bleeding (redirected from Hemmorage)

bleeding [′blēd·iŋ]

(chemical engineering)

The undesirable movement of certain components of a plastic material to the surface of a finished article. Also known as migration.

(engineering)

Natural separation of a liquid from a liquid-solid or semisolid mixture; for example, separation of oil from a stored lubricating grease, or water from freshly poured concrete. Also known as bleedout.

(materials)

The outward penetration of a coloring agent from a substrate through the surface coat of paint.

The movement of grout through a pavement from below a road surfacing material to the outer surface.

(textiles)

Referring to a fabric in which the dye is not fast and therefore comes out when the fabric is wet.

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bleeding

1. The upward penetration of a coloring pigment from a substrate through a topcoat of paint.

2. The oozing of grout from below a road-surfacing material to the surface in hot weather.

3. Exudation of one or more components of a sealant, with possible absorption by adjacent porous surfaces.

4. The autogenous flow of mixing water within, or its emergence from, newly placed concrete or mortar; caused by the settlement of the solid materials within the mass or by drainage of mixing water; also called water gain.

5. The diffusion of coloring matter through a coating from the substrate, or the discoloration that arises from such a process.