Wilson 1 1/2" x 3/4" Railroad Ballast
Wilson 1½" x ¾" Railroad Ballast is a clean, 100% crushed granite. This Ballast is produced daily at Wilson Quarry to meet the American Railway Engineering Association (AREA) #4 Ballast Specifications as well as ASTM C-33 Size #4. This product has been used by the Railroad as Ballast Aggregate since the late 1800’s. This type of rock is typically gray in color.
ASTM Specifications & Physical Properties
| L.A. Rattler in accordance w/ ASTM C535 | 27% | Sodium Sulfate Loss in accordance w/ ASTM C88 | 4.8% |
| Specific Gravity | 2.82 | Unit Weight | 100.7 lb / pcf |
Sieve Analysis
| Inches | MM / UM | A.R. Wilson Grading* | Area #4 | |
|---|---|---|---|---|
| 2" | 50 mm | 100 | 100 | |
| 1 1/2" | 37.5 mm | 93 | 90 - 100 | |
| 1" | 25 mm | 47 | 20 - 55 | |
| 3/4" | 19 mm | 11 | 0 - 15 | |
| 1/2" | 12.5 mm | |||
| 3/8" | 9.5 mm | 4 | 0 - 5 | |
| 1/4" | 6.3 mm | |||
| #4 | 4.75 mm | 2 | ||
| #200 | 75 um | .5 | 0 - 1 |
*Grading results are typical
Branch Availability
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- A.R. Wilson Quarry
- 1900 Quarry Road
- Aromas, CA 95004
- 831.768.2380
Wilson 1 1/2" x 3/4" Railroad Ballast
