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Title: Management of Cracks

Author(s): Juan Pablo Covarrubias

Publication: Concrete International

Volume: 33

Issue: 7

Appears on pages(s): 35-39

Keywords: cracking, contraction joint, elevated slab, mass concrete

Date: 7/1/2011

Abstract:
When concrete elements are restrained by base friction or lateral stiffness of support elements, cumulative strains arising from shrinkage and temperature changes can cause cracking. It is possible to provide contraction joints that minimize cracking, yet do not interfere significantly with construction schedules. By detailing contraction joints, the engineer can place cracks where they have minimal effect on structural performance; productivity during construction of elevated floors can be improved; and large placements can be avoided.




  

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