1、Designation: C 1587 09Standard Practice forPreparation of Field Removed Manufactured Masonry Unitsand Masonry Specimens for Testing1This standard is issued under the fixed designation C 1587; the number immediately following the designation indicates the year oforiginal adoption or, in the case of r
2、evision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon () indicates an editorial change since the last revision or reapproval.1. Scope*1.1 The purpose of this practice is to standardize thepreparation of manufactured masonry units and
3、masonry speci-mens extracted from the field for compressive and flexuralbond strength testing in a laboratory environment.1.2 The values stated in inch-pound units are to be regardedas standard. The values given in parentheses are mathematicalconversions to SI units that are provided for information
4、 onlyand are not considered standard.1.3 This standard does not purport to address all of thesafety concerns, if any, associated with its use. It is theresponsibility of the user of this standard to establish appro-priate safety and health practices and to determine theapplicability of regulatory li
5、mitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C67 Test Methods for Sampling and Testing Brick andStructural Clay TileC 140 Test Methods for Sampling and Testing ConcreteMasonry Units and Related UnitsC 1072 Test Method for Measurement of Masonry FlexuralBond StrengthC 1180 Termin
6、ology of Mortar and Grout for Unit MasonryC 1232 Terminology of MasonryC 1314 Test Method for Compressive Strength of MasonryPrismsC 1532 Practice for Selection, Removal, and Shipment ofManufactured Masonry Units and Masonry Specimensfrom Existing Construction3. Terminology3.1 Definitions: For defin
7、itions of terms used in this prac-tice, refer to Terminologies C 1180 and C 1232.4. Significance and Use4.1 Masonry units and masonry specimens are sometimesremoved as part of an assessment of the condition of masonryconstruction. This document is intended to standardize thepreparation of such units
8、 and masonry specimens for compres-sive and flexural bond strength testing.NOTE 1Masonry specimens removed from existing masonry con-struction (single wythe, multi-wythe or portions thereof) will sometimescontain mortar, grout, reinforcement, or accessory materials.4.2 This practice provides informa
9、tion pertaining to theremoval of hardened mortar, cleaning, and other specialpreparation required prior to compressive and flexural bondstrength testing of a manufactured masonry unit or masonryspecimen that has been removed from usage.4.3 This practice does not address test procedures or the useof
10、test results conducted on removed specimens. This practicedoes not determine whether removed masonry materials metoriginal specification requirements.NOTE 2Compressive and flexural bond strength test results of ma-sonry units and masonry specimens extracted from the field are expectedto vary from an
11、d will likely be less than test results of masonry units thathave not been placed in service or masonry prisms that have beenconstructed within a controlled environment. Comparison of results oftests conducted on specimens removed from service to those of masonryunits prior to use or of constructed
12、prisms is difficult. Considerablejudgment is typically required for the selection and preparation ofspecimens removed from service.5. Inspection of Specimens5.1 Specimens shall be selected, removed from service, andshipped in accordance to Practice C 1532.5.2 Carefully remove specimens from transpor
13、tation pack-aging. Visually inspect specimens. Compare received speci-mens with visual assessment as reported under PracticeC 1532. Note additional damage, if any, contained within eachspecimen.1This practice is under the jurisdiction of ASTM Committee C15 on Manufac-tured Masonry Units and is the d
14、irect responsibility of Subcommittee C15.04 onResearch.Current edition approved June 1, 2009. Published June 2009. Originallyapproved in 2004. Last previous edition approved in 2006 as C 1587 062For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at s
15、erviceastm.org. For Annual Book of ASTMStandards volume information, refer to the standards Document Summary page onthe ASTM website.1*A Summary of Changes section appears at the end of this standard.Copyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959,
16、United States.5.2.1 If specimen shipment does not include a visual assess-ment report, note the report as missing as part of the subse-quent test report and document condition of each specimen asreceived.5.3 Take photographs of specimens as received to documentcondition prior to any preparation for
17、testing.6. Preparation for Compressive Strength Testing6.1 Preparation of Units and Prisms:6.1.1 Unless required by the testing procedure that will besubsequently used to evaluate the specimen, do not oven drythe test specimens.6.1.2 Remove all unsound material and smooth irregulari-ties of the unit
18、s or masonry specimens bearing surfaces usinga method that will not affect the integrity of the unit or masonryspecimen to produce a test specimen, either a unit or a prism,that is no more than18 in. (3 mm) out of level over 12 in. (305mm) and no more than18 in. (3 mm) out of plumb over 12 in.(305 m
19、m).6.1.3 Test specimens are subsequently capped to provide alevel-bearing surface for compressive strength testing. There-fore, it is not necessary to remove portions of hardened mortarin recesses of masonry.6.1.4 Ungrouted masonry specimens are particularly sus-ceptible to damage during handling an
20、d preparation for testing.Use care to limit the potential damage to the bond betweenmortar and manufactured masonry units in the masonry speci-men.6.1.5 If necessary, remove sound material to produce a moresuitable test specimen.6.1.6 If possible, avoid producing test specimens containingunsupported
21、 protrusions (from face shells or webs of hollowunits) whose lengths are more than twice their thickness.6.1.7 If possible, avoid saw-cuts that reduce the thickness ofthe webs and face shells of hollow units or prisms.6.1.8 If possible, prepare test specimens to minimize varia-tions in length and wi
