Compressive Strength
BS3921, ASTM C67
70-90 Mpa, 10283psi
Thermal Measurement
BS3921, ASTM C67
3.5x10-6 in 20-100°C range
Thermal Conductivity 1.3 W/mK
Thermal Shock Resistance
ASTM C484
No Damage
Absorption
BS3921, ASTM C67
5 Hour Boil 12
24 Hour Soak 5.8%
Frost Resistance
BS3921 ("F" category)
ASTM C67
No Damage
Acid Resistance
Resistant to chemicals found in
normal service conditions.
Susceptible to damage in contact
with Hydrofluoric Acid
Craze Resistance
BS6431, ASTM C424
Surface Hardness
Min 6 on Mohs Scale
Tolerance
BS3921, BS5385, ASTM C67
Generally ±2 on Linear
Dimensions
Fire Resistance
Incombustible
|
Durability
Vitrified ceramic materials are
unaffected by ageing,
weathering,
ultraviolet radiation or atmospheric
pollution.
For some restoration projects
or specific design requirements,
it may be more important to
achieve a good aesthetic
match
than to achieve
specific physical
properties
and tolerances.
Each project should be
individually considered.
Fixing and Cleaning
The importance of employing
companies who are
competent or
who have years of experience in
such matters can not
be stressed
highly enough.
All too often we
see some of our country's finest
buildings having been incorrectly
cleaned, causing
irreparable
damage to materials.
The fixing of
Terracotta and Faience should not
be underestimated. It is only with
experience
that their natural
characteristics are appreciated.
Shaws of Darwen will gladly advise
on both these important matters
and recommend specialist
companies competent to carry
out such work.
For general site handling, fixing,
safety and physical property
specifications, please contact
our Terracotta Sales Office. |
