Spall

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spall

[spȯl]
(engineering)
To reduce irregular stone blocks to an approximate size by chipping with a hammer.
To break off thin chips from, and parallel to, the surface of a material, such as a metal or rock.
(geology)
A fragment removed from the surface of a rock by weathering.
A relatively thin, sharp-edged fragment produced by exfoliation.
A rock fragment produced by chipping with a hammer.
(mining engineering)
To break ore.
(ordnance)
A fragment torn from the surface of an armor plate.

Spall

A small fragment or chip dislodged from the face of a stone or masonry unit by a blow or by the action caused by the elements, such as a freezing and thawing cycle.

spall

A small fragment or chip removed from the face of a stone or masonry unit by a blow or by action of the elements.
References in periodicals archive ?
Mrs Spall said: "Words cannot explain how shocked and surprised I am, that something as awful as this can happen, to people like us who only want to do good for everybody and we seem to have been picked on for it.
When that water freezes, the potential increases for the reinforcement to corrode and concrete to crack and spall.
When spalls reached full depth, the condition was referred to as a blowup or crushing.
Mrs Spall said: "About 5 o'clock we were doing our normal day-to-day thing as people do and somebody stuck in the door what I would call something like a firework, but was actually a firebomb.
Marion Spall and her two daughters are to be rehoused after a fire was started at their front door.
The PET film, laminated with the glass, serves as a spall protection layer, keeping glass shards in place, whereas in standard laminated glass, an unshielded layer of glass faces the vehicle interior.