ACI 350.5-2012 Specifications for Environmental Concrete Structures.pdf

1、ACI 350.5-12Specifications for EnvironmentalConcrete StructuresAn ACI StandardReported by ACI Committee 350First PrintingApril 2013Specifications for Environmental Concrete StructuresCopyright by the American Concrete Institute, Farmington Hills, MI. All rights reserved. This material may not be rep

2、roduced or copied, in whole or part, in any printed, mechanical, electronic, film, or other distribution and storage media, without the written consent of ACI.The technical committees responsible for ACI committee reports and standards strive to avoid ambiguities, omissions, and errors in these docu

3、ments. In spite of these efforts, the users of ACI documents occasionally find information or requirements that may be subject to more than one interpretation or may be incomplete or incorrect. Users who have suggestions for the improvement of ACI documents are requested to contact ACI via the errat

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7、con-sequential damages, including without limitation, lost revenues or lost profits, which may result from the use of this publication.It is the responsibility of the user of this document to establish health and safety practices appropriate to the specific circumstances involved with its use. ACI d

8、oes not make any representations with regard to health and safety issues and the use of this document. The user must determine the applicability of all regulatory limitations before applying the document and must comply with all applicable laws and regulations, including but not limited to, United S

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10、 it develops.Order information: ACI documents are available in print, by download, on CD-ROM, through electronic subscription, or reprint and may be obtained by contacting ACI.Most ACI standards and committee reports are gathered together in the annually revised ACI Manual of Concrete Practice (MCP)

11、.American Concrete Institute38800 Country Club DriveFarmington Hills, MI 48331U.S.A.Phone: 248-848-3700Fax: 248-848-3701www.concrete.orgISBN-13: 978-0-87031-809-2ISBN: 0-87031-809-8American Concrete InstituteAdvancing concrete knowledgeThis specification is a Reference Specification that the Archite

12、ct/Engineer can make applicable to a construction project by citing it in the Project Specifications. The Architect/Engineer supplements the provisions of this Reference Specification as needed by desig-nating or specifying individual project requirements.The document covers materials and proportion

13、ing of concrete; reinforcement and prestressing reinforcement; production, placing, finishing, and curing of concrete; formwork design and construc-tion; and shotcrete. Methods of treatment of joints and embedded items, repair of surface defects, and finishing of formed and unformed surfaces are spe

14、cified. Separate sections are devoted to architectural concrete, mass concrete, and internal and external post-tensioned prestressed concrete. Provisions governing testing, evaluation, and acceptance of concrete as well as acceptance of the structure are included.Keywords: admixtures; aggregates; ai

15、r entrainment; architectural concrete; compressive strength; consolidation; curing; density; durability; evalua-tion; environmental concrete; finishes; floors; formwork (construction); grouting; inspection; joints; mass concrete; mixture proportioning; post-tensioned prestressed concrete; prestressi

16、ng reinforcement; reinforcing steels; reshoring; shoring; subgrades; tolerances.CONTENTSSection 1General requirements, p. 31.1Scope1.1.1Work specified1.1.2Work not specified1.2Definitions1.3Reference standards1.4Standards-producing organizations1.5Submittals1.5.1General1.5.2Testing agency reports1.6

17、Quality assurance1.6.1General1.6.2Testing agencies1.6.3Testing responsibilities of Contractor1.6.4Testing responsibilities of Owners Testing Agency1.6.5Tests on hardened concrete in-place1.6.6Evaluation of concrete strength tests1.6.7Acceptance of concrete strength1.6.8Field acceptance of concrete1.

18、7Acceptance of structure1.7.1General1.7.2Dimensional tolerancesACI 350.5-12Specifications for Environmental Concrete StructuresAn ACI StandardReported by ACI Committee 350Satish K. Sachdev*, ChairJon B. Ardahl, Vice ChairJohn W. Baker*, SecretaryIyad M. AlsamsamSteven R. Close*Robert E. DoyleAnthony

19、 L. Felder*Carl A. GentryCharles S. Hanskat*Kenneth R. HarveyPaul HedliKeith W. JacobsonM. Reza KianoushRamon E. LuceroDaniel J. McCarthyAndrew R. MinogueKhalid MotiwalaJaveed MunshiJerry ParnesRisto ProticWilliam C. Sherman*Lawrence M. Tabat*William A. WallaceSubcommittee membersErik LedermanKyle S

