1、Designation: C1587 09C1587/C1587M 15Standard Practice forPreparation of Field Removed Manufactured Masonry Unitsand Masonry Specimens for Testing1This standard is issued under the fixed designation C1587;C1587/C1587M; the number immediately following the designation indicatesthe year of original ado
2、ption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of lastreapproval. 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 manu
3、factured masonry units and masonry specimensextracted 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 values given inparentheses are mathematical
4、conversions to SI units that are provided for information only and are not considered inch-poundunits are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be usedindependently of the other. Combining values from the two systems may result
5、 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 responsibilityof the user of this standard to establish appropriate safety and health practices and to determine the applicability of regulatoryl
6、imitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C67 Test Methods for Sampling and Testing Brick and Structural Clay TileC140C140/C140M Test Methods for Sampling and Testing Concrete Masonry Units and Related UnitsC1072 Test Methods for Measurement of Masonry Flexural Bond Strength
7、C1180 Terminology of Mortar and Grout for Unit MasonryC1232 Terminology of MasonryC1314 Test Method for Compressive Strength of Masonry PrismsC1532C1532/C1532M Practice for Selection, Removal, and Shipment of Manufactured Masonry Units and Masonry Specimensfrom Existing Construction3. Terminology3.1
8、 Definitions: DefinitionsFor definitions of terms used in this practice, refer to Terminologies C1180 and C1232.4. Significance and Use4.1 Masonry units and masonry specimens are sometimes removed as part of an assessment of the condition of masonryconstruction. This documentstandard is intended to
9、standardize the preparation of such units and masonry specimens forcompressive and flexural bond strength testing.NOTE 1Masonry specimens removed from existing masonry construction (single wythe, multi-wythe or portions thereof) will sometimes containmortar, grout, reinforcement, or accessory materi
10、als.4.2 This practice provides information pertaining to the removal of hardened mortar, cleaning, and other special preparationrequired prior to compressive and flexural bond strength testing of a manufactured masonry unit or masonry specimen that has beenremoved from usage.4.3 This practice does n
11、ot address test procedures or the use of test results conducted on removed specimens. This practice doesnot determine whether removed masonry materials met original specification requirements.1 This practice is under the jurisdiction ofASTM Committee C15 on Manufactured Masonry Units and is the dire
12、ct responsibility of Subcommittee C15.04 on on Research.Current edition approved June 1, 2009July 1, 2015. Published June 2009July 2015. Originally approved in 2004. Last previous edition approved in 20062009 asC1587 06C1587 09 DOI: 10.1520/C1587-09.10.1520/C1587_C1587M15.2 For referencedASTM standa
13、rds, visit theASTM website, www.astm.org, or contactASTM Customer Service at serviceastm.org. For Annual Book of ASTM Standardsvolume information, refer to the standards Document Summary page on the ASTM website.This document is not an ASTM standard and is intended only to provide the user of an AST
14、M standard an indication of what changes have been made to the previous version. Becauseit may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current versionof the standard as published
15、by ASTM is to be considered the official document.*A Summary of Changes section appears at the end of this standardCopyright ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States1NOTE 2Compressive and flexural bond strength test results of masonry un
16、its and masonry specimens extracted from the field are expected to varyfrom 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 withina controlled environment. Comparison of results of tests conducted on specime
17、ns removed from service to those of masonry units prior to use or ofconstructed prisms is difficult. Considerable judgment is typically required for the selection and preparation of specimens removed from service.5. Inspection of Specimens5.1 Specimens shall be selected, removed from service, and sh
18、ipped in accordance to Practice C1532C1532/C1532M.5.2 Carefully remove specimens from transportation packaging. Visually inspect specimens. Compare received specimens withvisual assessment as reported under Practice C1532C1532/C1532M. Note additional damage, if any, contained within eachspecimen.5.2
19、.1 If specimen shipment does not include a visual assessment report, note the report as missing as part of the subsequent testreport 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. Prepara
20、tion for Compressive Strength Testing6.1 Preparation of Units and Prisms : Prisms:6.1.1 Unless required by the testing procedure that will be subsequently used to evaluate the specimen, do not oven dry the testspecimens.6.1.2 Remove all unsound material and smooth irregularities of the units or maso
21、nry specimens bearing surfaces using amethod that will not affect the integrity of the unit or masonry specimen to produce a test specimen, either a unit or a prism, thatis no more than 3 mm 18 in. (3 mm)in. out of level over 12 in. (305 mm)300 mm 12 in. and no more than 3 mm 18 in. (3mm)in. out of
22、plumb over 12 in. (305 mm).300 mm 12 in.6.1.3 Test specimens are subsequently capped to provide a level-bearing surface for compressive strength testing. Therefore, itis not necessary to remove portions of hardened mortar in recesses of masonry.6.1.4 Ungrouted masonry specimens are particularly susc
23、eptible to damage during handling and preparation for testing. Usecare to limit the potential damage to the bond between mortar and manufactured masonry units in the masonry specimen.6.1.5 If necessary, remove sound material to produce a more suitable test specimen.6.1.6 If possible, avoid producing
24、 test specimens containing unsupported protrusions (from face shells or webs of hollow units)whose lengths are more than twice their thickness.Limit protrusions to those allowed in the appropriate test procedure.6.1.7 If possible, avoid saw-cuts that reduce the thickness of the webs and face shells
