A001Badlands.pdf

E-109

SD PRA BADL 10(7)

Dillon Pass

NPS PMIS NO. 86786

(c) Fractured faces, ASTM D 5821 (one or more) 90% min.

(d) Fine aggregate angularity, AASHTO T 304 (method A) 40% min.

(e) Flat and elongated particles, ASTM D 4791 (1:5 ratio, 10% max.

+ ⅜ inch sieve, calculated by mass, weighted average)

(f) Sand equivalent AASTHO T 176 (referee method, alt 2) 45 min.

(g) Gradation. Size, grade and combined the aggregate fractions in mix proportions that result in a composite blend meeting the specified gradation. Nominal maximum size is one sieve size greater than the first sieve to retain more than 10 percent of the combined aggregate. Test according to AASHTO T 27 and T 11.

(1) See Table 703-12 for Superpave aggregate gradation.

(2) See Table 703-4 for Hveem or Marshall aggregate gradation.

For surface course, do not use aggregates known to polish or carbonate aggregates containing less than 25 percent by mass of insoluble residue when tested according to ASTM D 3042.

703.10 Asphalt Surface Treatment Aggregate.

Delete lines (a) through (h) and substitute the following:

(a) Gradation Table 703-7

(b) Los Angeles abrasion, AASHTO T 96 40% max.

(c) Sodium sulfate soundness loss (5 cycles) 12% max.

AASHTO T 104

(d) Fractured faces, one or more, ASTM D 5821 90% min.

(e) Flat and elongated particles, 1:3 ratio. + ⅜ inch sieve, 10% max.

calculated by mass, weighted average, ASTM D4791

(f) Clay lumps and friable particles, AASHTO T 112 1.0% max.

(g) Adherent coating, ASTM D 5711 0.5% max.

Table 703-7. Delete Table 703-7 and substitute the following:

Table 703-7

Amendment A001 2-13-12 aaron.sanford Cross-Out

Untitled

CENTRAL FEDERAL LANDS HIGHWAY DIVISION

12300 WEST DAKOTA AVENU, SUITE 360

LAKEWOOD, COLORADO 80228

ATTENTION: LORI KLIETHERMES

1:

Remove Page E-109 and replace with new page E-109 amended on Feb 13, 2012.

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