270 Page 152270 SALVAGING, PROCESSING, AND STOCKPILING GRANULAR BASE AND ASPHALT CONCRETE MIX MATERIAL
270.1DESCRIPTION
This work consists of salvaging, processing, blending, crushing, and stockpiling salvaged material from the existing roadway. Salvaged material will consist of granular material, asphalt concrete mix material, or asphalt mix and granular base material.
270.2MATERIALS
Salvaged material will meet the requirements of Section 884.
270.3CONSTRUCTION REQUIREMENTS
A.General: The Contractor will not dispose of salvaged material or use the salvaged material for any purpose other than purposes designated in the plans without approval by the Engineer. B.Salvage and Stockpile Granular Material or Salvage and Stockpile Asphalt mix and Granular Base Material: 1.Salvaging: The salvaged material will be removed and loaded in a manner that minimizes waste and avoids contamination of the salvage material with underlying subgrade soil. Scrapers will not be used for the removing or loading operations but may be used to haul the material. Salvaging of material will not exceed 2 miles in advance of the grading operation. Salvaging of material may extend to 3 miles in advance of the grading operation if approved by the Engineer. The Engineer will only approve the request if the Contractor can demonstrate that the additional distance is necessary for the grading operation and that sufficient access is provided at intersecting roads and driveways. The material will be moved toward the center of the road, to the extent necessary to ensure that salvage material is not lost down inslopes. 2.Processing: Processing and blending may be accomplished in place, provided the Contractor's method meets the blending and gradation requirements and has positive depth control. 3.Stockpiling: Asphalt concrete mix and granular material will be processed or crushed and stockpiled together so that a uniform blend is obtained. The salvaged material may be stockpiled at contractor provided sites. Prior to stockpiling, the stockpile site will be prepared by removal of the top 6 inches of topsoil and the area bladed smooth. C.Salvage and Stockpile Asphalt Mix Material: 1.Salvaging: The salvaged material will be removed and loaded in a manner that minimizes waste and avoids contamination of the salvage material. Scrapers will not be used for the removing or loading operations but may be used to haul the material. Salvaging of material will not exceed 2 miles in advance of the grading operation, unless otherwise directed. The material will be moved toward the center of the road, to the extent necessary to ensure that salvage material is not lost down inslopes. 270 Page 1532.Stockpiling: Salvaged asphalt mix material will be processed or crushed and stockpiled so a uniform blend is obtained. Prior to stockpiling, the stockpile site will be prepared by removal of the top 6 inches of topsoil and the area bladed smooth. Stockpiles will be constructed in accordance with Section 320.3 C. The stockpiles will not contain dirt, grease, oil, brick, paving fabric, clay balls, organic debris, and other foreign material.
270.4METHOD OF MEASUREMENT
Salvage and stockpile granular material, salvage and stockpile asphalt mix and granular base material, and salvage and stockpile asphalt mix material will be measured to the nearest 0.1 ton at the time it is hauled to the road. When less than 5,000 tons of salvaged material is required on a project, the material may be measured in a stockpile and converted to tons using a factor of 1.50 tons per cubic yard, in lieu of weighing the material. Alternate measurement techniques may be allowed if agreed upon by the Contractor and Engineer prior to salvaging operations commencing. Material stockpiled for future use will be measured in the stockpile and converted to tons using a factor of 1.50 tons per cubic yard. The unclassified excavation quantities will not be increased or decreased to reflect whether salvaged material was taken from cut or fill sections.
270.5BASIS OF PAYMENT
Salvage and stockpile granular material, salvage and stockpile asphalt mix and granular base material, and salvage and stockpile asphalt mix material will be paid for at the contract unit price per ton. Payment will be full compensation for work required to salvage, haul, process or crush, and stockpile the material. Removal of this material is also included in and paid for once under the item of unclassified excavation. 280 Page 154280 FULL DEPTH RECLAMATIOIN (FDR)
280.1DESCRIPTION
Full depth reclamation (FDR) will consist of processing and blending the asphalt mix and granular base material and placing, watering, shaping, and compacting the material to the typical section.
280.2MATERIALS
The asphalt mix and granular base material will conform to Section 884.
280.3CONSTRUCTION REQUIREMENTS
A.Equipment: 1.Recycling Equipment: The equipment will be self-propelled and capable of processing and blending the material to the depth specified in the plans. 2.Rollers: Pneumatic tired rollers will have an effective roller weight of at least 250 pounds per inch of roller width or satisfactory vibratory compaction equipment. Tires will be uniformly inflated so their air pressures will not vary by more than 5 psi. Rollers will be operated with tire pressures and wheel loads within the manufacturer’s recommended range for the size and ply of the tire being used. Steel rollers will furnish a minimum rolling weight of 275 pounds per inch of rolling width. B.Processing and Laydown: Asphalt concrete mix and granular base material will be processed in place so that a uniform blend is obtained. The material will be handled to ensure that salvaged material is not lost down the inslope. The processed material will be placed in a minimum of two lifts. The maximum lift thickness will not exceed 4 inches. The depths of the in-place asphalt concrete and granular base material may vary from what is shown in the plans. The Contractor will be responsible for interpreting the depths and including all costs to process the required depth of existing pavement and granular material. Each layer will be compacted to the required density before the next lift is placed and will be rolled until a uniform, stable surface is obtained. The final rolling of the top surface of the granular materials will embed as many loose stones as possible. The finished surface will be smooth and free from waves and the Contractor will finish the surfacing materials to within ±0.5% of the typical section cross slope. The quarter crown within any 12-foot transverse length (or actual lane width paved with a single paver pass) will not exceed 0.04 feet when measured with a straight edge, stringline, or other suitable equipment. The centerline will be finished to a transverse distance within ± 0.25 feet of the plans shown location of centerline.