430.01 Description.
428.05 Basis of Payment.
a.Unit Price Coverage . The scoring of bituminous pavement surface, measured as noted above, will be paid for at the contract unit price bid which shall be full compensation for the scoring of the pavement, and for all materials, equipment, tools, labor, and incidentals necessary to complete the work.
b.Payment will be made under Item No .: 428-A Scoring Bituminous Pavement Surface – per mile {kilometer} SOIL OR AGGREGATE TYPE SURFACE
430.01 Description.
The work under this Section shall consist of constructing a temporary or permanent surface course of soil type material (Selected Material, Granular Soil or Soil Aggregate, etc.) or graded aggregate type material. The plans or proposal will designate the type of material to be used.
430.02 Material.
All material furnished for use shall meet the appropriate requirements of Division 800, Materials, for the classification of material specified by the pay item.
430.03 Construction Requirements.
a.Equipment . Selection of the appropriate type of equipment to satisfactorily accomplish the work will, in general, be at the option of the Contractor.
b.Preparation of Underlying Surface . Before placing the surface material, the subgrade shall comply with the requirements of Subarticle 301.03(a). If the soil or aggregate surfacing is to be used in a temporary manner for handling traffic, the requirements for underlying surface preparation may be modified as shown on the plans, or directed by the Engineer, and control elevation stakes will not be necessary. If the soil or aggregate surfacing is used for shoulder construction adjacent to the resurfacing of the roadway, the requirements given in Subarticle 301.03(a) will not be appli cable and the underlying surface shall be compacted as directed by the Engineer.
c.Placing, Spreading and Shaping . Local type materials (Selected Material, Granular Soil, and Soil Aggregate) shall be yard mixed as described in Item 301.03(c)3 before bein g hauled to the roadbed. Approved surfacing material may be dumped directly on the prepared subsurface and the material spread to the width and depth shown on the plans or directed. Water shall be added if so directed. Mixing will not be required unless so specified on the plans. If mixing is specified, it shall be performed in accordance with the requirements of Item 301.03(c)2. Upon completion of the spreading, the material shall be shaped to the cross section shown on the plans and rolled to a smooth riding surface, free from high spots or depressions and satisfactory to the Engineer. Specific density requirements are waived; however, it shall be compacted to the satisfaction of the Engineer. After being placed and shaped to proper crown and grade the sur face shall be shaped at frequent intervals as directed and shall be kept free of ruts and holes. New material shall be added and bladed as needed and as directed. The surface shall be maintained in satisfactory condition in the manner described above until the contract is accepted.
430.04 Method of Measurement.
The quantity of surfacing material placed on the roadbed will be measured in cubic yards {cubic meters} in accordance with the provisions of Subarticle 109.01(i), or per ton {metric ton} measured by weight {mass} in accordance with the provisions of Subarticle 109.01(h).
433.02 Materials.
430.05 Basis of Payment.
a.Unit Price Coverage . Surfacing material ordered and accepted, measured as noted above, will be paid for at the contract unit price bid which shall be full compensation for the material complete in place on the roadbed and includes all costs incident to furnishing and producing the material, all hauling, spreading, mixing, watering, compacting, shaping, and for all equipment, tools, labor, and incidentals ne cessary to complete the work. Additional material used in the maintenance will be measured and paid for under this item.
b.Payment will be made under Item No .: 430-A Soil Type Surfacing( Kind Material ) - per cubic yard {cubic meter} 430-B Aggregate Surf acing( ALDOT Size of Material ) - per ton {metric ton} SECTION 433 SCRUB SEAL
433.01 Description.
This Section covers the placement of a polymer modified asphalt rejuvenating scrub seal.
433.02 Materials.
All materials shall comply with the requirements of Division 800, Materials, except as noted herein. Special reference is made to the following:
a.Emulsion. Sources for scrub seal shall meet the requirements given in Article 804.01. The emulsion shall be a CMS -1PC for rejuvenating scrub seal meeting the requirements in Table 1. Table 1 Property Method Specification CMS-1PC Test on Emulsion Viscosity @ 77°F (SFS) AASHTO T 59 50-350 Residue, w%, minimum AASHTO T 59 60 pH ASTM E70 2.0-5.0 Sieve, w%, max. AASHTO T 59 0.1 Oil distillate, w%, max. AASHTO T 59 0.5 Test on Residue(1) Penetration @ 39.2 °F, 200 g, 60 sec., minimum AASHTO T 49 30 MSCR, 52 °C, Jnr, 3.2/kPa, max. AASHTO T 350 4.0 MSCR, 52 °C, % Recovery, 0.1/kPa, minimum AASHTO T 350 30 Test on Polymer: Tensile strength, die C dumbbell, psi, minimum ASTM D412 (2) 800 Swelling in rejuvenating agent, % maximum; 48 hours exposure @ 104°F ASTM D471(3) Modified 40% Test on Rejuvenating Agent: Flash point, COC, °F AASHTO T 48 380 Min Viscosity, 140°F, CST AASHTO T 201 15-175 Saturate, % by wt. ASTM D2007 30 Max Asphaltenes ASTM D2007 1.0 Max. Test on Residue from RTFO Weight Change, % AASHTO T 240 6.5 Max. Viscosity Ratio AASHTO T 201 3 Max
Source: Alabama Standard Specifications for Highway Construction, 2022 Edition. Pages 247–247 of 934.