MS_164_004 Rev.pdf

Material Master Number (Stock Number) MS Spec. 164-004 11506 (24-05-5125) Rev. 12-20-2017 11507 (24-05-5130) 3 Pages

LOUISIANA

DEPARTMENT OF TRANSPORTATION AND DEVELOPMENT

SPECIFICATIONS

POLYMER MODIFIED ASPHALTIC MATERIALS

DESCRIPTION:

These specifications cover polymer modified asphaltic materials for road maintenance.

GENERAL REQUIREMENTS:

Polymer modified asphalt shall be prepared by the refining of petroleum. It shall be uniform in character, free from water, and shall not foam when heated to 350º. Asphalt shall be from the Approved Materials List.

Storage tanks, piping, retorts, booster tanks, distributors and other equipment used in delivering, storing or handling asphaltic materials shall be kept clean and in good operating condition and shall be operated in such manner as to avoid contamination of the contents with foreign materials.

Test methods shall be the latest in effect in addition to the ones included in this specification.

Final test results for polymer modified asphaltic materials will be applied to the proper table herein for conformance to specifications. Any deviation from the specifications will result in a payment adjustment as specified. If test results are such that a price adjustment would result from more than 1 test value, the payment adjustment for the greatest reduction shall apply.

The adjustment in pay for polymer modified asphaltic materials shall be applied only to samples taken at the point of delivery. Samples taken at the refinery shall conform to specification requirements; if the refinery sample fails to meet these requirements, the material will be rejected and shall not be shipped.

SAMPLING:

Sampling will be in accordance with the Materials Sampling Manual.

TABLE 1

POLYMER MODIFIED ASPHALT CEMENTS

Property

AASHTO

Test Method

PG76-22m PG70-22m

Spec. Deviation Spec. Deviation

100 90 or Remove

100 90 or Remove

Tests on Original Binder:

Rotational Viscosity @ 135°C, Pa·s 2 T 316 3.0- --- 3.0- ---

Dynamic Shear, 10 rad/s, G*/Sin Delta, kPa T 315 1.00+

@ 76°C 0.99- 1.00+ @ 70°C 0.99-

Dynamic Shear, 10 rad/s, Phase Angle, ° T 315 75°

@ 76°C --- --- ---

Flash Point, °C T 48 232+ --- 232+ --- Solubility, % 3 T 44 99.0+ --- 99.0+ --- Separation of Polymer, 163°C, 48 hours, degree C difference in R & B from top to bottom 4

ASTM

D7173

AASHTO

T 53

2- --- 2-

Tests on Rolling Thin Film Oven Residue: T 240

Mass Change, % T 240 1.00- --- 1.00- --- Dynamic Shear, 10 rad/s, G*/Sin Delta, kPa

T 315 --- 2.19- --- 2.19-

Multiple Stress Creep Recovery (MSCR), 67ºC, Jnr(3.2 kPa)

T 350 0.5- --- 2.0- ---

Multiple Stress Creep Recovery (MSCR), 67ºC, % Recovery (3.2 kPa)

T 350 Meets curve5 --- Meets curve5 ---

Tests on Pressure Aging Vessel Residue: R 28

Dynamic Shear, @ 26.5°C, 10 rad/s, G* Sin Delta, kPa T 315 6000- --- 6000- ------

Bending Beam Creep Stiffness, S, MPa @ -12°C. T 313 300- --- 300- ---

Bending Beam Creep Slope, m value,@ -12°C T 313 0.300+ --- 0.300+ ---

1Tank mixers are required. Submit written documentation of tank cleaning annually.

2The rotational viscosity will be measured to determine product uniformity. The rotational viscosity measured by the supplier shall be noted on the Certificate of Delivery. A binder having a rotational viscosity of 3.0 Pa·s or less will typically have adequate mixing and pumping capabilities. Binders with rotational viscosity values higher than 3.0 Pa·s should be used with caution and only after consulting with the supplier as to any special handling procedures and guarantees of mixing and pumping capabilities.

3Not all polymers are soluble in the specified solvents. If the polymer modified asphalt digested in the solvent will not pass the filter media, a sample of the base asphalt used in making the polymer modified asphalt should be tested for solubility.

If the solubility of the base asphalt is at least 99.0%, the material will be considered as passing.

4Prepare samples per ASTM D7173. Determine softening point of top and bottom per AASHTO T 53.

5As defined in AASHTO M 332

TABLE 2

ANIONIC EMULSIFIED ASPHALT

SS-1h

SPECIFICATION DEVIATION

PROPERTY TEST METHOD 100 80 50 or

Remove and

Replace1

Viscosity, Saybolt Furol @ 25º C, s AASHTO T 59 20-100 --- ---

Residue by Distillation, % by wt. AASHTO T 59 57+ 52 – 56 51-

Sieve Test, % (Retained on 850 μm) AASHTO T 59 0.1- --- --- Cement Mixing AASHTO T 59 2- --- ---

Settlement, 5-day, % AASHTO T 59 5.0- --- ---

TESTS ON RESIDUE BY DISTILLATION:

Penetration, 25º C, 100g, 5s, dmm AASHTO T 49 40 – 90 30 – 39 91 – 100

29- 101+

Solubility, % AASHTO T 44 97.5+ --- ---

Ductility, 25º C, 5 cm/min, cm AASHTO T 51 40+ 26 – 39 25- 1 At the Chief Engineer’s option.