IS 2542 : 1999

Methods of Test for Gypsum Plaster, Concrete and Products

ASTM C472
CurrentSpecializedTesting MethodMaterials Science · Building Limes and Gypsum Products
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Summary

IS 2542 provides test methods for gypsum plaster and gypsum products. It is a multi-part standard covering setting time, strength, water absorption, and other properties. Referenced by all gypsum product specifications in India.

Test methods for gypsum plaster and gypsum-based products including setting time, compressive strength, water absorption, and other physical properties.

Practical Notes
! Setting time of gypsum plaster is temperature-sensitive — conduct tests at 27±2°C as specified.
! POP (Plaster of Paris) sets very quickly (5-15 min) — retarders like slaked lime are added to increase working time.
! Water-to-powder ratio is critical for consistent results — follow IS 2542 ratios exactly.
Cross-Referenced Codes
IS 2095:2000Gypsum Plaster Boards, Part 1: Plain Gypsum P...
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IS 2547:2000gypsum building plaster, Part 1: Excluding pr...
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IS 8272:1984gypsum plaster for use in the manufacture of ...
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gypsumplastergypsum boardPOPtestingsetting time