【国外标准】 Standard Test Methods for Sampling and Testing Concrete Masonry Units and Related Units

4.1 These test methods provide general testing requirements for application to a broad range of concrete products. Those general testing requirements are included in the body of this standard.NOTE 2: Consult manufacturer, supplier, product specifications, or other resources for more specific measurement or testing guidelines for those products not addressed with the annex of this standard.4.2 These test methods provide specific testing requirements in two distinct sections, the requirements applicable to all units covered by these test methods and those applicable to the specific unit types. The requirements applicable to all units are included in the body of these test methods and those applicable to the specific unit types are included within the annexes.1.1 These test methods provide various testing procedures commonly used for evaluating characteristics of concrete masonry units and related concrete units. Methods are provided for sampling, measurement of dimensions, compressive strength, absorption, unit weight (density), moisture content, flexural load, and ballast weight. Not all methods are applicable to all unit types, however.1.2 Specific testing and reporting procedures are included in annexes to these test methods for the following specific unit types:Annex A1—Concrete masonry units  (Specifications C90, C129)Annex A2—Concrete and calcium silicate brick  (Specifications C55, C73, C1634)Annex A3—Segmental retaining wall units (Specification C1372)Annex A4—Concrete interlocking paving units  (Specification C936/C936M)Annex A5—Concrete grid paving units (Specification C1319)Annex A6—Concrete roof pavers  (Specification C1491)Annex A7—Dry-cast articulating concrete block (Specification D6684)Annex A8—Segmental concrete paving slabs (Specification C1782/C1782M)Annex A9—Concrete ballast block (Specification C1884)1.3 The test procedures included in these test methods are also applicable to other types of units not referenced in these test methods, but specific testing and reporting requirements for those units are not included.1.4 These test methods include the following sections:  Section             1Referenced Documents      2Terminology          3       4Sampling            5Measurement of Dimensions    6Compressive Strength      7Absorption           8Calculations           9Report             10Keywords            11Annexes—Test Procedures  Concrete Masonry Units      Annex A1Concrete and Calcium Silicate Brick  Annex A2Segmental Retaining Wall Units   Annex A3Concrete Interlocking Paving Units Annex A4Concrete Grid Paving  Units     Annex A5Concrete Roof Pavers       Annex A6Dry-Cast Articulating  Concrete Block Annex A7Segmental Concrete Paving Slabs Annex A8Concrete Ballast Block Annex A9Worksheet and Test Report for Concrete Masonry Units     Appendix X1Test Report for Concrete Interlocking Paving Units Appendix X2Calculation of Normalized Web Area Appendix X3NOTE 1: The testing laboratory performing these test methods should be evaluated in accordance with Practice C1093.1.5 The text of this test method references notes and footnotes that provide explanatory material. These notes and footnotes (excluding those in tables and figures) shall not be considered as requirements of the standard.1.6 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.1.7 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.