OEO Ontology

Overview / Open Energy Ontology / Class - cement
Label: cement
Definition:
Cement is a portion of matter that is made from limestone and clay; other elements may be present. It is used as a building material to set as a solid mass or is used as an ingredient in making mortar or concrete. It has a solid normal state of matter. It is the physical output of an industrial process and has a commodity role.

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portion of matter
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Definition:
A portion of matter is an aggregate of material entities that have a state of matter.

Editor note:
Portions of matter describe mass nouns like e.g. water, air and fuel. Mass nouns are uncountable, but portions of these can be quantified, like 1 glass of water, 1 m³ of air or 1 barrel of fuel. For further explanation please refer to: https://github.com/OpenEnergyPlatform/ontology/wiki/Explanation-on-mass-nouns