||(Environmental Engineering) A fossilized organic material present in oil shale and some other sedimentary rocks.
||(Environmental Engineering) Organic compounds with two hydrocarbon groups bonded to a carbonyl group.
||(Concrete Engineering) A finely ground high density plaster composed of anhydrous, (calcined or "dead burned") gypsum, the set of which is accelerated by the addition of other materials.
||(Concrete Engineering) A device for determining the consistency of fresh concrete. It is sometimes used as an alternative to the slump test.
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