804Asphalt Materials

Asphalt Materials

804.1Performance Graded Asphalt Binder

1 Provide PGAB in accordance with the high- and low-grade temperatures specified.

804.1.1 Binder Properties

1 Provide binder in accordance with AASHTO M 320, excluding pressure aging vessel residue tests for dynamic shear , physical hardening, and direct tension. When the difference between specified high- and low-grade temperatures is at least 90, provide binder that also is in accordance with AASHTO T 301 with at least 60 percent elongation recovery. Test at 77 °F [25 °C] using RTFO residue, and sever the specimen immediately after elongation.

2 Do not provide or use PGAB with fibers or other discrete particles lar ger than 0.010 in [250 µm] or with carcinogenic modifiers.

3 Base asphalt may be modified with no greater than 1.00 percent phosphoric acid. Ensure the total phosphorus content does not exceed 3800 ppm.

804.1.2 Authorization

1 Ensure the supplier is listed on the department’s website as an authorized supplier for applicable grade(s) of PGAB. Information about suppliers is available on the WYDOT website.

804.1.3 Testing - Vacant

804.2Liquid Cut-Back Asphalt - Vacant

804.3Emulsified Asphalt

1 Provide and use a blend of asphalt binder, water, emulsifiers, and polymer, if specified. When specified, polymerize using at least 3 percent polymer by weight [mass] of the asphalt binder.

2 Ensure that emulsions show no separation, such as a white/milky appearance after mixing/stirring/agitating in tank, are smooth and homogeneous throughout, and are in accordance with the Materials Testing Manual . Provide pumpable emulsion suitable for application through a distributor without plugging or reducing flow through filters, piping, or nozzles.

Asphalt Materials SECTION 804

3 For the type of emulsified asphalt specified, provide in accordance with the following:

specified for CRS -2P and CRS -2L in Table 804.3- 1, Applicable Requirements: Emulsified Asphalt.

Asphalt Materials SECTION 804

Table 804.3-1 Applicable Requirements: Emulsified Asphalt Property AASHTO or ASTM Test Method Emulsion Type HFRS- 2P HFMS- 2P CMS- 2P, CRS- 2P, CRS-2L CQS- 1HP, CSS- 1HP RA1+ AEP PEP Demulsibility, 35 mL, 0.02 N, CaC12, % T59 Min. max.

---

(1)

--- (2) --- --- --- --- — —

— — Flash Point, COC, °F [°C]

T48

min.

—

—

—

—

[218] — — Residue, % (3) min. max.

—

—

—

—

(4)

—

— Oil Distillate by Volume,% T59 min. max. — 3.0 — 3.0 — 3.0 — --- — --- 2.0 7.0 — 2.0 Sieve, %

T59 max. 0.1

0.1

0.1

0.1

0.1 (5) — — Storage stability, 24 hours, %

T59

max.

1.0

1.0

1.0

1.0 (6) --- — — Miscibility, coagulation (7)

min.

--- --- --- --- None

— — Particle Charge

T59

--- --- --- --- --- Pass

— — Viscosity, Saybolt Furol, 122 °F [50 °C], sec T59

min. max.

77 °F [25 °C]

77 °F [25 °C]

77 °F [25 °C] TESTS ON DISTILLATION OR EVAPORATION RESIDUE Solubility in trichloroethylene, % T44

min.

97.5

97.5

97.5

97.5

--- 97.5 97.5 Kinematic Viscosity, cSt [mm²/sec] T201

min. max. --- --- --- --- --- --- --- ---

— — — — Penetration, 77 °F [25 °C], 100 g, 5 sec, 0.004 in [0.1 mm]

T49

min. max.

--- ---

Float test, 140 °F [60 °C], sec

T50

min.

--- --- --- —

— Ductility, in [mm] T51

min.

[750] 16 [400] 39 °F [4 °C] 16 [400] 39 °F [4 °C]

[400] --- — — Softening Point, °F [°C]

T53

min.

--- --- --- 135 [57]

--- — — Elastic Recovery, 77 °F [25 °C], % (8)

min.

39 °F [4 °C]

39 °F [4 °C] --- --- — —

Asphalt Materials SECTION 804

solution. Demulsibility is not applicable to CMS-2P.

recommendations.

sample to 300 ºF [148 ºC] until foaming stops; cool immediately and calculate results.

804.4Dust Control Agent

804.4.1 Dust Control Oil

1 Provide and use oil in accordance with Table 804.4.1-1, Dust Control Oil properties.

Table 804.4.1-1 Dust Control Oil Properties Test ASTM Method Minimum Maximum Kinematic Viscosity 100 °F [38 °C], cSt [mm2/ sec] D 2170 20 100 Flash Point (COC), °F [°C] D 92 200 [93] - Relative Density, 60/60 °F [15°C] D 1298 1.0000 1.2000 Water and Sediment, % D 96 - 0.5

804.4.2 Dust Control Brine Solution

1 Provide and use a solution containing from 28 to 35 percent magnesium chloride, as tested in accordance with ASTM E 449, in uncontaminated water; the department allows small amounts of sodium, potassium, and sulfate with other traceions.

804.5Asphalt Mastic for Field Coating

1 For field coating structures, provide and use asphalt mastic in accordance with AASHTO M 243.