1.1 [no object] (Of ore, rock, or stone) break off in fragments: cracks below the surface cause slabs of material to spall off
More example sentences
- The elongation of the well bore is the result of compressive shear failure on intersecting conjugate planes, which causes pieces of the borehole wall to spall off.
- You are also to check on incidence of spalling or cracking concrete on the external faces of the buildings and similarly report with recommendations and estimate of cost.
- Though ornamented with beautiful huge rock-gripping bristlecones, the cliffs tend to spall off in big chunks and the ore body rock where the mine adits go clearly tends to cave in unless aggressively shored up.
A splinter or chip, especially of rock.
- Any cracks, chips, holes, dips or spalls should be repaired in order to achieve a flat surface.
- A slick finish won't get dusty, but be careful not to get air-entrained concrete where air can get entrapped below the troweled surface, leading to spalls.
- He struggled up a steep grade, slipping on the loose spall.
Late Middle English (as a noun): of unknown origin. The verb dates from the mid 18th century.
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