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1、ACI ITG-4.1-07 Specification for High-Strength Concrete in Moderate to High Seismic Applications Reported by ACI Innovation Task Group 4 and Other Contributors American Concrete Institute Advancing concrete knowledge Specification for High-Strength Concrete in Moderate to High Seismic Applications F
2、irst printing March 2007 ISBN-13: 978-0-87031-238-0 Copyright by the American Concrete Institute, Farmington Hills, MI. All rights reserved. This material may not be reproduced or copied, in whole or part, in any printed, mechanical, electronic, film, or other distribution and storage media, without
3、 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 users of ACI documents occa- sionally find information or requirements that may be subject t
4、o 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. ACI committee documents are intended for the use of individuals who are competent to evaluate the significance and limitations of its conten
5、t and recommendations and who will accept responsibility for the application of the material it contains. Individuals who use this publication in any way assume all risk and accept total responsibility for the application and use of this information. All information in this publication is provided “
6、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 or non-infringement. ACI and its members disclaim liability for damages of any kind, including any special, indirect, incidental,
7、or consequential 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. AC
8、I does 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 regula- tions, including but not limited to, Uni
9、ted States Occupational Safety and Health Administration (OSHA) health and safety standards. 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 ar
10、e gathered together in the annually revised ACI Manual of Concrete Practice (MCP). American Concrete Institute 38800 Country Club Drive Farmington Hills, MI 48331 U.S.A. Phone:248-848-3700 Fax:248-848-3701 www.concrete.org ACI ITG-4.1-07 was adopted November 7, 2006 and published March 2007. Copyrig
11、ht 2007, 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 for sound or visual reproduction or for
12、use in any knowledge or retrieval system or device, unless permission in writing is obtained from the copyright proprietors. ITG-4.1-1 Specification for High-Strength Concrete in Moderate to High Seismic Applications Reported by ACI Innovation Task Group 4 and Other Contributors ACI ITG-4.1-07 This
13、specification is a reference specification that the licensed design professional can make applicable to any construction project by citing it in the project specifications. The licensed design professional supplements the provisions of this reference specification as needed by designating or spec- i
14、fying individual project requirements. This specification covers cast-in-place, normalweight, high-strength concrete in structures that must be designed for moderate to high seismic applications. More specifically, this specification applies to structures: Located in Seismic Zones 2, 3, or 4 defined
15、 by the Uniform Building Code; Assigned to Seismic Performance Categories C, D, or E of the BOCA/ National Building Code (1993 and subsequent editions) or the Standard Building Code (1994 or subsequent editions); or Seismic Design Categories C, D, E or F of the International Building Code or the Nat
16、ional Fire Protection Association (NFPA) 5000 Building Construction and Safety Code. Irrespective of seismic hazard, seismic performance, or design category, these requirements shall apply to normalweight, high-strength concrete in intermediate or special moment frames and intermediate or special st
17、ructural walls. Keywords: curing; high-strength concrete; mixture proportioning; placement; quality control; seismic application; temperature; trial batch. NOTES TO SPECIFIER This specification is incorporated by reference in the project specification using the wording in P3 of the preface and inclu
18、ding information from the mandatory requirements, optional requirements, and submittals checklists following the specification. PREFACE P1. ACI Specification ITG-4.1 is intended to be used by reference or incorporation in its entirety in the project speci- fication. Do not copy individual parts, sec
19、tions, articles, or paragraphs into the project specification, because taking them out of context may change their meaning. P2. If sections or parts of ACI Specification ITG-4.1 are copied into the project specifications or any other document, do not refer to them as an ACI specification because the
