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Designation: D7682 − 10 Standard Test Method for Replication and Measurement of Concrete Surface Profiles Using Replica Putty1 This standard is issued under the fixed designation D7682; 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 r
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  Designation: D7682 − 10 Standard Test Method for Replication and Measurement of Concrete Surface ProfilesUsing Replica Putty 1 This standard is issued under the fixed designation D7682; the number immediately following the designation indicates the year of srcinal adoption or, in the case of revision, 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 This test method is suitable for both field and laboratoryuse to obtain a permanent record of concrete surface profileusing replica putty and to determine the depth of that surfaceprofile. N OTE  1—The procedure in this standard was developed for concretesubstrates but may be appropriate for other rigid substrates. 1.2 A profile can be imparted to concrete by variousmethods such as blast cleaning and acid etching. The depth of the surface profile has been shown to be a factor in coatingadhesion and performance.1.3 The International Concrete Repair Institute (ICRI) pro-vides a means of visually judging a concrete surface by use of nine different visual comparators called Concrete SurfaceProfiles (CSP). This standard compliments the use of thesevisual comparators.1.4 The values stated in SI units are to be regarded asstandard. The values given in parentheses are for informationonly.1.5  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 determine the applica-bility of regulatory limitations prior to use. 2. Referenced Documents 2.1  ASTM Standards: 2 E177 Practice for Use of the Terms Precision and Bias inASTM Test MethodsE691 Practice for Conducting an Interlaboratory Study toDetermine the Precision of a Test Method2.2  ICRI Document: Technical Guideline 03732 Selecting and Specifying Con-crete Surface Preparation for Sealers, Coatings, and Poly-mer Overlays 3 3. Terminology 3.1  Definitions of Terms Specific to This Standard: 3.1.1  plastic profiler, n—  a device that provides a controlledmeans for holding and confining replica putty for placementonto a concrete surface.3.1.2  replica coupon, n—  hardened replica putty containinga reverse image replica of a concrete surface.3.1.3  replica putty, n—  a two-part, anti-stick, rapid harden-ing putty used to conform to a concrete surface and replicatesurface profile.3.1.4  visual comparator, n—  an ICRI molded replica of aconcrete surface profile that allows visual comparison to anactual concrete surface. 4. Summary of Test Method 4.1  Method A—  Replica putty is used to obtain a replicacoupon of a concrete surface that has been abraded orroughened. The replica coupon is visually compared to the nineICRI Visual Comparators (CSP), or to a specific job standard.4.2  Method B—  Replica putty is used to obtain a replicacoupon of a concrete surface that has been abraded orroughened. The replica coupon is then measured by a speciallydesigned micrometer to obtain a quantitative measurement of surface profile (depth). 5. Significance and Use 5.1 For proper bonding of overlays and coatings, it isimportant that a concrete surface have the correct surfaceprofile. This test method allows one to obtain a permanentreplica of the concrete surface, which can then be compared tovisual profile standards, or evaluated quantitatively for profiledepth. The permanent replica may also prove useful in resolv-ing future disputes. 1 This test method is under the jurisdiction of ASTM Committee D01 on Paintand Related Coatings, Materials, and Applications and is the direct responsibility of Subcommittee D01.46 on Industrial Protective Coatings.Current edition approved Dec. 1, 2010. Published December 2010. DOI:10.1520/D7682–10. 2 For referenced ASTM standards, visit the ASTM website, www.astm.org, orcontact ASTM Customer Service at service@astm.org. For  Annual Book of ASTM Standards  volume information, refer to the standard’s Document Summary page onthe ASTM website. 3 Available from International Concrete Repair Institute (ICRI), 3166 S. RiverRoad, Suite 132, Des Plaines, IL 60018, http//www.icri.org. Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States 1    6. Apparatus 6.1 A set of nine ICRI CSP Comparators. 