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Experimental investigation of concrete under multiaxial compression and elevated temperatures

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If you have a question about this talk, please contact Katerina Ondrova.

Concrete in massive structures such as dams, nuclear reactor vessels or large piers of long span bridges, is subjected to true multiaxial stress conditions (1 ̸= 2 ̸= 3). These structures are usually treated as three-dimensional continua with generally non-linear relationship between load and deformation, usually expressed in incremental form {Δ} = where the operator [D], that links the stress and strain increments, is the tangent stiffness matrix of the material. When the material is loaded to peak stress levels, [D] changes gradually as a result of developing damage. This seminar presents (i) mac2T , Sheffield’s unique facility for multiaxial compression, (ii) an experimental investigation of concrete behaviour under multiaxial compression and (iii) a novel experimental method for determining the evolution and orientation of localisation planes in concrete from global stress-strain measurements.

This talk is part of the Engineering Department Structures Research Seminars series.

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