Bureau of Indian Standards (BIS) Codes & Specifications
The Bureau of Indian Standards (BIS) has established comprehensive standards for ready-mixed concrete production, testing, and quality control. Kalokhe RMC strictly adheres to all relevant IS codes to ensure superior quality and compliance.
The primary standard governing all aspects of ready-mixed concrete production and delivery.
Fundamental standard for concrete design and construction practices.
Methods for sampling and testing fresh concrete properties.
Comprehensive methods for testing hardened concrete strength.
| Grade | Compressive Strength (MPa) | Applications | Mix Type |
|---|---|---|---|
| M10 | 10 MPa @ 28 days | Leveling course, PCC works | Nominal Mix |
| M15 | 15 MPa @ 28 days | Plain concrete, foundations | Nominal Mix |
| M20 | 20 MPa @ 28 days | Residential structures, slabs | Design Mix |
| M25 | 25 MPa @ 28 days | Commercial buildings, beams | Design Mix |
| M30 | 30 MPa @ 28 days | Multi-storey buildings, columns | Design Mix |
| M35 | 35 MPa @ 28 days | Heavy load structures | Design Mix |
| M40 | 40 MPa @ 28 days | High-rise buildings, bridges | Design Mix |
| M45-M60 | 45-60 MPa @ 28 days | High-performance applications | Design Mix |
The letter 'M' in grade designation stands for 'Mix', and the number represents the characteristic compressive strength of 150mm cube at 28 days, expressed in MPa (N/mm²). For example, M25 means the concrete mix should achieve a minimum characteristic compressive strength of 25 MPa after 28 days of curing.
IS 269:2015
Ordinary Portland Cement
IS 383:2016
Coarse and Fine Aggregates
IS 2386 (Part 1-8)
Methods of Test for Aggregates
IS 9103:1999
Concrete Admixtures Specification
IS 456:2000 (Annex D)
Admixture Usage Guidelines
IS 6925:2001
Accelerating Admixtures
We maintain strict adherence to all BIS standards and hold certifications from ISO 9001:2015, QCI RMCPS, and BIS. Our quality control processes ensure every batch of concrete meets or exceeds the specified standards.