spall

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spall

(spawl),
1. A fragment.
2. To break up into fragments.
References in periodicals archive ?
Chipped and broken edges on porches, stairs and walkways are caused by spalling, impact from vehicles, dropped heavy loads or faulty concrete.
However, a sealer can help protect concrete that's prone to spalling from further deterioration.
Where reactivity was present, expansive forces were created that resulted in internal fracturing of the concrete and subsequent spalling.
When compressive forces reach high enough levels, spalling can occur because of the inability of joints or cracks to close due to the incompressibles.
The thermal reaction allows for the enlargement of the hole to the total width of the vein by breaking the rock in a spalling effect.
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.
Generally, spalling is caused by improper installation of sintering, yet is also associated with thermal cycling and mechanical stress conditions.
The result is, as the name implies, an internal bloating of the refractory that, being a brittle material, responds by cracking and spalling.