Grouted post-tensioned (PTd) concrete systems are widely used in long-span segmental bridges with a target service life of 100+ years. However, the usage inadequate grout materials and grouting practices have resulted formation unwanted air voids duct, which turn led to premature corrosion (say, within about 20 years) strands failure tendons. Also, re-grouting/repairing void regions localized a...

Abstract A case study on a rectangular post-tensioned concrete beam end block with 3-dimensional analysis is presented in this paper. ANSYS software used to model the end-block of specimen i.e., beam. An actual anchorage plate, widely construction modeled two different approaches, and concentrated jacking force applied same area. performed which modeling approaches are plate. For both plates, r...

Transverse Modal Vibrations of Vertical Tensioned Risers. A simplified Analytical Approach — The paper examines the physics of riser transverse modal vibrations of the type induced by VIV (Vortex Induced Vibrations). It presents a simplified analytical solution for such vibrations of vertical tensioned risers with uniform linear characteristics. The solution leads to simple expressions for the ...

A sustainable environment can be achieved by strengthening the existing building to avoid new construction and replacing materials with long-lasting such as a fiber-reinforced polymer (FRP). Using post-tensioned (PT) FRP systems has proven an effective technique in structure decreasing cracks deformability. In this study, 3-D finite element model was built investigate flexural behavior of compo...