The Structural Engineer > Archive > Volume 68 (1990) > Issues > Issue 3 > Visco-Elastic Behaviour in Stressed Brickwork
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Visco-Elastic Behaviour in Stressed Brickwork

Stressed brickwork exhibits a visco-elastic behaviour. A number of rheological models have been used in the past to explain this behaviour, notably the Maxwell, Kelvin and Burger models. In this paper, the author proposes a 'modified' Maxwell model to explain the behaviour of brickwork under a sustained load. Using this model, a number of practical problems can be solved such as change of stress with time in reinforced, post-tensioned and composite brickwork construction. The paper also explains the process of stress relaxation in confined brickwork. The problems are illustrated with examples. D. Lenczner