ACI 548 12-2012 Specification for Bonding Hardened Concrete and Steel to Hardened Concrete with an Epoxy Adhesive.pdf

1、ACI 548.12-12Specification for Bonding Hardened Concrete and Steel to Hardened Concrete with an Epoxy AdhesiveAn ACI StandardReported by ACI Committee 548First PrintingMarch 2013Specification for Bonding Hardened Concrete and Steel to Hardened Concrete with an Epoxy AdhesiveCopyright by the American

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11、 reports are gathered together in the annually revised ACI Manual of Concrete Practice (MCP).American Concrete Institute38800 Country Club DriveFarmington Hills, MI 48331U.S.A.Phone: 248-848-3700Fax: 248-848-3701www.concrete.orgISBN-13: 978-0-87031-807-8ISBN: 0-87031-807-1American Concrete Institute

12、Advancing concrete knowledgeThis specification addresses bonding hardened concrete and steel to hardened concrete with an epoxy adhesive as defined for this purpose in ASTM C881. Included are controls for adhesive labeling, storage, handling, mixing and application, surface evalu-ation and preparati

13、on, as well as inspection and quality control.The materials, processes, quality control measures, and inspec-tions described in this document should be tested, monitored, or performed as applicable only by individuals holding the appro-priate ACI certifications or equivalent.Keywords: adhesive; bond

14、; construction; epoxy; quality control; repair; safety; steel.CONTENTS(mandatory portion follows)Part 1General, p. 21.1Scope, p. 21.2Definitions, p. 21.3Referenced standards, p. 21.4Submittals, p. 21.5Product delivery, storage, and handling, p. 21.6Project conditions, p. 2Part 2Products, p. 22.1Mate

15、rials, p. 2Part 3Execution, p. 33.1Preparation, p. 33.2Inspection and testing, p. 33.3Adhesive mixtures, p. 33.4Adhesive application, p. 33.5Cleanup, p. 33.6Safety, p. 3(nonmandatory portion follows)Notes to specifier, p. 4General notes, p. 4ACI 548.12-12Specification for Bonding Hardened Concrete a

16、nd Steel to Hardened Concrete with an Epoxy AdhesiveAn ACI StandardReported by ACI Committee 548Bradley NemunaitisChairMahmoud M. Reda TahaSecretaryAshraf I. AhmedMohammad A. AlhassanMilton D. AndersonJacques A. BertrandConstantin BodeaTimothy BowerDavid W. FowlerRobert W. GaulQuentin L. HibbenAlber

17、t O. KaedingJohn R. MillironMyles A. MurrayJoseph A. Nuciforo Jr.John R. RobinsonMichael L. SchmidtQizhong ShengJoe SolomonMichael M. SprinkelMichael S. StenkoDonald P. TragianeseWafeek S. WahbyDavid WhiteDavid P. WhitneyRichard E. WollmershauserConsulting MembersLu AnqiCraig A. BallingerJohn J. Bar

18、tholomewShashi P. BhatnagarZhi-Yuan ChenInz Lech CzarneckiHarold (Dan) R. EdwardsLarry J. FarrellJack J. FontanaGeorge HoreczkoDavid P. HuBert Paul KreikemansDeon KrugerWilliam LeeTroy Douglas MadeleyHenry N. Marsh Jr.Peter MendisPeter J. MossYoshihiko OhamaKelly M. PageJerzy PietrzykowskiRichard C.

19、 PrusinskiHamid SaadatmaneshDonald A. SchmidtMeyer SteinbergHarold H. Weber Jr.1ACI 548.12-12 supersedes ACI 503.1-92 and was adopted December 2012 and published March 2013.Copyright 2012, American Concrete Institute.All rights reserved including rights of reproduction and use in any form or by any

20、means, including the making of copies by any photo process, or by electronic or mechanical device, printed, written, or oral, or recording for sound or visual repro-duction or for use in any knowledge or retrieval system or device, unless permission in writing is obtained from the copyright propriet

21、ors.Foreword to checklists, p. 4Mandatory requirements checklist, p. 5Optional requirements checklist, p. 5Submittals checklist, p. 5(mandatory portion follows)PART 1GENERAL1.1Scope1.1.1 This specification covers the bonding of hardened concrete and steel to hardened concrete with an epoxy adhe-sive

