The Structural Engineer > Archive > Volume 64 (1986) > Issues > Issue 15 > Creep and Prestress Losses in Brick Masonry
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Creep and Prestress Losses in Brick Masonry

The paper discusses movements in brick masonry caused by creep and considers its effect on prestress losses in post-tensioned brickwork. It follows almost 2 decades of research in which various specimens comprising brickwork walls, columns, and beams, with different types of brick and mortar, have been subjected to a sustained load at different stress levels. From the information obtained, a number of expressions are put forward for creep coefficients which can be fed into a simple theory for predicting prestress losses in post-tensioned brickwork members. A creep-time function was also obtained which was used in comparing experimental and theoretical creep strains in a loadbearing brickwork tower block, during its construction stage and later life. D. Lenczner