Amine hardening systems, beinga lkaline, provide ah igh degree of
compatibility of these systems for application to am ultitude of substrates
sucha sp oured-in-place and precast concrete, steel, wood,fi berglassreinforcedp lastics (FRP), brick, tile, ceramics, etc.
The most popular filler used for epoxy mortars and grouts is silica.
Unfortunately,t his precludes their use in hydrofluoric acid,o ther fluorine
chemicals, and hot, strong alkalies. Carbon-filled mortars and grouts are
available, however,w ith some sacrifice to workingp roperties. Fortunately,
theirm ostp opular applications have been industrial and institutional
whereby optimum physical properties are requiredand exposure to elevated
temperatures and corrosives are moderate.
Epoxys ystems have outstandingp hysical properties.T heya re the
premier products where optimum adhesion is as ervice requirement.
Amine hardening systems are the most popular for ambient-temperaturecuring epoxy mortars, grouts, and monolithic surfacings. These systems are
hygroscopic, and they can present allergenic responses to sensitive skin.
These responses can be minimized, or virtually eliminated, by attention to
personal hygiene and the use of protective creamsonexposed areas of skin,
i.e., face, neck, arms, and hands. Protective garments,i ncludingg loves, are
recommended when usinge poxy materials.
TABLE 1.3
General Corrosion Resistance of Epoxy Mortars
Hardeners
a
Corrodent at Room
Te mperature
Aliphatic
Amines
Modified Aliphatic
Amines
Aromatic Amines
Bisphenol
AF
Acetic acid 5–10%
CU
R
Acetone
UU
UU
Benzene
UU
RR
Butyl acetate
UU
UR
Butyl alcohol
RR
RR
Chromic acid 5%
UU
RR
Chromic acid 10%
UU
UR
Formaldehyde 35%
RR
RR
Gasoline
RR
RR
Hydrochloric acid to 36%
UU
RR
Nitric acid 30%
UU
UU
Phosphoric acid 50%
UU
RR
Sulfuric acid 25%
RU
RR
Sulfuric acid 50%
UU
RR
Sulfuric acid 75%
UU
UU
Trichloroethylene
UU
UR
a R, recommended; U, unsatisfactory.
Corrosion of Linings and Coatings
6
CAT8247—CHAPTER 1—6/10/2006—11:58—SRIDHAR—XML MODEL B–pp. 1–42
compatibility of these systems for application to am ultitude of substrates
sucha sp oured-in-place and precast concrete, steel, wood,fi berglassreinforcedp lastics (FRP), brick, tile, ceramics, etc.
The most popular filler used for epoxy mortars and grouts is silica.
Unfortunately,t his precludes their use in hydrofluoric acid,o ther fluorine
chemicals, and hot, strong alkalies. Carbon-filled mortars and grouts are
available, however,w ith some sacrifice to workingp roperties. Fortunately,
theirm ostp opular applications have been industrial and institutional
whereby optimum physical properties are requiredand exposure to elevated
temperatures and corrosives are moderate.
Epoxys ystems have outstandingp hysical properties.T heya re the
premier products where optimum adhesion is as ervice requirement.
Amine hardening systems are the most popular for ambient-temperaturecuring epoxy mortars, grouts, and monolithic surfacings. These systems are
hygroscopic, and they can present allergenic responses to sensitive skin.
These responses can be minimized, or virtually eliminated, by attention to
personal hygiene and the use of protective creamsonexposed areas of skin,
i.e., face, neck, arms, and hands. Protective garments,i ncludingg loves, are
recommended when usinge poxy materials.
TABLE 1.3
General Corrosion Resistance of Epoxy Mortars
Hardeners
a
Corrodent at Room
Te mperature
Aliphatic
Amines
Modified Aliphatic
Amines
Aromatic Amines
Bisphenol
AF
Acetic acid 5–10%
CU
R
Acetone
UU
UU
Benzene
UU
RR
Butyl acetate
UU
UR
Butyl alcohol
RR
RR
Chromic acid 5%
UU
RR
Chromic acid 10%
UU
UR
Formaldehyde 35%
RR
RR
Gasoline
RR
RR
Hydrochloric acid to 36%
UU
RR
Nitric acid 30%
UU
UU
Phosphoric acid 50%
UU
RR
Sulfuric acid 25%
RU
RR
Sulfuric acid 50%
UU
RR
Sulfuric acid 75%
UU
UU
Trichloroethylene
UU
UR
a R, recommended; U, unsatisfactory.
Corrosion of Linings and Coatings
6
CAT8247—CHAPTER 1—6/10/2006—11:58—SRIDHAR—XML MODEL B–pp. 1–42