ACI 207.2R-1995
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ID： |
068504B9656E4B969630918E9F443E1C |
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文件大小(MB)： |
1.29 |
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页数： |
26 |
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日期： |
2013-6-23 |
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文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
207.2R-1,This report presents a discussion of the effects of heat generation and volume,change on the design and behavior of reinforced mass concrete elements,and structures. Particular emphasis is placed on the effects of,restraint on cracking and the effects of controlled placing temperatures,concrete strength requirements, and type and fineness of cement on volume,change. Formulas are presented for determining the amounts of reinforcing,steel needed to control the size and spacing of cracks to specified limits,under varying conditions of restraint and volume change.,Keywords: adiabatic conditions; age; cement types; concrete dams; concrete,slabs; cooling; cracking (fracturing); crack propagation; crack width,and spacing; creep properties; drying shrinkage; foundations; heat of,hydration; heat transfer; machine bases; mass concrete; modulus of elasticity;,moisture content; placing; portland cement physical properties; portland,cements; pozzolans; reinforced concrete; reinforcing steels;,restraints; shrinkage; stresses; structural design; temperature; temperature,rise (in concrete); tensile strength; thermal expansion; volume change;,walls.,CONTENTS,Chapter 1—Introduction, p. 207.2R-2,1.1—Scope,1.2—Definition,1.3—Approaches to control of cracking,Chapter 2—Volume change, p. 207.2R-3,2.1—Heat generation,2.2—Moisture contents and drying shrinkage,2.3—Ambient, placement, and minimum service temperatures,2.4—Placement temperature,2.5—Minimum temperature in service,2.6—Heat dissipation and cooling,ACI 207.2R-95 supersedes ACI 207.2R-90 and became effective January 1, 1995.,Copyright . 2002, American Concrete Institute.,The 1995 revisions consisted of many minor editorial and typographical corrections,throughout, as well as some additional explanatory information.,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 any electronic or,mechanical device, printed, written, or oral, or recording for sound or visual reproduction,or for use in any knowledge or retrieval system device, unless permission in writing,is obtained from the copyright proprietors.,ACI 207.2R-95,Effect of Restraint, Volume Change, and Reinforcement on,Cracking of Mass Concrete,Reported by ACI Committee 207,Members of the committee voting on proposed revisions:,James L. Cope,Chairman,Robert W. Cannon*,Vice Chairman,Edward A. Abdun-Nur Luis H. Diaz Robert F. Oury,Fred A. Anderson Timothy P. Dolen Jerome M. Raphael?,Howard L. Boggs Kenneth D. Hansen Ernest K. Schrader,Dan A. Bonikowsky Gary R. Mass* Stephen B. Tatro*,Richard A. Bradshaw, Jr. Alfred T. McCarthy Terry L. West,Edward G. W. Bush?James E. Oliverson,*Members of the task group who prepared this report.,?Chairman of the task group who prepared the report.,?Deceased.,John M. Scanlon,Chairman,Howard L. Boggs Luis H. Diaz Gary R. Mass,Dan A. Bonikowsky Timothy P. Dolen Robert F. Oury,Richard A. Bradshaw, Jr. Michael I. Hammons Ernest K. Schrader,Robert W. Cannon Kenneth D. Hansen Glenn S. Tarbox,Ahmed F. Chraibi Allen J. Hulshizer Stephen B. Tatro,James L. Cope Meng K. Lee* Terry L. West,*Chairman, 207.2R Task Group.,ACI Committee Reports, Guides, Standard Practices, and Commentaries,are intended for guidance in designing, planning, executing,or inspecting construction and in preparing,specifications. Reference to these documents shall not be made,in the Project Documents. If items found in these documents are,desired to be part of the Project Documents, they should be,phrased in mandatory language and incorporated in the Project,Documents.,Copyright American Concrete Institute,Provided by IHS under license with ACI,No reproduction or networking permitted without license from IHS Not for Resale,--`,,``,`-`-`,,`,,`,`,,`---,(Reapproved 2002),207.2R-2 ACI COMMITTEE REPORT,2.7—Summary and examples,Chapter 3—Properties, p. 207.2R-8,3.1—General,3.2—Strength requirements,3.3—Tensile strength,3.4—Modulus of elasticity,3.5—Creep,3.6—Thermal properties of concrete,Chapter 4—Restraint, p. 207.2R-11,4.1—General,4.2—Continuous external restraint,4.3—Discontinuous external or end restraint,4.4—Internal restraint,Chapter 5—Crack widths, p. 207.2R-16,5.1—General,5.2—Limitations,5.3—Calculations,Chapter 6—Application, p. 207.2R-17,6.1—General,6.2—Volume change plus flexure,6.3—Volume change without flexure,6.4—Recommendation for minimum reinforcement,6.5—Design procedure,Chapter 7—References, p. 207.2R-24,7.1—Recommended references,7.2—Cited references,7.3—Additional references,Appendix, p. 207.2R-25,Notation,Metric conversions,CHAPTER 1—INTRODUCTION,1.1—Scope,This report is prim……
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