1、ACI 506.2M-13Specification for ShotcreteAn ACI StandardReported by ACI Committee 506(metric)First PrintingMay 2014Specification for ShotcreteCopyright by the American Concrete Institute, Farmington Hills, MI. All rights reserved. This material may not be reproduced or copied, in whole or part, in an
2、y 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 documents. In spite of these efforts, the user
3、s 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 errata website at www.concrete.org/committees/e
4、rrata.asp. Proper use of this document includes periodically checking for errata for the most up-to-date revisions.ACI committee documents are intended for the use of individuals who are competent to evaluate the significance and limitations of its content and recommendations and who will accept res
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7、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 does not make any representations with rega
8、rd 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 States Occupational Safety and Health Admin
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10、nts 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).American Concrete Institute38800 Country
11、Club DriveFarmington Hills, MI 48331U.S.A.Phone: 248-848-3700Fax: 248-848-3701www.concrete.orgISBN-13: 978-0-87031-893-1American Concrete InstituteAdvancing concrete knowledge*Task group members who produced this specification.Task group Chair who produced this specification.This specification conta
12、ins the construction requirements for the application of shotcrete. Both wet- and dry-mixture shotcrete are addressed, as well as fiber-reinforced shotcrete. The minimum stan-dard for materials, properties, testing, and application are covered.The materials, processes, quality control measures, and
13、inspec-tions described in this specification should be tested, monitored, or performed as applicable only by individuals holding the appro-priate ACI certifications or equivalent.Keywords: dry-mixture shotcrete; fiber-reinforced shotcrete; nozzleman; qualification; quality control; quality assurance
14、; shooting; wet-mixture shotcrete.CONTENTS(mandatory portion follows)PART 1GENERAL, p. 21.1Scope, p. 21.2Definitions, p. 21.3Referenced standards, p. 21.4Submittals, p. 31.5Preconstruction testing by Contractor, p. 41.6Testing during construction, p. 41.7Delivery, storage, and handling, p. 5PART 2PR
15、ODUCTS, p. 52.1Materials, p. 52.2Packaged shotcrete materials, p. 52.3Fiber-reinforced shotcrete, p. 52.4Shotcrete properties, p. 52.5Proportioning, p. 62.6Batching, mixing, and delivery, p. 6PART 3EXECUTION, p. 63.1Preparation of surface to receive shotcrete, p. 63.2Joints, p. 63.3Alignment control
16、, p. 63.4Application, p. 6ACI 506.2M-13Specification for ShotcreteAn ACI StandardReported by ACI Committee 506Lawrence J. Totten, Chair Marc Jolin*, SecretaryJon B. Ardahl*Lars Balck, Jr.Michael BallouNemkumar BanthiaChris D. BreedsWern-Ping Nick ChenScott R. Cumming*Jean-Francios DufourJill E. Glas
17、sgoldCharles S. Hanskat*Warren L. HarrisonThomas HenningsKristian LoevlieMark R. LukkarilaGregory S. McKinnonJeffrey L. NovakH. Celik OzyildirimHarvey W. ParkerRyan E. PooleJohn H. PyeJames A. Ragland*Venkataswamy RamakrishnanRaymond C. Schallom, IIIRaymond J. SchutzPhilip T. SeabrookW. L. Snow, Sr.
