VA 32 12 16-2009 ASPHALT PAVING.pdf
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1、10-09 32 12 16 - 1 SECTION 32 12 16 ASPHALT PAVING SPEC WRITER NOTE: Delete or add information between / - / and any other items applicable to project. Any item added to the text shall be covered under Applicable Publications and Products and the paragraphs renumbered. PART 1 - GENERAL 1.1 DESCRIPTI
2、ON This work shall cover the composition, mixing, construction upon the prepared subgrade, and the protection of hot asphalt concrete pavement. The hot asphalt concrete pavement shall consist of an aggregate or asphalt base course and asphalt surface course constructed in conformity with the lines,
3、grades, thickness, and cross sections as shown. Each course shall be constructed to the depth, section, or elevation required by the drawings and shall be rolled, finished, and approved before the placement of the next course. SPEC WRITER NOTE: The Designer and Spec Writer shall determine whether th
4、e State Highway Spec will be used or a new specification will be developed to cover the work of this Section. This guide specification is for use when the project requirements shall conform to the State Highway Spec. Highway spec must contain quality standards, percentage of compaction, and tests fo
5、r quality and field and laboratory compaction. Where the Highway Spec calls for “Test“, items “Designated“, items to be “Established“ and other such delegated duties to be performed by a State “Commission“, “Engineer“, “Laboratory“ or other authorized agent; edit this spec to have responsibility for
6、 these items to be that of the Contractor. The Contractor shall retain and reimburse a laboratory to perform said duties; or to obtain a certification from the authorized representative of the State; or to obtain certification from the asphalt paving producer. Certificate of compliance shall cover q
7、uality and gradation of aggregate base, quality and grades of asphalt course materials, and that the job-mixture meets or exceeds the State requirements. 1.2 RELATED WORK A. Laboratory and field testing requirements: Section 01 45 29, TESTING LABORATORY SERVICES. B. Subgrade Preparation: Paragraph 3
8、.3 and Section 31 20 00, EARTH MOVING. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-10-09 32 12 16 - 2 C. Pavement Markings: Section 32 17 23, PAVEMENT MARKINGS. 1.3 INSPECTION OF PLANT AND EQUIPMENT The Resident Engineer shall have access at all
9、times to all parts of the material producing plants for checking the mixing operations and materials and the adequacy of the equipment in use. 1.4 ALIGNMENT AND GRADE CONTROL The Contractors Registered Professional Land Surveyor shall establish and control the pavement (aggregate or asphalt base cou
10、rse and asphalt surface course) alignments, grades, elevations, and cross sections as shown on the Drawings. 1.5 SUBMITTALS A. In accordance with Section 01 33 23, SHOP DRAWINGS, PRODUCT DATA, AND SAMPLES, furnish the following: B. Data and Test Reports: 1. Aggregate Base Course: Sources, gradation,
11、 liquid limit, plasticity index, percentage of wear, and other tests required by State Highway Department. 2. Asphalt Base/Surface Course: Aggregate source, gradation, soundness loss, percentage of wear, and other tests required by State Highway Department. 3. Job-mix formula. C. Certifications: 1.
12、Asphalt prime and tack coat material certificate of conformance to State Highway Department requirements. 2. Asphalt cement certificate of conformance to State Highway Department requirements. SPEC WRITER NOTE: Add required certification to Subparagraph 3. 3. Job-mix certification - Submit plant mix
13、 certification that mix equals or exceeds the State Highway Specification. D. One copy of State Highway Department Specifications. E. Provide MSDS (Material Safety Data Sheets) for all chemicals used on ground. PART 2 - PRODUCTS 2.1 GENERAL A. / Aggregate base / Asphaltic base / and asphalt concrete
14、 materials shall conform to the requirements of the following and other appropriate sections of the latest version of the State Highway Material Specifications, including amendments, addenda and errata. Where the term “Engineer“ or “Commission“ is referenced in the State Highway Provided by IHSNot f
15、or ResaleNo reproduction or networking permitted without license from IHS-,-,-10-09 32 12 16 - 3 Specifications, it shall mean the VA Resident Engineer or VA Contracting Officer. SPEC WRITER NOTE: Add any construction requirements not adequately specified in the State Highway Spec. 2.2 AGGREGATES A.
16、 Provide aggregates consisting of crushed stone, gravel, sand, or other sound, durable mineral materials processed and blended, and naturally combined. B. Subbase aggregate (where required) maximum size: 38mm(1-1/2“). C. Base aggregate maximum size: 1. Base course over 152mm(6“) thick: 38mm(1-1/2“);
17、 2. Other base courses: 19mm(3/4“). D. Asphaltic base course: 1. Maximum particle size not to exceed 25.4mm(1”). 2. Where conflicts arise between this specification and the requirements in the latest version of the State Highway Specifications, the State Specifications shall control. E. Aggregates f
18、or asphaltic concrete paving: Provide a mixture of sand, mineral aggregate, and liquid asphalt mixed in such proportions that the percentage by weight will be within: Sieve Sizes Percentage Passing 19mm(3/4“) 100 9.5mm(3/8“) 67 to 85 6.4mm(1/4“) 50 to 65 2.4mm(No. 8 mesh) 37 to 50 600m(No. 30 mesh)
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