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Response of Confined Concrete to Cyclic Loading at Various Slow Strain Rates

Published online by Cambridge University Press:  25 February 2011

S. H. Perry ,
A. H. Al-Shaikh  and
H. K. Cheong
S. H. Perry
Affiliation:
Imperial College of Science and Technology, Dept. of Civil Engineering, London, SW7, U.K.
A. H. Al-Shaikh
Affiliation:
Imperial College of Science and Technology, Dept. of Civil Engineering, London, SW7, U.K.
H. K. Cheong
Affiliation:
Imperial College of Science and Technology, Dept. of Civil Engineering, London, SW7, U.K.
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Abstract

Tests have been undertaken in the Imperial College concrete laboratories to study the effect of cyclic loading upon the compressive strength, the stress-strain relationship and the energy absorption and dissipation characteristics of concrete prisms at variable strain rates. Comparison is made with prisms loaded monotonically at similar strain rates. Prisms were confined by high-tensile steel bolts inserted horizontally in two orthogonal directions through pre-formed ducts, and the annular space between ducts and bolts was grouted with high strength epoxy resin. Both steel and concrete deformational response was measured. Significant enhancement of the strength and ductility of the concrete was obtained. Specimens displayed large energy absorption and dissipation capacity under cyclic loading. The validity of an envelope curve to describe cyclic behaviour is discussed.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 64: Symposium S – Cement-Based Composites: Strain Rate Effects on Fracture , 1985 , 245
Copyright
Copyright © Materials Research Society 1986

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References

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