AAMA 800 Flashcards
(60 cards)
What is the performance requirement for racking in narrow-joint seam sealers?
(AAMA 800)
No cohesive breaks or loss of adhesion from flexing a T-shaped assembly, 10 degrees each direction.
How long are narrow-joint seam sealer samples conditioned for racking tests and at what temperature?
(AAMA 800)
4 days at 180 degrees.
How long are narrow-joint seam sealer samples conditioned for water resistance testing and at what temperature?
(AAMA 800)
7 days at 180 degrees, after 6 day cure.
How is water resistance of narrow-joint seam sealers confirmed per AAMA 800?
No voids, cracks, separation or breakdown of the sealant after holding water for 14 days.
Per AAMA 800, how is low temperature flexibility demonstrated for narrow joint seam sealers?
What ASTM Standard is referenced for the test?
No cracks or loss of adhesion in a cold-conditioned sample.
ASTM C734
How is compliance for vehicle migration evaluated in narrow-joint seam sealers per AAMA 800?
What standard is referenced?
No vehicle migration from the compound edge is allowed.
ASTM 2203
What are the allowable slump levels for the two types of narrow joint seam sealers, per AAMA 800?
For 803.3 Type 1 sealers, <0.1 inch
For 803.3 Type 2 Sealers, > 0.1 inch
What is the acceptable threshold for peel adhesion of narrow joints seam sealers?
Is the sample tested before or after water immersion?
90% cohesive failure of 5 lbf/in.
The sample is tested before and after immersion.
AAMA 800 - Narrow Joint Sealer samples are conditioned at ____ deg. for __ days prior to testing for Surface integrity.
180 degrees for 14 days
ASTM C661
AAMA 800 - 803.3 defines two types of Sealers, what are they?
Type 1 - Non-sag <0.1” slump
Type 2 - Self Levelling > 0.1” slump
Narrow Joint Seam Sealers are tested for 8 performance requirements, what are they?
I’ve used the abbreviation NJS in these flash cards.
Hint: Think about visual, tactile assessment, material characteristics and performance, and the most fundamental function.)
Integrity - Surface Integrity Hardness Peel Adhesion Slump Vehicle Migration Flex - Low Temp. Flexibility Water Resistance Racking
Results of an AAMA 800 Expanded Cellular Foam Glazing Tape Peel test are reported in what units?
Lb/ft / inch of tape width.
Per AMA 800, Compression SET in Expanded Cellular Foam Glazing Tape is determined by:
Holding the tape in 25% compression for 22 hours, followed by 24 hour recovery. Final thickness is compared to original thickness to determine the % of compression set.
AAMA 800 - 2.19 - How are the Expanded Cellular Foam Glazing Tape samples conditioned prior to testing?
24 hours each at 32 deg and 120 deg.
In AAMA 800 - 2.18, at what temperatures are Expanded Cellular Foam Glazing Tape samples conditioned for tensile adhesion?
How many samples are tested
3 assemblies tested at each of the following:
1hr at 77
1 hr at 120
1 hr at 32
Total of 9 samples
How many cycles are used to test water penetration performance of Expanded Cellular Foam Glazing Tape per AAMA 800-2.17?
What temperatures and duration are used in each cycle?
20 cycles of 24 hours each consisting of;
4 hrs at -20 deg
4 hrs at 180 deg
16 hrs at 77 deg.
That’s one cycle - repeat 19 more times.
How is the water penetration performance of Expanded Cellular Foam Glazing Tape determined in AAMA 800?
Sample adhered in a u-shape vessel between two pieces of glass then compressed 25%. Water loss from the vessel must be less than 15% for both Type 1
What are the acceptable water absorption levels for Expanded Cellular Foam Glazing Tapes per AAMA 800?
Type 1 tapes: Max 7%
Type 2 tapes: Max 10%
Prior to low temp flexibility test, the samples of Back-bedding mastic-type glazing tapes and Expanded Cellular Foam Glazing Tape are heated to what temperature for how long?
180 degrees for 14 days.
AAMA 800: What is the process for water absorption testing of Expanded Cellular Foam Glazing Tape?
Submerge in water for 3 minutes in a vacuum chamber.
What are the temperatures used for the low temperature flexibility tests of
BBMTGT
and
Expanded Cellular Foam Glazing Tape
7 deg
and
0 deg
Low Temperature flexibility of ECFGT is tested at what temperature?
0 Deg. F.
How is Compression deflection of Expanded Cellular Foam Glazing Tape tested per AAMA 800?
Test A. Tape is compressed between two plates to a thickness reduction of 25%. The amount of load required for this is recorded and used to calculate force/area.
Test B. Compressive force is calculated again after the compression is held for 60 seconds.
Compression deflection in Expanded Cellular Foam Glazing Tape is defined by AAMA 800 as;
How well the tape accepts compression without permanent deformation.