Rock pocket | Article about rock pocket by The Free Dictionary
A porous, mortar-deficient portion of hardened concrete; consists primarily of coarse aggregate and open voids; results from the leakage of mortar from the concrete form, separation (segregation) during placement, or insufficient consolidation.
References in periodicals archive
Games' physics-based puzzler is zany and humorous and works incredibly well.
Five specimens of the rock pocket
mouse (TTU 47221-47225) were collected from Ward County on 25 July 1987 from two miles west of Barstow.