410ASPHALT PAVEMENTS

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TABLE IV ACCEPTANCE SCHEDULE OF PAYMENT FOR IN-PLACE DENSITY Characteristic SUBLOT PAY FACTOR Arithmetic Average of the Absolute Values of Deviations of SUBLOT Acceptance Tests From Target** 1 Test 2 Tests 3 Tests 4 Tests In-Place Density 1.02 0.00 - 2.00 0.00 - 1.41 0.00 - 1.15 0.00 - 1.00 1.00 2.01 - 3.33 1.42 - 2.36 1.16 - 1.92 1.01 - 1.67 0.98 3.34 - 3.60 2.37 - 2.55 1.93 - 2.08 1.68 - 1.80 0.95 3.61 - 4.00 2.56 - 2.83 2.09 - 2.31 1.81 - 2.00 0.90 4.01 - 4.67 2.84 - 3.30 2.32 - 2.69 2.01 - 2.33 0.80* Over 4.67 Over 3.30 Over 2.69 Over 2.33 SECTION 327 BITUMINOUS BLACK BASE MIXES and 424 MIXES (SUPERPAVE) Characteristic SUBLOT PAY FACTOR Arithmetic Average of the Absolute Values of Deviations of SUBLOT Acceptance Tests From Target** 1 Test 2 Tests 3 Tests 4 Tests In-Place Density 1.02 0.0-2.25 0.0-1.59 0.0-1.30 0.0-1.12 1.00 2.26-3.75 1.60-2.65 1.31-2.17 1.13-1.88 0.98 3.76-4.05 2.66-2.86 2.18-2.34 1.89-2.02 0.95 4.06-4.50 2.87-3.18 2.35-2.60 2.03-2.25 0.90 4.51-5.25 3.19-3.71 2.61-3.03 2.26-2.62 0.80* Over 5.25 over 3.71 over 3.03 Over 2.62 * If approved by the Department, the Contractor may accept the indicated partial SUBLOT pay. The Department may require removal and replacement. The Contractor has the option to remove at no cost to the Department and replace at contract unit bid price rathe r than accepting the reduced SUBLOT payment. ** Target density shall be 94.0 % of the theoretical maximum density for all mixes except for: - the range of placement rates given in Item 306.03(g)3 (140 pounds per square yard or greater and less than 200 pounds per square yard over surface treatments) the target density shall be 92.0 %. The Contractor may request in writing that the target density remain 94% of the theoretical maximum density in these instances. Regardless of the target density, pay factors will be applied. - ESAL Range A and B mixes where the Contractor demonstrates and explains in writing why 94 % of the theoretical maximum density cannot be achieved and the Engineer informs the Contractor by written notification that the target density can be reduced to 93 % or 92 %. Regardless of the target density, pay factors will be applied.

TABLE V COMPARISON OF ALDOT AND CONTRACTOR TESTING TEST ACCEPTABLE ASPHALT CONTENT ± 0.30 % AIR VOIDS ± 0.50 % GRADATION * See Table VI * Gradations given in Articles 327.02 and 420.02.

Tack coat liquid asphalt material will be measured and paid for as specified in Section 405.

Deductions in measurement will be made for all material wasted or lost due to negligence of the Contractor or applied beyond the limits of the work.

The number of material remixing devices measured for payment will be the number of units approved by the Engineer for use. These devices will be measured per each device. POLYMER MODIFIED OPEN GRADED FRICTION COURSE 227

The number of certified inertial profilers measured for payment will be the actual number of units ordered and accepted.

410.09Basis of Payment

Compensation for plant mix material, measured as provided above, will be made on a tonnage basis and the contract unit price per ton for each individual item shall be full compensation for construction of the hot and warm mix asphalt plant mix layer complete in place on the roadbed as specified or directed, including all materials, procurement, handling, hauling, and processing cost, and includes all equipment, tools, labor, and incidentals required to complete the work. Unless otherwise covered by a separate pay item, the cost of excavation for patching and widening, compacting the subgrade, backfilling, spreading, or disposing of excess excavated material, removal and disposal of old pavement, and removal and disposal of pavement markers shall be subsidiary obligations of the associated plant mix pay item, and no additional payment will be made for performing the work. No payment will be made for unacceptable material; for material needed to overlay layers deficient in thickness; for material used in replacing defective or condemned construction; for material wasted in handling, hauling, or otherwise; or for maintaining the work. When the average rate of placement is found to exceed the tolerance given in Item 410.03(f)1., the tonnage placed above the specified rate in that unit will be paid for at 50 percent of the contract unit price. This reduction will not be applied to patching, leveling, and widening. Smoothness testing, measured with a certified inertial profiler as noted above, will be paid for at the contract unit bid price which shall be full compensation for furnishing the inertial profiler and portable storage device(s) and includes all equipment, tools, labor, calibration, maintenance, services, supplies, and incidentals necessary to complete these items of work. The number of approved remixing devices, measured as noted above, will be paid for at the contract unit bid price. This price shall be full compensation for furnishing the vehicles and shall include all equipment, tools, labor, calibration, maintenance, services, operator, and all other items necessary to furnish and operate the vehicles.