22、. This specification does not apply to anchoring dowels or anchors in concrete.1.1.2 The provisions of this specification shall govern unless otherwise specified in Contract Documents. In case of conflicting requirements, Contract Documents shall govern.1.1.3 Values in this specification are stated

23、in inch-pound units. A companion specification in SI units is also available.1.2DefinitionsACI provides a comprehensive list of definitions through an online resource, “ACI Concrete Terminology,” http:/terminology.concrete.org. Definitions provided herein complement that resource.accepteddetermined

24、to be satisfactory by Architect/Engineer.Architect/Engineerarchitect, engineer, architectural firm, engineering firm, or architectural and engineering firm issuing Contract Documents, administering the Work under Contract Documents, or both.Contract Documentsset of documents supplied by Owner to Con

25、tractor as the basis for construction; these documents contain contract forms, contract conditions, specifications, drawings, addenda, and contract changes.Contractorperson, firm, or entity under contract for construction of Work.epoxythermosetting polymer that is the reaction product of epoxy resin

26、 and hardener.Ownercorporation, association, partnership, individual, public body, or authority for whom Work is constructed.submittaldocument or material provided to Architect/Engineer for review or acceptance.submitprovide to Architect/Engineer for review.Workentire construction or separately iden

27、tifiable parts thereof required to be furnished under Contract Documents.1.3Referenced standardsStandards of ASTM International, International Organi-zation for Standardization, and The Society for Protective Coatings referred to in this standard are listed with serial designation, including year of

28、 adoption or revision.ASTM InternationalASTM C881/C881M-10Standard Specification for Epoxy-Resin-Base Bonding Systems for ConcreteASTM C1583/C1583M-04Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Mate-rials by

29、Direct Tension (Pull-off Method)ASTM D4263-83(2012)Standard Test Method for Indi-cating Moisture in Concrete by the Plastic Sheet MethodThe Society for Protective CoatingsVIS 1-2002Guide and Reference Photographs for Steel Surfaces Prepared by Dry Abrasive Blast CleaningSP 1-1982(2004)Surface Prepar

30、ation Specification No. 1, Solvent CleaningSP 2-1982(2004)Surface Preparation Specification No. 2, Hand Tool CleaningSP 3-1982(2004)Surface Preparation Specification No. 3, Power Tool CleaningSP 6/NACE No. 3-2006Surface Preparation Specifica-tion No. 6, Commercial Blast CleaningThese publications ma

31、y be obtained from:ASTM International100 Barr Harbor DriveWest Conshohocken, PA 19428www.astm.orgThe Society for Protective Coatings (SSPC)40 24th Street, 6th FloorPittsburgh, PA 15222www.sspc.org1.4Submittals1.4.1 CertificationsSubmit manufacturers certification verifying conformance to material sp

32、ecifications.1.4.2 Application controlSubmit mixing and applica-tion procedures for acceptance prior to use.1.4.3 DataSubmit technical data sheets and material safety data sheets (MSDS).1.5Product delivery, storage, and handling1.5.1 Delivery of materialsDeliver all materials in sealed containers wi

33、th labels legible and intact.1.5.2 LabelingClearly mark all containers with the following information:(a) Name of manufacturer;(b) Manufacturers product identification;(c) Manufacturers instructions for mixing;(d) Warning for handling and toxicity; and(e) Expiration date and lot number.1.5.3 Storage

34、 of materialsStore materials at tempera-tures between 40 and 100F (4.4 and 37.8C), unless other-wise specified.1.5.4 Handling of materialsHandle materials in a manner that complies with the MSDS and manufacturers recommendations.1.6Project conditions1.6.1 Environmental requirementsComply with manu-f

35、acturers recommendations regarding environmental condi-tions under which the epoxy adhesive shall be applied, unless otherwise specified.American Concrete Institute Copyrighted Materialwww.concrete.org2 SPECIFICATION FOR BONDING HARDENED CONCRETE AND STEEL TO HARDENED CONCRETE (ACI 548.12-12)PART 2P

36、RODUCTS2.1Materials2.1.1 Epoxy adhesiveUse ASTM C881/C881M Type I for non-load-bearing applications or Type IV for load-bearing applications. Curing temperature requirements (class) shall be based on project conditions. Use Grade 2 (medium viscosity) or Grade 3 (nonsag) for bonding hori-zontal or ve

