1、Reported by ACI Committee 503ACI 503.7-07Specification for Crack Repairby Epoxy InjectionAn ACI StandardSpecification for Crack Repair by Epoxy InjectionFirst PrintingSeptember 2007ISBN 978-0-87031-252-6American Concrete InstituteAdvancing concrete knowledgeCopyright by the American Concrete Institu
2、te, Farmington Hills, MI. All rights reserved. This materialmay not be reproduced or copied, in whole or part, in any printed, mechanical, electronic, film, or otherdistribution and storage media, without the written consent of ACI.The technical committees responsible for ACI committee reports and s
3、tandards strive to avoid ambiguities,omissions, and errors in these documents. In spite of these efforts, the users of ACI documents occasionallyfind information or requirements that may be subject to more than one interpretation or may beincomplete or incorrect. Users who have suggestions for the i
4、mprovement of ACI documents arerequested to contact ACI. Proper use of this document includes periodically checking for errata atwww.concrete.org/committees/errata.asp for the most up-to-date revisions.ACI committee documents are intended for the use of individuals who are competent to evaluate thes
5、ignificance and limitations of its content and recommendations and who will accept responsibility for theapplication of the material it contains. Individuals who use this publication in any way assume all risk andaccept total responsibility for the application and use of this information.All informa
6、tion in this publication is provided “as is” without warranty of any kind, either express or implied,including but not limited to, the implied warranties of merchantability, fitness for a particular purpose ornon-infringement.ACI and its members disclaim liability for damages of any kind, including
7、any special, indirect, incidental,or consequential damages, including without limitation, lost revenues or lost profits, which may resultfrom the use of this publication.It is the responsibility of the user of this document to establish health and safety practices appropriate tothe specific circumst
8、ances involved with its use. ACI does not make any representations with regard tohealth and safety issues and the use of this document. The user must determine the applicability of allregulatory limitations before applying the document and must comply with all applicable laws and regulations,includi
9、ng but not limited to, United States Occupational Safety and Health Administration (OSHA) healthand safety standards.Order information: ACI documents are available in print, by download, on CD-ROM, through electronicsubscription, or reprint and may be obtained by contacting ACI.Most ACI standards an
10、d committee reports are gathered together in the annually revised ACI Manual ofConcrete Practice (MCP).American Concrete Institute38800 Country Club DriveFarmington Hills, MI 48331U.S.A.Phone: 248-848-3700Fax: 248-848-3701www.concrete.orgACI 503.7-07 was adopted and published September 2007.Copyrigh
11、t 2007, American Concrete Institute.All rights reserved including rights of reproduction and use in any form or by anymeans, including the making of copies by any photo process, or by electronic ormechanical device, printed, written, or oral, or recording for sound or visual reproductionor for use i
12、n any knowledge or retrieval system or device, unless permission in writingis obtained from the copyright proprietors.503.7-1ACI Committee Reports, Guides, Standard Practices, andCommentaries are intended for guidance in planning,designing, executing, and inspecting construction. Thisdocument is int
13、ended for the use of individuals who arecompetent to evaluate the significance and limitations of itscontent and recommendations and who will acceptresponsibility for the application of the material it contains.The American Concrete Institute disclaims any and allresponsibility for the stated princi
14、ples. The Institute shall notbe liable for any loss or damage arising therefrom.Reference to this document shall not be made in contractdocuments. If items found in this document are desired by theArchitect/Engineer to be a part of the contract documents, theyshall be restated in mandatory language
15、for incorporation bythe Architect/Engineer.Specification for Crack Repair by Epoxy InjectionAn ACI StandardReported by ACI Committee 503ACI 503.7-07This Specification gives requirements for repairing cracks in concrete byinjection of two-component epoxy-resin adhesive.Keywords: adhesive; concrete; c
16、rack; epoxy; repair injection; sealer.NOTES TO SPECIFIERThis Specification is incorporated by reference in theProject Specification using the wording in Section P3 of thePreface and including information from the MandatoryRequirements, Optional Requirements, and SubmittalsChecklists following this S
17、pecification.PREFACEP1. ACI Specification 503.7 is intended to be used byreference or incorporation in its entirety in the ProjectSpecification. Do not copy individual Sections, Parts, Articles,or Paragraphs into the Project Specification, because takingthem out of context may change their meaning.P
