Title: High-Performance Micro-Fiber-Reinforced Concrete for Thin Repairs

Author(s): N. Banthia and C. Yan

Publication: Symposium Paper

Volume: 185

Issue:

Appears on pages(s): 69-80

Keywords: bond; fiber-reinforced concretes; repairs

DOI: 10.14359/5711

Date: 2/1/2000

Abstract:
In most industrialized countries of the world, bulk of the future activity in the construction sector will be related to repair and rehabilitation of the existing structures. Given the general inadequacy of our present repair materials, much future research is needed towards developing high performance repair materials especially for executing durable thin repairs and patching. In this paper, polymer modified micro-fiber reinforced concrete composites are evaluated as repair materials by conducting CMOD controlled repair bond tests in uniaxial tension. A significant improvement in the bond strength and bond fracture energy due to both fiber reinforcement and polymer modification is noted. In addition, surface preparation emerges as one of the most important variables controlling the strength and fracture energy of the bond.