18、*Peter C. Tatnall*Curtis WhitePeter T. YenGeorge YoggyLihe ZhangChristopher M. ZyndaSubcommittee memberDonald M. McPheeConsulting membersMerlyn IsaakRichard A. KadenRoman MalinowskiDudley R. Morgan1ACI Committee Reports, Guides, and Commentaries are intended for guidance in planning, designing, exec
19、uting, and inspecting construction. This document is intended for the use of individuals who are competent to evaluate the significance and limitations of its content and recommendations and who will accept responsibility for the application of the material it contains. The American Concrete Institu
20、te disclaims any and all responsibility for the stated principles. The Institute shall not be liable for any loss or damage arising therefrom.Reference to this document shall not be made in contract documents. If items found in this document are desired by the Architect/Engineer to be a part of the
21、contract documents, they shall be restated in mandatory language for incorporation by the Architect/Engineer.ACI 506.2M-13 supersedes ACI 506.2-95 and was adopted on October 29, 2013 and published in May 2014.Copyright 2014 American Concrete InstituteAll rights reserved including rights of reproduct
22、ion 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 for sound or visual reproduc-tion or for use in any knowledge or retrieval system or device, unless permission in writing is ob
23、tained from the copyright proprietors.3.5Finish, p. 73.6Curing, p. 73.7Protection, p. 83.8Tolerances, p. 83.9Repair of shotcrete, p. 83.10Acceptance of Work, p. 8(nonmandatory portion follows)NOTES TO SPECIFIER, p. 8General notes, p. 8FOREWORD TO CHECKLISTS, p. 9CHECKLIST REFERENCES, p. 12(mandatory
24、 portion follows)PART 1GENERAL1.1Scope1.1.1 Work specifiedThis Reference Specification covers the requirements for shotcrete as specified by the Archi-tect/Engineer. Included are the requirements for materials; proportioning; and application of structural and nonstruc-tural shotcrete, including stru
25、ctural and nonstructural fiber-reinforced shotcrete.1.1.2 UnitsValues in this specification are stated in SI units. A companion specification in inch-pound units is also available.1.2Definitionsaccepteddetermined to be satisfactory by Owner or Architect/Engineer.Architect/Engineerthe architect, engi
26、neer, architec -tural firm, engineering firm, or architectural and engineering firm issuing Contract Documents or administering the Work under Contract Documents, or both.Contract Documentsset of documents supplied by Owner to Contractor as the basis for construction; these documents contain contrac
27、t forms, contract conditions, specifications, drawings, addenda, and contract changes.Contractorthe person, firm, or corporation with whom the Owner enters into an agreement for construction of the Work.fiber-reinforced shotcrete (FRS)shotcrete containing discontinuous discrete fibers.gun finishundi
28、sturbed final layer of shotcrete as applied from a nozzle without further finishing.overspraywaste shotcrete material deposited away from intended receiving surface.Ownerthe corporation, association, partnership, indi-vidual, public body, or authority with whom the Contractor enters into an agreemen
29、t and for whom the Work is provided.permittedaccepted by or acceptable to Architect/Engi -neer; usually pertains to a request by Contractor, or when specified in Contract Documents.predampeningin the dry-mixture process, adding water to the aggregate before mixing to bring its moisture content to a
30、specified amount, usually 3 to 6 percent.quality assuranceactions taken by Owner or Owners representative to assure Work done and materials provided are in accordance with Contract Documents.quality controlactions taken by the Contractor to assure that Work meets requirements of Contract Documents.R
31、eference Specificationa standardized mandatory-language document prescribing materials, dimensions, and workmanship, incorporated by reference in Contract Documents.Reference Standardsstandardized mandatory-language documents of a technical society, organization, or association, including building c
32、odes of local or state author-ities, which are referenced by the Contract Documents.requiredstipulated in this specification or the Contract Documents.rod finisha sharp-edged cutting screed to be used to trim shotcrete forms or ground wires.shotcreteconcrete or mortar conveyed through a hose and pne
33、umatically projected at high velocity onto a surface to achieve compaction.structural shotcreteplain or reinforced shotcrete in a member that is part of a structural system required to transfer gravity and/or lateral loads along a path to the ground.submitprovide to Architect/Engineer for review.sub
