UFC 3-250-03
15 May 2001
Table 8-1
Aggregate Physical Properties
Test
Specification Requirements
Specific gravity (ASTM C 127)
--
L.A. Abrasion (ASTM C 131)
< 40 percent
Percent Fractured faces
+ 4.75 millimeter (No. 4)
> 70 percent
- 4.75 millimeter (No. 4)
> 70 percent
Percent flat and elongated
< 8 percent
(ASTM D 4791)
Table 8-2
Recommended Gradation for Open Graded Asphalt Mixture
Sieve Size
Specified Limits, Percent Passing
19 mm (3/4 inch)
100
12.7 mm (1/2 inch)
54 - 76
9.5 mm (3/8 inch)
38 - 60
4.75 mm (No. 4)
10 - 26
2.36 mm (No. 8)
8 - 16
600 Fm (No. 30)
4 - 10
75 Fm (No. 200)
1-3
Table 8-3
Aggregate Gradation for Slurry Grout
Sieve Size
Percentage by Weight Passing Sieves
1.18 mm (No. 16)
100
600 Fm (No. 30)
95 - 100
75 Fm (No. 200)
0-2
the requirements for wear and soundness specified for the aggregate in the open graded asphalt
concrete. Deviations from these aggregate requirements have resulted in significant construct ability
problems in the past.
(2) Filler. Some filler or material passing the 75F meter (No. 200) sieve will normally be present
in the aggregate used in the cement grout. When additional filler is required it should be a class F
(ASTM C 618) fly ash with a limit on the calcium oxide content of 5 percent by weight maximum. The fly
ash should have a minimum of 95 percent by weight of material passing the 75F meter (No. 200) sieve.
8-2
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