Google Share on Facebook loss of prestress Inprestressed concrete, the reduction of the prestressing force which results from the combined effects of creep in the steel and creep and shrinkage of the concrete; normally does not include friction losses but may include the effect of elastic deformati...
10 High-performance/high-strength Lightweight Concrete for ... Table 29. Prestress loss due to elastic shortening. Prestress Loss (ksi) Beam Calculated with Calculated with Measured Meas. Ed Cale. EC, 1.NW1.5A 10.4 10.9 11.5 1.NW1.5B 10.4 10.9 12.1 1.LW1.5A 13.5 13.4 NA 1.LW1.5B ...
Three prestressed concrete beam specimens were fabricated, and the transfer length of 18 mm strands was measured based on the distribution of concrete surface strains at the beam end. The measured transfer lengths were compared with the predicted values using the existing equations in codes or the ...