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Our aim is to ensure that our customers receive the right mix for the job. Ready-mixed concrete is produced to the British Standard BS8500 which is designed to assist users in specifying the correct mix for their particular project. Designated concretes are quality assured concretes that conform to a specification detailed in BS 8500. These concretes have been selected by governmental bodies and industry to be fit for their intended end uses and they can only be supplied by ready-mixed concrete producers who have third-party product conformity certification. A QSRMC or BSI logo on the delivery ticket provides this confirmation. Purchasers can therefore be confident that the concrete will be delivered as specified and ordered.
The table below has been extracted following from BS 8500. Simply identify your application in the left column and read across to select a suitable type of concrete. Please call one of our sales team if you require any further advice.
Some soils are potentially aggressive to concrete and it is important to take this into account. If there is no professional advisor, the local building control officer may be able to advise whether the local soil contains sulphates and if so, how aggressive it is. Specify the nominal maximum aggregate size only if it needs to be different from 20mm. Options, if available, will be 40 or 10mm.
- Agricultural applications (see below)
- Click here for general applications
- Click here for floor screed
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Application |
Designated Concrete |
Recommended consistence class (nominal slump*) |
Concrete in or on non-aggressive soilsDC -1
Un-reinforced foundations
Reinforced foundations
Oversite concrete
Blinding under slabs
Mass concrete (non-structural)
Column bases
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GEN 1
RC 35
GEN 1
GEN 1
GEN 1
RC 35
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S2
S2
S2
S2
S2
S2
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DC-2
DC-2z
DC-3
DC-3z
DC-4
DC-4m |
FND 2
FND 2z
FND 3
FND 3z
FND 4
FND 4m
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S3
S3
S3
S3
S3
S3
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Floors and roads
Livestock floors
Stable floors
Crop store floors
Floors (and walls) for silage
Sugar beet storage areas
Workshop floors and floors subject to small-wheeled forklift trucks
Brewers'grain stores
Mushroom sheds
Toppings for floors such as parlours and dairies
Floors (and walls) for manure and slurry stores
External yards and roads subject even to occasional
de-icing salts |
RC 35
RC 45
RC 35
RC 45
RC 40
RC 40
RC 45
RC 40
RC 45
RC 40
PAV 1 |
S2
S2
S2
S2
S2
S2
S2
S2
S2
S2
S2 |
Other applications
Cavity infill to reinforced masonry |
RC 40 |
S3 |
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Notes
1. S3 slump class concrete can be used in large foundations and should be used in trench fill foundations.
2. When concreting on steep slopes, S2 at 5Omm slump target may be used but this will require vibrating equipment to compact it adequately. On flat surfaces, S3 slump class concrete may be specified if the concrete is to be compacted by hand tamping.
3. RC 35/45 is similar to concrete type C35A and meets the requirements of BS 8007 Code of practice for design of concrete structures for retaining aqueous liquids demanded by the Control of Pollution Regulations 1991 and this concrete should be specified for any application that is to be used for holding/storing liquids.
4. Where the concrete is subject to even occasional de-icing salts, designated concrete PAV1 is recommended.
5. What used to be known as Workability is now referred to as CONSISTENCE. New consistence classes have been introduced as follows:
Slump Class Target slump mm
S1 20
S2 70
S3 120
S4 170
S5 220 plus
Note: Slump is now specified and measured to the nearest 10 mm
For further reading refer to:
1. BS EN 206-1: Concrete: Specification, performance, production and conformity
BS 8500-1 : Method of specifying and guidance for the producer
BS 8500-2 : Specification for constituent materials and concrete.
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| The Hills Group does its best to ensure that any advice, recommendations or information given is accurate. However, no liability of any kind (including liability for negligence) is accepted in this respect by the company, its servants or agents. |
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© Hills Group 2009
Disclaimer
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