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Also Abrams' water-cement ratio law. A law which states that the strength of a concrete mix is inversely related to the mass ratio of water to cement. As the water content increases, the strength of the concrete decreases. abrasion The process of scuffing, scratching, wearing down, marring, or rubbing away a substance or substrate. It can be intentionally imposed in a controlled process using ...
Concrete is a composite material composed of aggregate bonded together with a fluid cement that cures to a solid over time. Concrete is the second-most-used substance in the world after water, [1] and is the most widely used building material. [2] Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. [3]
The adhesion of concrete or grout to prestressing strands, wires or bars, or to unstressed reinforcement, either through friction or mechanical interlock. [1]: 9 bond strength The resistance to separation of hardened concrete or grout from prestressing strands, wires or bars, or from unstressed reinforcement.
In philosophy and the arts, a fundamental distinction exists between abstract and concrete entities. While there is no universally accepted definition, common examples illustrate the difference: numbers, sets, and ideas are typically classified as abstract objects, whereas plants, dogs, and planets are considered concrete objects.
3. do not need English in daily life 4. have both primary and secondary support-networks that function in their native language 5. have fewer opportunities to practice using their English They are learning, and their instructors are teaching, English as a foreign language. In English-speaking countries, they have integrative motivation, the ...
One can also speak of "almost all" integers having a property to mean "all except finitely many", despite the integers not admitting a measure for which this agrees with the previous usage. For example, "almost all prime numbers are odd". There is a more complicated meaning for integers as well, discussed in the main article.
Incontrovertible evidence and conclusive evidence (less formally, concrete evidence and hard evidence) [1] [2] are colloquial terms for evidence introduced to prove a fact that is supposed to be so conclusive that there can be no other truth to the matter; i.e., evidence so strong it overpowers contrary evidence, directing a fact-finder to a ...
In mathematics, a concrete category is a category that is equipped with a faithful functor to the category of sets (or sometimes to another category). This functor makes it possible to think of the objects of the category as sets with additional structure , and of its morphisms as structure-preserving functions.