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Roadbase – 1.5” UTBC

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High-quality roadbase that meets stringent UDOT specifications as well as demanding commercial applications.

Sieve Results

ASTM C136 / AASHTO T27
Sieve Size% Passing
AASHTO M145
ASTM D4791 | Ratio=1:5
37.5 mm (1-1/2")100
25.0 mm (1")91
19.0 mm (3/4")85
12.5 mm (1/2")77
9.5 mm (3/8")73
4.75 mm (No.4")56
1.18 mm (No. 16)35
0.300 mm (No.50)20
0.150 mm (No.100)14
0.075 mm (No.200)10

Test Results

ASTMAASHTO
Physical Properties
Result
C 29T19Unit WeightUnit Weight, lbs./cu.ft.121.0
Voids24%
TypeRodded
D1557T180Modified ProctorMax. density, lbs./cu.ft140.7
Optimum Moisture5.8%
D4318T89/90Liquid/Plastic LimitLiquid Limit0
Plastic Limit0
Plasticity IndexNP
C131T96L.A. AbrasionSmall Coarse Loss25%
Grading/RevolutionsB/500%
C 127T85Coarse Specific Gravity & AbsorptionBulk Specific Gravity (dry)2.552
Bulk Specific Gravity, SSD2.603
Apparent Specific Gravity2.688
Absorption2%
D1883T193CBRSurcharge = 10lbs CBR @ 0.1"79
Swell% = 0.0% CBR @ 0.2"113
D5821 Fractured Face1 or 2 Faces1 (Test Result 67)
Fractured Face, %2 (Test Result 65)

Chip – Washed, 3/8” x #16

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

Rock – Unwashed, 1.5” Maximum

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

Rock – Washed, ¾” Maximum

Washed angular rock used in concrete mix designs as well as gravel backfill where a very clean rock is specified.

Sand – Washed, Concrete

Washed sand produced to meet the highest standards for concrete production including U.D.O.T. and ASTM specifications.