What is the primary application of sulphur type chemical resistant mortar?

It is used for bonding chemical and acid-resistant bricks/tiles in industrial flooring and storage tanks exposed to acidic conditions.

How is sulphur mortar applied at the site?

It is an un-plasticized or plasticized solid that must be melted in a heating pot and poured hot directly into the joints.

What is the temperature limit for using sulphur mortar?

The maximum service temperature for sulphur type mortars is generally limited to 90°C.

IS 4832

: 2000

chemical resistant mortars, Part III: Sulphur type

CurrentSpecializedSpecificationMaterials Science · Flooring, Wall Finishing and Roofing

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This standard prescribes the requirements and methods of sampling and test for sulphur-type chemical resistant mortars used for bonding chemical resistant bricks and tiles. It covers material composition, physical properties, and testing criteria to ensure durability in acidic industrial environments.

chemical resistant mortars, Part III: Sulphur type

Quick Reference Values

Maximum service temperature90°C

Compressive strength (min)28 N/mm²

Tensile strength (min)2.8 N/mm²

Flexural strength (min)8.5 N/mm²

Moisture absorption (max)1.0 percent by mass

Practical Notes

Sulphur mortars must be heated and poured hot; strict temperature control (typically around 130-140°C) is required to prevent thickening or burning of the sulphur.

Not recommended for use in strong alkaline conditions or environments with strong oxidizing agents like concentrated nitric acid.

The service temperature of the mortar must not exceed 90°C, as sulphur melts near 115-120°C.