325.1 General Description
This work includes patching with soil-cement construction, cement stabilized graded aggregate construction, or select material stabilized construction. Construct according to the Plans, the Proposal, or as directed by the Engineer.
325.1.01 Definitions
General Provisions 101 through 150.
325.1.02 Related References
A. Standard Specifications Section 109—Measurement and Payment Section 209—Subgrade Construction Section 301—Soil-Cement Construction Section 316—Cement Stabilized Graded Aggregate Construction Section 412—Bituminous Prime Section 810 – Roadway Materials B. Referenced Documents General Provisions 101 through 150.
325.1.03 Submittals
General Provisions 101 through 150.
325.2 Materials
Ensure that materials meet the requirements of the following Specifications: Material Section Soil-Cement Construction 301 Cement Stabilized Graded Aggregate Construction 316 Bituminous Prime 412 Subgrade Construction 209 Ensure that the subgrade stabilizer-select material meets the requirements of Subsection 810.2.01, Roadway Materials—Class IIB3 or better. Any special gradation will be specified by a Special Provision.
325.2.01 Delivery, Storage, and Handling
General Provisions 101 through 150.
325.3 Construction Requirements
Ensure that all labor, equipment, and materials necessary to ensure a continuous patching operation are on hand before patching begins.
325.3.01 Personnel
General Provisions 101 through 150.
325.3.02 Equipment
Provide all the equipment required for the type of patching used. A concrete mixer with proper weight and moisture control will be considered as a stationary mixing plant for the production of patching material under this Specification.
325.3.03 Preparation
Prepare stabilized base material areas for patching as follows: 1. Trim the sides of the areas to be patched and leave them vertical. Remove all loose material. 2. Remove unsatisfactory material to the depth shown on the Plans or as directed by the Engineer; remove at least 6 in. (150 mm) of material. 3. If unsatisfactory material is below a plane that is 1 ft. (300 mm) below the existing surface, undercut the area as necessary. 4. Backfill the area with subgrade stabilizer-select material to 1 ft. (300 mm) below the existing surface. Use subgrade that meets the requirements of Section 209.
325.3.04 Fabrication
General Provisions 101 through 150.
325.3.05 Construction
Patch during traffic unless otherwise specified. Follow the requirements of Section 301 unless otherwise stated in this Specification. Patch stabilized base material areas as follows: 1. Thoroughly compact patches at the optimum moisture to at least 100 percent of the maximum laboratory dry density. 2. Compact to the required degree with a conventional steel wheel, pneumatic tired roller, mechanical tampers, or other devices. 3. Lightly spray or mop each patch with bituminous prime. Sand primed areas subject to traffic as directed by the Engineer.
325.3.06 Quality Acceptance
General Provisions 101 through 150.
325.3.07 Contractor Warranty and Maintenance
Repair or replace damaged or destroyed patch at no additional cost to the Department.
325.4 Measurement
A. Base Material Base material is measured by the cubic yard (meter), loose volume, as specified in Subsection 109.01, Measurement and Quantities. B. Subgrade Stabilizer-Select Material Subgrade stabilizer-select material is measured by the cubic yard (meter), loose volume, as specified in Subsection 109.01, Measurement and Quantities.
325.4.01 Limits
General Provisions 101 through 150.
325.5 Payment
A. Base Material The accepted quantity of base material will be paid for at the Contract Unit Price per cubic yard (meter). This payment will be full compensation for: • Flagging and directing traffic • Preparing the patched area • Furnishing material, including Portland cement and bituminous prime • Loading, unloading, and hauling material • Crushing • Processing • Mixing • Spreading • Watering • Compacting • Maintaining material B. Subgrade Stabilizer-Select Material Subgrade stabilizer-select material will be paid for at the Contract Unit Price per cubic yard (meter) complete in place and accepted. Payment will be full compensation for: • Removing and disposing asphalt pavements, base materials, and unsatisfactory subgrades • Furnishing all material • Loading, hauling, and unloading material • Mixing • Compacting • Finishing • Watering Payment will be made under: Item No. 325 Soil-cement stabilized base course for patching Per cubic yard (meter) Item No. 325 Graded aggregate, cement stabilized base for patching Per cubic yard (meter) Item No. 325 Subgrade stabilizer-select material for patching Per cubic yard (meter)
325.5.01 Adjustments
General Provisions 101 through 150.
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