Report on Prestressing Steel: 7. Test for the Determination of Tendon Transmission Length Under Static Conditions PDF Download
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Author: Fédération internationale de la précontrainte. Commission on Prestressing Steels and Systems
Publisher:
ISBN:
Category : Prestressed steel construction
Languages : en
Pages : 19
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Book Description
Author: Fédération internationale de la précontrainte. Commission on Prestressing Steels and Systems
Publisher:
ISBN:
Category : Prestressed steel construction
Languages : en
Pages : 19
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Book Description
Author: FIB – International Federation for Structural Concrete
Publisher: FIB - International Federation for Structural Concrete
ISBN: 0907862039
Category : Technology & Engineering
Languages : en
Pages : 22
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Book Description
Author: Fédération internationale de la précontrainte. Commission on Prestressing Steels and Systems
Publisher:
ISBN:
Category : Prestressed concrete
Languages : en
Pages : 19
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 19
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Book Description
Author: FIB – International Federation for Structural Concrete
Publisher: FIB - International Federation for Structural Concrete
ISBN: 0721011160
Category : Technology & Engineering
Languages : en
Pages : 44
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Author: Fédération internationale de la précontrainte
Publisher:
ISBN:
Category : Prestressed concrete
Languages : en
Pages : 128
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Author: Fédération internationale de la précontrainte
Publisher:
ISBN:
Category : Pretressed concrete
Languages : en
Pages : 884
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Author: RJ. Glodowski
Publisher:
ISBN:
Category : Copper alloys
Languages : en
Pages : 17
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Book Description
Several methods have been proposed for predicting the total prestress loss in prestressed concrete structures. Inherent in all of these methods is the concept that the applied elastic strain on the steel tendons changes with time due to creep and shrinkage of concrete. A procedure most often used to determine the steel tendon's stress relaxation contribution to total prestress loss is a time iteration technique. The stress relaxation that occurs in each time interval is predicted from an equation describing stress relaxation as a function of time and initial stress level. This equation is normally derived from data obtained from constant-strain tests as per ASTM E328. During the time iteration program, however, the initial stress level is different for each time interval because of changing elastic strains in the steel tendons due to concrete creep and shrinkage. In some procedures under consideration by the prestressed concrete industry, the actual stress on the tendon at the start of each time interval is assumed to be the correct value for initial stress. Total relaxation is then determined by a summation of the relaxation during each time interval.
Author:
Publisher:
ISBN:
Category : Cement
Languages : en
Pages : 160
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Author:
Publisher:
ISBN:
Category : Precast concrete
Languages : en
Pages : 872
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