ASTM C140-05a

ASTM C140-05a - 15.11.2005

1. Scope

1.1 These test methods cover the sampling and testing of concrete masonry units for dimensions, compressive strength, absorption, unit weight (density), and moisture content. Flexural load testing and ballast weight determination of concrete roof pavers are also covered.

Note 1—The testing laboratory performing these test methods should be evaluated in accordance with Practice C 1093.

1.2 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

E6-25	Standard Terminology Relating to Methods of Mechanical Testing
C1372-24	Standard Specification for Dry-Cast Segmental Retaining Wall Units
D6684-18	Standard Specification for Materials and Manufacture of Articulating Concrete Block (ACB) Systems
C1232-26a	Standard Terminology for Masonry (Includes all amendments and changes 8/20/2026).
E4-24	Standard Practices for Force Calibration and Verification of Testing Machines
C1634-25	Standard Specification for Dry-Cast Concrete Facing Brick and Other Concrete Masonry Facing Units
C1552-23	Standard Practice for Capping Concrete Masonry Units, Related Units and Masonry Prisms for Compression Testing
C1491-19	Standard Specification for Concrete Roof Pavers (Withdrawn 2023)
C55-25	Standard Specification for Dry-Cast Concrete Building Brick
C73-23	Standard Specification for Calcium Silicate Brick (Sand-Lime Brick)
C936/C936M-26	Standard Specification for Solid Concrete Interlocking Paving Units
C1093-25	Standard Practice for Accreditation of Testing Agencies for Masonry
C90-24a	Standard Specification for Dry-Cast Loadbearing Concrete Masonry Units (Includes all amendments and changes 1/20/2025).
C129-26	Standard Specification for Dry-Cast Nonloadbearing Concrete Masonry Units
C143/C143M-26b	Standard Test Method for Slump of Concrete (Includes all amendments and changes 8/6/2026).
C1319-23a	Standard Specification for Concrete Grid Paving Units (Includes all amendments and changes 12/20/2023).