4 6.2 Replica putty and plastic profiler.6.3 A specially designed non-spring loaded micrometer 5 with a bottom anvil of at least 38 mm (1.5 in.) diameter. Theupper contact point is machined flat to a diameter that will notindent the coupon. 7. Calibration and Standardization 7.1 Zero the micrometer prior to each measurement sessionin accordance with the manufacturer’s instructions.7.2 Micrometer accuracy should be checked by measuring ashim of known thickness and confirming results are within thecombined tolerances of both the micrometer and the shim. 8. Procedure 8.1  Method A: 8.1.1 Select a sufficient number of locations to characterizethe surface, as specified or agreed upon between the interestedparties.8.1.2 At each location clean the surface with a brush toremove loose material.8.1.3 Prepare the replica putty in accordance with themanufacturer’s instructions.8.1.4 Place the mixed replica putty into a plastic profiler,mounding the putty in the middle.8.1.5 Place the plastic profiler onto the concrete, putty sidedown. Step on or push the plastic profiler until the shoulderstouch the concrete surface (see Fig. 1). Do not remove theplastic profiler.8.1.6 After sufficient time to cure in accordance with themanufacturer’s instructions twist the plastic profiler and re-move it from the hardened putty (replica coupon).8.1.7 Peel the replica coupon from the concrete surface andnumber the back (smooth) side for future reference.8.1.8 Visually compare the replica coupon to the ICRI CSPvisual comparators, and determine which comparator is visu-ally closest to the surface appearance of the replica coupon.8.2  Method B: 8.2.1 Follow steps 8.1.1-8.1.7 of Method A.8.2.2 On each replica coupon take at least ten micrometermeasurements in different locations ensuring some measure-ments are taken in the bottoms of the valleys and somemeasurements are taken on the tops of the peaks (see Fig. 2).8.2.3 Subtract the lowest thickness measurement from thehighest thickness measurement to determine the profile rangefor each replica coupon. 9. Report 9.1 Report the following information:9.1.1 Date, test location, and replica coupon label numbers. 4 The sole source of supply of the compactors, as well as Guideline 03732 knownto the committee at this time is the International Concrete Repair Institute, 3166 S.River Road, Suite 132, Des Plaines, IL 60018. If you are aware of alternativesuppliers, please provide this information to ASTM International Headquarters.Your comments will receive careful consideration at a meeting of the responsibletechnical committee, 1 which you may attend. 5 The sole source of supply of the micrometer known to the committee at thistime is O.T.B Technologies Inc., 2328 E. Van Buren, Suite 116, Phoenix,AZ 85006.If you are aware of alternative suppliers, please provide this information to ASTMInternational Headquarters. Your comments will receive careful consideration at ameeting of the responsible technical committee, 1 which you may attend. FIG. 1 Plastic Profiler with Replica Putty on ConcreteFIG. 2 Micrometer Measuring a Replica Coupon D7682 − 10 2    9.1.2 Test Method used (A, B, or both).9.1.2.1 For Method A, record the number of the closestmatching ICRI CSP visual comparator.9.1.2.2 For Method B, record the difference between thelowest and highest peak-to-valley measurements on eachreplica coupon. 10. Precision and Bias 6 10.1 The precision of this test method is based on aninterlaboratory study of Test Method D7682 for Replicationand Measurement of Concrete Surface Profiles Using ReplicaPutty, conducted in 2009. Four laboratories participated in thisstudy. Each of the labs reported five replicate test results fornine different materials. Every “test result” reported representsthe difference between the maximum and minimum reportedresult for a set of ten grouped measurements. Except for the useof only four laboratories, Practice E691 was followed for thedesign and analysis of the data; the details are given in ASTMResearch Report RR: D01–1156.10.1.1  Repeatability Limit (r)—  Two test results obtainedwithin one laboratory shall be judged not equivalent if theydiffer by more than the “ r  ” value for that material; “ r  ” is theinterval representing the critical difference between two testresults for the same material, obtained by the same operatorusing the same equipment on