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Mihail Petkovski (University of Sheffield)
Friday 28 May 2010, 15:00-16:00
Experimental investigation of concrete under multiaxial compression and elevated temperatures
- 👤 Speaker: Mihail Petkovski (University of Sheffield)
- 📅 Date & Time: Friday 28 May 2010, 15:00 - 16:00
- 📍 Venue: Engineering Department - **LR3A**
Abstract
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.
Series This talk is part of the Engineering Department Structures Research Seminars series.
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