2019 CSCE Annual Conference - Laval (Greater Montreal)

2019 CSCE Annual Conference - Laval (Greater Montreal) Conference


Title
PERFORMANCE OF SELF-CONSOLIDATED LIGHTWEIGHT CONCRETE COLUMNS REINFORCED WITH GFRP BARS AND SPIRALS


Author(s)
Dr. Brahim Benmokrane, Universite de Sherbrooke
Mr. Abdoulaye Sanni Bakouregui, University of Sherbrooke (Presenter)
Dr. Hamdy M. Mohamed, University of Sherbrooke
Dr. Ammar Yahia, Université de Sherbrooke
Abstract

This paper presents test results of an experimental program to describe the behavior of circular self-consolidated lightweight concrete (SCLC) columns reinforced with glass fiber-reinforced polymer (GFRP) bars and spirals subjected to eccentric loading. The 300 mm diameter columns were designed according to CAN/CSA S806-12 code requirements. Ten concrete columns were constructed using SCLC (42 MPa) and tested under eccentric loading. The test parameters included reinforcement type (GFRP versus steel); longitudinal GFRP reinforcement ratio; and the value of the applied eccentricity. The study was conducted to investigate whether the compressive and tensile behavior of longitudinal GFRP bars affects the column performance under eccentric loading and to develop experimentally the load-moment interaction diagram. In addition, the study aimed at providing basic technical information and yielding better understanding of the eccentric behavior of circular GFRP reinforced SCLC columns. Test results indicated that no marked difference from conventional reinforced concrete columns could be observed from the external behavior such as the cracking conditions. On the other hand, failures of GFRP reinforced SCLC columns were characterized by crushing of concrete in the compression side.