1002.01 ASPHALT MATERIALS. Asphalt cement and emulsions shall
be from the Approved Materials List. Asphalt shall be prepared by the refining of petroleum. Asphalt shall be uniform in character, free from water, and shall not foam when heated to 350°F (177°C). Refinery or supplier storage tanks, piping, retorts, booster tanks, and other equipment used in delivering, sto ring, or handling asphalt materials shall be kept clean and in good operating condition and shall be operated as to avoid contamination of the contents with foreign materials. Final test results for asphalt materials will be applied to the proper table in this Section for conformance to specifications. Samples taken at the refinery or supplier shall comply with specification requirements. When the refinery or supplier sample fails to meet these requirements, the material will be rejected and shall not be shipped to the jobsite. When asphalt materials sampled at the point of delivery do not comply with specification requirements, and in the opinion of the engineer have resulted in an unsatisfactory product based on an investigation, the materials shall be r emoved and replaced or otherwise corrected at no direct pay. Payment adjustment, when required, shall apply to the quantity of material represented by the sample. If no specific pay item exists, then the invoice price for the material will be used.
1002.02 Asphalt Material Additives.
1002.02.1 Anti-Strip: Anti-strip additives for asphalt materials shall
be from the Approved Materials List. Anti-strip additives shall be tested in accordance with DOTD TR 317.
1002.02.2 Crumb Rubber: Waste Tire Rubber must be pre-
qualified by the Materials Laboratory. The maximum size of rubber particles shall be 30 mesh crumb (90-100 percent passing the No. 30 sieve) with a maximum replacement of 10 percent by weight of asphalt material. No cryogenic crumb rubber is allowed.
1002.02.3 Polymers: Polymer additives that are pre-blended with
the asphalt material will be allowed. In-line blending may be allowed with approval from the Materials Engineer Administrator.
1002.02.4 Warm Mix Additives (WMA): A WMA is foamed water
or a chemical additive that allows for asphalt to be mixed and placed at a lower temperature, while maintaining or enhancing the ease of compaction. WMA shall be from the Approved Materials List.
1002.02.5 Fibers: A cellulose or mineral fiber, used to prevent
draindown or to serve as filler must be pre-approved by the Department.
1002.02.5 1 Cellulose Fiber: Comply with the following:
Table 1002-1 Cellulose Fiber Properties Property Requirements Fiber Length 6 mm, max. Passing No. 100 (150 µm) Sieve1 60% - 80% Ash Content2 13% - 23% pH3 6.5 – 8.5 Oil Absorption4 4 to 6 times fiber weight Moisture Content5 <5% by weight 1 Sieve Analysis: This test is performed using an Alpine Air Jet Sieve (Type 200 LS). A representative five gram sample of fiber is sieved for 14 minutes at a controlled vacuum of 11 psi. The portion remaining on the screen is weighed. Alternate methods may be allowed if approved by the Materials Engineer Administrator. 2 Ash Content: A representative 2 -3 gram sample of fiber i s placed in a tared crucible and heated between 1100ºF and 1200ºF (595ºC and 650ºC) for not less than two hours. The crucible and ash are cooled in a desiccator and reweighed. 3 pH Test: Five grams of fiber are added to 100 ml of distilled water, stirred and let sit for 30 minutes. The pH is determined with a probe calibrated with pH 7.0 buffer. 4 Oil Absorption Test: Five grams of fiber are accurately weighed and suspended in an excess of mineral spirits for not less than five minutes to ensure to tal saturation. It is then placed in a screen mesh strainer (approximately 0.5-square millimeter hole size) and shaken on a wrist action shaker for ten minutes (approximately 1 -1/4-inch motion at 240 shakes/minute). The shaken mass is then transferred wi thout touching, to a tared container and weighed. Results are reported as the amount (number of times its own weight) the fibers are able to absorb. 5 Moisture content: Ten grams of fiber are weighed and placed in a 250 ºF (121ºC) forced air oven for t wo hours. The sample is then reweighed immediately upon removal from the oven.
1002.02.5 2 Mineral Fiber: When mineral fiber is used, a
cationic sizing will be required. Introduce the cationic sizing at rates recommended by the manufacturer to ensure proper dispersion of the fibers. Comply with the following: Table 1002-2 Mineral Fiber Properties Property Requirements Fiber Length1 6 mm maximum Fiber Thickness2 0.005 mm maximum
1.The Fiber Length is determined according to the Bauer McNett fractionation or alternate approved by the Materials Engineer Administrator.
