ASTM C1587/C1587M-21a

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Designation: C1587/C1587M − 21 C1587/C1587M − 21a
Standard Practice for
Preparation of Field Removed Manufactured Masonry Units
and Masonry Specimens for Testing
This standard is issued under the fixed designation C1587/C1587M; the number immediately following the designation indicates the
year of original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last
reapproval. A superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope*
1.1 The purpose of this practice is to standardize the preparation of manufactured masonry units and masonry specimens extracted
from the field for compressive and flexural bond strength testing in a laboratory environment.
1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The inch-pound units are
shown in brackets. 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.
1.3 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, health, and environmental practices and determine the applicability of
regulatory limitations prior to use.
1.4 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.
2. Referenced Documents
2.1 ASTM Standards:
C67/C67M Test Methods for Sampling and Testing Brick and Structural Clay Tile
C140/C140M Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C1072 Test Methods for Measurement of Masonry Flexural Bond Strength
C1180 Terminology of Mortar and Grout for Unit Masonry
C1232 Terminology for Masonry
C1314 Test Method for Compressive Strength of Masonry Prisms
C1532/C1532M Practice for Selection, Removal, and Shipment of Manufactured Masonry Units and Masonry Specimens from
Existing Construction
3. Terminology
3.1 Definitions—For definitions of terms used in this practice, refer to Terminologies C1180 and C1232.
This practice is under the jurisdiction of ASTM Committee C15 on Manufactured Masonry Units and is the direct responsibility of Subcommittee C15.04 on Research.
Current edition approved Feb. 1, 2021June 1, 2021. Published February 2021June 2021. Originally approved in 2004. Last previous edition approved in 20152021 as
C1587 – 15.C1587 – 21. DOI: 10.1520/C1587_C1587M–21.10.1520/C1587_C1587M–21A.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
*A Summary of Changes section appears at the end of this standard
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C1587/C1587M − 21a
4. Significance and Use
4.1 Masonry units and masonry specimens are sometimes removed as part of an assessment of the condition of masonry
construction. This standard is intended to standardize the preparation of such units and masonry specimens for compressive and
flexural bond strength testing.
NOTE 1—Masonry specimens removed from existing masonry construction (single wythe, multi-wythe or portions thereof) will sometimes contain mortar,
grout, reinforcement, or accessory materials.
4.2 This practice provides information pertaining to the removal of hardened mortar, cleaning, and other special preparation
required prior to compressive and flexural bond strength testing of a manufactured masonry unit or masonry specimen that has been
removed from usage.
4.3 This practice does not address test procedures or the use of test results conducted on removed specimens. This practice does
not determine whether removed masonry materials met original specification requirements.
NOTE 2—Compressive and flexural bond strength test results of masonry units and masonry specimens extracted from the field are expected to vary from
and will likely be less than test results of masonry units that have not been placed in service or masonry prisms that have been constructed within a
controlled environment. Comparison of results of tests conducted on specimens removed from service to those of masonry units prior to use or of
constructed prisms is difficult. Considerable judgment is typically required for the selection and preparation of specimens removed from service.
5. Inspection of Specimens
5.1 Specimens shall be selected, removed from service, and shipped in accordance to Practice C1532/C1532M.
5.2 Carefully remove specimens from transportation packaging. Visually inspect specimens. Compare received specimens with
visual assessment as reported under Practice C1532/C1532M. Note additional damage, if any, contained within each specimen.
5.2.1 If specimen shipment does not include a visual assessment report, note the report as missing as part of the subsequent test
report and document condition of each specimen as received.
5.3 Take photographs of specimens as received to document condition prior to any preparation for testing.
6. Preparation for Compressive Strength Testing
6.1 Preparation of Units and Prisms:
6.1.1 Unless required by the testing procedure that will be subsequently used to evaluate the specimen, do not oven dry the test
specimens.
6.1.2 Use care to limit the potential damage to the bond between mortar and manufactured masonry units in the masonry
specimen; this is important for ungrouted masonry specimens that are particularly susceptible to damage during handling and
preparation for testing.
6.1.3 Test specimens are subsequently capped to provide a level-bearing surface for compressive strength testing. Therefore, it is
not necessary to remove portions of hardened mortar in recesses of masonry.
6.1.4 Remove loose and unsound material. Remove excess mortar that would interfere with capping from the top and bottom of
bearing surfaces of the unit or prism. However, if such removal is expected to do more harm to the test specimen than good, leave
mortar in place.
6.1.5 Smooth irregularities of the unit’s or masonry specimen’s bearing surfaces using a method that will not affect the integrity
of the unit or masonry specimen to produce a test specimen, either a unit or a prism, that is no more than 3 mm [ ⁄8 in.] out of
level over 300 mm [12 in.] and no more than 3 mm [ ⁄8 in.] out of plumb over 300 mm [12 in.].
6.1.6 If necessary, remove sound material to produce a more suitable test specimen.
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