402Asphalt Materials and Mineral Admixtures

402.1 Description

This Work consists of providi ng, mixing, and applying asphalt Materials and mineral admixtures (hydrated lime, anhydrite based Material, Portand ce ment or lubricating antistrip additive).

402.2 Materials

402.2.1 Asphalt Binder

Asphalt binders are uncracked pe troleum asphalts. The Supplie r shall prepare asphalt binders by refining petroleum at a maximum temperature of 700 ° F. The Supplier shall not use Materials that are prone to cracking. The asphalt binder w ill be: 1. Free of thermal decomposition products; 2. Free of residue from non-asphalt sources; 3. Homogeneous and free from water; 4. Non-foaming when heated to 350 °F; and 5. Conforming to the requirements of performance-graded asphalt binder.

402.2.1 1 Performance-Graded Asphalt Binder (PGAB)

The Supplier shall provide performance-graded asphalt binder i n accordance with AASHTO M 320. The Contractor may substitute a performance-grad ed asphalt binder with a high-end or low-end temperature grade in excess of that shown i n the Plans, at no additional cost to the Department.

402.2.1 2 Polymer-Modified Asphalt Binder

The Contractor shall provide a Polymer-Modified Asphalt Binder that meets the requirements for a PG 76-22+, PG 76-28+, PG 70-22+, PG 70-28+, PG 76-28R+ and PG 70- 28R+ per AASHTO M 320 in addition to the requirements in Table 402.2.1.2:1, “Polymer- Modified Asphalt Binders.” Table 402.2.1.2:1 Polymer-Modified Asphalt Binders Properties Requirements PG 76-22+, PG 76-28+, PG 70-22+ PG 70-28+ PG 76-28R+ PG 70-28R+ Terminal-Blended Tire Rubber Content, % minimum ------ 5.0 Section 402: Asphalt Materials and Mineral Admixtures Page 154 Table 402.2.1.2:1 Polymer-Modified Asphalt Binders Styrene-Butadiene-Styrene (SBS) Polymer Content by Weight of Total Formulation, % minimum ------ 2.0 Solubility in Trichloroethylene, % minimum (Note 1), ASTM D 2042 97.5 97.5 Elastic Recovery @ 77oF, % minimum, AASHTO T 301 65 65 Note 1 : If the solubility of the binder is less than 97.5 percent, t est the base asphalt binder. The solubility of the base as phalt binder shall be greater than 99 percent.

402.2.1 3 Tire Rubber Modifier (TRM)

Tire rubber modifier (TRM) shall be produced from the recyclin g of automobile and/or truck tires. The specific gravity of the TRM shall be 1.15 +/- 0.05. The fiber content shall be less than 0.5% by weight for all other applications. The TRM s hall contain no metal particles. Mineral contaminates shall be less than 0.25% by weight.

402.2.1 3.1 Asphalt Rubber Binder Formulation Design

The asphalt rubber binder shall contain a minimum of five perce n t ( 5 % ) T R M . T h e terminal-blended asphalt rubber binder shall conform to the req uirements of AASHTO M320, as well as the requirements in Table 402.2.1.2:1, “Polymer-Modi fied Asphalt Binders.” The Asphalt Rubber Binder Supplier shall perform the design for the asphalt rubber binder formulation. Testing shall be the responsibility of the Contra ctor, at no additional cost to the Department. The Contractor shall provide the State Materials Bureau with a copy of the terminal- blended asphalt rubber binder formul ation design at the time of mix design submittal. The design shall include: 1. Source; 2. Grade; 3. Type; 4. Proportion expressed as a percentage of total weight of the formulation for each component material; 5. Physical properties of the asphalt rubber binder in accordan ce with Table

402.2.1 2:1, “Polymer-Modified Asphalt Binders;” and

6. Recommended mixing and compaction temperatures for intended use.

402.2.1 4 Shipping

The Contractor shall: 1. Ship asphalt Material in seal ed, insulated tank vehicles wit h convenient access to the Material so that it may be sampled; Section 402: Asphalt Materials and Mineral Admixtures Page 155 2. Keep the shipping tanks free of foreign matter. The Departm ent will reject contaminated asphalt Material; 3. Ship the performance-graded binder as shown in the requirements of Department’s Standard Practice for Certifying Suppliers of Performance-Graded Asphalt Binders and in accordance with Section 402.2.1.1, “Performance-Graded A sphalt Binder (PGAB).”

