Rocky, coarse and angular A-1-a fill used in a variety of applications including backfill replacement in muddy or unstable soils.
| ASTM C136 / AASHTO T27 | |
|---|---|
| Sieve Size | % Passing* |
| AASHTO M145 | |
| ASTM D4791 | Ratio= | 1:5 |
| 150 mm (6") | 100 |
| 100 mm (4") | 100 |
| 75.0 mm (3") | 100 |
| 50.0 mm (2") | 90 |
| 37.5 mm (1-1/2") | 87 |
| 25.0 mm (1") | 83 |
| 19.0 mm (3/4") | 80 |
| 12.5 mm (1/2") | 70 |
| 9.5 mm (3/8") | 64 |
| 4.75 mm (No.4") | 45 |
| 2.36 mm (No. 8) | 30 |
| 2.00 mm (No. 10) | 27 |
| 1.18 mm (No. 16) | 20 |
| 0.425 mm (No.40) | 14 |
| 0.300 mm (No.50) | 13 |
| 0.150 mm (No.100) | 10 |
| 0.075 mm (No.200) | 7.1 |
| ASTM | AASHTO | Physical Properties |
Result* |
|
|---|---|---|---|---|
| C 29 | T19 | Unit Weight | Unit Weight, lbs./cu.ft. | 116 |
| Voids | 28% | |||
| Type | Rodded | |||
| D1557 | T180 | Modified Proctor | Max. density, lbs./cu.ft | 137.6 |
| Optimum Moisture | 7.5% | |||
| ASTM C535 | L.A. Abrasion | large Coarse Loss | 20% | |
| Grading/Revolutions | 3/1000% | |||
| C 127 | T85 | Coarse Specific Gravity & Absorption | Bulk Specific Gravity (dry) | 2.565 |
| Bulk Specific Gravity, SSD | 2.594 | |||
| Apparent Specific Gravity | 2.643 | |||
| Absorption | 1.1% | |||
| C 88 | T104 | Soundness | Coarse Soundness Loss | 0.9% |
| Sodium No. of Cycles | 5 | |||
| Fine Soundness Loss | % | |||
| Magnesium No. of Cycles | % | |||
| D1883 | T193 | CBR | Surcharge = 10lbs CBR @ 0.1" | 99 |
| Swell% = 0.0% CBR @ 0.2" | 258 | |||
| D5821 | Fractured Face | 1 or 2 Faces | 1 | |
| Fractured Face, % | 100 | |||
| D2487 | Soil Classification | Group Symbol | CU = 5.96 | |
| Group Name | CC = 1.49 | |||