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

A

Abrasive—a solid substance that, owing to its hardness, toughness, size, shape, consistency, or other properties, is suitable for grinding, cutting, roughening, polishing, or cleaning a surface by friction or high-velocity impact* (ex: abrasive blasting)

Acrylic—type of resin polymerized from acrylic acid, methacrylic acid, esters of these acids, or acrylonitrile* (ex: elastomeric acrylic product)

Adhesion—the state in which two surfaces are held together by chemical interfacial forces, mechanical interlocking forces, or both* (ex: adhesion testing)

Aggregate—composed of mineral crystals of one or more kinds or of mineral rock fragments† (ex: broadcast aggregate to rejection)

B

Binder—the nonvolatile portion of the vehicle of a formulated coating material*

-borne (-based)—transported or transmitted by^† (ex: water-borne epoxy primer)

Broadcast—cast or scattered in all directions^† (ex: broadcast aggregate to rejection)

Brush-off blast cleaned surface—an abrasive blast cleaned steel surface that is free of all visible contaminants and foreign matter but may have some tightly adherent mill scale, rust, or coating. [See NACE No. 4/SSPC-SP 7 for detailed specification.]*

C

Coating—(1) a liquid, liquefiable, or mastic composition that, after application to a surface, is converted into a solid protective, decorative, or functional adherent film. (2) In a more general sense, a thin layer of solid material on a surface that provides improved protective, decorative, or functional properties*

D

Delamination—(1) separation of layers in a material. (2) a separation between one or more coats from another coat within a coating system [contrast with disbondment] (3) a separation of the concrete, usually in layers, from the reinforcing steel at their interface, usually as a result of corrosion* (ex: coating delamination)

E

Elastomeric—any of various elastic substances resembling rubber† (ex: elastomeric acrylic product)

F

Film—a thin, not necessarily visible layer of material* (ex: dry film thickness) 

G

Grit—small particles of hard material (e.g., iron, steel, or mineral) with irregular shapes that are commonly used as an abrasive in abrasive blast cleaning* (ex: 80-grit garnet)

H

Hand tool cleaning—removal of loose rust, loose mill scale, and loose coating by hand chipping, scraping, sanding, and wire brushing [See SSPC-SP 2.]*

I

Intumescence—the swelling or bubbling of a coating usually caused by heating. The term is commonly used in aerospace and fire-protection applications.* (ex: intumescent coating system) 

J

K

L

Lining—a coating or layer of sheet material adhered to or in intimate contact with the interior surface of a container used to protect the container against corrosion by its contents and/or to protect the contents of the container from contamination by the container material* (ex: application of protective lining) 

M

Mil—a unit of length equal to one thousandth of an inch used especially in measuring thickness^† (ex: average of 3 mils)

Micron/micrometer/µm—a unit of length equal to one millionth of a meter† (ex: average of 76.2 microns)

N

Near-white metal blast cleaning—an abrasive blast cleaned steel surface that is free of all visible contaminants and foreign matter, but may have some random staining on no more than 5 percent of the surface area. [See NACE No. 2/SSPC-SP 10 for detailed specification.]*

O

Overspray—spray material that does not adhere in spray painting^† (ex: protect the cars from overspray)

P

Pigment—a solid substance, generally in fine powder form, that is insoluble in the vehicle of a formulated coating material. It is used to impart color or other specific physical or chemical properties to the coating* (ex: the way the pigment laid down)

Pinhole—a minute hole through a coat or coats that exposes an underlying coat or the substrate* (ex: pinholes, holidays, or other defects)

Polyurethane—a polymer formed by reaction of an isocyanate with a polyol (hydroxyl-containing material). When used as a coating binder, it generally produces a tough, durable, glossy protective coating with good chemical and ultraviolet light resistance.* (ex: spray polyurethane foam)

Pot life—the maximum elapsed time during which a coating can be effectively applied after all components of the coating have been thoroughly mixed* (ex: substantially shorter pot life)

Power tool cleaning—removal of loose rust, loose mill scale, and loose coating by power tool chipping, descaling, sanding, wire brushing, and grinding. [See SSPC-SP 3.]*

Primer/prime coat—a coating material intended to be applied as the first coat on an uncoated surface. The coating is specifically formulated to adhere to and protect the surface as well as to produce a suitable surface for subsequent coatings* (ex: water-borne epoxy primer)

Proportioner—one that proportions: a device for securing proportions in a mixture† (ex: applied using a hydraulic proportioner)

Q

QA (Quality Assurance)—a program for the systematic monitoring and evaluation of the various aspects of a project, service, or facility to ensure that standards of quality are being met^† 

QC (Quality Control)—an aggregate of activities such as design analysis and inspection for defects designed to ensure adequate quality especially in manufactured products† 

R

Recoat—to coat again^† (ex: sand and recoat minor defects)

Resin—a clear to translucent, solid or semisolid, viscous organic substance, often of relatively high molecular mass, which exhibits a tendency to flow when subjected to stress and usually has a softening or melting range. (Natural resins originate from secretions of certain plants and insects. Synthetic resins are physically similar to polymerized synthetic materials, either thermoplastic or thermosetting, which are used to form plastics. Resins are commonly used as the binder in various paints, coatings, adhesives, and synthetic plastics.)* (ex: based on an alkyd resin)

S

Scarify—to break up, loosen, or roughen the surface of^† (ex: scarify it and install)

Shot blasting—abrasive blast cleaning using metallic (usually steel) shot as the abrasive* (ex: shot blasting the concrete)

Silicone—any of various polymeric organic silicon compounds obtained as oils, greases, or plastics and used especially for water-resistant and heat-resistant lubricants, varnishes, binders, and electric insulators^† (ex: silicone coating system)

Silica—any of various polymeric organic silicon compounds obtained as oils, greases, or plastics and used especially for water-resistant and heat-resistant lubricants, varnishes, binders, and electric insulators^† (ex: enhanced silica standards)

Solvent—a usually liquid substance capable of dissolving or dispersing one or more other substances^† (ex: solvent-free sealant)

Solvent cleaning—removal of oil, grease, dirt, soil, salts, and contaminants using organic solvents or other cleaners such as vapor, alkali, emulsion, or steam. [See SSPC-SP 1.]*

Spalling—the spontaneous chipping, fragmentation, or separation of a surface or surface coating* (ex: prevention of concrete spalling)

Steel shot—small particles of steel with spherical shape that are commonly used as an abrasive in abrasive blast cleaning or as a selected medium for shot peening* (ex: surface preparation consisted of steel shot)

Substrate—a substance acted upon† (ex: waterproofing the substrate)

Surface profile/anchor pattern—the irregular peak and valley profile on a bare surface that can result from operations such as abrasive blast cleaning or power tool cleaning* (ex: concrete surface profile)

T

Topcoat/finish coat—the final coat of a coating system* (ex: the topcoat was white)

U

Urethane—not a preferred term, but commonly used to refer to polyurethane*

V

Vehicle—the liquid portion of a formulated coating material*

W

Water cleaning—use of pressurized water discharged from a nozzle to remove unwanted matter from a surface*

Wet film gauge/gage—device for measuring wet film thickness of a coating*

White metal blast cleaning—an abrasive blast cleaned steel surface that is free of all visible contaminants, foreign matter, and staining. [See NACE No. 1/SSPC-SP 5 for detailed specification.]*

X

Y

Yield—the amount or quantity produced or returned^† (ex: a high-yield roof coating) 

Z