402.2.1 5 Sampling and Testing

402.2.1 5.1 Sampling of Asphalt Binder

The Contractor shall perform all Quality Assurance sampling usi ng AASHTO T 40, Standard Method of Test for Sampling Bituminous Materials under the direct supervision of TTCP certified sampling personnel, and witnessed by the Project Manager or his designee. The samples will be taken either from the discharge side of the storage tank or from the delivery trucks. The samples will be taken after a sufficient amount, a minimum of one (1) gallon, of PGAB is run out to clear any residual PGAB or other asphalt Material and/or solvent that may have built up in the sampling valve. All approved sam ple containers shall be identified using Department Form A-1231. The minimum sampling frequency for asphalt cement shall be one (1) sample during the test strip operation and every 5000 tons of HMA or WMA thereaft er. One (1) sample of asphalt cement shall be taken repr esenting OGFC, WOGFC, or ROGF C operations. A minimum of two (2) samples shal l be taken per Project represent ing asphalt binder from HMA or WMA, and a minimum of one (1) sample representing asphalt bi nder for OGFC, WOGFC, or ROGFC. A sample shall consist of (3) separate one (1)-quart sub-samples. All samples shall be maintained in a secure, dry location at the Project of fice or at a pre-agreed upon location that is satisfactory to the Contractor and Project Man ager.

402.2.1 5.2 Testing of Asphalt Cement

The Contractor shall sample and test performance-graded asphalt binders in accordance with the Department’s Standard Practice for Certifying Suppliers of Performance-Graded Asphalt Binders and in accordance with Section 402.2.1.1, “Performance-Graded Asphalt Binder (PGAB).” The Department will assume no obligation to Ac cept the CTR’s and may additionally test the certified Materials. The Department may test asphalt Materials at the manufacture shipping or P roject storage location. One (1) sub-sample shall be tested by NMDOT Chemistry Unit when t h e t e s t s t r i p i s performed. Another randomly selected sub-sample shall be teste d by the NMDOT Chemistry Unit during the course of the Project. If the results of any of the sub-samples designate failing mate rial, the second sub-sample shall be submitted to and tested by the NMDOT Chemistry Unit. If the second sub-sample does not meet Specifications in accordance with AASHTO M 320, T able 402.2.1.6:1, “Pay Adjustment Factor Based on PGAB Test Results” will be implement ed by the Project Manager. The Pay Adjustment Factor will represent the total asphalt bind er used for 5000 Tons of HMA or the tonnage of HMA used for the test strip. If there are mu ltiple failures for each binder test on the same sample, the Projec t Manager will base the adjustmen t on the lowest pay factor of all the tests. The Price Adjustment will be executed with a Ch ange Order (Field Sheet).

402.2.1 5.3 Appeal Procedure (Asphalt Binders – Only)