See Appropriate Section for Type of Plant Mix Involved. 410-H Material Remixing Device - per Each 410-I Smoothness Testing - Certified Inertial Profiler-per Each POLYMER MODIFIED OPEN GRADED FRICTION COURSE

420.01Description

The work covered by this Section shall consist of constructing a hot mixed, hot laid polymer modified open graded friction course wearing layer generally placed on an existing pavement. The typical cross section and the average weight per square yard will be shown on the plans. Requirements for all hot mix asphalt pavements as specified in Section 410 are applicable to this Section, subject to any exceptions contained herein. Quality Control/Quality Assurance (QC/QA) requirements as specified in Section 106 are applicable to this Section, subject to any exceptions contained herein.

420.02Materials

The materials furnished for use shall comply with the requirements of Section 410 and the following:

The aggregate shall be limited to 100% crushed aggregates of the following: granite, quarried quartzite, slag, sandstone or manufactured lightweight aggregate, all of which shall be from approved sources and meet the appropriate requirements of Sections 801 and 802. However, if additional dust (- 200 {- 75 m} material) is needed, mineral filler (meeting the requirements of Section 805) or agricultural limestone may be used. If agricultural limestone is used, it shall meet the requirements of ASTM C 602, Standard Specification for Agricultural Liming Materials, for Class E agricultural limestone, POLYMER MODIFIED OPEN GRADED FRICTION COURSE 228

so that a minimum of 80.0 % of the material will pass the No. 8 {2.35 mm} sieve and 25.0 % will pass the No. 60 {0.250 mm} sieve. In addition, a minimum of 5.0 % will pass the No. 200 {75 m} sieve. No more than 10.0 % agricultural limestone shall be used. The aggregate shall be combined into a total blend that will produce an acceptable job mix within the gradation limits shown in the following table. The blend shall be made from at least two stockpiles of different gradations. At least 10% of the blend shall be taken from each stockpile. AGGREGATE GRADATION FOR OPEN GRADED FRICTION COURSE Sieve (Square Mesh Type) Percent Passing By Weight {Mass} 3/4 inch {19.0 mm} 100 1/2 inch {12.5 mm} 85 - 100 3/8 inch {9.5 mm} 55 – 65 No. 4 {4.75 mm} 10 - 25 No. 8 {2.36 mm} 5 - 10 No. 200 {75 m} 2 - 4 As stated in Article 410.02 no RAP or RAS is Allowed.

The liquid binder shall be a polymer modified PG 76-22 meeting the requirements of Section 804. The proportion of liquid asphalt binder to total sample by weight {mass} shall be 6.0 % to 9.0 %. The exact proportion shall be fixed by the job mix formula. Additives or modifiers shall be used to prevent stripping of liquid asphalt binder. These additives or modifiers shall be furnished and used at no additional cost to the State.

The polymer additive shall meet the requirements of Section 811.

A fiber stabilizer or Evotherm 3G meeting the requirements given in Section 410 shall be incorporated into the mix to produce a maximum liquid asphalt binder cement draindown of 0.30 % or less when tested at 325°F {163°C} and 350°F {176°C} in accordance with AASHTO T305. The fiber shall be blended into the mix in accordance with the requirements given in Section 410.

Tack coat materials shall either be a CQS-1hp asphalt emulsion used in conjunction with the spray paver equipment as required in Subarticle 420.04 (d) or “PG Asphalt for Trackless Tack” including DOTC- 10, eTac HB, or Ultrafuse with conventional paving equipment. All tack coat materials shall meet the requirements given in Section 804 except as modified by the requirements given herein. The CQS-1hp shall be smooth and homogeneous and shall meet the requirements shown in the following table: