Vapor barrier |
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Waterproof membrane placed under concrete floor
slabs that are placed on grade.
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Vellum glaze |
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A semi-mat glaze having a satin-like appearance.
(ASTM C 242).
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Vertical broken joint |
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Style of laying tile with each vertical row of tile
offset for half its length.
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Vitreous |
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-0.5 percent to 3 percent water absorption.
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Vitreous (Vitrified) |
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That degree of vitrification evidenced by low water
absorption. (See also Impervious; Nonvitreous;
Semivitreous.) (ASTM C 242). NOTE: The term vitreous
generally signifies less than t).5 per rent
absorption, except for flour and wall tilt and
lucvvoltage electrical porechtin which are
considered vitreous tip to 3.0 t)er cent water
adtsorption.
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Vitreous slip |
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A slip coating matured on a ceramic body, producing
a vitrified surface. (ASTM C 242).
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Vitreous tile |
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Tile with water absorption of more than 0.5 percent,
but not more than 3.0 percent. (ANSI A137.1-1980).
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Vitrification |
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The progressive reduction in porosity of a ceramic
composition as a result of heat treatment, or the
process involved. (ASTM C 242).
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Vitrification range |
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The maturing range of a vitreous body, producing a
vitrified surface. (ASTM C 242).
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Void |
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An unfilled space in a material of trapped air or
other gas.
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