2506987

ASTM C1072-22

Standard Test Methods for Measurement of Masonry Flexural Bond Strength

standard by ASTM International, 12/01/2022

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1.1 These test methods evaluate the flexural bond strength, normal to the bed joints, of masonry built of manufactured masonry units. Sampling and testing procedures are referenced, and terms are defined. Three different specimen fabrication methods are specified, each for a different purpose:
1.1.1 The first method is the "Test Method for Laboratory-Prepared Specimens." Its purpose is to compare the bond strengths (under the given conditions) of masonry mortars. It could be used, for example, to check the quality of mortar products after production, or to indicate the bond strength (under the given conditions) of a mortar product without requiring the product to be tested in combination with many different units. It is not intended to represent field conditions. It uses standard concrete masonry units. Mortars are batched by weight equivalents of volume proportions and are mixed to a prescribed flow. Prisms are constructed using a jig and are bag-cured.
1.1.2 The second method is the "Test Method for Field-Prepared Specimens." Its purpose is to evaluate the bond strength (under the given conditions) of a particular unit-mortar combination, either for preconstruction evaluation of materials or for quality control purposes during construction. Mortars are batched conventionally, and the flow is not prescribed. Prisms are constructed conventionally (no jig) and are bag-cured.
1.1.3 The third method is the "Test Method for Prisms Removed from Existing Masonry." Its purpose is to evaluate the bond strength of unit-mortar combinations of prisms cut from existing walls.
1.1.4 The three methods are not consistent, nor are they intended to be. They are intended to be used for three different purposes. To make this clear, the three methods are presented separately.
1.1.5 Appendix X1 suggests two possible criteria for assessing the bond strength values obtained using these test methods. These possible evaluation criteria are given for illustration only and are not mandatory.
1.2 The text of this standard refers to 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.
1.3 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 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.
1.5 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.
 

Product Details

Published:
12/01/2022
Number of Pages:
19
File Size:
1 file , 760 KB
Redline File Size:
2 files , 1.7 MB
Note:
This product is unavailable in Russia, Ukraine, Belarus
 

Document History

  1. ASTM C1072-22

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    Standard Test Methods for Measurement of Masonry Flexural Bond Strength

    • Most Recent

  2. ASTM C1072-19


    Standard Test Methods for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  3. ASTM C1072-13e1


    Standard Test Methods for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  4. ASTM C1072-13


    Standard Test Methods for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  5. ASTM C1072-12


    Standard Test Methods for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  6. ASTM C1072-11


    Standard Test Methods for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  7. ASTM C1072-10


    Standard Test Method for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  8. ASTM C1357-09


    Standard Test Methods for Evaluating Masonry Bond Strength (Withdrawn 2016)

    • Historical Version

  9. ASTM C1072-06


    Standard Test Method for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  10. ASTM C1072-05b


    Standard Test Method for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  11. ASTM C1072-05a


    Standard Test Method for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  12. ASTM C1357-05


    Standard Test Methods for Evaluating Masonry Bond Strength

    • Historical Version

  13. ASTM C1072-05


    Standard Test Method for Measurement of Masonry Flexural Bond Strength

    • Historical Version

  14. ASTM C1357-04a


    Standard Test Methods for Evaluating Masonry Bond Strength

    • Historical Version

  15. ASTM C1357-04


    Standard Test Methods for Evaluating Masonry Bond Strength

    • Historical Version

  16. ASTM C1357-02


    Standard Test Methods for Evaluating Masonry Bond Strength

    • Historical Version

  17. ASTM C1072-00a


    Standard Test Method for Measurement of Masonry Flexural Bond Strength

    • Historical Version