Concrete Repair Terminology (X-Y-Z)

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Concrete Repair Terminology is prepared by the International Concrete Repair Institute. The cross-referenced terms provide definitions for commonly used words in concrete repair, restoration and protection.

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Revised April 2019

A | B | C | D | E | F | G | H | I | J-L | M | N-O | P | Q-R | S | T | U-V | W | X-Y-Z

- X -

X-ray diffraction

the diffraction of X-rays by substances having a regular arrangement of atoms; a phenomenon used to identify substances having such a structure.

X-ray fluorescence

characteristic secondary radiation emitted by an element as a result of excitation by X-rays, used to yield chemical analysis of a sample.

X-ray radiograph

an X-ray film, plate, or paper that is placed at the image plane and is used for recording an X-ray image of the object being examined.

- Y -

yellowing

discoloration of white or clear coatings caused by of aging..

yield

the volume of a freshly mixed material produced from a known quantity of ingredients; the total weight of ingredients divided by the unit weight of the freshly mixed material.

yield point

that point on the stress-strain curve when stress ceases to be linearly proportional to strain.

Young's modulus

see modulus of elasticity.

- Z -

zero-slump concrete

see concrete, zero-slump.

Zahn cup

an apparatus for the measurement of liquid or slurry viscosity expressed as the number of seconds required for the liquid or slurry to drain from the cup through a hole of definite diameter.

zinc-rich primer

a primer that contains a high enough concentration of zinc dust to make it electrically conductive when it dries so that it provides cathodic protection for ferrous materials.

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