ACI-COMPILATION-32-1996.pdf
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1、 A C 1 COMP*32 * H Obb2949 0525807 338 HIGH-PERFORMANCE CONCRETE American Concrete Institute Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 03/05/2007 02:44:23 MSTNo reproduction or networking perm
2、itted without license from IHS -,-,- A C 1 COMPt32 tt = Obb2949 0525808 274 M Preface This AC1 Compilation combines material previously published in CONCRETE INTERNATIONAL Magazine, AC1 MATERIALS JOURNAL, and SP-149 to provide compact and ready information on a specific topic. The material in such a
3、 compilation does not necessarily represent the opinion of any AC1 technical committee - only the opinions of the authors of the compiled articles. However, the material presented here is considered to contain useful information for readers interested in the subject. Paul Zia, Chairman C. Raymond Ha
4、ys Richard C. Meininger Harold R. Sandberg J. Francis Young Task Group TAC Subcommittee on High-Performance Concrete (THPC) On the cover: The worlds largest egg-shaped digesters, concrete structures that serve as central sludge These odd- looking devices are 149 ft in height and have a maximum diame
5、ter of 92 ft. I handling facilities for wastewater treatment plants, are under construction in Germany. American Concrete Institute, Box 191 50, Redford Station, Detroit, Michigan 4821 9 Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=IHS Employees/1111111001, U
6、ser=listmgr, listmgr Not for Resale, 03/05/2007 02:44:23 MSTNo reproduction or networking permitted without license from IHS -,-,- _ _ _ A C 1 COMP*32 tt m 0662749 0525809 LOO m 1 3 8 14 19 24 29 35 41 High-Performance Concrete AC1 Compilation 32 Contents Introduction 43 Long-Term Characteristics of
7、 a Very High- Strength Concrete, by Pierre-Claude Aitcin, S. L. Sarkar, and P. Laplante (Concrete International, V. 12, No. 1, Jan. 1990, pp. 40- 44) 48 High-Strength Concrete: Economics, Design, and Ductility, by John Webb (Concrete International, V. 15, No. 1, Jan. 1993, pp. 27- 33) 51 225 W. Wack
8、er Drive, by Jaime Moreno (Concrete International, V. 12, No. 1, Jan. 1990, pp. 35-39) Effect of Coarse Aggrega,! Characteristics on Mechanical Properties of High-Strength Concrete, by Pierre-Claude Aitcin and P. K. Mehta (ACI Materials Journal, V. 87, No. 2, Mar.-Apr. 1990, pp. 103-107) The Bridge
9、of Joigny, by Yves Malier, Didier Brazillier, and Stphane Roi (Concrete International, V. 13, No. 5, May 1991, pp. 40- 42) Thermal Stresses in Large High-Strength Concrete Columns, by William D. Cook, Buquan Miao, Pierre-Claude Aitcin, and Denis Mitchell ACZ Materials Journal, V. 89, No. 1, Jan.-Feb
10、. 1992, pp. 61-68) Proportioning High-Strength Concrete to 59 Control Creep and Shrinkage, by Therese M. Collins (ACZ Materials Journal, V. 86, No. 6, Nov.-Dec. 1989, pp. 576-580) Evaluation of Core Strength in High-Strength Concrete, by Robert L. Yuan, Mostafa Ragab, Robert E. Hill, and James E. Co
11、ok (Concrete International, V. 13, No. 5, May 1991, pp. 30- 34) 65 High-Performance Concrete Demystified, by Pierre-Claude Aitcin and Adam Neville 81 (Concrete International, V. 15, No. 1, Jan. 1993, pp. 21-26) On-Site Early-Age Monitoring of High- Performance Concrete Columns, by Buquan Miao, Omar
12、Chaallal, Daniel Perraton, and Pierre-Claude Aitcin (ACI Materials Journal, V. 90, No. 5, Sept.-Oct. 1993, pp. 415-420) 87 High-Performance Concrete-Stretching the Paradigm, by Stephen W. Forster (Concrete International, V. 16, No. 10, Oct. 1994, pp. 33- 103 34) Testing High-Strength Concrete Compre
13、ssive Strength, by Michel Lessard, Omar Chaallal, and Pierre-Claude Aitcin (A CIMaterials Journal, V. 90, NO. 4, July-AUg. 1993, pp. 303-307) Freezing and Thawing: Comparison between Non-Air-Entrained and Air-Entrained High- Strength Concrete, by Y. Li, B. W. Langan, and M. A. Ward, High-Pel-formanc
14、e Concrete, SP-149, American Concrete Institute, Detroit, 1994, pp. 545-560) High-Performance Concrete for Transportation Structures, by Celik Ozyildirim (Concrete International, V. 15, No. 1, Jan. 1993, p. 33-38) Lessons Learned from Field Trials with High- Performance Concrete, by J. J. Schemel, M
15、. L. Leming, and M. R. Hansen (High- Performance Concrete, SP-149, American Concrete Institute, Detroit, 1994, pp. 823-838) Recommended Reading Copyright American Concrete Institute Provided by IHS under license with ACI Licensee=IHS Employees/1111111001, User=listmgr, listmgr Not for Resale, 03/05/
16、2007 02:44:23 MSTNo reproduction or networking permitted without license from IHS -,-,- A C 1 COMP*32 * m Obb2949 0525LO 922 m Introduction AC1 Compilations are a series of special publications that combine material previously published by the Institute to provide compact and ready reference on spec
17、ific topics. The fifteen papers in this compilation on High-Performance Concrete have been selected by a Task Group of the TAC Subcommittee on High-Performance Concrete (THPC) with a specific objective of providing technical information to readers who would find it useful in practical applications.
18、For readers who may wish to pursue the subject further, a recommended reading list is also provided. High-performance concrete (HPC) has been broadly defined by THPC as concrete that meets special performance and uniformity requirements that cannot always be achieved routinely by using only conventi
19、onal materials and normal mixing, placing, and curing practices. The requirements may involve enhancements in ease o f placement, compaction without segregation, long-term mechanical properties, early-age strength, volume stability, or service life in severe environments. Concretes possessing many o
20、f these characteristics often achieve higher strength. Therefore, high-performance concrete is often of high strength, but high-strength concrete may not necessarily be of high performance. Two papers in this compilation are for general reading. In his paper, Forster discusses the definition of HPC
21、and the basic considerations of when to use HPC. Factors such as workability, placing, and curing are discussed. The paper by Aitcin and Neville points out that HPC is not that different from ordinary concrete; but, through the application of special know-how and the judicious use of cementitious ma
22、terials, chemical admixtures, and optimum water-cement ratio, properties of concrete can be enhanced and applications of concrete expanded. Changes in the composition, pore structure, and bond of the matrix with the aggregate are described as the result of using this know-how in selecting materials
23、and proportions. To produce HPC, it is essential to have good quality coarse aggregates. Aitcin and Mehta point out in their paper the importance of evaluating the characteristics of coarse aggregates to be used in very high-strength concrete. Test results of three Canadian and four Californian aggr
24、egates producing concrete strengths ranging from 85 to 105 MPa (12 to 15 ksi) are summarized. It is shown that coarse aggregate mineralogy, strength, and/or bonding with the cement paste play an important role in concrete strenth and elastic modulus. Collins discusses proportioning high-strength con
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