Section 402: Asphalt Materials and Mineral Admixtures Page 156 If desired, the Supplier at no expense to the Department may s ubmit the third sub-sample (referee) to a mutually agreed upon Independent Laboratory. Th e Independent Laboratory shall be currently accredited to perform such testing by the AA SHTO Accreditation Program (AAP). If the Supplier desires to appeal the price adjustment for a p articular PGAB grade production lot (5000 Tons of HMA or WMA), the Supplier shall su bmit a written request to the Project Manager, with a copy to the QC Engineer, within ten (10 ) Calendar Days of the reported test results. The request must describe in full the g rounds of circumstances for the appeal. The appeal request will be reviewed by the Project Man ager and Assistant District Engineer - Construction and either Accepted or denied. If the appeal is denied, a letter from the Project Manager stating t he grounds for denial will be sent to the Contractor and the price adjustment will be executed with a Change Order (Field Sheet). 402.2.1.6 Acceptance The Department will Accept asphalt cement in accordance with t he Department’s Standard Practice for Certifying Supp liers of Performance-Graded Binders and in accordance with Section 402.2.1.1, “Perfor mance-Graded Asphalt Binder (PGA B).” TABLE 402.2.1.6:1 Pay Adjustment Factor Based on Binder Test Results Binder Property Measured Value Pay Factor Applied DSR on Original Binder G*/sin (kPa) Min. 1.00 kPa <1.00 – 0.98 0.98 <0.98 – 0.96 0.95 <0.96 – 0.94 0.92 <0.94 – 0.90 0.85 <0.90 0.75 or Removal2 DSR on RTFO Aged Material G*/sin (kPa) Min. 2.20 kPa <2.20 – 2.15 0.98 <2.15 – 2.09 0.95 <2.09 – 2.02 0.92 <2.02 – 2.00 0.85 <2.00 0.75 or Removal2 DSR on PAV Aged Material G*sin (kPa) Max. 5000 kPa >5000 – 5100 0.98 >5100 – 5250 0.95 >5250 – 5400 0.92 >5400 – 5600 0.85 >5600 0.75 or Removal2 BBR Slope value (m) of PAV Aged Binder Min. 0.300 <0.300 – 0.298 0.98 <0.298 – 0.293 0.95 <0.293 – 0.290 0.92 <0.290 – 0.285 0.85 <0.285 0.75 or Removal2 BBR Stiffness of PAV Aged Binder S (MPa) >300 – 306 0.98 >306 – 315 0.95 Section 402: Asphalt Materials and Mineral Admixtures Page 157 TABLE 402.2.1.6:1 Pay Adjustment Factor1 Based on Binder Test Results Binder Property Measured Value Pay Factor Applied Max. 300 MPa >315 – 324 0.92 >324 – 330 0.85 >330 0.75 or Removal2 % Elastic Recovery on RTFO Aged Material3 Min 65% <65 – 60 0.95 <60 0.75 or Removal2 1Price Reduction will be applied to Contactor’s invoice price of asphalt binder. 2The Assistant District Engineer - Construction will determine i f the non-compliant HMA Material will be removed. Removal and replacement will be at n o additional cost to the department. If the non-compliant M aterial is Accepted, a price reduction factor of 0.75 will apply. 3Elastic-Recovery is only applic able to PG+ and PGR+ Binders.

402.2.2 Emulsified Asphalt

Emulsified asphalt consists of uncracked petroleum asphalt uni formly emulsified with water and an emulsifying or stabilizing agent. The Contractor shall ensure that emulsified asphalt is homogenous after mixing. The Supplier shall provide anionic emulsified asphalt in accordance with AASHTO M 140 and cationic emulsified asphalt in accordance with AASHTO M 208.

402.2.2 1 High-Float Emulsions

The Supplier shall provide high -float emulsions (HFE-60, HFE-9 0, HFE-150, and HFE-300) in accordance with Table 402.2.2.1:1, “High-Float Emul sions Requirements.” Table 402.2.2.1:1 High-Float Emulsions Requirements Test HFE- 60 HFE-90 HFE-150 HFE-300 Viscosity, Saybolt Furol at 122 ° F, Seconds 50+ 50+ 50+ 50+ Sieve Test, Retained on No. 20 Siev e, % 0.10- 0.10- 0.10- 0.10- Settlement, 5 Days, % 5- 5- 5- 5- Storage Stability Test, 1 Day, % 1- 1- 1- 1- Demulsibility, 1.2 fl oz 0.10 N, CaCl, % 30+ 30+ — — Residue from Distillation Tes t to 500 °F 65+ 65+ 65+ 65+ Oil Distillate by Volume of Emulsion, % 1- 3- 7- 7- Coating Test, 3 minutes Gra des, stones coated thoroughly Tests on Residue from Distillation Test Penetration at 77 °F, 3.5 oz., 5 sec, 0.1 mm 60–90 90–150 150–3 00 300+ Float Test at 140 °F, Seconds 1,200+ 1,200+ 1,200+ 1,200+

