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Get the Right Mix with Newark Concrete
Use the information in the table below to find out the correct concrete mix for all types of applications.
Guide to the selection of designated and standard mixes
| Application | Designated mix |
Standard mix |
Recommended workability (nominal slump) |
| Foundations | |||
| Blinding and mass concrete fill | GEN 1 |
ST2 |
75 |
| Strip footings | GEN 1 |
ST2 |
75 |
| Mass concrete foundations | GEN 1 |
ST2 |
75 |
| Trench fill foundations | GEN 1 |
ST2 |
125 |
| Reinforced foundations | RC 35 |
N/A |
75 |
| Foundations in Class 2 sulfate conditions | FND 2 |
N/A |
75 |
| Foundations in Class 3 sulfate conditions | FND 3 |
N/A |
75 |
| Foundations in Class 4A sulfate conditions | FND 4A |
N/A |
75 |
| Foundations in Class 4B sulfate conditions | FND 4B |
N/A |
75 |
| General applications | |||
| Kerb bedding and backing | GEN 1 |
ST1 |
Very low (nominal 10) |
| Drainage works to give immediate support | GEN 1 |
ST2 |
Very low (nominal 10) |
| Other drainage works | GEN 1 |
ST2 |
50 |
| Oversite below suspended slabs | GEN 1 |
ST2 |
75 |
| Floors | |||
| House floors with no embedded metal: - Permanent finish to be added, e.g. a screed or floating floor |
GEN 1 |
ST2 |
75 |
| - No permanent finish to be added, e.g. carpeted | GEN 2 |
ST3 |
75 |
| Garage floors with no embedded metal | GEN 3 |
ST4 |
75 |
| Wearing surface: light foot and trolley traffic | RC 30 |
ST4 |
50 |
| Wearing surface: general industrial | RC 40 |
N/A |
50 |
| Wearing surface: heavy industrial | RC 50 |
N/A |
50 |
| Paving | |||
| House drives, domestic parking and external parking | PAV 1 |
N/A |
75 |
| Heavy-duty external paving | PAV2 |
N/A |
50 |
| Other reinforced and prestressed concrete applications | |||
| Reinforced or prestressed concrete: mild exposure |
RC 30 |
N/A |
75 |
| Reinforced or prestressed concrete: moderate exposure |
RC 35 |
N/A |
75 |
| Reinforced or prestressed concrete: severe exposure |
RC 40 |
N/A |
75 |
| Reinforced or prestressed concrete: most severe exposure |
RC 50 |
N/A |
75 |