Civil Engineering Reference
In-Depth Information
Table 3.
(Cont'd.)
Name
Characteristics
Based on inorganic materials, e.g., portland cement; they are a mixture of cement, aggregate, and water; high
compressive strength and good chemical resistance (depending on cement and aggregate type); good for
fireproofing and high temperature service.
Cementitious
Contain high loading of metallic zinc dust; use silicate resin; cured by heating, application of a curing solution,
evaporation, or reaction with moisture depending on the type of coating; they are used as primers or one-coat
system on steels for corrosion protection; they are unaffected by most organic solvents; poor resistance to acid or
alkalis without topcoat; resistance to high temperature up to ~538°C (1000°F) without topcoat; abrasion resistance;
long service life, especially in marine environments.
Inorganic zinc-rich
Contain high loading of metallic zinc dust in organic binders; tend to have better compatibility with topcoat than
inorganic zinc-rich coatings; more tolerant to variations in surface preparation; long service life, especially in
marine and other environments.
Organic zinc-rich