20、 specification has been altered. P3. A statement such as the following will serve to make ACI Specification ITG-4.1 a part of the project specification: “Work on (Project Title) shall conform to all requirements of ACI ITG-4.1-XX published by the American Concrete Institute, Farmington Hills, Michig
21、an, except as modified by these contract documents.” P4. Each technical section of ACI Specification ITG-4.1 is written in the three-part section format of the Construction Specifications Institute, as adapted for ACI requirements. The language is imperative and terse. P5. The specification is writt
22、en to the contractor. When a provision of this specification requires action on the contractors part, the verb “shall” is used. If the contractor is allowed to exercise an option, the verb “may” or, when limited alternatives are available, the conjunctive phrase “shall either. or.” is used. Statemen
23、ts provided in the spec- ification as information to the contractor use the verbs “may” or “will.” Informational statements typically identify activities or options that “will” be taken or “may” be taken by the owner or the licensed design professional. Joseph M. BracciD. Kirk HarmanAdolfo Matamoros
24、 Michael A. CaldaroneDaniel C. JansenAndrew W. Taylor Other contributors Dominic J. KellyAndres LepageHenry G. Russell ACI Innovation Task Group 4 S. K. Ghosh Chair ITG-4.1-2ACI STANDARD CONTENTS Preface, p. ITG-4.1-1 SPECIFICATION Section 1General requirements, p. ITG-4.1-2 1.1Scope 1.2Definitions
25、1.3Referenced standards and cited publications 1.4Organizations producing codes and standards Section 2Materials, p. ITG-4.1-4 2.1General 2.2Products 2.3Execution Section 3Mixture proportioning and trial batches, p. ITG-4.1-4 3.1General 3.2Products 3.3Execution Section 4Mixture submittal requirement
26、s, p. ITG-4.1-5 4.1General 4.2Products 4.3Execution Section 5Preconstruction meetings, p. ITG-4.1-5 5.1General 5.2Products 5.3Execution Section 6Ordering, p. ITG-4.1-5 6.1General 6.2Products 6.3Execution Section 7Production and delivery, p. ITG-4.1-6 7.1General 7.2Products 7.3Execution Section 8Conc
27、rete temperature control, p. ITG-4.1-6 8.1General 8.2Products 8.3Execution Section 9Placement, p. ITG-4.1-7 9.1General 9.2Products 9.3Execution Section 10Curing, p. ITG-4.1-7 10.1General 10.2Products 10.3Execution Section 11Sampling and testing, p. ITG-4.1-8 11.1General 11.2Products 11.3Execution NO
28、TES TO SPECIFIERS Foreword to checklists, p. ITG-4.1-8 Mandatory requirements checklist, p. ITG 4.1-9 Optional requirements checklist, p. ITG-4.1-9 Submittals checklist, p. ITG-4.1-10 SECTION 1GENERAL REQUIREMENTS 1.1Scope 1.1.1 GeneralThis specification covers normalweight, high-strength concrete i
29、n structures that must be designed for moderate to high seismic applications. More specifically, this specification applies to structures: Located in Seismic Zones 2, 3, or 4 defined by the Uniform Building Code; Assigned to Seismic Performance Categories C, D, or E of the BOCA/National Building Cod
30、e (1993 and subse- quent editions) or the Standard Building Code (1994 or subsequent editions); or Seismic Design Categories C, D, E, or F of the Interna- tional Building Code or the National Fire Protection Association (NFPA) 5000 Building Construction and Safety Code. Irrespective of seismic zone,
31、 seismic performance, or seismic design category, this specification shall apply to normalweight, high-strength concrete in intermediate or special moment frames and intermediate or special structural walls as defined in ACI 318-05. 1.1.2 Supplemental specificationThis specification supplements “Spe
32、cifications for Structural Concrete (ACI 301-05)” by providing more restrictive selected require- ments when high-strength concrete is used in moderate to high seismic applications. The requirements of ACI 301-05 shall apply unless otherwise specified in this specification. 1.1.3 High-strength concr
33、eteUnless otherwise specified, high-strength concrete is defined as concrete having a specified compressive strength for design of 6000 psi (41 MPa) or greater. 1.1.4 Dual unitsThe values stated in inch-pound or SI units shall be regarded separately as standard. The SI units are shown in brackets. T
34、he values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. 1.2Definitions admixturematerial other than water, aggregates, or hydraulic cement, used as an ingredient of concrete and added to concrete before or during mixing to modify