the same day in the samelaboratory.10.1.1.1 Repeatability limits are listed in Table 1.10.1.2  Reproducibility Limit (R)—  Two test results shall be judged not equivalent if they differ by more than the “  R ” valuefor that material; “  R ” is the interval representing the criticaldifference between two test results for the same material,obtained by different operators using different equipment indifferent laboratories.10.1.2.1 Reproducibility limits are listed in Table 2.10.1.3 The above terms (repeatability limit and reproduc-ibility limit) are used as specified in Practice E177.10.1.4 Any judgment in accordance with statements 10.1.1and 10.1.2 would normally have an approximate 95 % prob-ability of being correct, however the precision statistics ob-tained in this ILS must not be treated as exact mathematicalquantities which are applicable to all circumstances and uses.The limited number of laboratories reporting results guaranteesthat there will be times when differences greater than predictedby the ILS results will arise, sometimes with considerablygreater or smaller frequency than the 95 % probability limitwould imply. Consider the repeatability limit and the repro-ducibility limit as general guides, and the associated probabil-ity of 95 % as only a rough indicator of what can be expected.10.2  Bias—  At the time of the study, there was no acceptedreference material suitable for determining the bias for this testmethod, therefore no statement on bias is being made.10.3 The precision statement was determined through sta-tistical examination of 180 results, from four laboratories, onnine specimens. These nine specimens were described as thefollowing: Sample 1: ICRI Concrete Surface Profile CSP 1 acid etchedSample 2: ICRI Concrete Surface Profile CSP 2 grindingSample 3: ICRI Concrete Surface Profile CSP 3 light shot blastSample 4: ICRI Concrete Surface Profile CSP 4 light scarificationSample 5: ICRI Concrete Surface Profile CSP 5 medium shot blastSample 6: ICRI Concrete Surface Profile CSP 6 mediumscarificationSample 7: ICRI Concrete Surface Profile CSP 7 heavy abrasiveblastSample 8: ICRI Concrete Surface Profile CSP 8 scabbledSample 9: ICRI Concrete Surface Profile CSP 9 heavy scarification To judge the equivalency of two test results, it is recom-mended to choose the sample closest in characteristics to thetest material. 11. Keywords 11.1 comparator; concrete; concrete profiler; micrometer;replica coupon; replica putty; surface profiler; surfaceroughness 6 Supporting data have been filed at ASTM International Headquarters and maybe obtained by requesting Research Report RR:D01-1156. TABLE 1 Difference (mils) Sample Average A RepeatabilityStandardDeviationReproducibilityStandardDeviationRepeatabilityLimitReproducibilityLimitx¯ S r  S R  r R1 17.68 5.51 6.10 15.42 17.072 20.43 7.60 7.79 21.28 21.803 18.53 7.40 7.89 20.71 22.094 28.73 9.42 11.49 26.38 32.165 33.60 12.53 13.76 35.09 38.546 78.95 15.09 18.95 42.24 53.067 119.30 28.58 29.20 80.03 81.778 165.50 24.91 25.40 69.74 71.119 139.68 26.21 27.16 73.39 76.04 A The average of the laboratories’ calculated averages. TABLE 2 Difference (microns)Converted from srcinal measurements in mils to microns(1 mil = 25.4 µm) Sample Average A RepeatabilityStandardDeviationReproducibilityStandardDeviationRepeatabilityLimitReproducibilityLimitx¯ S r  S R  r R1 448.9 139.9 154.8 391.7 433.52 518.8 193.0 197.8 540.5 553.83 470.5 187.9 200.4 526.0 561.54 729.6 239.3 291.7 670.0 816.85 853.4 318.4 349.6 891.4 978.86 2005.3 383.2 481.4 1072.9 1347.87 3030.2 726.0 741.8 2032.7 2076.98 4203.7 632.7 645.1 1771.5 1806.29 3547.7 665.7 689.8 1864.1 1931.5 A The average of the laboratories’ calculated averages. D7682 − 10 3    ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of 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 and if not revised, either reapproved or withdrawn.Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. If you feel that your comments have not received a fair hearing you should make 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 above address or at 610-832-9585 (phone), 610-832-9555 (fax), or service@astm.org (e-mail); or through the ASTM website (www.astm.org). Permission rights to photocopy the standard may also be secured from the ASTM website (www.astm.org/ COPYRIGHT/). D7682 − 10 4  
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