What is the difference between 6F2 and 6F5?
6F5 is an unbound, coarse recycled aggregate made from crushed hardcore and concrete and graded from 75mm down to dust. 6F2 can be used as bulk fill to build up levels, as a temporary hard standing, for firming up soft or wet ground or for use as a layer below Type 1 crushed/primary.
What is the difference between 6F1 and 6F2?
6F1/6F4, 6F2/6F5 Granular Fill 6F1/6F4 (formerly 6F1 Recycled) is a finer capping layer that is used in the same way as 6F5 but with a finer grading. 6F4 is generally 31.5mm to dust. 6F2/6F5 Recycled is a coarse-graded material ranging from 125mm to dust.
What is 6F2?
6F2 is an aggregate which is composed of crushed concrete, brick and mortar produced as a by-product of demolition projects known in the trade as 6F2 Recycled Capping.
Is 6F2 a waste?
We are regularly asked by our customers to remove or relocate 6F2 from their sites which has been used for temporary works. The material is then technically deemed a waste product. The problem occurs when you test the 6F2 from a waste perspective, the results frequently highlight contamination in the material.
What can 6F2 be used for?
6F2 Capping is mainly used a sub-base for roads and buildings although it has many other uses such as Piling Mats and general backfill. The coarse nature of 6F2 Capping makes it a very good all in one product which when compacted forms a hard wearing surface.
Why is it called 6F5?
The term 6F5 Capping is generally used to describe a product that is similar in size and grading to recycled 6F2 Crusher Run but made from quarried stone instead.
Is 6F1 the same as Type 1?
6F1 – Again this is a very good general purpose aggregate and often used on top of the 6f2 as this is a fine material of 45mm down. Perfect to compact into any small areas and still create a hard wearing surface. This is often used as a substitute for primary type 1.
Is 6F2 a Type 2?
Usage: 6F2 stone or type 2 crushed concrete is the by-product of demolition and is an inexpensive, coarse aggregate that can be used as a well-draining sub-base for various projects, including roads, pathways, patios, driveways and buildings.
What size is 6F2 stone?
What is the difference between 6F2 vs 6F5?
| 6F2 | 6F5 | |
|---|---|---|
| Size (mm) | Percentage by Mass Passing | Percentage by Mass Passing |
| 10 | 15 – 60 | 15-60 |
| 5 | 10 – 45 | 0-35 |
| 600 (Microns) | 0-25 | 0-12 |
What is Type 2 crushed concrete?
What is a Type 1 sub-base?
Type 1 Sub Base is generally a 40mm graded to dust material that is laid and compacted to form a level stable construction layer as a platform for asphalt or concrete. It is typically used in the construction of highways, car parks, footways and hard standing areas.
What is a capping layer?
A capping layer helps to create a construction platform where the subgrade is not viable. It is granular product from a crushed rock quarry, and often incorporates recycled materials. Capping layer materials help to reduce costs and to protect the subgrade from rainfall and weathering.
What is the difference between MOT Type 1 and 2?
It usually contains finer material than type 1, being composed of fewer angular aggregate sizes also know as scalpings. Type 2 mot can be used for driveways, backfill material, paths and patio areas and to fill in pot holes and compacts down to a hard base.
What is Type 3 sub-base?
Type 3 sub-base is a pure crushed granite, limestone or clean crushed concrete. Usually a 40mm product that has been screened to create a reduced fines aggregate. This product is fully certified according to the Specification for Highway Works. This is the most widely used sub-base where less fines are required.
What is Type 2 sub-base?
Our Type 2 is a crushed aggregate with extra dusts and fines, which makes the perfect sub base for a range of domestic and commercial construction projects. Graded to 50mm down to dust and fines no specified grading, it is finer than our MOT Type 1 sub base, as it is composed of fewer larger angular scalpings.
How thick is a capping layer?
They are constructed by: Laying a relatively thin layer of material (max. 250mm). Thoroughly compacting the layer.
What are capping materials?
What size is Type 3 aggregate?
40mm
In very general terms, Type 3 is an open graded crushed aggregate roughly in the range 40mm to dust.
Is 6F2 capping better for the environment?
However, a recycled material is both better for the environment and more economical than material from a quarry. In the Specification for Highway Works, 6F2 is defined as capping and is intended to be placed over the sub-grade to increase the strength of the subgrade, prior to placing the more expensive sub base and final surfacing.
What is a capping layer in civil engineering?
The requirement is mostly for Class 6F5 which is manufactured in crushed rock, recycled and seconday aggregates. A capping layer helps to create a construction platform where the subgrade is not viable. It is granular product from a crushed rock quarry, and often incorporates recycled materials.
What is 6F2 aggregate?
6F2 is an aggregate which is composed of crushed concrete, brick and mortar produced as a by-product of demolition projects known in the trade as 6F2 Recycled Capping.
Confusingly the terms 6F2 and 6F5 refer to a similar product i.e. a 4”-5” Crusher Run but one being produced from quarried material and the other from recycled materials. Some Quarries refer to 6F2 as quarried stone and 6F5 as recycled, while others use the terms the other way around.