Used for many of the same functions as the smaller diameter ¾” Max rock, but where a coarser rock is specified or desired.

Sieve Results

ASTM C136 / AASHTO T27
Sieve Size% Passing*
ASTM D4791 | Ratio=1:5
50.0 mm (2")100
37.5 mm (1-1/2")98
25.0 mm (1")25
19.0 mm (3/4")3
12.5 mm (1/2")2
9.5 mm (3/8")2
4.75 mm (No.4")2
0.075 mm (No.200)1.1

Test Results

ASTM AASHTO
Physical Properties
Result*
C 29T19Unit WeightUnit Weight, lbs./cu.ft.96
Voids43%
TypeRodded
C131T96L.A. AbrasionSmall Coarse Loss22.7%
Grading/RevolutionsA/500%
ASTM C535 L.A. Abrasionlarge Coarse Loss27.0%
Grading/Revolutions2/1000%
C 127T85Coarse Specific Gravity & AbsorptionBulk Specific Gravity (dry)2.678
Bulk Specific Gravity, SSD2.697
Apparent Specific Gravity2.728
Absorption0.70%
C 88T104SoundnessCoarse Soundness Loss0.5%
Magnesium No. of Cycles5
Fine Soundness Loss%
Magnesium No. of Cycles%
D5821 Fractured Face1 or 2 Faces2
Fractured Face, %100