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IS 11263:1985 is the Indian Standard (BIS) for cylinder measures for determination of air content of hydraulic cement mortar. This standard lays down the specifications for the material, dimensions, and construction of the cylinder measure used for determining the air content of hydraulic cement mortar. It defines the required capacity of 400 ml and other dimensional tolerances to ensure consistency and accuracy in testing.
Specification for cylinder measures for determination of air content of hydraulic cement mortar
Overview
Status
Current
Usage level
Specialized
Domain
Materials Science — Cement, Concrete, Aggregates and RCC
Consolidated list per BIS. For the text of each amendment, refer to the BIS portal link above.
cementmortar
International Equivalents
Similar International Standards
ASTM C185-20ASTM International, USA
HighCurrent
Standard Test Method for Air Content of Hydraulic Cement Mortar
Specifies the apparatus (a 400 mL measure) for the gravimetric determination of air content in hydraulic cement mortar.
EN 1015-7:1999European Committee for Standardization (CEN), Europe
MediumCurrent
Methods of test for mortar for masonry - Part 7: Determination of air content of fresh mortar
Specifies methods for determining air content in fresh mortar, but the specified vessel (1 litre) for the unit weight method differs in size.
AASHTO T 137-05American Association of State Highway and Transportation Officials, USA
HighCurrent
Standard Method of Test for Air Content of Hydraulic Cement Mortar
This test method is technically identical to ASTM C185, specifying the same 400 mL measure for the apparatus.
Key Differences
≠IS 11263 is a standalone specification for the apparatus only, whereas ASTM C185 and EN 1015-7 are complete test methods that include the apparatus specification as one section.
≠While IS 11263 and ASTM C185 specify a 400 ml measure, the European equivalent (EN 1015-7, referencing EN 1015-6) specifies a larger 1 litre (1000 ml) vessel for the comparable unit weight method.
≠There are minor differences in the dimensional tolerances. For instance, the internal diameter in IS 11263 is 75.0 ± 1.5 mm, while in ASTM C185 it is 76.2 ± 1.3 mm.
≠IS 11263 specifies a minimum base thickness of 6 mm, whereas ASTM C185 does not specify a value, only that the measure be 'sufficiently rigid'.
Key Similarities
≈The primary purpose is identical: to specify a rigid, cylindrical metal measure for determining the air content of fresh hydraulic cement mortar via the gravimetric (unit weight) method.
≈The specified capacity of 400 ± 1 ml in IS 11263 is identical to the capacity required by ASTM C185, making the apparatus functionally interchangeable between these two standards.
≈All standards require the measure to be made from a corrosion-resistant metal not readily attacked by cement paste, with brass and stainless steel being common examples.
≈The general construction requirements are consistent, demanding a smooth interior finish, a plane top rim, and a flat, stable base perpendicular to the cylinder's axis.
Parameter Comparison
Parameter
IS Value
International
Source
Capacity
400 ± 1 ml
400 ± 1 mL
ASTM C185-20
Internal Diameter
75.0 ± 1.5 mm
76.2 ± 1.3 mm (3.0 ± 0.05 in.)
ASTM C185-20
Internal Height
90.0 ± 1.5 mm
88.1 ± 1.3 mm (3.47 ± 0.05 in.)
ASTM C185-20
Wall Thickness (Min)
3 mm
3.2 mm (1/8 in.)
ASTM C185-20
Base Thickness (Min)
6 mm
Not specified; must be 'sufficiently rigid'
ASTM C185-20
Material
Corrosion-resisting metal (e.g., brass, bronze, stainless steel)
Metal resistant to corrosion by cement paste (e.g., brass)
ASTM C185-20
Alternative Capacity (European Standard)
400 ml
1000 cm³ (1 litre)
EN 1015-7:1999
⚠ Verify details from original standards before use
Key Values5
Quick Reference Values
Nominal Capacity400 ml
Capacity Tolerance± 4 ml
Internal Diameter75 ± 1 mm
Internal Height90 ± 1 mm
Minimum Wall Thickness4.5 mm
Tables & Referenced Sections
Key Tables
No tables data
Key Clauses
Clause 2: Capacity
Clause 3: Dimensions
Clause 4: Material and Manufacture
Clause 5: Marking
Frequently Asked Questions3
What is the specified capacity of the cylinder measure?+
The capacity is 400 ± 4 ml as per Clause 2.1.
What are the required internal dimensions of the measure?+
The internal diameter should be 75 ± 1 mm and the internal height should be 90 ± 1 mm (Clause 3.1).
What material should the cylinder measure be made of?+
It should be made of metal not readily attacked by cement paste or mortar, such as brass or stainless steel (Clause 4.1).