ASTM C140

Full Name

ASTM C140 – Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units

Scope

ASTM C140 provides various testing procedures commonly used for evaluating characteristics of concrete masonry units and related concrete units. These units include concrete masonry units (CMUs), concrete and calcium silicate brick, segmental retaining wall units, concrete paving units, roof pavers, and other related units.

The scope of ASTM C140 encompasses:

  • Sampling: it provides guidelines for obtaining representative samples of the units to ensure that the test results accurately reflect the properties of the entire lot or production run.
  • Testing methods: it details various test methods to evaluate the following characteristics of the units:
    • Dimensions: measurement of length, width, height, and other relevant dimensions.
    • Compressive strength: determination of the unit’s ability to withstand compressive loads.
    • Absorption: measurement of the amount of water the unit can absorb.
    • Unit weight (density): determination of the unit’s mass per unit volume.
    • Moisture content: measurement of the amount of moisture present in the unit.
    • Flexural bond strength: evaluation of the bond strength between the unit and mortar.
    • Ballast weight: specific to concrete ballast block, determination of the unit’s mass.
  • Applicability: not all test methods are applicable to all unit types. The standard specifies which tests are appropriate for each specific type of unit.

By adhering to ASTM C140, manufacturers and users of concrete masonry units can ensure the quality and performance of these units, leading to safer and more durable construction projects.

ASTM C140 Accredited Laboratory

Applied Testing & Geosciences, LLC is accredited for performing tests using the ASTM C140 standard.

Contact us today to learn more about our testing capabilities and how we can support your business.

Resources

Keywords

concrete masonry units; testing; sampling; compressive strength; absorption; dimensions; moisture content; flexural bond strength

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