35、 its properties. aggregategranular material, such as sand, gravel, crushed stone, and iron blast-furnace slag, used with a cementing medium to form a hydraulic cement concrete or mortar. concrete, flowingconcrete that maintains a slump greater than 7-1/2 in. (190 mm) while remaining cohesive. concre
36、te, hydraulic-cementmixture of portland cement or any other hydraulic cement, fine aggregates, coarse aggregates, and water, with or without admixtures. SPECIFICATION FOR HIGH-STRENGTH CONCRETE IN SEISMIC APPLICATIONSITG-4.1-3 concrete, high-strengthconcrete that has a specified compressive strength
37、 for design of 6000 psi (41 MPa) or greater. concrete, massa volume of concrete with dimensions large enough to require that measures be taken to cope with the generation of heat and temperature gradients from hydration of the cementitious materials, and attendant volume change. concrete, self-conso
38、lidatingfresh concrete that can flow around reinforcement and consolidate within formwork under its own weight without vibration, and that exhibits no defect due to segregation or bleeding. creeptime-dependent increase in deformation due to sustained load; determined in accordance with ASTM C 512. c
39、uringprovision of moisture and appropriate temperatures for sufficient time for the concrete to develop the required properties. modulus of elasticityratio of normal stress to corre- sponding strain for tensile or compressive stress below the proportional limit of the material, determined in accorda
40、nce with ASTM C 469. modulus of rupturea measure of the load-carrying capacity of a beam and sometimes referred to as rupture modulus or rupture strength; it is the apparent tensile stress in the extreme tension fiber of a test specimen subject to bending under the load that produces rupture; determ
41、ined in accordance with ASTM C 78 (third-point loading), and ASTM C 293 (center-point loading). slumpa measure of consistency of freshly mixed concrete, mortar, or stucco equal to the subsidence measured to the nearest 1/4 in. (6 mm) of the molded specimen immediately after removal of the slump cone
42、, determined in accordance with ASTM C 143. shrinkagedecrease in either length or volume. (Note: may be restricted to the effects of moisture content or chemical changes). splitting tensile strengthtensile strength of concrete determined by applying a diametrical compressive force along the length o
43、f a cylindrical concrete specimen, in accordance with ASTM C 496. strength, compressivethe measured maximum resis- tance of a concrete or mortar specimen to axial compressive loading; expressed as force per unit cross-sectional area; or the specified resistance used in design calculations. strength,
44、 specified compressivecompressive strength of concrete used in design. 1.3Referenced standards and cited publications 1.3.1 Referenced standardsStandards of ACI and ASTM referred to in this specification are listed with serial designation including year of adoption or revision and are part of this s
45、pecification. 1.3.1.1 ACI standards 301-05Specifications for Structural Concrete 318-05Building Code Requirements for Structural Concrete 1.3.1.2 ASTM standards C 33-03Standard Specification for Concrete Aggregates C 39/C 39M-04aStandard Test Method for Compressive Strength of Cylindrical Concrete S
46、pecimens C 78-02Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Third-Point Loading) C 94/C 94M-04aStandard Specification for Ready-Mixed Concrete C 138/C 138M-01a Standard Test Method for Density (Unit Weight), Yield, and Air Content (Gravi- metric) of Concrete C 143/
47、C 143M-03 Standard Test Method for Slump of Hydraulic-Cement Concrete C 150-04ae1Standard Specification for Portland Cement C 231-04Standard Test Method for Air Content of Freshly Mixed Concrete by the Pressure Method C 260-01Standard Specification for Air- Entraining Admixtures for Concrete C 293-0
48、2Standard Test Method for Flexural Strength of Concrete (Using Simple Beam with Center-Point Loading) C 469-94e1Standard Test Method for Static Modulus of Elasticity and Poissons Ratio of Concrete in Compression C 494/C 494M-05 Standard Specification for Chemical Admixtures for Concrete C 496-96Stan
49、dard Test Method for Splitting Tensile Strength of Cylindrical Concrete Specimens C 512-02Standard Test Method for Creep of Concrete in Compression C 566-97 (2004)Standard Test Method for Total Evapo- rable Moisture Content of Aggregate by Drying C 595-03Standard Specification for Blended Hydraulic Cements C 618-03Standard Specification for Coal Fly Ash and Raw or Calcined Natural Pozzolan for Use in Concrete C 989-05Standard Specification for Ground Gran- ulated Blast-Furnace Slag for Use in Concrete and Mort