20、. LoydEdwin W. NeelyVictor M. PavonDavid R. PooleShashiprakash SuraliBryan T. WoodConsulting membersWilliam H. BackousWalter N. BennettPatrick J. CreeganJerry A. HolandWilliam J. IrwinDov KaminetzkyDavid G. KittridgeDennis C. KohlNicholas A. LegatosCarl H. MoonLawrence G. MrazekTerry PatziasAndrew R

21、. Philip*Subcommittee members who developed this document.Subcommittee chair during development of this document.Note: Special acknowledgement to Vijai Prakash Gupta, Larry Kaiser, William Moore, and Paul St. John for their contributions to this document.1ACI 350.5-12 became effective September 24,

22、2012, and was published April 2013.Copyright 2013 American Concrete Institute.All rights reserved including rights of reproduction and use in any form or by any means, including the making of copies by any photo process, or by electronic or mechanical device, printed, written, or oral, or recording

23、for sound or visual reproduc-tion or for use in any knowledge or retrieval system or device, unless permission in writing is obtained from the copyright proprietors.1.7.3Appearance1.7.4Strength of structure1.7.5Durability1.8Protection of in-place concrete1.8.1Loading and support of concrete1.8.2Prot

24、ection from mechanical injurySection 2Formwork and formwork accessories, p. 102.1General2.1.1Description2.1.2Submittals2.2Products2.2.1Materials2.2.2Performance and design requirements2.2.3Fabrication and manufacture2.3Execution2.3.1Construction and erection of formwork2.3.2Removal of formwork2.3.3R

25、eshoring and backshoring2.3.4Strength of concrete required for removal of formwork2.3.5Field quality controlSection 3Reinforcement and reinforcement supports, p. 123.1General3.1.1Submittals, data, and drawings3.1.2Materials delivery, storage, and handling3.2Products3.2.1Materials3.2.2Fabrication3.3E

26、xecution3.3.1Preparation3.3.2PlacementSection 4Joints and accessories, p. 164.1General4.1.1Description4.1.2Submittals4.2Products4.2.1Materials4.2.2Performance and design requirements4.3Execution4.3.1General4.3.2Construction joints and other bonded joints4.3.3Contraction joints4.3.4Expansion joints4.

27、3.5Waterstops4.3.6Smooth dowelsSection 5Concrete mixtures, p. 185.1General5.1.1Description5.1.2Submittals5.1.3Quality control5.1.4Materials storage and handling5.2Products5.2.1Materials5.2.2Performance and design requirements5.2.3Proportioning5.3Execution5.3.1Measuring, batching, and mixing5.3.2Deli

28、verySection 6Handling, placing, and constructing, p. 226.1General6.1.1Description6.1.2Submittals6.1.3Delivery, storage, and handling6.2Products6.2.1Materials6.3Execution6.3.1Preparation6.3.2Placement of concrete6.3.3Finishing formed surfaces6.3.4Finishing unformed surfaces6.3.5Curing and protection6

29、.3.6Repair of surface defectsSection 7Architectural concrete, p. 287.1General7.1.1Description7.1.2Submittals7.1.3Quality assurance7.1.4Product delivery, storage, and handling7.1.5Project conditions7.2Products7.2.1Materials7.2.2Performance and design requirements7.3Execution7.3.1Preparation7.3.2Propo

30、rtioning concrete mixtures7.3.3Consolidation7.3.4Formwork monitoring7.3.5Formwork removal7.3.6Repair of tie holes and surface defects7.3.7FinishingSection 8Mass concrete, p. 308.1General8.1.1Description8.1.2Submittals8.2Products8.2.1Materials8.2.2Performance and design requirements8.3Execution8.3.1P

31、lacement8.3.2Curing and protectionSection 9Internal post-tensioned concrete, p. 319.1General9.1.1Description9.1.2Submittals9.1.3Quality controlAmerican Concrete Institute Copyrighted Materialwww.concrete.org2 SpECIFICATIONS FOR ENvIRONMENTAl CONCRETE STRuCTuRES (ACI 350.5-12)9.1.4Product handling an

32、d storage9.2Products9.2.1Materials9.2.2Proportioning of cementitious grout mixtures9.2.3Proportioning of epoxy grout mixtures9.3Execution9.3.1Field observations9.3.2Grouted tendon installation9.3.3Grouting9.3.4Unbonded tendon installation9.3.5Tendon tolerances9.3.6Concrete placement9.3.7Tensioning9.

