Results 151 to 160 of about 380 (177)

Bridge Prestress Losses in Dry Climate

Journal of Bridge Engineering, 1998
A posttensioned, simply supported, box-girder bridge in southern Nevada was instrumented during construction beginning in June 1992. The study was triggered by concerns over the potential adverse effects of low relative humidity on prestress losses. The variation of prestress forces and deflection was monitored over a 24-month period.
M. Saiidi, E. Hutchens, D. Gardella
openaire   +1 more source

Prestress Losses In Pretensioned Prestressed Concrete Members With Bent Tendons.

1963
PhD ; Civil engineering ; University of Michigan, Horace H. Rackham School of Graduate Studies ; http://deepblue.lib.umich.edu/bitstream/2027.42/186118/2/6408155 ...
openaire   +2 more sources

Thermal effects on transfer length and prestress losses in CFRP prestressed prisms

Construction and Building Materials, 2023
Hamidreza Tahsiri, Abdeldjelil Belarbi, Bora Gencturk   +2 more
openaire   +1 more source

Evaluation of prestress relaxation loss and harping characteristics of prestressing CFRP systems

Construction and Building Materials, 2022
Hamidreza Tahsiri, Abdeldjelil Belarbi
openaire   +1 more source

Assessment and Validation of Prestress Loss Prediction Models Using Real-Time Prestress Loss Prediction Measurements

PCI Journal
This study investigates prestress loss measured on precast, prestressed concrete bridge beams for a bridge in Oklahoma. The research examines the effects of including mild reinforcing steel in the bottom flange of precast concrete girder and the alternative prestressing pattern on the prestressing losses of pretensioned bridge girders.
Alla Eddine Acheli, Hema Jayaseelan, Bruce W. Russell, Walter Peters, Chris Filip   +4 more
openaire   +1 more source

Rapid Accurate Evaluation of Prestress Losses

ACI Journal Proceedings, 1973
The difficulty in estimating accurately the losses due to creep, shrinkage, and relaxation of steel lies in: (a) prediction of coefficients related to the quality of concrete, steel, and environment in which the structure will be kept during the period of loss, (b) the interdependence of the amount of prestress loss produced by the three contributory ...
openaire   +1 more source

Prestress Loss as Affected by Type of Curing

PCI Journal, 1964
This report describes a three-year investigation of the effect of accelerated curing conditions on the creep and shrinkage properties of the type of concrete frequently used in precasting plants. These concretes were proportioned to achieve a nominal compressive strength of at least 4,000 psi after five or six days of moist curing or in one day of ...
openaire   +1 more source

Prestress Losses

1995
Sami Khan, Martin Williams
openaire   +1 more source

A general equation for estimation of time-dependent prestress losses in prestressed concrete members

Structures, 2023
Weinan Wang
exaly  

Loss of prestress

2011
openaire   +1 more source