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Rock – Unwashed, 3/4” or 1” Maximum

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Used for various backfill and bedding applications as well as underneath concrete slabs or ground cover for gravel driveways, this angular and durable rock meets a core need on many construction projects.

Sieve Results

ASTM C136 / AASHTO T27
Sieve Size% Passing
AASHTO M145
ASTM D4791 | Ratio=5:1
37.5 mm (1-1/2")100
25.0 mm (1")100
19.0 mm (3/4")98
12.5 mm (1/2")50
9.5 mm (3/8")7
4.75 mm (No.4")3
2.36 mm (No. 8)2
0.300 mm (No.50)2
0.150 mm (No.100)2
0.075 mm (No.200)1.7

Test Results

ASTMAASHTO
Physical Properties
Result
C 29T19Unit WeightUnit Weight, lbs./cu.ft.94
Voids91%
TypeRodded
D4318T89/90Liquid/Plastic LimitLiquid Limit0
Plastic Limit0
Plasticity IndexNP
C131T96L.A. AbrasionSmall Coarse Loss20%
Grading/RevolutionsB/500%
C 127T85Coarse Specific Gravity & AbsorptionBulk Specific Gravity (dry)2.535
Bulk Specific Gravity, SSD2.570
Apparent Specific Gravity2.626
Absorption1.4%
C 88T104SoundnessCoarse Soundness Loss1.1%
Sodium No. of Cycles5
Fine Soundness Loss%
Sodium 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 2
Fractured Face, %100/100

Chip – Washed, Gyro #4 x #16

Washed fine angular chip

Chip – Washed, Standard, 3/8” x #16

Washed angular ‘pea gravel’ that can be used as under slab material or certain backfill applications.

Chip – Washed, Tank Bedding, 3/8” x #8

Washed chip that meets underground tank bedding specifications.

Fill – Hardpac, 3/8” Minus

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Fill – Structural, Rocky – 3″ minus

Rocky, coarse and angular A-1-a fill used in a variety of applications including backfill replacement in muddy or unstable soils.