|
| |
| Property |
Test Method |
Value |
| Classification |
macroscope / microscope |
blue-black, micaceous, fine grain
slate |
| Absorption |
ASTM C121 |
0.104% |
| Bulk Density |
ASTM C97 |
174.4 lb/ft3 |
| Compressive Strength |
ASTM C170 |
25,800 lb/in2 |
| Modulus of Rupture |
ASTM C120 |
13,000 lb/in2 |
| Modulus of Elasticity |
ASTM C120, IITRI |
7,014,000 lb/in2 |
| Toughness |
IITRI |
56 in-lb/in2 |
| Flat Slab Strength |
RP 477 |
4840 lb load |
| Coefficient of Thermal Expansion |
ASTM E228 |
0.0000062 in/in/°F |
| Coefficient of Friction |
IITRI |
| Natural Cleft: |
|
Dry |
| 0.73 |
0.69 |
|
Wet |
| 0.73 |
0.69 |
| Sand Rubbed: |
|
Dry |
| 0.78 |
0.74 |
|
Wet |
| 0.80 |
0.74 |
|
| Abrasive Resistance |
ASTM C241 |
13.2 Ha 5-6 nonn's |
| Fire Resistance |
IITRI |
1800°F bloat
non-combustable |
| Acid Resistance |
ASTM C217 |
0.0018 in |
| Weather Resistance |
ASTM C215 IITRI |
29% modulus loss
-10% strength loss |
| Durability |
RP 477 |
0.004% weight loss -10%
strength loss |
| Life Expectancy |
observation of existing
structures |
no visible deterioration or
fading apparent |
|