2.Mean Value of at least 200 fibers in a phase contrast microscope. An alternate method may be allowed if approved by the Materials Engineer Administrator. Table 1002-3 Performance Graded Asphalt Cements Property AASHTO Test Method PG82-22rm1,7 PG76-22m7 PG70-22m7 PG67-22 PG58-28 Spec. Spec. Spec. Spec. Spec. Tests on Original Binder: Rotational Viscosity @ 135°C, Pa·s 2 T 316 3.0 3.0 3.0 3.0 3.0 Dynamic Shear, 10 rad/s, G*/Sin Delta, kPa T 315 1.00+ @ 82°C 1.00+ @ 76°C 1.00+ @ 70°C 1.00+ @ 67°C 1.00+ @ 58°C Dynamic Shear, 10 rad/s, Phase Angle, ° T 315 — 75° @ 76°C — — — Flash Point, °C T 48 232+ 232+ 232+ 232+ 232+ Solubility, % 3 T 44 N/A 99.0+ 99.0+ 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- 1.00- 1.00- 1.00- Dynamic Shear, 10 rad/s, G*/Sin Delta, kPa T 315 2.20+ @ 82°C — — 2.20+ @ 67°C 2.20+ @ 58°C Elastic Recovery, 25°C, 10 cm elongation, %5 T 301 60+ — — — — 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 curve6 Meets curve6 — — Ductility, 25°C, 5 cm/min, cm T 51 — — — 90+ — Tests on Pressure Aging Vessel Residue: R 28 Dynamic Shear, @ 26.5°C, 10 rad/s, G* Sin Delta, kPa T 315 5000- 6000- 6000- 5000- 5000- @ 19°C Bending Beam Creep Stiffness, S, MPa @ - 12°C. T 313 300- 300- 300- 300- 300- @ -18°C Bending Beam Creep Slope, m value,@ -12°C T 313 0.300+ 0.300+ 0.300+ 0.300+ 0.300+ @ -18°C 1Tank mixers are required. Submit written documentation of tank cleaning annually to the Materials Laboratory. Submit written certificates of analysis from the asphalt binder supplier confirming rubber source and size distribution of rubber used. Furnish to the Materials Laboratory. 2The rotational viscosity will be measured to determine product uniformity. The rotational viscosity measured by the supplier shall be note d 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. Not required when crumb rubber is used. Separation may be waived for plant blending with the approval of the Materials Engineer. 5AASHTO T 301 except elongation shall be 10 cm. 6As defined in AASHTO M 332 7 Use a maximum 10 % crumb rubber. Table 1002-4 Emulsified Polymerized Asphalt1 Property AASHTO Test Method Percent of Contract Unit Price CRS-2P CSS-1hP Polymer Emulsion Tack (PET) Specs Deviations Specs Deviations Specs Deviations 100 80 50 or Remove2 100 80 50 or Remove2 100 50 or Remove and Replace2 Viscosity, Saybolt Furol @ 50°C, s T 59 100 – 400 — — — — — — — Viscosity, Saybolt Furol @ 25°C, s T 59 — — — 20 – 100 — — 20 – 100 — Storage Stability,24Hr.,% T 59 1.0- — — 1.0- — — — — Settlement, 5-day, % T 59 5.0- — — — — — — — Identification Test T 59 Pass — Fail — — — — — Particle Charge T 59 Pos. — Neg. Pos. — Neg. — — Residue by Distillation, % by wt. 3 T 59 65+ 61-64 60- 62+ 57-61 56- 63+ 62- Oil Distillate by Volume, % T 59 3.0- — — — — — — — Sieve Test, % (Retained on 850 µm) T 59 0.1- — — 0.1- — — — — Tests on Residue by Distillation: Penetration, 25°C, 100 g, 5 s, dmm T 49 100 – 80–99 201–225 79- 226+ 40 – 30–39 91–100 29- 101+ 60 – 59- 151+ Softening Point (Ring & Ball), °C T 53 38.0 32.1-37.9 32.0 57+ 51.1- 56.9 51- — — Solubility, % T 44 97.5+ — — 97.5+ — — 97.5+ — Ductility, 25°C 5 cm/min, cm T 51 — — — 70+ 56–69 55- — — Tests on Residue by Evaporation4: Force Ductility Ratio, (f2/f1, 4°C, 5 cm/min, f2 at Second peak) T 300 0.30+ 0.21-0.29 0.20- — — — — — Elastic Recovery, 10°C @ 20 cm elongation, % T 301 58+ 51–57 50- — — — 58+ 1 The Department does not allow the addition of latex, rubber or other additives to emulsified polymerized asphalt. 