log in to view price
Supply Type: Bulk Loose Product

Supplier: Creagh
Available To: Northern Ireland
Availability: Delivery & Collection Available

Product Description

Type 1 Unbound Mixture is a well-graded crushed aggregate widely used as a sub-base material for roads, pavements, and hardstandings. It consists of a controlled blend of coarse and fine particles that compact together to form a dense, stable foundation capable of supporting heavy loads. When properly compacted, Type 1 creates a strong interlocking structure with excellent load distribution, making it the industry standard for general construction and civil engineering works. Unlike free-draining materials, the presence of fines helps lock the aggregate together, providing durability and resistance to movement under traffic. Key Features Well-graded unbound aggregate with fines Compacts to a dense, load-bearing layer Excellent stability and durability Suitable for heavy traffic applications Compliant with MOT Type 1 / SHW Clause 803 Typical Applications Road and highway sub-bases Driveways and car parks Footpaths and pavements Industrial yards and hardstandings Foundations beneath concrete slabs and block paving Type 1 Unbound Mixture is typically laid and compacted in layers to achieve the required strength and performance, forming a reliable base for both flexible and rigid surface courses. This makes Type 3 Sub-Base ideal for use in SuDS-compliant developments, permeable pavements, and areas prone to standing water. It provides a strong, free-draining foundation that reduces the risk of frost damage, settlement, and surface failure over time. Key Features Open-graded aggregate with minimal fines Excellent drainage performance High load-bearing capability when compacted Helps prevent water pooling and frost heave Compliant with UK highway and civil engineering standards Typical Applications Permeable paving systems Car parks and driveways Roads and access tracks Hardstandings and yards Foundations requiring drainage control Type 3 Sub-Base is commonly used as a lower sub-base layer, often beneath permeable surface courses or alongside geotextile membranes, ensuring long-term performance in both commercial and residential construction projects.