Similar International Standards
ASTM C936 / C936M-23ASTM International, USA
MediumCurrent
Standard Specification for Solid Concrete Interlocking Paving Units
Covers requirements and testing for paving units, but specifically for Portland cement concrete, not lime-pozzolana.
BS EN 1338:2003+A1:2013BSI / CEN, UK / Europe
MediumCurrent
Concrete paving blocks - Requirements and test methods
Specifies requirements for cement-based concrete paving blocks, representing the closest functional equivalent.
AS/NZS 4455.2:2010Standards Australia / Standards New Zealand, Australia / New Zealand
MediumCurrent
Masonry units, pavers, flags and segmental retaining wall units - Pavers and flags
Details requirements for concrete pavers, serving a similar application but differing in material binder technology.
SANS 1058:2021SABS (South African Bureau of Standards), South Africa
MediumCurrent
Concrete paving units
Defines requirements for precast concrete paving blocks, but does not address lime-pozzolana binders.
Key Differences
≠The primary binder in IS 10359 is a lime-pozzolana system, which has slow strength development. International equivalents are exclusively based on Ordinary Portland Cement (OPC), which provides high early strength.
≠Compressive strength requirements in IS 10359 are significantly lower (2.0 to 10.0 N/mm²) compared to international standards like ASTM C936, which mandates an average strength of at least 55 N/mm² (8000 psi).
≠IS 10359 specifies a maximum water absorption of 10%, whereas modern standards like ASTM C936 require a much lower absorption rate, typically below 5%, for enhanced durability and frost resistance.
≠The Indian standard includes detailed guidance on the 'use' of blocks, including sub-base preparation and laying patterns. In contrast, many international standards (e.g., ASTM C936) are product specifications, with usage guidelines published in separate documents by industry bodies like the ICPI.
≠Curing in IS 10359 requires a long period of moist curing (28 days) to facilitate the slow pozzolanic reaction. Cement-based blocks under international standards can utilize accelerated curing methods (like steam) to meet strength requirements much faster.
Key Similarities
≈All standards cover precast, solid block units intended for the construction of paved surfaces for pedestrian and vehicular traffic.
≈Compressive strength and water absorption are universally adopted as the primary performance indicators for assessing the quality and durability of the paving blocks.
≈All standards specify strict dimensional tolerances for length, width, and thickness to ensure a good fit, proper interlocking, and a uniform paved surface.
≈The fundamental principles of test methods, such as applying a compressive load across the block's surface until failure or measuring weight gain after water immersion, are conceptually similar across all standards.