Furnish and construct a finish course of asphalt concrete mixture in conformance with these specifications and in conformance with the lines, grades, thicknesses, and typical sections shown on the plans or established. A finish course is defined as a 501 thin lift mix placed over a 502 asphaltic concrete pavement or a Portland cement concrete pavement. Comply with Section 503 and the Application of Quality Assurance Specifications for Asphalt Concrete Mixtures (QA Manual). Use a DOTD certified laboratory accredited by AMRL, CMEC, or other accreditation agency approved by DOTD. These specifications apply to all asphalt concrete thin lift mixtures with typical plan thicknesses between ¾ inches and 1½ inches. The following mixtures are further described herein and as shown on the plans: 1. Dense Mix – traffic volumes less than 3,500 ADT. 2. Coarse Mix – all traffic volumes. Can be substituted in place of Dense Mix without change order. 3. Open Graded Friction Course (OGFC) – all traffic volumes, typically specified for use on Interstate Highway System. Can be substituted in place of Coarse Mix or Dense Mix applications without change order. E-10 Supplemental Specifications (August 2022) Page 6 of 120 Use the same mixture type throughout the project length unless approved otherwise by the Project Engineer. 501.01.2 Quality Assurance: Work shall meet the requirements of this section and be subject to acceptance by the Department. Exercise quality control as defined in 101.03. When these specifications are not being met and satisfactory control adjustments are not being made, discontinue operations and notify the Project Engineer immediately until proper adjustments and uniform operations are established. The contractor will have a quality control program independent of the Department's testing and ensure that the requirements of the job mix formula (JMF) are being achieved and that necessary adjustments provide the specified results. Do not begin daily plant operations unless the contractors’ Certified Asphalt Concrete Plant Technician (Level 2 or Level 3) is at the plant. When the plant is in operation, have a Certified Asphalt Concrete Plant Technician at the plant or jobsite. 501.02 MATERIALS. Comply with applicable subsections listed herein. Sample and test in accordance with the Material Sampling Manual and the test procedures described in Table 502-1. Keep accurate records including proof of deliveries of materials for use in these processes. Ensure that materials comply with the following Sections and Subsections and as specified in this section: Asphalt Cement 1002 Anti-Strip Additives 1002.02.1 Aggregates 1003.01 & 1003.06 Hydrated Lime 1018.02 Crumb Rubber 1002.02.2 Mix Release Agent 1018.10 Mineral Filler 1003.06.6 Fibers 1002.02.5 Reclaimed Asphalt Pavement (RAP) 1003.01 & 1003.06.5