18、2. If Sections or Parts of ACI Specification 503.7 arecopied into the Project Specification or any other document,do not refer to them as an ACI Specification, because theSpecification has been altered.P3. A statement such as the following will serve to makeACI Specification 503.7 a part of the Proj
19、ect Specification:“Work on (Project Title) shall conform to all requirementsof ACI Specification 503.7-07, “Specification for CrackRepair by Epoxy Injection,” published by the AmericanConcrete Institute, Farmington Hills, Michigan, except asmodified by these Contract Documents.”P4. Each technical Se
20、ction of ACI Specification 503.7 iswritten in the three-part Section format of the ConstructionSpecifications Institute, as adapted for ACI requirements.The language is imperative and terse.P5. The Specification is written to the Contractor. When aprovision of this Specification requires action by t
21、heContractor, the verb “shall” is used. If the Contractor isallowed to exercise an option when limited alternatives areavailable, the phrasing “eitheror” is used. Statementsprovided in the Specification as information to the Contractoruse the verbs “may” or “will.” Informational statementstypically
22、identify activities or options that “will be taken” or“may be taken” by the Owner or Architect/Engineer.Milton D. Anderson Floyd E. Dimmick, Sr. Peter Mendis W. Glenn SmoakJ. Christopher Ball Jack J. Fontana Brad Nemunaitis Joe SolomonCraig A. Ballinger Robert W. Gaul Kelly M. Page Michael M. Sprink
23、elJohn J. Bartholomew Steven H. Gebler*Federico V. Palma, Jr. D. Gerald WaltersRobert R. Cain Paul R. Hollenbach Suresh Sawant David WhiteFrank J. Constantino Bert P. Kriekemans Raymond J. Schutz Richard E. WollmershauserGlenn W. DePuy Joseph A. McElroy*Deceased.Sheerang N. NabarChairMyles A. Murray
24、Secretary503.7-2 ACI STANDARDCONTENTSSection 1General, p. 503.7-21.1Scope1.2Definitions1.3Reference standards1.4Submittals1.5Quality assurance1.6Delivery and storage of materials1.7Safety and environmental precautionsSection 2Materials, p. 503.7-42.1Surface seal2.2Injection adhesivesSection 3Executi
25、on, p. 503.7-43.1Evaluation and preparation3.2Test injection3.3Surface sealing3.4Injection3.5CleanupForeword to checklists, p. 503.7-5Mandatory requirements checklist, p. 503.7-6Optional requirements checklist, p. 503.7-6Submittal checklist, p. 503.7-7SECTION 1GENERAL1.1ScopeThis Specification cover
26、s the repair of cracks in concreteby pressure-injecting epoxy into cracks that intersect at leastone accessible surface of the concrete or masonry member.It does not cover the repair of delaminations where theintersection of the cracked concrete with the surface of theconcrete member is not accessib
27、le nor can be made accessible.1.2Definitionsaccepteddetermined to be satisfactory by the Architect/Engineer.Architect/Engineerthe architect, engineer, architecturalfirm, or engineering firm issuing Contract Documents oradministering the Work under Contract Documents, or both.bond linethe layer of ad
28、hesive that attaches twoopposing faces of a crack.continuous metering and mixingthe process in whichtwo adhesive components are continuously metered into anddischarged from a mixing chamber.Contract Documentsa set of documents supplied bythe Owner to the Contractor as the basis for construction;thes
29、e documents contain contract forms, contract conditions,specifications, drawings, addenda, and contract changes.crack facethe exposed intersection of a crack and thesurface of the concrete member.crack repairthe work performed to permit the transferof tensile stress across the crack.injection adhesi
30、vethe material that is injected into acrack for the purpose of repair.injection porta device or passageway in the surfaceseal through which the injection adhesive is introduced intoa crack.Project Specificationthe written document that detailsrequirements for the Work in accordance with serviceparam
31、eters and other specific criteria.surface sealthe material that is applied to the crack faceto contain the adhesive during the injection process.Workthe entire construction or separately identifiable partsthereof required to be furnished under Contract Documents.1.3Reference standardsC 42/C 42M-04 S
32、tandard Test Method for Obtaining andTesting Drilled Cores and Sawed Beamsof ConcreteC 496/C 496M-04 Standard Test Method for SplittingTensile Strength of Cylindrical ConcreteSpecimensC 881/C 881M-02 Standard Specification for Epoxy-Resin-Base Bonding Systems for ConcreteD 695-02a Standard Test Meth
33、od for CompressiveProperties of Rigid PlasticsThese standards may be obtained from the followingorganization:ASTM International100 Barr Harbor Drive West Conshohocken, PA 19428-2959www.astm.org1.4Submittals1.4.1 Injection adhesives1.4.1.1 Qualification testingSubmit an independentlaboratory test rep
