Effects of Fiber Content and Damaging Load on Steel Fiber Reinforced Concrete Stiffness

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Title: Effects of Fiber Content and Damaging Load on Steel Fiber Reinforced Concrete Stiffness

Author(s): Mark E. Patton and W. L. Whittaker

Publication: Journal Proceedings

Volume: 80

Issue: 1

Appears on pages(s): 13-16

Keywords: beams (supports); flexural strength; fiber reinforced concretes: loads (forces); metal fibers: modulus of elasticity; nondestructive tests; stiffness.

Date: 1/1/1983

Abstract:
The stiffness of steel fiber reinforced concrete and its sensitivity to fiber content and damaging load are investigated. An experimental program is implemented to measure Young's modulus of plain and SFRC beam samples, then to damage these samples in a controlled manner. Sucessive damage and modulus measurments lead to the correlation of damage with degeneration of Young's modulus with SFRC materials. The following relationships are obtained: 1. stiffness of undamaged SFRC versus fiber content, and 2. degeneration of SFRC stiffness with damaging load. The assesment of stiffness has both applied and theoretical relevances that are discussed.