IS 14893:2019 is the Indian Standard (BIS) for ready-mixed concrete - specification. This standard specifies the requirements for production, quality control, and supply of ready-mixed concrete (RMC). It covers constituent materials, ordering information, manufacturing tolerances, transport, delivery, sampling, and conformity criteria to ensure quality for construction projects.
Covers the requirements for ready-mixed concrete (RMC) delivered to the purchaser at the site in a plastic state.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Maximum Delivery Time | 2 hours from the time of loading | 90 minutes or before 300 drum revolutions, whichever occurs first | ASTM C94/C94M |
| Slump Tolerance (Specified Slump 50-100 mm) | ± 25 mm | ± 1.5 in. [± 38 mm] (for specified slump > 4 in.) | ASTM C94/C94M |
| Concrete Temperature at Delivery | Generally between 5°C and 40°C | Limits specified based on section size and weather, e.g., max 95°F [35°C] for hot weather | ASTM C94/C94M |
| Sampling Frequency (Compressive Strength) | 1 sample per 50 m³ or part thereof, for each grade | 1 sample per 150 yd³ [approx. 115 m³] of each class | ASTM C94/C94M |
| Strength Grade Nomenclature | M## (e.g., M30 for 30 MPa cube strength) | C##/## (e.g., C25/30 for 25 MPa cylinder / 30 MPa cube strength) | BS EN 206 |
| Minimum Cement Content (Moderate Exposure) | 300 kg/m³ (for M20, as per IS 456) | No absolute minimum specified; defined by performance and exposure class requirements | BS EN 206 |
| Water Addition at Job Site | Permitted on arrival to achieve required slump, provided max w/c ratio is not exceeded. | Permitted if slump is below specified, and added water does not exceed design limit. | ASTM C94/C94M |