402.2.2 2 Polymer-Modified High-Float Emulsions

This Material is a high-float e mulsion containing polymer-modi fied asphalt and water in accordance with the requirements of Table 402.2.2.2:1, “Polymer -Modified High-Float Emulsions Requirements.” Table 402.2.2.2:1 Polymer-Modified High-Float Emulsions Requirements Test HFE- 60P HFE- 100P HFE- 150P HFE- 300P Viscosity, Saybolt Furol at 122 °F, Seconds 50+ 50+ 50+ 50+ Sieve Test, Retained on No. 20 Siev e, % 0.10- 0.10- 0.10- 0.10- Storage Stability Test, 1 Day, % 1- 1- 1- 1- Demulsibility, 1.2 fl oz 0.10 N, CaCl, % 30+ 30+ — — Residue from Distillation Tes t to 400 °F 65+ 65+ 65+ 65+ Oil Distillate by Volume of Emulsion, % 1- 3- 7- 7- Tests on Residue from Distillation Test Penetration at 77 °F, 3.5 oz., 5 s, 0.1 mm 60–90 90–150 150–300 300+ Ductility 77 °F, 2 inch/min 40+ 40+ 40+ — Elastic Recovery, % 55+ a 58+a 25+b 25+b Float Test @ 140 °F, Seconds 1,200+ 1,200+ 1,200+ 1,200+ aTest in accordance with AASHTO T 301 at a test temperature of 5 0 °F. bTest in accordance with AASHTO T 301 at a test temperature of 3 9.2 °F.

402.2.2 3 Polymer-Modified High-Float Emulsion, Rapid Set

The Supplier shall provide a hi gh-float rapid-set, polymerized emulsion (HFRS-2P) that contains polymer-modified asphal t, water, and an emulsifier. T he Supplier shall provide high- float rapid-set, polymerized emulsion (HFRS-2P) in accordance w ith Table 402.2.2.3:1, “Rapid-Set Polymer-Modified High-F loat Emulsion Requirements.” Table 402.2.2.3:1 Rapid-Set Polymer-Modified High-Float Emulsion Requirements Test HFRS-2P Viscosity, Saybolt Furol at 122 °F, Seconds 100–400 Sieve Test, Retained on No. 20 Sieve, % 0.10 Demulsibility, 1.2 fl oz 0.02 N, CaCl, % 40+ Residue from Distillation Test to 450 °F 65+ Oil Distillate by Volu me of Emulsion, % 3.0- Tests on Residue from Distillation Penetration at 77 °F, 3.5 oz., 5 s, 0.1 mm 90–150 Ductility 39.2 F, 2 inch/min 20+ Elastic Recovery, % a 58+ Float Test at 140 °F, Seconds 1,200+ aTest in accordance with AASHTO T 301 at a test temperature of 5 0 °F.

402.2.2 4 Asphalt-Emulsified Prime (AE-P)

The Supplier shall provide AE- P designated asphalt-emulsified prime in accordance with Table 402.2.2.4:1,"Asphalt Emulsified Prime.” Table 402.2.2.4:1 Asphalt Emulsified Prime Test AE-P Viscosity Saybolt Furol at 122 °F, Seconds 15–150 Settlement 24 h, % 1- Residue from Distillation Test, % 65+ Oil Distillate by volume of Emulsion, % 25- Tests on Residue from Distillation Solubility in Trichloroethylene, % 97.5+

402.2.2 5 Penetrating Emulsified Prime (PE-P)

The Supplier shall provide PE-P designated penetrating emulsif ied prime in accordance with Table 402.2.2.5:1, “Penetrating Emulsified Prime.” Table 402.2.2.5:1 Penetrating Emulsified Prime Test PE-P Viscosity, Saybolt Furol at 122 °F, Seconds 75- Sieve Test, Retained on 0.35 in Sieve, % 0.1- Residue from Distillation Test, % 38+ Oil Distillate by volume of Emulsion, % 0–4

402.2.2 6 Emulsified Petroleum Resin Prime (EPR-1)

The Supplier shall provide EPR-1 designated emulsified petrole u m r e s i n p r i m e i n accordance with Table 402.2.2.6:1 , “Emulsified Petroleum Resin Prime.” Table 402.2.2.6:1 Emulsified Petroleum Resin Prime Test EPR-1 Particle Charge Test Positive Residue from Evaporation Test, %a 60+ Sieve Test, Retained on 0.850mm Sieve, %b 0 . 1 - Viscosity, Saybolt Furol at 77 °F, Seconds 14–60 aASTM D-244 Evaporation Test for percent of residue is modified by heating 50 gram sample to 300°F until foami ng ceases, then cool immediatel y and calculate results. bTest procedure with ASTM except that distilled water shall be u sed in place of two percent (2%) sodium oleate solution.

402.2.2 7 Cutback Asphalts (Medium-Curing Type)

The Contractor shall provide cutback asphalt in accordance wit h AASHTO M 82. The Contractor shall not use MC-30.