33、3.8Tendon finishingSection 10External prestressed wrapped concrete tanks, p. 3810.1General10.1.1Description10.1.2Submittals10.1.3Quality control10.1.4Product delivery, handling, and storage10.2Products10.2.1Materials10.2.2Proportioning of concrete and shotcrete mixtures10.3Execution10.3.1PlacementNo

34、tes to Specifier, p. 40General notesForeword to Checklists, p. 40Mandatory Requirements Checklist, p. 43Optional Requirements Checklist, p. 44Submittals Checklist, p. 52(Mandatory portion follows)SECTION 1GENERAl REQuIREMENTS1.1Scope1.1.1 Work specifiedThis specification covers cast-in-place environ

35、mental concrete and shotcrete. Provisions of this specification shall govern except where other provisions are specified in Contract Documents.1.1.2 Work not specifiedThe following subjects are not in the scope of this specification:a) Precast concrete productsb) Heavyweight shielding concretec) Sli

36、pformed paving concreted) Lightweight concretee) Shrinkage-compensating concretef) Terrazzog) Insulating concreteh) Refractory concretei) Self-consolidating concretej) Slipformed concrete wallsk) Tilt-up concrete construction1.2Definitionsaccepteddetermined to be satisfactory by Architect/Engineer.A

37、CI Concrete Field Testing Technician Grade Ia person who has demonstrated knowledge and ability to perform and record the results of ASTM standard tests on freshly mixed concrete and to make and cure test speci-mens. Such knowledge and ability shall be demonstrated by passing prescribed written and

38、performance examinations and having credentials that are current with ACI.ACI Reference Specificationa standardized manda-tory-language document prescribing materials, dimensions, and workmanship incorporated by reference in contract documents with information in the Mandatory Require-ments Checklis

39、t required to be provided in the Project Specification.Architect/EngineerArchitect, Engineer, architectural firm, engineering firm, or architectural and engineering firm issuing Contract Documents, administering the Work under Contract Documents, or both.architectural concreteconcrete designated by

40、Archi-tect/Engineer as requiring a specified appearance.backshoresshores placed snugly under a concrete slab or structural member after the original formwork and shores have been removed from a small area at a time, without allowing the slab or member to deflect, or support its own weight or existin

41、g construction loads.Contract Documentsa set of documents supplied by Owner to Contractor 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 construct

42、ion of the Work.core wallportion of the externally prestressed circular concrete tank wall placed in circumferential compression by prestressing.cover coatthe layer or layers of shotcrete applied over the wire coat of an externally prestressed circular concrete tank wall.diaphragmthin metal sheet fo

43、rmed with vertical ribs embedded within the core wall of circular externally prestressed concrete tanks.ducta conduit (plain or corrugated) to accommodate prestressing steel for post-tensioned installation.exposed to viewportion of structure that can be observed by the user during normal use.finish

44、coatfinal layer of shotcrete placed on the cover coat of an externally prestressed circular concrete tank wall.high-early-strength concreteconcrete that, through the use of ASTM C150 Type III cement or admixtures, is capable of attaining specified strength at an earlier age than normal concrete.envi

45、ronmental engineering concrete structuresconcrete structures intended for conveying, storing, or treating water, wastewater, or other nonhazardous liquids, and for secondary containment of hazardous materials.American Concrete Institute Copyrighted Materialwww.concrete.orgSpECIFICATIONS FOR ENvIRONM

46、ENTAl CONCRETE STRuCTuRES (ACI 350.5-12) 3Licensed Design Engineeran individual engaged by the Contractor who is licensed to practice engineering as defined by the statutory requirements of the licensing laws of the state or jurisdiction in which the project is to be constructed.mass concretea volum

47、e of concrete with dimensions large enough to require that measures be taken to prevent damage from the generation of heat and temperature gradi-ents from hydration of the cementitious materials and atten-dant volume change.normalweight concreteconcrete containing aggregate that conforms to ASTM C33

48、 and that typically has a density between 135 and 160 lb/ft3.Ownercorporation, association, partnership, individual, public body, or authority for whom the Work is constructed.permittedaccepted or acceptable to Architect/Engineer usually pertaining to a request by Contractor or when speci-fied in Co

49、ntract Documents.plain mass concretemass concrete containing no rein-forcement or less reinforcement than necessary to be consid-ered reinforced mass concrete.post-tensioninga method of prestressing reinforced concrete in which tendons are tensioned after the concrete has attained a specified minimum in-place strength or a specified minimum age.prestressing sheathinga material encasing prestressing steel to p