34、mittaldocuments or materials provided to Archi-tect/Engineer for review and/or acceptance.Workthe entire construction or separately identifi-able parts thereof required to be furnished under Contract Documents.1.3Referenced standardsStandards of ASTM International cited in this Specifica-tion are li
35、sted by name and designation, including year.ASTM InternationalA185/A185M-07Standard Specification for Steel Welded Wire Reinforcement, Plain, for ConcreteA615/A615M-12Standard Specification for Deformed and Plain Carbon-Steel Bars for Concrete ReinforcementA706/A706M-09bStandard Specification for L
36、ow-Alloy Steel Deformed and Plain Bars for Concrete ReinforcementC33/C33M-13Standard Specification for Concrete AggregatesC78/C78M-10e1Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third Point LoadingC42/C42M-13Standard Test Method for Obtaining and Testing Drilled C
37、ores and Sawed Beams of ConcreteC94/C94M-13aStandard Specification for Ready-Mixed ConcreteC127-12Standard Test Method for Density, Rela -tive Density (Specific Gravity), and Absorption of Coarse AggregateC128-12Standard Test Method for Density, Rela -tive Density (Specific Gravity), and Absorption
38、of Fine AggregateAmerican Concrete Institute Copyrighted Materialwww.concrete.org2 SPECIFICATION FOR SHOTCRETE (ACI 506.2M-13)C150/C150M-12Standard Specification for Portland CementC171-07Standard Specification for Sheet Materials for Curing ConcreteC231/C231M-10Standard Test Method for Air Content
39、of Freshly Mixed Concrete by the Pressure MethodC309-11Standard Specification for Liquid Membrane-Forming Compounds for Curing ConcreteC494/C494M-13Standard Specification for Chemical Admixtures for ConcreteC457/C457M-12Standard Test Method for Microscop-ical Determination of Parameters of the Air-V
40、oid System in Hardened ConcreteC618-12aStandard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in ConcreteC642-13Standard Test Method for Density, Absorption, and Voids in Hardened ConcreteC685/C685M-11Standard Specification for Concrete made by Volumetric Batching and C
41、ontinuous MixingC928/C928M-09Standard Specification for Packaged, Dry, Rapid-Hardening Cementitious Materials for Concrete RepairsC989/C989M-12aStandard Specification for Slag Cement for Use in Concrete and MortarsC1059/C1059M-99 (2008)Standard Specification for Latex Agents for Bonding Fresh to Har
42、dened Concrete.C1064/C1064M-12Standard Test Method for Tempera-ture of Freshly Mixed Hydraulic -Cement ConcreteC1077-13bStandard Practice for Laboratories Agency Testing Concrete and Concrete Aggregates for Use in Construction and Criteria for Testing Agency EvaluationC1116/C1116M-10aStandard Specif
43、ication for Fiber-Reinforced ConcreteC1140/C1140M-11Standard Practice for Preparing and Testing Specimens from Shotcrete Test PanelsC1141/C1141M-08Standard Specification for Admix-tures for ShotcreteC1240-12Standard Specification for Silica Fume Used in Cementitious MixturesC1315-11Standard Specific
44、ation for Liquid Membrane-Forming Compounds Having Special Properties for Curing and Sealing ConcreteC1385/C1385M-10Standard Practice for Sampling Materials for ShotcreteC1399/C1399M-10Standard Test Method for Obtaining Average Residual-Strength for Fiber-Reinforced ConcreteC1436-08Standard Specific
45、ation for Materials for ShotcreteC1480/C1480M-12Standard Specification for Pack-aged, Pre-Blended, Dry, Combined Materials for Use in Wet or Dry Shotcrete ApplicationC1550-12aStandard Test Method for Flexural Tough-ness of Fiber Reinforced Concrete (Using Centrally Loaded Round Panel)C1583/C1583M-13
46、Standard Test Method for Tensile Strength of Concrete Surfaces and the Bond Strength or Tensile Strength of Concrete Repair and Overlay Materials by Direct Tension (Pull off Method)C1602/C1602M-12Standard Specification for Mixing Water Used in the Production of Hydraulic Cement ConcreteC1604/C1604M-
47、05(2012)Standard Test Method for Obtaining and Testing Drilled Cores of ShotcreteC1609/C1609M-12Standard Test Method for Flexural Performance of Fiber-Reinforced Concrete (Using Beam with Third-Point Loading)1.4Submittals1.4.1 Submit data showing compliance with requirements specified in 1.4.1.1 thr
48、ough 1.4.1.17. Where available, submit material safety data sheets (MSDS) for all materials.1.4.1.1 Submit shotcrete mixture proportions. Submittals shall show constituent proportions by mass in the case of batching by weight or proportions by volume in the case of volumetric batching. For prepackag
49、ed materials meeting ASTM C1480/C1480M, submit suppliers technical data showing compliance with requirements.1.4.1.2 Submit compressive strength test results and, if fiber-reinforced shotcrete (FRS) is specified, flexural strength and flexural parameters in accordance with the Contract Documents.1.4.1.3 Submit water-cementitious materials ratio (w/cm) for wet-mixture shotcrete only.1.4.1.4 Submit admixture types, brand names, producers, manufacturers technical data sheets describing technical