402.2.3 Mineral Admixtures

402.2.3 1 Hydrated Lime

The Supplier shall provide hydrated lime in accordance with AS TM C 1097, with the following exception: 1. Delete ASTM C 1097, section 4.1, and 2. Substitute the following: “Hydrated lime, dry or slurry, wi ll have a maximum of three percent (3%) retained on a No. 30 sieve and a maximum of 25% re tained on a No. 200 sieve.” The Supplier shall determine the fineness of hydrated lime in accordance with AASHTO T 219. The Contractor shall use a ¼-pound sample to per form tests in accordance with AASHTO T 219 sections 6.1 and 6.1.1. 402.2.3.2 Anhydrite Based Material The Supplier shall provide anhydrite based Materi al in accordance with Tables

402.2.3 2:1, “Anhydrite Based Material Chemical Composition” an d Table 402.2.3.2:2,

“Anhydrite Based Material Physical Properties.” The Contractor shall use ASTM C 114 for the chemical analysis. Table 402.2.3.2:1 Anhydrite Based Material Chemical Composition Chemical Compound Percent by Weight SiO 2 6.7 to 10.7 Al2O3 1.0 to 3.0 Fe2O3 1.0 to 1.4 MgO 0.2 to 1.2 CaO 44.5 to 54.5 SO 3 32.3 to 42.3 Table 402.2.3.2:2 Anhydrite Based Material Physical Properties Property Range LOI, % 0.37 to 1.37 Passing #200 Sieve, % 98.8 to 100.0 Passing #325 Sieve, % 98.0 to 100.0 Specific Gravity 2.970 to 3.030

402.2.3 3 Portland Cement

The Contractor shall provide Type I, Type II, or Type I/II Port land Cement in accordance with ASTM C 150.

402.2.3 4 Lubricating Antistrip Additive

Lubricating Antistrip Additi ve shall be tested and approved by the State Materials Bureau and be on the NMDOT’s Approved Product List (APL). The State M aterials Bureau will provide Hamburg Wheel Tracking Device and Tensile Strength (AAS HTO T-283) testing in order to verify the additive will meet the requirements of an a ntistrip agent.

402.3 Construction Requirements

Section 402: Asphalt Materials and Mineral Admixtures Page 161 The Contractor shall submit the Material Supplier’s name and a ddress to the Project Manager. If required by the Project Manager, the Contractor sh all submit representative samples of each grade or classification of asphalt Materials fo r testing. The Contractor shall mix and apply asphalt Materials within the approved temperature range. The Contractor shall not make changes in the crude stock sourc e, manufacture method, or the Supplier without written approval from the Project Manag er.

402.4 Method of Measurement

If asphalt Materials are not stored in tanks for exclusive use on the Project, the Department will determine the Acceptable quantity of Virgin Asphalt Material , per lot, based on the following equation: XTQ ( 1 ) Where, Q is the quantity of Virgin Asphalt Material (in tons) T is the quantity of placed and Accepted asphalt pavement (in t ons) X is the average percent virgin asphalt content in the asphalt pavement (per lot) If mineral admixtures are not stored in silos for exclusive us e on the Project, the Department will determine the Acceptable quantity of mineral ad mixture, per lot, based on the following equation: XMA T MA ( 1 ) Where, MA is the quantity of mineral admixture (in tons) T is the quantity of placed and Accepted asphalt pavement (in to ns) XMA is the average percent mineral admixture content in the asphal t pavement (per lot)

402.5 Basis of Payment

Pay Item Pay Unit Virgin Asphalt Material T o n Hydrated Lime Ton Anhydrite Based Material Ton Portland Cement Ton

402.5.1 Work Included in Payment

The Department will consider as included in the payment for th e pay item(s) listed in this section and will not measure or pay separately for the followin g Work: 1. Providing and mixing asphalt Ma terials and mineral admixture s (Hydrated lime, anhydrite based Material, Portlan d cement, or lubricating antis trip additive); 2. Shipping/Delivery to Project site; Section 402: Asphalt Materials and Mineral Admixtures Page 162 3. Sampling and Testing; 4. Water; and Application of Asphalt Material onto roadbed. Section 403: Open Graded Friction Course Page 163