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=5:1
50.0 mm (2")100
37.5 mm (1-1/2")100
25.0 mm (1")36
19.0 mm (3/4")6
12.5 mm (1/2")3
9.5 mm (3/8")2
4.75 mm (No.4")2
2.36 mm (No. 8)1
0.075 mm (No.200)0.8

Test Results

ASTM AASHTO
Physical Properties
Result
C 29T19Unit WeightUnit Weight, lbs./cu.ft.93
Voids43%
TypeRodded
ASTM C535 L.A. Abrasionlarge Coarse Loss20%
Grading/Revolutions3/1000%
C 127T85Coarse Specific Gravity & AbsorptionBulk Specific Gravity (dry)2.550
Bulk Specific Gravity, SSD2.582
Apparent Specific Gravity2.634
Absorption1.3%
C 88T104SoundnessCoarse Soundness Loss1.5%
Sodium No. of Cycles5
Fine Soundness Loss%
Magnesium No. of Cycles%
C40T21Organic ImpuritiesCoarse Aggregate0.0%
C142T112Clay / Friable ParticlesCoarse Aggregate0.0%
Fine Aggregate%
C123T113Lightweight PiecesCoarse Aggregate0.0%
Fine Aggregate%
D5821 Fractured Face1 or 2 Faces1 = 100
Fractured Face, %2 = 99
D2487 Soil ClassificationGroup Symbol
Group NameQUARTZITE