| Thickness: |
3/4" thick (+/-1/8)
1" to 1-3/4" thickness available with ribbed back.
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| Dimensional Tolerance Requirements: |
+/- 1/16" within the lot for 8" units and +/- 3/32 for 12" units
Ground edge available when required to ensure: plus 0", minus 1/16" for 8" units and plus 0", minus 3/2" for 12" units
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| Special Shapes: |
Variation of Shape from Specified Angle: +/- 1 degree
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| 24 hr Cold Water Absorption: |
Absorptions average below 6% as tested per ASTM C67
|
| Efflorescence: |
Rated "not effloresced" as tested per ASTM C67
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| Out of Square: |
+/- 1/16" as measured as measured per ASTM C67
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| Warpage: |
Consistent plane of +/- 1/16" as measured per ATSM C67
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| Tensile Bond Strength: |
Bond strength >250 psi average for flat back units as tested per modified ASTM E488
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| Freeze-Thaw Resistance: |
Testing of flat back brick indicates bond strengths >250 psi average with no detectable deterioration
(spalling, cracking, or chafing) after 300 cycles as tested per ASTM C666 Method B (modified)
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| Modulus of Rupture: |
MOR greater than 1,000 psi as tested per ASTM C67
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| Chemical Resistance: |
Rating of "not affected" as tested per ASTM C650
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| Surface Coloring: |
No observable difference in finish after 50 cycles as tested per ASTM C67
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| Black Surface Texture: |
3/4" back surface texture will be smooth.
Ribbed surface available with > 3/4" thickness
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Glen-Gery Meets PCI Requirements