Burnt Clay Fly Ash Building Bricks — IS 13757 (1993) Testing

BIS currently lists IS 13757:1993 as Burnt Clay Fly Ash Building Bricks — Specification. BIS’s current Program of Work shows the standard as reaffirmed in September 2021 with two amendments.

The standard classifies burnt clay fly ash bricks according to their average compressive strength. Current BIS laboratory scope listings cover classes including 3.5, 5.0, 7.5, 10, 12.5, 15, 17.5, 20, 25 and 30.

The general quality requirement helps verify that bricks are properly manufactured and suitable for construction. It covers characteristics such as uniformity, appearance and freedom from visible defects specified by the standard.

Yes. BIS laboratory scopes specifically list testing for dimensions under Clause 6.1 and tolerances under Clause 6.2. These checks help confirm that the manufactured bricks conform to the prescribed dimensional requirements.

Water absorption is a specified physical requirement under Clause 7.2 of IS 13757:1993. BIS laboratory listings currently include water absorption testing as part of the testing scope for burnt clay fly ash building bricks.

Yes. Efflorescence testing is covered under Clause 7.3. The test helps determine the presence and extent of soluble salt deposits that may appear on the surface of bricks after exposure to moisture.

Marking requirements are included under Clause 9 of the standard. Compliant identification and marking help communicate the applicable standard and relevant product information for quality and conformity purposes.

Yes. BIS’s Laboratory Information Management System currently lists laboratories with testing scopes for IS 13757:1993, including dimensions, tolerances, compressive strength, water absorption, efflorescence and marking.