1.3
FACTORY TESTS
1.3.1
Chemical Resistance
**************************************************************************
NOTE: The chemicals and strengths are those
considered necessary for use in food preparation and
serving areas of medium to large dining facilities.
For other types of projects modify the list of
chemicals to reflect the exposure likely to be
encountered.
**************************************************************************
Test mortar and grout in accordance with ASTM C 267 except as modified
herein. Immerse test specimens in the test solutions for 28 days, and
maintain solutions continuously at 79 degrees C 175 degrees F for furan and
60 degrees C 140 degrees F for epoxy. The test specimens shall not change
in weight more than 5 percent after immersion, or exhibit a compressive
strength of less than 90 percent of the compressive strength of specimens
that have aged in air at 21 to 26 degrees C 70 to 80 degrees F during
conditioning period. Test for chemical resistance to the following
solutions:
a.
Acetic acid, 5 percent
b.
Citric acid, 5 percent
c.
Lactic acid, 5 percent
d.
Sodium hypochlorite, 5 percent
e.
Trisodium phosphate, 5 percent
f.
Household ammonia (test at room temperature)
g.
Sugar, saturated solution
h.
Vegetable oil
1.3.2
After curing for 7 days at 21 to 26 degrees C 70 to 80 degrees F, the
mortar shall: (1) have a water absorption of not more than 0.5 percent
when tested in accordance with ASTM C 413; (2) have a hardness of not less
than 90 percent of its initial hardness immediately before exposure, when
tested after being exposed for 6 hours at 54 degrees C 130 degrees F for
epoxy resin mortar and 93 degrees C 200 degrees Ffor furan resin mortar.
Hardness tests shall be made on 10 by 20 mm 3/8 by 3/4 inch samples with a
Barcol Hardness Tester, within 30 seconds after the samples are removed
from the oven.
1.4
ENVIRONMENTAL CONDITIONS
Do not start
tile work unless ambient temperature of work area is at least
16 degrees C
60 degrees F and rising, and slab temperature is not less than
16 degrees C
60 degrees F. Maintain room and slab at these minimum
temperatures
without interruption while work is in progress and for at
least 3 days
after completion of work.
SECTION 09330
Page 5
Previous Page
