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IS 6072:1971 is the Indian Standard (BIS) for autoclaved reinforced cellular concrete wall slabs. This standard specifies the requirements for materials, dimensions, physical properties, and testing of autoclaved reinforced cellular concrete wall slabs. It covers various grades based on density and compressive strength, intended for use as prefabricated wall panels in building construction.
EN 12602:2016CEN (European Committee for Standardization), Europe
HighCurrent
Prefabricated reinforced components of autoclaved aerated concrete
Covers requirements and test methods for reinforced AAC wall, floor, and roof panels.
ASTM C1693-21ASTM International, USA
HighCurrent
Standard Specification for Autoclaved Aerated Concrete (AAC)
Specifies requirements for both non-reinforced and reinforced AAC panels, including wall panels.
AS 5146.2:2018Standards Australia, Australia
HighCurrent
Reinforced autoclaved aerated concrete - Part 2: Panels
Provides requirements for the design and specification of reinforced AAC panels for walls and floors.
JIS A 5416:2016JSA (Japanese Standards Association), Japan
MediumCurrent
Autoclaved lightweight aerated concrete panels
Covers autoclaved lightweight concrete panels, including reinforced types for walls and floors.
Key Differences
≠IS 6072 is prescriptive with basic load criteria, whereas modern standards like EN 12602 are performance-based and integrate with comprehensive structural design codes (e.g., Eurocode 2) for analysis.
≠Corrosion protection in IS 6072 is a simple cement slurry. International standards (e.g., ASTM C1693, EN 12602) mandate factory-applied, performance-tested anti-corrosion coatings (e.g., polymer-modified slurry or epoxy).
≠Modern standards specify and require testing for a wider range of performance characteristics, such as fire resistance ratings, thermal conductivity, and acoustic insulation, which are not detailed in IS 6072:1971.
≠International standards use a system of density and compressive strength classes (e.g., D600, AAC 4 in EN 12602) for precise specification, while IS 6072 uses a more limited two-grade system.
Key Similarities
≈All standards are based on the same fundamental material: a mix of cementitious binder, fine siliceous material, water, and an expansion agent, cured via autoclaving.
≈The basic product concept is identical: a factory-made, reinforced, lightweight concrete slab intended for use as a wall element.
≈All standards require steel reinforcement to be embedded within the panels to resist handling, transport, and in-service flexural stresses.
≈All standards define and specify permissible dimensional tolerances for length, width, thickness, and squareness to ensure proper assembly on site.
Parameter Comparison
Parameter
IS Value
International
Source
Dry Density Range
551 - 750 kg/m³ (Grades I & II)
Typically 400 - 800 kg/m³ organized in classes (e.g., D500, D600, D700)
EN 12602:2016
Compressive Strength (Typical)
3.0 - 4.0 N/mm² (average cube strength for Grades I & II)