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A platform for research: civil engineering, architecture and urbanism
Elastic properties of reactive powder concrete
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. It is important to note that the results reported here are from a very small sample set. The conclusions drawn from this data are therefore of limited applicability. For example, the difference between averaged E values measured ultrasonically and statically is less than 2 %. It is possible that this falls beneath the natural dispersion of static measurement results, and therefore could be difficult to repeat with a larger sample set. This is the subject of ongoing research.
Elastic properties of reactive powder concrete
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. It is important to note that the results reported here are from a very small sample set. The conclusions drawn from this data are therefore of limited applicability. For example, the difference between averaged E values measured ultrasonically and statically is less than 2 %. It is possible that this falls beneath the natural dispersion of static measurement results, and therefore could be difficult to repeat with a larger sample set. This is the subject of ongoing research.
Elastic properties of reactive powder concrete
Elastische Eigenschaften von reaktivem Pulverbeton
Washer, G. (author) / Fuchs, P. (author) / Graybeal, B. (author)
2003
8 Seiten, 2 Bilder, 5 Tabellen, 10 Quellen
(Nicht paginiert)
Conference paper
Storage medium
English
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