1、Designation: C 1587 06Standard Practice forPreparation of Field Removed Manufactured Masonry Unitsand Masonry Specimens for Compressive Strength Testing1This standard is issued under the fixed designation C 1587; the number immediately following the designation indicates the year oforiginal adoption
2、 or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. Asuperscript epsilon (e) indicates an editorial change since the last revision or reapproval.1. Scope*1.1 The purpose of this practice is to standardize thepreparation of manufactu
3、red masonry units and masonry speci-mens extracted from the field for compressive strength testingin a laboratory environment.1.2 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 ap
4、pro-priate safety and health practices and to determine theapplicability of regulatory limitations prior to use.2. Referenced Documents2.1 ASTM Standards:2C43 Terminology of Structural Clay ProductsC67 Test Methods for Sampling and Testing Brick andStructural Clay TileC 140 Test Methods for Sampling
5、 and Testing ConcreteMasonry Units and Related UnitsC 1180 Terminology of Mortar and Grout for Unit MasonryC 1209 Terminology of Concrete Masonry Units and Re-lated UnitsC 1232 Terminology of MasonryC 1314 Test Method for Compressive Strength of MasonryPrismsC 1532 Practice for Selection, Removal, a
6、nd Shipment ofMasonry Specimens from Existing Construction3. Terminology3.1 Definitions: For definitions of terms used in this prac-tice, refer to Terminologies C43, C 1180, C 1209, and C 1232.4. Significance and Use4.1 Masonry units and masonry specimens are sometimesremoved as part of an assessmen
7、t of the condition of masonryconstruction. This document is intended to standardize thepreparation of such units and masonry specimens for compres-sive strength testing.NOTE 1Masonry specimens removed from existing masonry con-struction (single wythe, multi-wythe or portions thereof) will sometimesc
8、ontain mortar, grout, reinforcement, or accessory materials.4.2 This practice provides information pertaining to theremoval of hardened mortar, cleaning, and other specialpreparation required prior to compressive strength testing of amanufactured masonry unit or masonry specimen that has beenremoved
9、 from usage.4.3 This practice does not address test procedures or the useof test results conducted on removed specimens. This practicedoes not determine whether removed masonry materials metoriginal specification requirements.NOTE 2Compressive strength test results of masonry units andmasonry specim
10、ens extracted from the field are expected to vary from andwill likely be less than compressive strength test results of masonry unitsthat have not been placed in service or masonry prisms that have beenconstructed within a controlled environment. Comparison of results oftests conducted on specimens
11、removed from service to those of masonryunits prior to use or of constructed 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
12、in accordance to Practice C 1532.5.2 Carefully remove specimens from transportation 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.5.2.1 If specimen shipment do
13、es 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.1This practice is under the jurisdiction of ASTM Committee C15 on Manufac-tured Masonry Units and is the direct responsibility of Subcommit
14、tee C15.04 onResearch.Current edition approved June 1, 2006. Published June 2006. Originallyapproved in 2004. Last previous edition approved in 2005 as C 1587 05a.2For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at serviceastm.org. For Annual Book
15、 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, United States.5.3 Take photogra
16、phs of specimens as received to documentcondition prior to any preparation for testing.6. Preparation of Units and Prisms6.1 Unless required by the testing procedure that will besubsequently used to evaluate the specimen, do not oven drythe test specimens.6.2 Remove all unsound material and smooth i
17、rregularitiesof the units or masonry specimens bearing surfaces using amethod that will not reduce 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
18、 plumb over 12 in.(305 mm).6.3 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.6.4 Ungrouted masonry specimens are particularly suscep-tible to damag
19、e during handling and preparation for testing.Use care to limit the potential damage to the bond betweenmortar and manufactured masonry units in the masonry speci-men.6.5 If necessary, remove sound material to produce a moresuitable test specimen.6.6 If possible, avoid producing test specimens conta
20、iningunsupported protrusions (from face shells or webs of hollowunits) whose lengths are more than twice their thickness.6.7 If possible, avoid saw-cuts that reduce the thickness ofthe webs and face shells of hollow units or prisms.6.8 If possible, prepare test specimens to minimize varia-tions in l
21、ength and width provided such preparation does notdamage the test specimen.6.9 Remove excess mortar if present on the top or bottom ofbearing surfaces of the unit or prism. However, if such removalis expected to do more harm to the test specimen than good,leave mortar in place. Remove mortar on top
