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Rock – Washed, 3/4”, 1”, or 1.5″ Max.

  • roca_washed_3_4__rock 560-ROCA
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Washed angular rock used in concrete mix designs as well as gravel backfill where a very clean rock is specified.

Sieve Results

ASTM C136 / AASHTO T27
Sieve Size% Passing
ASTM D4791 | Ratio=1:5
25.0 mm (1")100
19.0 mm (3/4")98
12.5 mm (1/2")62
9.5 mm (3/8")36
4.75 mm (No.4")3
2.36 mm (No. 8)1
0.075 mm (No.200)0.3

Test Results

ASTMAASHTO
Physical Properties
Result
C 29T19Unit WeightUnit Weight, lbs./cu.ft.106
Voids35%
TypeRodded
C131T96L.A. AbrasionSmall Coarse Loss19%
Grading/RevolutionsB/500%
C 127T85Coarse Specific Gravity & AbsorptionBulk Specific Gravity (dry)2.620
Bulk Specific Gravity, SSD2.630
Apparent Specific Gravity2.646
Absorption0.4%
C 88T104SoundnessCoarse Soundness Loss0.2%
Sodium No. of Cycles5
Fine Soundness Loss%
Sodium No. of Cycles%
C40T21Organic ImpuritiesCoarse AggregateLighter Plate #1%
C142T112Clay / Friable ParticlesCoarse Aggregate0%
Fine Aggregate%
C123T113Lightweight PiecesCoarse Aggregate0%
Fine Aggregate%
D5821 Fractured Face1 or 2 Faces1 (Test Result 2)
Fractured Face, %39 (Test Result 32)
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Washed angular ‘pea gravel’ that can be used as under slab material or certain backfill applications.

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