34、ort, including all test results, certifyingthat the injection adhesive meets all the requirementsspecified in Section 2.2.1.4.1.2 Manufacturers certificationSubmit themanufacturers certification verifying conformance to therequirements of Section 2.2 of each lot of injection adhesiveto be used in th
35、e Work.1.4.1.3 Additional testingSubmit additional testresults when required.1.5Quality assurance1.5.1 Metering accuracyUse equipment or tools forcontinuous (metering) or batch proportioning for the twocomponents of the injection adhesive that are able to establishand maintain a ratio of the compone
36、nts within the tolerancespecified by the manufacturer of the injection adhesiveover the full range of operating pressures and temperatures.If the manufacturer of the adhesive does not specify a tolerancefor the mixture ratio, maintain a mixture ratio within 3%of the nominal mixture ratio specified b
37、y the manufacturerof the adhesive.1.5.2 Qualification test for metering accuracy1.5.2.1 When a continuous metering and mixing pump isrequired, test the metering accuracy of equipment before thestart of the Work to demonstrate that the pump is capable ofSPECIFICATION FOR CRACK REPAIR BY EPOXY INJECTI
38、ON 503.7-3maintaining the ratio within the tolerances required inSection 1.5.1.1.5.2.1.a Conduct the test using a pump dischargepressure that ranges from the lowest to the highest dischargepressure at which the equipment is expected to be operatedduring the injection process.1.5.2.1.b The device use
39、d to measure metering accuracyshall be capable of controlling the discharge pressure of eachof the components separately as they are simultaneouslydischarged into separate containers.1.5.2.1.c Conduct one test by discharging both adhesivecomponents simultaneously into separate containers whilemainta
40、ining a discharge pressure on both components equalto the lowest operating discharge pressure. Conduct a secondtest at the highest operating discharge pressure.1.5.2.1.d Measure injection pressure with a gaugemounted upstream of and within 300 mm (12 in.) of themixing chamber.1.5.2.1.e Discharge a m
41、inimum of 200 g (7 oz) of eachcomponent into separate graduated containers or intocontainers that can be weighed. If the ratio determination ismade by mass, the volumetric ratio may be determined bycalculation using the specific gravity of each component.(The volumetric ratio is determined by multip
42、lying the massratio by the inverse of the ratio of the specific gravities of thecomponents.)1.5.2.2 Demonstrate that the injection equipment doesnot have more than a 35 kPa (5 psi) drop in pressure in eitherof the two component lines after operating with no flow for3 minutes with at least 80% or mor
43、e of the operating pressure.1.5.3 Qualification tests for mixing effectiveness ofequipmentBefore the start of the test injection Work speci-fied in Section 1.5.4, conduct the bond strength 2-day cureand compressive yield and compressive modulus tests inASTM C 881/C 881M on the specified injection ad
44、hesiveprocessed with the equipment and tools to be used to meter,and mix the injection adhesive in the Work. If the test resultsdo not meet the requirements of ASTM C 881/C 881M,modify or replace the equipment.1.5.4 Qualification of injection procedures1.5.4.1 Test injectionAs the first item of Work
45、, repaira test crack selected by the Architect/Engineer not less than3.0 m (10 ft) in total length. If there are no cracks at least 3.0 m(10 ft) in length, the Architect/Engineer will select a numberof shorter cracks whose total length will approximately equal3.0 m (10 ft). Inject the test crack(s)
46、using the specified injectionadhesive. Use the same surface seal, equipment, and applicationmethods that are to be used in executing the Work. Meet therequirements of Section 1.5.7. Do not begin the remaininginjection work until the equipment and application methodsare accepted.1.5.5 Quality control
47、1.5.5.1 Metering accuracy tests for continuous mixingThe first time any piece of two-component continuousmetering and mixing equipment is used in the Work and anytime each piece of equipment is used after a 4-hour or longershutdown period, test two-component continuous meteringand mixing equipment t
48、o demonstrate that the equipment isoperating as required in Sections 1.5.1 and 1.5.2. If the ratioof the two components is not within the specified tolerance,stop injection work until the equipment is brought intocompliance with Section 1.5.1. Maintain a record of all suchtests, including date, time
49、, results of the tests required inSection 1.5.5.1, temperature of each adhesive component, andlocation of the last crack injected before the test performed tocomply with Section 1.5.5.1. Submit the record to the Archi-tect/Engineer at the end of each workday.1.5.5.2 Metering accuracy test for batch mixingForevery batch of adhesive mixed, record the amount of eachcomponent and the total amount of mixed adhesive within3%. Maintain a record of all batches, including date, time,and mixture ratio.1.5.5.3 Injection adhesiveWhen the results of spli
