SECTION 417: MISCELLANEOUS PAVING
417.1 Description
This Work consists of construc ting one (1) or more courses of asphalt paving on a prepared surface. Examples of miscellaneous paving include the following: 1. Ditch paving; 2. Median paving; 3. Slope paving; 4. Guardrail pads, bicycle/pedestrian paths and trails; 5. Asphalt curbs; or 6. As designated in the Plans.
417.2 Materials
The asphalt paving consists of coarse and fine aggregates, asp halt binder, mineral filler, and hydrated lime or anhydrate based Material.
417.2.1 Aggregate
The Contractor shall use aggregate that meets the requirements in Table 417.2.1:1, “Aggregate Gradation Requirements.” Table 417.2.1:1 Aggregate Gradation Requirements Sieve size % passing 3/4 inch 100 No. 4 40 – 70 No. 200 < 10 Coarse aggregate shall have an AI of 30 or less in accordance with Section 910, “Aggregate Index.” The combined aggregate shall have a minimum sand equivalent of 45.
417.2.2 Asphalt Material
The Contractor shall use the type and grade of asphalt Material specified in the Contrac t. If no grade is specified, the Contractor shall use any performa nce-graded asphalt binder in accordance with Section 402, “As phalt Materials and Mineral Adm ixtures.” The Contractor shall use asphalt mixture with sufficient aspha lt binder to produce a design air voids of four percen t (4%) or less, except for ditch paving, which shall have a design air voids of three percent (3%) or less. The Contractor shall use the superpave gyratory compactor at N (design) of 75 gyrations to determine the percen tage. The Contractor shall use asphalt Material content that meets requirements for workab ility and desired surface texture.
417.2.3 Reclaimed Asphalt Pavement (RAP )
The Contractor may use RAP miscellaneous paving in any amount up to 35% of the total weight of the mix, providing t he other provisions of this speci fication are met.
417.2.4 Job Mix Formula
The Contractor shall submit a JMF proposal to the Project Mana ger for approval at least 14 Days before paving. The JMF shall include the following: 1. Stockpile combination percentages and resulting gradation; 2. Source, grade, and percentage of asphalt binder; and 3. Any other information that will assist the Project Manager i n evaluating the appropriateness of the mix design. The Contractor shall not begin miscellaneous paving until the Project Manager has approved the JMF. The Contractor may substitute any approved mix design that com plies with the requirements of Section 423, “HOT MIX ASPHALT (HMA) MAJOR PAIVI NG,” Section 424, “WARM MIX ASPHALT (WMA),” or Section 416, “MINOR PAVING” instea d of the requirements of this section. The Contractor shall submit proposed changes to the approved J MF to the Project Manager for approval before placement.
417.3 Construction Requirements
417.3.1 Mixing Plants
The Contractor shall prepare HMA or WMA for miscellaneous pavi ng in an asphalt plant of typical configuration and in good repair. The Contractor ma y use drum or batch mixing plants in accordance with Section 423.3.4, “Equipment.” No ref eree testing will be required for Miscellaneous Paving. Referee testing may be used if both part ies agree in writing prior to commencing placement operatio ns for Miscellaneous Paving.
417.3.2 Haul Equipment
The Contractor shall use haul Equipment in accordance with Sec tion 423.3.4.2, “Haul Equipment.”
417.3.3 Placement Operations
Unless otherwise specified in t he Contract, the Contractor sha ll: 1. Prepare the surface by compac ting the top six (6) inches of soil to 95% of maximum density in accordance with AASHTO T 180 (Modified Proctor), Met hod D (TTTCP Modified); 2. Place asphalt mixtures in accordance with the Plans, or as d irected by the Project Manager. The surface of the placed mix shall be smooth and uni form in texture; 3. The Contractor shall compact with a mechanical roller of sui table type and size to obtain the density and surface te xture specified in the Plans; 4. Cross-roll ditch paving with a pneumatic roller or by other approved means to produce a corrugated texture; and 5. Roll and consolidate Median and slope paving, and guardrail pads to a uniform texture.
417.3.4 Temperature and Weather Limitations
The Contractor shall perform miscellaneous paving in accordanc e with Section 423.3.5.1, “Temperature and Weather Limitations.”
417.3.5 Acceptance
The Contractor shall correct or remove Material that the Proje ct Manager determines is improperly coated or segregated or that otherwise fails to meet the requirements of this Specification. The Department will base Acceptance of miscellaneous paving on visual examination, verification of line and grade, and by density testing (if requ ired). The Department will require density testing on bicycle/pedestrian paths and trails. When densities are required the Contractor shall make three (3 ) passes in the first 100 feet of paving with compaction equipment to be used in producti on and three (3) densities will be taken. The three (3) densities will be averaged and used fo r the maximum density for the Project. Placement of the HMA/WMA shall meet the proper compac tion temperature and thickness (as shown on the Plans). Acceptance lots for density will be a maximum of 500 yd 2. The Contractor shall take three (3) nuclear density reading s at random locations within t he Acceptance lot and use the average of the three (3) tests for pay factor determination. T he Department will determine the pay factor for each lot in accordance with Table 417.3.5:1, “Pr ice Adjustments for Density.” The Project Manager may reject Material that appears to be defe ctive based on visual inspection. Table 417.3.5:1 Price Adjustments for Density Percent of Determined Maximum Density Pay factor (%) ≥ 98 100 95.0 – 97.9 95 92.0 – 94.9 80 < 92.0 Reject The Contractor shall remove and replace rejected Material iden tified in Table 417.3.5:1, “Price Adjustment for Density.” Instead of removing and replac ing rejected Material, the Project Manager may allow the Material to remain in place at 50 % of the Bid Item Unit Price, if in the best interest of the Department.
417.4 Method of Measurement
The Department will measure all pa y items using the dimensions shown in the Contract or approved modifications.
417.5 Basis of Payment
The Department will adjust payment for miscellaneous paving in accordance with Pay Item Pay Unit Miscellaneous Paving Square Yard Section 417: Miscellaneous Paving Page 209 Asphalt Curb Linear foot
417.5.1 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. Asphalt binder, aggregate, blending sand, mineral filler, mi neral admixture, and WMA additive or process as appropriate; 2. Mixing, hauling, placement, and compaction of HMA or WMA; 3. Quality Control in accordance with Section 902, “Quality Con trol;” and 4. Providing Mix Design in accor dance with Section 423.2.8, “Mi x Design.” Section 423: Hot Mix Asphalt (HMA) (Major Paving) Page 210