22、or bottom of thebearing surfaces of the final test specimen if the thickness ofthat mortar is more than18 in. (3 mm) provided the mortar canbe removed without damaging the test specimen.6.10 Discard all test specimens that are damaged as a resultof removing unsound material. Resulting damage is asse
23、ssedby comparing visible cracking, or chipping on the unit or prismafter removal to that documented under 5.2 and 5.3. Do notdiscard test specimens if resulting damage occurs in portions ofthe test specimen that will be subsequently cut or otherwisemodified so that the damaged portion of the masonry
24、 unit ormasonry specimen will not be tested.6.11 Document methods used in removal of unsound mate-rials and smoothing irregularities of unit or prism surfaces.6.12 Take photographs of test specimens after preparationhas been completed to document condition prior to capping.7. Masonry Units7.1 Refer
25、to Test Methods C67for additional informationrelative to the preparation of brick and structural clay tile testspecimens prior to testing.7.2 Refer to Test Methods C 140 for additional informationrelative to the preparation of concrete masonry unit testspecimens prior to testing.NOTE 3Individual mas
26、onry units filled or partially filled with grout ormortar should not be used to determine the compressive strength of themasonry units or of the masonry assembly. If evaluation of groutedmasonry is desired, it should be performed on masonry assembliesmeeting the requirements of Section 8.8. Masonry
27、Prisms8.1 The masonry prisms shall:8.1.1 Include at least one bed joint,8.1.2 Have an aspect ratio (height divided by least lateraldimension) between 1.3 and 5,8.1.3 Have a height defined by at least two units, each ofwhich are no less than one-half the full height of a typical unit,8.1.4 Have a min
28、imum length of12 unit and a maximumlength of 2 units, and8.1.5 Not contain vertical reinforcement.8.2 For prisms containing units 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.8.3 Refe
29、r to Test Method C 1314 for additional informationrelative to the preparation of masonry prisms prior to testing.9. Report9.1 Prepare a written report with the following information:9.1.1 Identification of structure from which specimens wereobtained.9.1.2 General description of specimens.9.1.3 Name
30、of parties that sampled and transported thespecimens.9.1.4 Documented condition of specimens as received, in-cluding photographs.9.1.5 Description of procedures used to prepare the speci-mens.9.1.6 Documented condition of specimens after preparationfor testing, including photographs.9.1.7 Noted pres
31、ence of unsupported projections, if any,with accompanying note that such projections may adverselyaffect test results.9.1.8 Noted reductions in face shell or web thickness, if any,with accompanying note that such reductions may adverselyaffect test results.9.1.9 Noted presence of mortar greater than
32、18 in. thicknesson top or bottom bearing surface, if any, with accompanyingnote that such mortar may adversely affect test results.9.1.10 Noted variations in length, width, and cross sectionalarea, if any, with accompanying note that such variations mayadversely affect test results.9.2 If specimen s
33、hipment does not include a visual assess-ment report, note report as missing as part of this test report.10. Keywords10.1 brick; compressive strength testing; concrete masonryunit; grout; hardened mortar; manufactured masonry units;masonry prisms; masonry specimens; mortar; preparation ofmasonry for
34、 testing; structural clay tileC1587062SUMMARY OF CHANGESCommittee C15 has identified the location of selected changes to this standard since the last issue(C 1587 05a) that may impact the use of this standard. (Approved June 1, 2006.)(1) Sections 2.1, 5.1, and 5.2 were modified to removereferences t
35、o Practice C 1420.(2) Section 6.1 was added to prohibit oven-dryinig of speci-mens under some circumstances.Committee C15 has identified the location of selected changes to this standard since the last issue (C 1587 05) that mayimpact the use of this standard. (Approved May 15, 2005.)(1) Note 3 was
36、added to clarify how to test grouted masonry.Committee C15 has identified the location of selected changes to this standard since the last issue (C 1587 04) that mayimpact the use of this standard. (Approved May 15, 2005.)(1) Sections 1.1 and 4.2 were modified to refer to “manufac-tured masonry unit
37、s” and “assemblies” to make them consis-tent with the title.(2) The term “manufactured masonry units” was added to theKeywords.ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentionedin this standard. Users of this standard are
38、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 must be reviewed every five years andif not re
39、vised, 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 theresponsible technical committee, which you
40、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 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).C1587063
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