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Reactive Powder Concrete

Added on: March 17th, 2012 by No Comments

Concrete is a critical material for the construction of infrastructure facilities throughout the world. A new material known as reactive powder concrete (RPC) is becoming available that differs significantly from traditional concretes. RPC has no large aggregates, and contains small steel fibers that provide additional strength and in some cases can replace traditional mild steel reinforcement. Due to its high density and lack of aggregates, ultrasonic inspections at frequencies ten to twenty times that of traditional concrete inspections are possible. These properties make it possible to evaluate anisotropy in the material using ultrasonic waves, and thereby measure quantitatively the elastic properties of the material. The research reported in this paper examines elastic properties of this new material as modeled as an orthotropic elastic solid and discusses ultrasonic methods for evaluating Young’s modulus nondestructively. Calculation of shear moduli and Poisson’s ratio based on ultrasonic velocity measurements are also reported. Ultrasonic results are compared with traditional destructive methods.

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