What does '53 Grade' signify?

It indicates a minimum characteristic compressive strength of 53 MPa at 28 days for standard cement-sand mortar cubes, tested as per IS 4031 (Part 6).

What is the minimum initial setting time for 53 Grade cement?

The minimum initial setting time is 30 minutes, as specified in Table 2.

Is 53 Grade OPC suitable for plastering?

It is generally not recommended for plastering or masonry work as its high strength can cause shrinkage cracks and result in a brittle mortar. Lower grade cements are preferred.

What is the maximum allowed Le Chatelier expansion?

The maximum expansion is 10 mm, which ensures the soundness of the cement (Table 2).

IS 12269

: 1987

Ordinary Portland Cement, 53 Grade - Specification

SupersededFrequently UsedSpecificationBIMMaterials Science · Cement

Superseded by IS 269:2015

Download PDF BIS Portal Google

This standard provides the manufacturing and testing specifications for 53 Grade Ordinary Portland Cement (OPC). It covers the chemical and physical requirements, including strength, setting time, and soundness, for this high-strength cement.

Specifies requirements for 53 grade ordinary portland cement; commonly referenced for older projects.

Quick Reference Values

Min. Compressive Strength (3 days)27 MPa

Min. Compressive Strength (7 days)37 MPa

Min. Compressive Strength (28 days)53 MPa

Min. Initial Setting Time30 minutes

Max. Final Setting Time600 minutes

Max. Soundness (Le Chatelier)10 mm

Min. Specific Surface (Fineness)225 m²/kg

Practical Notes

53 Grade cement has a higher heat of hydration than lower grades, making it less suitable for mass concreting works due to the risk of thermal cracking.

The '53' denotes the minimum 28-day compressive strength of 53 MPa for standard mortar cubes, not concrete.

Due to its high early strength gain, it is ideal for precast concrete production and structures requiring early de-shuttering.