What comes off the plants
Which product you need depends on the layer you are building.
- Products
- 7
- MoRTH GSB
- 401
The short version
A road is built in layers
Which is why a single supplier for the whole section is worth something. Change the decks, change the product, same weighbridge and the same convoy.
Bituminous surfacing
BC and DBM, laid by the contractor
Wet Mix Macadam
The base course. Carries the load.
Granular Sub-base
Spreads load and drains the pavement.
Sub-grade
Compacted formation. Not a supplied material.
Existing ground
Product sheets
Seven products, one plant
- GSB
01
Granular Sub-base
First granular layer above the sub-grade
The grading matters more here than anywhere else in a road: too many fines and it holds water, too few and it will not compact.
- Spec
- MoRTH Clause 401, Grading I to VI
- Used for
- Highway sub-base · Haul roads · Yard and hardstanding · Working platforms
- WMM
02
Wet Mix Macadam
Base course, directly under the bituminous layers
Laid over GSB and under DBM, it is the layer that carries the load and the layer that shows first when a road starts to fail.
- Spec
- MoRTH Clause 406
- Used for
- Highway base course · Service roads · Widening works · Industrial pavements
- 40mm
03
40mm Aggregate
Lean concrete and drainage
- Used for
- Dry lean concrete · Drainage layers · Soling · Mass concrete
- 20mm
04
20mm Aggregate
Bituminous macadam and structural concrete
Shape matters as much as size: flaky aggregate off a badly set crusher fails the flakiness index no matter how clean the grading looks.
- Used for
- DBM · Structural concrete · Precast · Pavement quality concrete
- 10mm
05
10mm Aggregate
Wearing course and finer concrete
- Used for
- Bituminous concrete · Surface dressing · Slab and beam concrete · Paver blocks
- Dust
06
Crusher Dust & Manufactured Sand
Fine aggregate and filler
Where the specification allows it, washed and graded dust replaces river sand in concrete and in block work, which matters more every year that sand mining gets harder.
- Used for
- Fine aggregate in concrete · Paver bedding · Block and brick manufacture · Filling and levelling
- Boulder
07
Boulder & Rubble
Protection works
Shot rock sized but not crushed. Sold as-raised for protection work, and to third-party crushers as feed.
- Used for
- Pitching and revetment · Gabion filling · Retaining works · Crusher feed
If the grading you need is not on this page, ask anyway. The plants are three-stage with adjustable screen decks, so most specifications are a matter of resetting the decks rather than finding a different supplier.
Get a rate
Tell us the layer and the volume
Four things and we can quote it. Send it before 6pm on a working day and you will hear back the same day.
Where · What · How much a month · When