2 At the Chief Engineer’s option. 3 For CSS-1hP, hold the temperature for the Distillation test below 280°F (138°C). Higher temperatures may cause the polymers to break down. 4 Obtain residue asphalt for force ductility and elastic recovery by evaporation (Oven) rather than distillation (Aluminum- alloy Still). Table 1002-5 Non-Tracking Tack Coats – Cold Applied Property AASHTO Test Method NTSS-1HM CBC-1H 100% Pay 50% Pay or Remove and Replace1 100% Pay 50% Pay or Remove and Replace1 Viscosity, Saybolt Furol @ 25°C, s T 59 15 - 100 — 15 - 100 — Storage Stability, 24 Hour, % T 59 1.0- — 1.0- — Settlement, 5 Days, % T 59 5.0- — — — Residue by Distillation3, % T 59 50+ 49- 58+ 57- Oil Distillate, % T 59 1.0- — — — Sieve Test, (Retained on the 850 μm), %2 T 59 0.3- — 0.1- — Tests on Residue Penetration @ 25°C, 100g, 5s, dmm T 49 20- — 40 - 90 39- 91+ Softening Point, Ring and Ball, °C T 53 65+ 64- 49+ 48- Solubility, % T 44 97.5+ — — — DSR @ 82°C; G*/Sin δ, 10 rad / s, kPa T 315 1.0+ — — — 1 At the Chief Engineer’s option. 2 Sieve tests may be waived if no application problems are present in the field. 3 For CBC-1H only: Exception to T59 Distillation – Bring the temperature on the lower thermometer slowly to 350°F. Maintain at this temperature for 20 minutes. Complete total distillation in 60 +/- 5 minutes from the first application of heat. Table 1002-6 Cationic Emulsified Asphalt (CSS-1h) Property AASHTO Test Method CSS-1h Specifications Deviations 100 80 50 or Remove and Replace1 Viscosity, Saybolt Furol @ 50°C, s T 59 — — — Viscosity, Saybolt Furol @ 25°C, s T 59 20 – 100 — — Residue by Distillation, % by wt. T 59 57+ 52 – 56 51- Oil Distillate by Volume, % T 59 — — — Particle Charge T 59 Pos. — Neg. Sieve Test, % (Retained on 850 µm) T 59 0.1- — — Settlement, 5-day, % T 59 5.0- — — Tests on Residue by Distillation: Penetration, 25°C, 100 g, 5 s, dmm T 49 40 – 90 30 – 39 91 – 100 29- 101+ Solubility, % T 44 97.5+ --- --- Ductility, 25°C 5 cm/min, cm T 51 40+ 26 – 39 25- Viscosity, 135°C, Pa·s T 316 — — — 1 At the Chief Engineer’s option. Table 1002-7 Anionic Emulsified Asphalt (SS-1h) Property AASHTO Test Method SS-1h Specifications Deviations 100 80 50 or Remove and Replace1 Viscosity, Saybolt Furol @ 25°C, s T 59 20 – 100 — — Residue by Distillation, % by wt. T 59 57+ 52 – 56 51- Sieve Test, % (Retained on 850 µm) T 59 0.1- — — Cement Mixing T 59 2- — — Settlement, 5-day, % T 59 5.0- — — Tests on Residue by Distillation: Penetration, 25°C, 100 g, 5 s, dmm T 49 40 – 90 30 – 39 91 – 100 29- 101+ Solubility, % T 44 97.5+ — — Ductility, 25°C, 5 cm/min, cm T 51 40+ 26 – 39 25- 1 At the Chief Engineer’s option. Table 1002-8 MC Cutback Asphalt Property AASHTO Test Method MC-30 MC-70 Specifications Deviations Specifications Deviations 100 80 50 or Remove1 100 80 50 or Remove and Replace1 Flash Point, Open Tag, °C T 79 38+ — — 38+ — — Viscosity, Saybolt Furol @ 25°C, s T 72 75 - 58 – 74 151 - 167 57- 168+ — — — Viscosity, Saybolt Furol @ 60°C, s T 72 — — — 35 – 24 – 34 71 – 80 23- 82+ Distillation Test, Distillate Percentage by Volume of Total Distillate to 360°C T 78 To 225°C 0.0- 25.0 — — 0.0- 20.0 — — To 260°C 40.0- 70.0 — — 20.0- 60.0 — — To 316°C 75.0- 93.0 — — 65.0- 90.0 — — Residue from Distillation to 360°C, Volume % of Sample by Difference T 78 50.0+ 45.1-49.9 45.0- 55.0+ 50.1-54.9 50.0- Tests on Residue by Distillation: Penetration, 25°C, 100 g, 5 s, dmm T 49 120 – 102 - 119 251 - 268 101- 269+ 120 - 102 – 119 251 – 268 101- 269+ Solubility, % T 44 99.0+ 98.6–98.9 98.5- 99.0+ 98.6–98.9 98.5- Ductility, 25°C for Residues To 200 Penetration 5 cm/min, cm T 51 100+ 76 - 99 75- 100+ 76 – 99 75- Ductility, 15.5°C for Residues of 200 – 300 Penetration, 5 cm/min, cm T 51 100+ 76 - 99 75- 100+ 76 - 99 75- 1 At the Chief Engineer’s option. Table 1002-9 Asphalt Emulsion Prime (AEP) Percent of Contract Unit Price Specification Deviations AASHTO Test Method 100 80 50 or Remove and Replace 1 Viscosity, Saybolt Furol @ 50°C, s T 59 15-100 10-15 101-200 9- 201+ Residue by Evaporation, % by wt. T 59 50+ 46-49 45- Oil Distillate by Volume, % T 59 25.0- — — Sieve Test (retained on 850 µm), % T 59 0.1- — — Storage Stability, 24 h, % T 59 1.0- — — Settlement, 5 Days, % T 59 5.0- — — Test on Residue by Evaporation: Penetration, 25°C, 100 g, 5 s, dmm T 49 250+ — — Solubility, % T 44 97.5+ — — 1 At the Chief Engineer’s option. Table 1002-10 Cationic Emulsified Petroleum Resin (EPR-1) Percent of Contract Unit Price Specification Deviations AASHTO Test Method 100 80 50 or Remove and Replace1 Viscosity, Saybolt Furol @ 25°C, s T 59 15- 10-15 101-150 9- 151+ Residue by Evaporation, % by wt. T 59 57+ 52-56 51- Particle Charge T 59 Pos. — Neg. Sieve Test (Retained on 850 µm), % T 59 0.1- — — Settlement, 5 Days, % T 59 5.0- — — 1 At the Chief Engineer’s option. Table 1002-11 Hot Applied Modified Asphalt Cements for Asphalt Surface Treatment (PAC 15) PAC 15 AASHTO Test Method Spec. Deviation Property 90 or Remove and Replace1 Penetration @ 25°C, 100 g., 5 s, dmm T 49 75-125 74- 126+ Viscosity, @ 60°C, Pa·s T 202 150+ 149- Rotational Viscosity @ 135°C, Pa·s2 T 316 3.0- 3.1+ Force Ductility Ratio, f2/f1, 4°C, 5cm/min, f2 @ 30 cm elongation3 T 300 0.30+ 0.29- Softening Point, °C T 53 45+ 44- Flash Point, °C T 48 230+ 228- Separation of Polymer, 163°C, 48 hours difference in R & B from top to bottom sample, °C 4 ASTM D 7173 AASHTO T 53 2- — Tests on Residue from Rolling Thin Film Oven Test: T 240 Elastic Recovery, 25°C, 10 cm elongation, % 5 T 301 55+ 54- Penetration Retention 25°C, RTFO/Original T 49 0.60+ 1.00- 0.59- 1.01+
1.At the Chief Engineer’s option.
2.Measure rotational viscosity to determine product uniformity. The supplier shall note his measured rotational viscosity on the Certificate of Delivery. A binder having a rotational viscosity of 3.0 Pa·s or less will typically have adequate mixing and pum ping capabilities. Use binders with rotational viscosity values higher than 3.0 Pa·s with caution and only after consulting with the supplier as to any special handling procedures and guarantees of mixing and pumping capabilities.
3.AASHTO T 300 except the second peak (f2) shall be defined as the stress at 30 cm elongation.
4.Prepare samples per ASTM D7173. Determine softening point of top and bottom per AASHTO T 53.
5.AASHTO T 301 except the elongation shall be 10 cm. Table 1002-12 Non-Tracking Hot Applied Polymer (NTHAP) Tack Coat TYPICAL PHYSICAL PROPERTIES PARAMETER TEST METHOD MIN MAX Rotational Viscosity @ 149 °C, Pa∙s AASHTO T316 — 3.0* Penetration @ 25 °C , dmm ASTM D5 — 25 Softening Point, °C ASTM D36 70 99 Original DSR @ 82 °C , G*/sin δ, kPa AASHTO T315 1.0 — Creep Stiffness, m-value @ 0 °C on original binder AASHTO T313 0.285 — * Rotational viscosity shall be waived if material can be successfully applied in the field.
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Source: Standard Specifications for Roads and Bridges, 2016 Edition. Pages 996–1008 of 1,145. View official source ↗