Title: Experimental Investigation of Composite Ultra-High-Performance Fiber-Reinforced Concrete and Conventional Concrete Members

Author(s): Katrin Habel, Emmanuel Denarié, and Eugen Brühwiler

Publication: Structural Journal

Volume: 104

Issue: 1

Appears on pages(s): 93-101

Keywords: fiber-reinforced concrete; rehabilitation; stress-strain

DOI: 10.14359/18437

Date: 1/1/2007

Abstract:
Composite ultra-high-performance fiber-reinforced concrete (UHPFRC) and conventional reinforced concrete structural members are investigated to assess the rehabilitation potential for existing concrete structures. The composite structural response is determined by testing 12 full-sized flexural beams, loading the UHPFRC layer in tension. The results demonstrate that the exceptional material properties of UHPFRC significantly improve the composite member structural response, including the ultimate force, stiffness, and cracking behavior. An analytical model is developed to predict the composite UHPFRC and conventional reinforced concrete structural response, and is employed to further analyze the experimental test results.