spall

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spall

(spawl),
1. A fragment.
2. To break up into fragments.
References in periodicals archive ?
Spalling also occurs around steel posts and fasteners sunk into concrete.
Chipped and broken edges on porches, stairs and walkways are caused by spalling, impact from vehicles, dropped heavy loads or faulty concrete.
Secondary failure mechanisms became apparent: spalling of concrete, offset joints, cracks from restrained joints, and the buildup of incompressible material in open, unsealed joints and cracks.
Where reactivity was present, expansive forces were created that resulted in internal fracturing of the concrete and subsequent spalling. Reactivity problems were worst at open, unsealed joints and cracks where water gained free access.
This multi-building complex in Manhattan has been chronically suffering from spalling concrete; repeated repair projects using cementitious patches have failed to provide a lasting solution.
There were approximately 11,000 locations of spalling, half of which were patches going bad.
Spalling occurs when layers of sintered refractory lining suddenly "break" from the refractory wall.
This is an example of the coexistence of fluxing of the silica bond in the alumina lining and the spalling reaction that results from the spinel formation.