What happened to IS 8112 and IS 12269?

They were withdrawn and integrated into IS 269:2015, which now comprehensively covers 33, 43, and 53 grade OPC in a single document.

What is the minimum initial setting time for OPC?

30 minutes for all grades (Table 2).

What is the maximum final setting time for OPC?

600 minutes (10 hours) for all grades (Table 2).

What is the fineness requirement for OPC?

The specific surface must not be less than 225 m²/kg when tested by the Blaine's air permeability method (Table 2).

IS 269

: 2015

Ordinary Portland Cement - Specification

CurrentEssentialSpecificationMaterials Science · Cement

Download PDF BIS Portal Google

IS 269:2015 is the unified specification for Ordinary Portland Cement (OPC). It consolidates the previously separate codes for 33, 43, and 53 grades into a single standard, outlining the chemical composition, physical properties, strength requirements, and testing guidelines for OPC used in general construction.

Specifies requirements for ordinary portland cement (OPC) of 33, 43, and 53 grades for general construction purposes.

Quick Reference Values

Fineness (minimum specific surface)225 m²/kg

Initial setting time (minimum)30 minutes

Final setting time (maximum)600 minutes

Soundness (Le-Chatelier expansion, maximum)10 mm

Soundness (Autoclave expansion, maximum)0.8%

28-day Compressive Strength (33 Grade)33 MPa minimum

28-day Compressive Strength (43 Grade)43 MPa minimum

28-day Compressive Strength (53 Grade)53 MPa minimum

Practical Notes

This 2015 revision is extremely important as it unified IS 269, IS 8112, and IS 12269. Do not use the old individual codes for specifying 43 or 53 grade cement.

When purchasing or accepting material on site, ensure the manufacturer's bag specifies the actual grade (33, 43, or 53) alongside the IS 269 marking.

For testing the chemical and physical properties specified in this code, engineers must refer to the methods prescribed in the multi-part codes IS 4031 and IS 4032.