Similar International Standards
ASTM C615/C615M-18ASTM International (US)
HighCurrent
Standard Specification for Granite Dimension Stone
Covers physical property requirements for granite used as dimension stone in construction.
EN 12058:2015CEN (European Committee for Standardization)
MediumCurrent
Natural stone products - Slabs for floors and stairs - Requirements
Specifically covers granite slabs for flooring and stairs, a key application within IS 1136 scope.
EN 1469:2015CEN (European Committee for Standardization)
MediumCurrent
Natural stone products - Slabs for cladding - Requirements
Focuses on granite slabs for external and internal cladding, overlapping with IS 1136's general slab specification.
EN 1341:2012CEN (European Committee for Standardization)
LowCurrent
Slabs of natural stone for external paving - Requirements and test methods
Specifies requirements for paving applications, a more specialized use-case than the general scope of IS 1136.
Key Differences
≠The minimum required physical properties differ. For example, IS 1136 requires a minimum compressive strength of 100 MPa, while ASTM C615 requires a significantly higher 131 MPa.
≠Test methodologies are different. IS 1136 references other Indian Standards (e.g., IS 13630 for properties), whereas international standards reference their own series (e.g., ASTM C-series tests, EN test methods).
≠The specification for abrasion resistance uses different metrics. IS 1136 specifies a maximum wear in mm, while ASTM C615 specifies a minimum Abrasive Hardness value (Ha), making direct comparison difficult.
≠European (EN) standards are often application-specific (e.g., for flooring, cladding, paving), whereas IS 1136 and ASTM C615 are broader material specifications for granite in general.
≠Dimensional tolerance for thickness in EN standards is often specified in classes (e.g., T1, T2), allowing for different levels of precision, while IS 1136 provides fixed tolerance values based on nominal thickness.
Key Similarities
≈All standards evaluate a core set of physical properties to determine suitability, including water absorption, density, compressive strength, and flexural strength (modulus of rupture).
≈The geological definition of granite as a visibly granular, crystalline igneous rock is consistent across all standards.
≈All standards require that slabs and tiles be generally free from defects like cracks, seams, and starts that would compromise structural integrity or aesthetic appearance.
≈The importance of surface finish (e.g., polished, honed, flamed) is recognized in all standards, requiring it to be uniform and as agreed upon with the purchaser.