Wilson #4 Arema 1-1/2" Railroad Ballast

Wilson #4 AREMA 1-1/2" Railroad Ballast is a clean, 100% crushed granite. This Ballast is produced daily at Wilson Quarry to meet the American Railway Engineering and Mining Association (AREMA) #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.

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ASTM Properties

L.A. Rattler in accordance w/ ASTM C535 27%
Specific Gravity 2.82
Sodium Sulfate Loss in accordance w/ ASTM C88 4.8%
Unit Weight 100.7 lb / pcf

Sieve Analysis

Inches MM/UM Grading AREMA #4 (1986) ASTM C-33 #4
2" 50 mm 100 100 100
1-1/2" 37.5 mm 93 90 - 100 90 - 100
1" 25 mm 47 20 - 55 20 - 55
3/4" 19 mm 11 0 - 15 0 - 15
1/2" 12.5 mm -- -- --
3/8" 9.5 mm 4 0 - 5 0 - 5
1/4" 6.3 mm -- -- --
#4 4.75 mm 2 -- --
#200 75 um .5 0 - 1 0 - 1

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