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Founded in 1904 and headquartered in Farmington Hills, Michigan, USA, the American Concrete Institute is a leading authority and resource worldwide for the development, dissemination, and adoption of its consensus-based standards, technical resources, educational programs, and proven expertise for individuals and organizations involved in concrete design, construction, and materials, who share a commitment to pursuing the best use of concrete.
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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Fracture of Rock-Concrete Interfaces: Laboratory Tests and Applications
Author(s): J. M. Chandra Kishen and Victor E. Saouma
Publication: Structural Journal
Appears on pages(s): 325-331
Keywords: concrete; fracture; toughness
Abstract:The fundamental understanding of the fracture behavior at the rock-concrete interface requires evaluation of the fracture energy, which is an interface material property. As in concrete or rock, fracture at the interface is characterized by a steady degradation of its structure. With increasing degradation of the material (opening of the crack), less stress is transferred across the interface until it is completely separated. The interface undergoes tensile softening. Wedge-splitting tests are performed on the limestone-concrete interface to evaluate the Mode I fracture energy. These experiments are followed by linear and nonlinear fracture-mechanics-based numerical analysis to obtain the fracture toughness. The fracture parameters so obtained are used in the fracture-mechanics-based analysis of a gravity dam for the determination of crack length between the concrete dam and rock foundation.
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