Abstract
As noted in Sec. 1–2, the loss in prestress due to the effects of steel relaxation and the shrinkage and creep of concrete generally is from 10 to 30 percent of the initial prestress. Computation of prestress losses due to various causes is discussed in detail in Sec. 7–2, but it is important here for the designer of prestressed concrete to be aware that the greater portion of the loss of prestress normally is attributed to the shrinkage and creep of the concrete. Therefore, it is necessary to use a high-strength steel, with a relatively high initial stress, in the construction of prestressed concrete.
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References
ACI Committee (1987). Guide for Determining the Fire Endurance of Concrete Elements. Concrete International 3(2):13–47 and 9(11):65.
ACI Committee 1989. Building Code Requirements for Reinforced Concrete Detroit. American Concrete Institute.
American Association of State Highway and Transportation Officials. 1989. Standard Specifications for Highway Bridges. Fourteenth Edition Washington, D.C.
American Society for Testing and Materials. Test Methods and Definitions for Mechanical Testing of Steel Products. A 370–87c. Philadelphia.
American Society for Testing and Materials. Specification for Uncoated Seven-Wire Stress-Relieved Steel Strand for Prestressed Concrete. A 416–87a. Philadelphia.
American Society for Testing and Materials. Specification for Uncoated Stress-Relieved Wire for Prestressed Concrete. A 421–80(1985).
American Society for Testing and Materials. Practices for Packaging, Marking, and Loading Methods for Steel Products for Domestic Shipment. A 700–81. Philadelphia.
American Society for Testing and Materials. Specification for Uncoated High-Strength Steel Bar for Prestressing Concrete. A 722–86. Philadelphia.
American Society for Testing and Materials. Specification for Steel Strand, Seven-Wire, Uncoated, Compacted, Stress-Relieved for Prestressed Concrete. A 779–80(1985).
American Society for Testing and Materials. Specification for Steel Strand, Indented, Seven-Wire Stress-Relieved for Prestressed Concrete. A 886–88. Philadelphia.
Base, G. P. 1958. An Investigation of Transmission Length in Pretensioned Concrete. Research Report No. 5. London. Cement and Concrete Association.
CEB-FIP. 1978. CEB-FIP Model Code for Concrete Structures London. Federation International de la Precontraint. 201–2.
Strycker R. 1959. The Influence of Temperature and Variations of Stress on the Creep of Prestressing Steels. Paris. Revue de Metallurgie 56(1):49–54.
Dorsten, V., Hunt, F. F., and Preston, H. K. 1984. Epoxy Coated Seven-Wire Strand for Prestressed Concrete. PCI Journal 29(5):120–29.
FIP Commission on Practical Construction. 1986. Corrosion and Corrosion Protection of Prestressed Ground Anchorages London. Thomas Telford, Ltd.
FIP Commission on Prestressing Steels and Systems. 1986. Corrosion Protection of Unbonded Tendons London. Thomas Telford, Ltd.
Ghali, A. and Trevino, J. 1985. Relaxation of Steel in Prestressed Concrete. PCI Journal 30(5):82–94.
Magura, D. D., Sozen, M. A., and Siess, C. P. 1962. A Study of Stress Relaxation in Prestressing Reinforcement. Civil Engineering Studies, Structural Research Series No. 237. Urbana. University of Illinois.
Papsdorf and Schwier. 1958. Creep and Relaxation of Steel Wire, Particularly at Slightly Elevated Temperatures. Stahl und Eisen 78(14):937–47.
Szilard, Rudolph. 1969. Corrosion and Corrosion Protection of Tendons in Prestressed Concrete Bridges. Journal of the American Concrete Institute 66(1):42–59.
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© 1990 Springer Science+Business Media New York
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Libby, J.R. (1990). Steel for Prestressing. In: Modern Prestressed Concrete. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-3918-6_2
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DOI: https://doi.org/10.1007/978-1-4615-3918-6_2
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