22、dth provided such preparation does notdamage the test specimen.6.1.9 Remove loose and unsound mortar. Remove excessmortar that would interfere with capping from the top andbottom of bearing surfaces of the unit or prism. However, ifsuch removal is expected to do more harm to the test specimenthan go
23、od, leave mortar in place.6.1.10 Discard all test specimens that are damaged as aresult of removing unsound material. Resulting damage isassessed by comparing visible cracking, or chipping on the unitor prism after removal to that documented under 6.1.2 and6.1.3. Do not discard test specimens if res
24、ulting damage occursin portions of the test specimen that will be subsequently cut orotherwise modified so that the damaged portion of the masonryunit or masonry specimen will not be tested.6.1.11 Document methods used in removal of unsoundmaterials and smoothing irregularities of unit or prism sur-
25、faces.6.1.12 Take photographs of test specimens after preparationhas been completed to document condition prior to capping.6.2 Masonry Units:6.2.1 Refer to Test Methods C67for additional informationrelative to the preparation of brick and structural clay tile testspecimens prior to testing.6.2.2 Ref
26、er to Test Methods C 140 for additional informa-tion relative to the preparation of concrete masonry unit testspecimens prior to testing.NOTE 3Individual masonry units filled or partially filled with grout ormortar should not be used to determine the compressive strength of themasonry units or of th
27、e masonry assembly. If evaluation of groutedmasonry is desired, it should be performed on masonry assembliesmeeting the requirements of Section 6.3.6.3 Masonry Prisms:6.3.1 The masonry prisms shall:6.3.1.1 Include at least one bed joint,6.3.1.2 Have an aspect ratio (height divided by least lateraldi
28、mension) between 1.3 and 5,6.3.1.3 Have a height defined by at least two units, each ofwhich are no less than one-half the full height of a typical unit,6.3.1.4 Have a minimum length of12 unit and a maximumlength of 2 units, and6.3.1.5 Not contain vertical reinforcement.6.3.2 For prisms containing u
29、nits of varying sizes and/orshapes, unit height and length shall be considered that of thelargest unit height or the largest unit length within the prism,respectively.6.3.3 Refer to Test Method C 1314 for additional informa-tion relative to the preparation of masonry prisms prior totesting.7. Prepar
30、ation for Flexural Bond Strength Testing7.1 Where mortar fins and extrusions project from thespecimen to the extent that they interfere with the attachmentof the bond wrench, they shall be removed without causingdamage to the specimen. Remove only enough material toenable proper attachment of the bo
31、nd wrench apparatus definedin Test Method C 1072.7.2 Do not discard test specimens if resulting damageoccurs in portions of the test specimen that will be subse-quently cut or otherwise modified so that the damaged portionof the masonry unit or masonry specimen will not be tested.7.3 Document method
32、s used in removal of unsound mate-rials and smoothing irregularities of unit or prism surfaces.7.4 Take photographs of test specimens after preparationhas been completed to document condition prior to testing.7.5 Refer to Test Method C 1072 for additional informationrelative to the preparation of ma
33、sonry prisms prior to testing.8. Report8.1 Prepare a written report with the following information:8.1.1 Identification of structure from which specimens wereobtained.8.1.2 General description of specimens.8.1.3 Name of parties that sampled and transported thespecimens.8.1.4 Documented condition of
34、specimens as received, in-cluding photographs.8.1.5 Description of procedures used to prepare the speci-mens.C15870928.1.6 Documented condition of specimens after preparationfor testing, including photographs.8.1.7 Noted presence of unsupported projections, if any,with accompanying note that such pr
35、ojections may adverselyaffect test results.8.1.8 Noted reductions in face shell or web thickness, if any,with accompanying note that such reductions may adverselyaffect test results.8.1.9 Noted presence of mortar on top or bottom of speci-mens, if any, with accompanying note that such mortar mayadve
36、rsely affect test results.8.1.10 Noted variations in length, width, and cross sectionalarea, if any, with accompanying note that such variations mayadversely affect test results.8.1.11 Noted presence of reinforcement or connectors, orboth, if any, with accompanying note documenting size andlocation.
37、8.2 If specimen shipment does not include a visual assess-ment report, note report as missing as part of this test report.9. Keywords9.1 bond wrench; brick; compressive strength testing; con-crete masonry unit; flexural bond strength testing; grout;hardened mortar; manufactured masonry units; masonr
38、yprisms; masonry specimens; mortar; preparation of masonryfor testing; structural clay tileSUMMARY OF CHANGESCommittee C15 has identified the location of selected changes to this standard since the last issue(C 1587 06) that may impact the use of this standard. (Approved June 1, 2009.)(1) The title
39、was changed, Section 7 was added, and othermodifications were made throughout the standard to addprovisions for preparing masonry specimens for flexural bondstrength testing.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mention
40、edin this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the riskof infringement of such rights, are entirely their own responsibility.This standard is subject to revision at any time by the responsible technical committee and
41、 must be reviewed every five years andif not revised, either reapproved or withdrawn. Your comments are invited either for revision of this standard or for additional standardsand should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of
42、 theresponsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you shouldmake your views known to the ASTM Committee on Standards, at the address shown below.This standard is copyrighted by ASTM International, 100 Barr Harbor Drive, PO Box
43、C700, West Conshohocken, PA 19428-2959,United States. Individual reprints (single or multiple copies) of this standard may be obtained by contacting ASTM at the aboveaddress or at 610-832-9585 (phone), 610-832-9555 (fax), or serviceastm.org (e-mail); or through the ASTM website(www.astm.org).C1587093
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