25、of hollow units or prisms.6.1.8 If possible, prepare test specimens to minimize variations in length and width provided such preparation does not damagethe test specimen.6.1.9 Remove loose and unsound mortar. Remove excess mortar that would interfere with capping from the top and bottom ofbearing su
26、rfaces of the unit or prism. However, if such removal is expected to do more harm to the test specimen than good, leavemortar in place.6.1.10 Discard all test specimens that are damaged as a result of removing unsound material. Resulting damage is assessed bycomparing visible cracking, or chipping o
27、n the unit or prism after removal to that documented under 6.1.2 and 6.1.3. Do not discardtest specimens if resulting damage occurs in portions of the test specimen that will be subsequently cut or otherwise modified sothat the damaged portion of the masonry unit or masonry specimen will not be test
28、ed.6.1.11 Document methods used in removal of unsound materials and smoothing irregularities of unit or prism surfaces.6.1.12 Take photographs of test specimens after preparation has been completed to document condition prior to capping.6.2 Masonry Units:6.2.1 Refer to Test Methods C67 for additiona
29、l information relative to the preparation of brick and structural clay tile testspecimens prior to testing.6.2.2 Refer to Test Methods C140C140/C140M for additional information relative to the preparation of concrete masonry unittest specimens prior to testing.NOTE 3Individual masonry units filled o
30、r partially filled with grout or mortar should not be used to determine the compressive strength of the masonryunits or of the masonry assembly. If evaluation of grouted masonry is desired, it should be performed on masonry assemblies meeting the requirementsof Section 6.3.6.3 Masonry Prisms:6.3.1 T
31、he 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 lateral dimension) between 1.3 and 5,6.3.1.3 Have a height defined by at least two units, each of which are no less than one-half the full height of a typical unit,6.3.1.4 Have a mini
32、mum length of 12 unit and a maximum length of 2 units, and6.3.1.5 Not contain vertical reinforcement.6.3.2 For prisms containing units of varying sizes and/or shapes, unit height and length shall be considered that of the largestunit height or the largest unit length within the prism, respectively.C
33、1587/C1587M 1526.3.3 Refer to Test Method C1314 for additional information relative to the preparation of masonry prisms prior to testing.7. Preparation for Flexural Bond Strength Testing7.1 Where mortar fins and extrusions project from the specimen to the extent that they interfere with the attachm
34、ent of the bondwrench, they shall be removed without causing damage to the specimen. Remove only enough material to enable proper attachmentof the bond wrench apparatus defined in Test Method C1072.7.2 Do not discard test specimens if resulting damage occurs in portions of the test specimen that wil
35、l be subsequently cut orotherwise modified so that the damaged portion of the masonry unit or masonry specimen will not be tested.7.3 Document methods used in removal of unsound materials and smoothing irregularities of unit or prism surfaces.7.4 Take photographs of test specimens after preparation
36、has been completed to document condition prior to testing.7.5 Refer to Test Method C1072 for additional information relative to the preparation of masonry prisms prior to testing.8. Report8.1 Prepare a written report with the following information:8.1.1 Identification of structure from which specime
37、ns were obtained.8.1.2 General description of specimens.8.1.3 Name of parties that sampled and transported the specimens.8.1.4 Documented condition of specimens as received, including photographs.8.1.5 Description of procedures used to prepare the specimens.8.1.6 Documented condition of specimens af
38、ter preparation for testing, including photographs.8.1.7 Noted presence of unsupported projections, if any, with accompanying note that such projections may adversely affect testresults.8.1.8 Noted reductions in face shell or web thickness, if any, with accompanying note that such reductions may adv
39、ersely affecttest results.8.1.9 Noted presence of mortar on top or bottom of specimens, if any, with accompanying note that such mortar may adverselyaffect test results.8.1.10 NNotedoted variations in length, width, and cross sectional area, if any, with accompanying note that such variations mayadv
40、ersely affect test results.8.1.11 Noted presence of reinforcement or connectors, or both, if any, with accompanying note documenting size and location.8.2 If specimen shipment does not include a visual assessment report, note report as missing as part of this test report.9. Keywords9.1 bond wrench;
41、brick; compressive strength testing; concrete masonry unit; flexural bond strength testing; grout; hardenedmortar; manufactured masonry units; masonry prisms; masonry specimens; mortar; preparation of masonry for testing; structuralclay tileSUMMARY OF CHANGESCommittee C15 has identified the location
42、 of selected changes to this standard since the last issue(C1587 06C1587 09) that may impact the use of this standard. (Approved June (July 1, 2009.)2015)(1) Revised 6.1.6 on limiting protrusions to make it more universally applicable.(2) The title was changed, Section Changes 7 was added, and other
43、 modifications were made throughout the standard to addprovisions for preparing masonry specimens for flexural bond strength testing.change it to a dual standard with SI units followedby inch-pound units in brackets.C1587/C1587M 153ASTM International takes no position respecting the validity of any
44、patent rights asserted in connection with any item mentionedin 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 revis
45、ion at any time by the responsible technical committee and 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 co
46、mments will receive careful consideration at a meeting of 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 copyrigh
47、ted by ASTM International, 100 Barr Harbor Drive, PO Box 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). Permission rights to photocopy the standard may also be secured from the Copyright Clearance Center, 222Rosewood Drive, Danvers, MA 01923, Tel: (978) 646-2600; http:/ 154
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