About M15 Ready Mix Concrete
M15 Ready Mix Concrete (15 N/mm² at 28 days) is used for general PCC works, compound wall foundations, non-critical structural members, and applications where a slightly stronger lean mix than M10 is required. M15 is commonly specified by structural consultants for PCC base courses under RCC foundations, plinth protection, and certain industrial flooring applications in Tamil Nadu.
Delivered by transit mixer to your construction site across Chennai, Chengalpattu, Kanchipuram, Thiruvallur, and all of Tamil Nadu. Minimum order 3 m³. GST invoice on every pour.
Applications
PCC Foundation
Under-raft foundation PCC
Compound Wall
Compound wall footing
Plinth Filling
Plinth area infill
Industrial Floor
Light industrial PCC floors
Retaining Wall
Non-critical retaining
Mix Design Parameters (ISI:456)
| Grade | M15 |
| Characteristic Strength | 15 N/mm² (15 MPa) at 28 days |
| Standard | ISI:456 |
| Mix Designation | Nominal Mix 1:2:4 |
| Cement Content (Min) | 250 kg/m³ |
| Water-Cement Ratio (Max) | 0.55 |
| Slump Range | 75 – 100 mm |
| Aggregate Size | 20mm MSA |
| Application Type | PCC / Light Structural |
| Minimum Order | 3 m³ |
Why Choose RMC M15?
- ✓Better strength than M10 for compound wall footings
- ✓Batching plant controlled — no site variability
- ✓Reduces time vs on-site manual mixing
- ✓ISI:456 compliant for PCC and nominal mix works
- ✓Consistent slump for easy pumping and pouring
Important Notes
⚠️ M15 is for PCC and non-critical structural use only. For RCC slabs, beams, columns, and foundations carrying structural loads, ISI:456 Table 5 mandates minimum M20.