MOT Type 1 aggregate is an approved granular sub-base material that is created using recycled crushed concrete and rubble. It’s made up of a mix of larger 40mm pieces right down to dust which compacts well to form a solid base, making it a great option to use on:
- Car Parks
- Garden paths
- Trench fills
- Over-site fills
For a product to be classed as Type 1, it must comply with the Department of Transport Specifications of Highway Works. Type 1 MOT is often used as a replacement for limestone and granite, due to those types of aggregates having limited availability and are expensive to transport.
Is MOT Type 1 aggregate good for sub-bases and drainage?
In line with the rest of the construction industry, the paving and drainage trades are heavily reliant on the use of all types of aggregates.
Type 1 aggregate is very effective for bulk filling or levelling material and when levelled, there are also plenty of options for decorative aggregates on top. Granite or limestone chippings are essentially MOT Type 1 that has been filtered to retrieve the chippings of the required size. Whether you should use Type 1 or granite or limestone chippings depends on the project at hand. MOT Type 1 does indeed offer a greater level of compaction, which will provide a stronger sub-base material.
However, a small disadvantage to using MOT Type 1 is that it is technically not a permeable sub-base material, meaning that little water will pass through and, if any does, it will filter through at a much slower rate.
Granite or limestone provide an incredibly fast-draining sub-base. Even after fully compacted, there are still tiny holes within the base material that allows water to pass through with ease. However, the advantage to MOT Type 1 is that without the smaller particles being present, the compaction in granite or limestone is not as good as it is with MOT Type 1.
Can you make concrete without aggregates?
Aggregates for concrete must be chosen wisely. Did you know that aggregates consist of 60 to 75% of the total volume of concrete? The type and size of the aggregate mixture depend on the required thickness and the end result of the final product.
Concrete created without aggregate is known as mortar. Mortar happens to be a mixture of fine aggregates such as sand and a binding material like cement mixed with water. The cement to sand ratio depends on the purpose mortar is used for. Mortar concrete holds a fine-grained appearance once set.
Common projects for MOT Type 1
MOT Type 1 a high-quality fill or subbase material used mainly for things such as road construction, car parking areas and home driveways. Type 1 MOT aggregate can achieve just as much as other crushed stone aggregates, but for a more rational price and quicker delivery.
Aggregate at K&B Crushers
All of our MOT type 1 aggregate is the product of reclaimed and recycled concrete materials that are crushed, screened and sorted using our capable fleet of crushers. Our usable recycled type-1 sub-base aggregate material can either be reused by yourselves or we can remove it completely from the site to allow further work to proceed.
Along with MOT Type 1, we are also licensed to accept all types of unwanted concrete, hardcore and other demolition waste materials for recycling and processing. Our main concrete recycling centre is based at Southampton Docks but we can provide on-site crushing services to produce a stockpile of reusable type-1 crushed concrete to save you both time and money. Get in touch with us today.