Natural Stone is continued from previous page.
PORCELAIN/CERAMIC TEST RESULTS
At American Olean, we never stop searching for smart, new solutions within
our industry. So, we're proud to be among the first to join the Tile Council of
North America in testing our products with DCOF AcuTest , a new industry
standard for measuring the dynamic coefficient of friction (DCOF). The new
standard assesses a product's suitability for the commercial environment and
the specific usability needs of the application.
A MEASURE OF FRICTION
In layman's terms, friction is the force that resists the sliding motion of one
surface against another. Contaminants, such as liquids, can change this value.
There are two types of friction: static (SCOF) and dynamic (DCOF). SCOF is
the ratio of forces necessary to start two surfaces sliding. This is what the
former ASTM C1028 static test measured. DCOF is the ratio of forces
necessary to keep two surfaces sliding.
OUT WITH THE OLD. IN WITH THE NEW.
The methodology used by AcuTest (ANSI 137.1-2012, Section 9.6 for DCOF)
has become the new industry standard because it's the most accurate way to
determine whether or not a product is suitable for a commercial environment.
Just as the speed of a car can be measured in mph and kph, DCOF uses a
different scale. For example, the new .42 wet (DCOF) is replacing the old
reference of .60 COF wet, which has long been the benchmark for friction
in commercial applications.
The new, more stringent DCOF AcuTest uses a portable robot that, unlike
ASTM C1028, gives realistic values on very smooth surfaces.
While the industry standard is changing, the quality you can count on from
American Olean remains the same. Visit www.americanolean.com/DCOF
to learn more.
WATER ABSORPTION, ASTM C373-88
Water absorption is measured using ASTM C373-88. Individual tiles are
weighed, saturated with water, then weighed again. The percent difference
between the two conditions is referred to as the water absorption value.
Tiles are classified according to water absorption percentages as follows:
Tiles exhibiting 0.5% or less
Tiles exhibiting more than 0.5%
but not more than 3.0%
Tiles exhibiting more than 3.0%
but not more than 7.0%
Tiles exhibiting more than 7.0%.
SCRATCH HARDNESS (MOH'S SCALE RATINGS)
The relative hardness of glazed tile is an important issue that should be
addressed when selecting a tile. The test is performed by scratching the
surface of the tile with different minerals and subjectively assigning a "MOH's
Scale Hardness" number to the glaze. The softest mineral used is talc
("1" rating), the hardest is a diamond ("10" rating). Other minerals of varying
hardness provide MOH's Scale Hardness values of 5 to 7, which are suitable
for most residential floor applications. A value of 7 or greater is normally
recommended for commercial applications.
BREAKING STRENGTH CERAMIC TILE, ASTM C648-04
Ceramic tiles used on floors and walls must be able to withstand the
expected load-bearing capacity of various installations. The tile industry uses
ASTM C648-04 to determine the strength and durability of the tile. A force is
applied to an unsupported portion of the tile specimen until breakage occurs.
The ultimate breaking strength is then recorded in pounds. Final selection
of the tile should be based upon the breaking strength and the appropriate
installation method. Tile integrity is critically dependent upon proper
installation. American Olean recommends strict adherence to industry
installation guidelines set forth in ANSI A108, A118 and A136.
CHEMICAL RESISTANCE, ASTM C650-04
Chemical resistance is measured using ASTM C650-04. A tile sample is
placed in continuous contact with a variety of chemicals for 24 hours, rinsing
the surface and then examining the surface for visible variation.
ABRASION RESISTANCE, ASTM C1027-99
The durability of glazed tile is measured, subjectively, by observing the
visible surface abrasion of the tile when subjected to the ASTM C1027-99
testing procedure. American Olean evaluates glazed tile recommended for
floor applications using this test method, which includes the following
The American Society for Testing and Materials (ASTM) and the American
National Standards Institute (ANSI) are nationally recognized organizations,
which identify and develop industry test methods and technical standards.
Neither ASTM nor ANSI establish an industry standard identifying a
minimum COF value whereby ceramic tile may be labeled "slip resistant".
All Standard Grade ceramic tile products manufactured by or for
American Olean meet or exceed the requirements of ANSI A137.1.
See product pages for series-specific technical data.
Not recommended for use on floors.
Light Traffic -
Residential floor coverings in areas subject
to soft-soled footwear or normal footwear traffic, without
scratching dirt (i.e. domestic bathrooms and bedrooms
without exterior access).
Light to Medium Traffic -
Residential floor coverings in
areas subject to soft-soled footwear or normal footwear
traffic with small amounts of scratching dirt (i.e. rooms in
the living areas of homes except kitchens, entrances and
other areas that may be subjected to high usage).
Medium to Heavy Traffic -
Residential or light
commercial may withstand normal footwear and regular
traffic, with some dirt and/or other abrasives present in
limited quantities. Tile in this class may be used in light
commercial installations with limited foot traffic and with
no direct access to the outside. Examples may include
residential kitchens and hallways with limited traffic from
Heavy Traffic -
Residential and commercial floor coverings
subjected to considerable traffic and scratching dirt (i.e.
entrances, workrooms, inns, exhibition halls, and sales
rooms, as well as other rooms in public and private
buildings). Floors should be adequately protected against
scratching dirt at the entrances to buildings by either floor
mats or some other footwear cleaning device.
Heavy Traffic -
Heavy commercial floor coverings subject
to heavy traffic with very abrasive soil.
DEFINITION OF INDUSTRY STANDARDS
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