................................................................................................................................. i Dedication........................................................................................................................... iii Acknowledgements............................................................................................................. i...

The prefabricated concrete structure is regarded as the main body of green construction technology, while joint connection components weak link force. In addition, grouting sleeve a widely used method in component joints. effective anchorage reinforcement realized by implementation mechanical bite force, friction force and bonding between reinforcement, material inner wall, respectively. Along ...

In assessments of the seismic adequacy of existing steel bridges, the steel-to-concrete anchorage connections typically found at the base of steel truss piers can be potentially vulnerable, having little to no ductility and inadequate strength to resist seismic demands. Many other non-ductile failure locations may also exist along the seismic load path. Failure would result in unacceptable perf...

this paper presents an experimental study on seismic repair of damaged square reinforced concrete columns with poor lap splices, 90-degree hooks and widely spaced transverse bars in plastic hinge regions according to aci detailing (pre.1971) and (318-02) using gfrp wraps. three specimens were tested in “as built” condition and retested after they were repaired by glass fiberreinforced plastic s...

Abstract The concept of external glass FRP composite confinement is a current process for strengthening concrete beams subjected to static loads. End anchorage composites 80 mm width and 90–130 length with different thicknesses (2.4 4.8 mm) have been fixed at the bottom bolts various diameters (6 10 mm). For this purpose, behavior strengthened bolt-end anchoring fiber polymer (BEGFPC) has analy...

The main objective of this study is to evaluate the workability of fresh portland cement concrete while it is still in the mixing truck by determining fundamental rheological parameters (plastic viscosity and yield stress). Nine concrete mixtures with different values of yield stress and plastic viscosity were tested in a concrete truck. The measurements made with the truck were based on the ty...

This paper looks to address the grand challenge of integrating construction materials engineering research within a multi-scale, inter-disciplinary research and management framework for sustainable concrete infrastructure. The ultimate goal is to drive sustainability-focused innovation and adoption cycles in the broader architecture, engineering, construction (AEC) industry. Specifically, a pro...

concrete is one of the most important construction materials widely using in hydraulic structures, such as lining of irrigation canals. concrete durability might be decreased due to the environmental or inner factors with physical, chemical or mechanical reactions. since, the climatologically condition is variable in most part of the country, local studies are needed to evaluate of the weakness...