37、rtical mating surfaces. Use Grade 3 for overhead and nonmating surfaces.PART 3EXECUTION3.1Preparation3.1.1Preparation of concrete surfaces3.1.1.1 Mechanical abrasionConcrete surfaces to which epoxies are to be applied shall be newly prepared concrete free of loose and unsound materials. Prepare surf

38、aces as specified in Contract Documents by use of shotblasting, sandblasting, scarifying, or waterblasting.3.1.2 Preparation of carbon steel surfaces3.1.2.1 Prior to blast-cleaning, clean surfaces according to SSPC SP l, SP 2, and SP 3, as required.3.1.2.2 Blast-clean carbon steel surfaces using SSP

39、C SP 6/NACE No. 3 to provide a surface condition corresponding to ASa2, BSa2, and CSa2 of SSPC-VIS 1, depending on the initial surface condition of the steel surface. Use sand abra-sive media.3.1.2.3 Remove blast-cleaning residue with compressed air from an oil- and water-free compressed air source

40、or by vacuuming.3.1.3 Preparation of galvanized steel surfaces3.1.3.1 Scrub galvanized steel surfaces thoroughly in accordance with SSPC SP l.3.1.3.2 For galvanized steel surfaces showing signs of subsurface corrosion, blast-clean as specified in 3.1.2 for carbon steel.3.2Inspection and testing3.2.1

41、 Inspection of concrete surfaces3.2.1.1 Inspect all concrete surfaces prior to application of epoxy adhesive.3.2.1.2 Concrete surfaces shall be sound and free of loose material.3.2.1.3 Concrete surfaces shall be free of any deleterious materials such as laitance, curing compounds, dust, dirt, and oi

42、l.3.2.1.4 At the time of installation, surface temperature of the concrete shall be within the limits recommended by the adhesive manufacturer.3.2.1.5 All concrete surfaces shall be dry. Evaluate mois-ture content of concrete in accordance with ASTM D4263, except a 4 x 4 ft (1.2192 x 1.2192 m) polye

43、thylene sheet shall be used. Do not apply epoxy adhesive until the test results indicate no moisture within the epoxy curing time period.3.2.2 Inspection of steel surfaces3.2.2.1 Inspect all steel surfaces prior to application of epoxy adhesive.3.2.2.2 Steel surfaces shall be dry, sound, and free of

44、 loose material.3.2.2.3 At the time of installation, surface temperature of the steel shall be within the limits recommended by the adhesive manufacturer.3.2.3 Testing of concrete and steel surfaces3.2.3.1 Test prepared surfaces for tensile strength and bonded surfaces for bond strength in accordanc

45、e with ASTM C1583/C1583M.3.3Adhesive mixtures3.3.1 Mix epoxy components in accordance with manu-facturers recommendations.3.3.2 Condition epoxy components to a temperature consistent with manufacturers recommendations.3.3.3 Blend epoxy components to a uniform and homoge-neous mixture.3.4Adhesive app

46、lication3.4.1 Apply epoxy adhesive to concrete surface by brush, roller, broom, squeegee, or spray equipment. The applica-tion method should not entrap air. Apply epoxy adhesive at a thickness sufficient to fill, with slight excess, the gap between the substrate and the element to be bonded. Do not

47、exceed the manufacturers thickness recommendations. Protect concrete surfaces against spillage beyond limits of surface receiving adhesive.3.4.2 Fasten or shore elements to be bonded when move-ment is likely to occur, such as elements on sloping, vertical, or overhead positions. Shoring and bracing

48、elements should not induce deflections that may cause the elements to debond when removed.3.4.3 Apply epoxy adhesive and position elements to be bonded within the contact time of the epoxy adhesive as recommended by the manufacturer. If epoxy compound cures to the extent of losing its tack before el

49、ements are in contact with the adhesive, follow the manufacturers recom-mendations with respect to removing or slightly abrading the first coat and applying a second coat.3.4.4 Do not disturb elements being bonded until the adhe-sive has attained required strength according to Contract Documents.3.5Cleanup3.5.1 Remove any epoxy adhesive applied or spilled beyond desired areas. Perform cleanup with material desig-nated by epoxy adhesive manufacturer. Avoid contamination of work area.3.5.2 Unused materials shall be dispos