Reinforced concrete (RC) structures built before the 1970 represent a large portion of existing European buildings stock. Their obsolescence in terms design criteria, materials, and functionality is becoming critical issue for guaranteeing adequate compliance with current structural codes. Recently, new jacketing system based on use high-performance fiber-reinforced (HPFRC) has been introduced ...

The seismic performance of reinforced concrete (RC) columns retrofitted using the steel plate sandwich method bonded with prestressed PC bars was compared in both in-plane and out-of-plane directions. Therefore, bending strength, initial horizontal rigidity, cumulative energy absorption improved.

Significant research efforts have been devoted in recent years to the development of displacement-based seismic design methodologies, recognizing the shortcomings of traditional, code-specified force-based design procedures. Recent advances in direct displacement-based seismic design of columns rely on the estimates of yield curvature for the determination of seismic design forces to satisfy th...

In emergency scenarios, immediate reconnaissance efforts are necessary. These efforts often take months to complete in full. While underway, building occupants are unable to return to their homes/businesses, and thus, the impact on the society of the disaster-stricken region is increased. In order to mitigate the impact, researchers have focused on creating a more efficient means of assessing t...

PERFORMANCE CHARACTERIZATION OF HIGH PERFORMANCE CONCRETES UNDER FIRE CONDITIONS By Wasim Khaliq (Advisor: Prof. Venkatesh Kodur) Monday, April 30, 2012, 1:00 pm CEE Conference Room (EB 3546D) In recent years, high performance concretes (HPC) are finding increasing applications in buildings and infrastructure due to numerous advantages, such as higher strength and durability, these HPC offer ov...

Abstract A significant proportion of existing bridges in high seismic regions were constructed prior to the 1970s. As a result poor reinforcement detailing, pre-1970s bridge columns are susceptible lap-splice or shear failure plastic region. Given economic impact retrofitting all reinforced concrete (RC) bridges, it is essential identify most vulnerable for retrofit prioritisation. Analytical f...

The residual strength and stiffness of concrete columns are decreased when exposed to elevated temperatures. This study proposes an external confinement provided by fiber-reinforced polymer (FRP) rehabilitate deficiencies that originate from fire damage. Recent studies show the efficiency this strategy is a function column cross-section geometry number FRP sheet layers applied. current investig...