This paper presents the results from the testing of a 0.4-scale “hybrid” precast concrete wall specimen under reversed-cyclic lateral loads combined with gravity loading. The specimen was designed to conform to the requirements of ACI ITG-5.2 (2009) and tested according to ACI ITG-5.1 (2007) to ultimately support the validation of hybrid precast walls for use in moderate and high seismic region...

The performance of precast shear wall panel structures subjected to earthquakes relies on the behaviour and integrity of the connections between the panels. The current lack of knowledge on the seismic behaviour of precast wall connections limits the use of such systems in earthquake areas. This paper presents results of an extensive experimental program undertaken at the University of Manitoba...

Abstract Post-tensioned precast concrete walls are an attractive research trend in structural engineering, which replaces cast-in-place earthquake-prone buildings. Precast use mild steel and high-strength post-tensioning for flexural resistance. Mild reinforcement yields tension compression, dissipating inelastic energy. Unbounded tendons used inside the wall to give self-centering capability, ...

PCI JOURNAL This paper presents the results of nonlinear fi nite element analyses conducted to model the behavior of L-shaped, precast, prestressed concrete spandrels constructed with open web reinforcement. The fi nite element model was calibrated using experimental results from recent tests of slender, L-shaped, precast, prestressed concrete spandrels. Detailed correlative studies between ana...

This paper presents an ongoing research project on the validation of “hybrid” precast concrete wall structures for use in seismic regions. Hybrid precast walls utilize a combination of mild (e.g., Grade 60) steel and high-strength unbonded posttensioning (PT) steel for lateral resistance across horizontal joints. The mild steel reinforcement is designed to yield and provide energy dissipation. ...

Research Question: Is the lean production philosophy applicable in precast concrete factories to achieve sustainability? If it is, what are the imperfections that can be improved to achieve sustainability? Purpose: This study aims to identify the contribution of the lean concept to achieve sustainability in precast concrete factories. By using appropriate lean principles, the precast concrete i...