Can masonry cement be used for RCC structures?

No, it is strictly intended for masonry mortars and plastering.

Why is water retention important in masonry cement?

It prevents the mortar from drying out too quickly when placed against porous masonry units like bricks, ensuring proper hydration and bond strength.

IS 1344

: 1981

Masonry Cement - Specification

CurrentSpecializedSpecificationMaterials Science · Cement

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This standard lays down the requirements for manufacture, physical properties, and chemical properties of masonry cement intended to be used primarily for masonry mortars and plastering.

Specifies requirements for masonry cement, designed for use in masonry mortars and plasters.

Quick Reference Values

Minimum 7-day compressive strength2.5 MPa

Minimum 28-day compressive strength5.0 MPa

Minimum initial setting time90 minutes

Maximum final setting time24 hours

Maximum Le Chatelier expansion (Soundness)10 mm

Maximum Autoclave expansion (Soundness)1.0 %

Minimum water retention60 %

Practical Notes

Masonry cement is specially formulated to provide high workability and water retention compared to ordinary Portland cement, making it ideal for bricklaying and plastering.

It must NEVER be used for structural reinforced concrete (RCC) works like beams, columns, or slabs due to its significantly lower compressive strength.

Only sand and water need to be added at the site to prepare the masonry mortar.