DOT_Patching_Special_Provisions_Patching_Items.pdf

Rev. 09/15/2021

ITEM #0406124A

ITEM #0406124A – BITUMINOUS CONCRETE SURFACE PATCHING

Description: This work shall consist of sweeping and cleaning areas of deteriorated pavement of all loose and delaminated pavement materials, disposing of deteriorated pavement materials, application of tack coat, and placement of Hot-Mix Asphalt (HMA) or an equivalent Polymer

Modified Asphalt (PMA) to match the elevation of the surrounding pavement.

For road sections being milled and paved, all patching operations must be completed after milling is complete and before paving begins. All patching operations shall be completed within one working day following milling and shall be completed before traffic is permitted to resume on the exposed roadway.

Materials: Materials for this work shall meet the requirements of Section M.04 and shall consist of the following:

1. HMA S0.25, HMA S0.375, or an equivalent PMA. All HMA or PMA shall be Traffic Level 2 unless indicated otherwise on the plans.

2. Tack coat.

Construction Methods:

Equipment for this work shall include a sweeper capable of remove millings and loose debris, an air compressor capable of producing 100 psi oil free compressed air for cleaning the area to be patched, tools for the placement of bituminous concrete, and pavement compaction equipment to perform patching operations, such as a plate compactor.

1. The Engineer will mark out areas for patching that are broken, damaged, distorted, or delaminated in order to provide a suitable surface for placement of a layer of bituminous concrete. Examples of such areas to be patched include potholes, open longitudinal joints, ruts, and depressions.

2. Sweep and clean the areas to be patched in order to remove all loose and delaminated material to the satisfaction of the Engineer.

3. Clean off any residual dust or small debris using compressed air to the satisfaction of the

Engineer, and allow area to fully dry.

4. A uniform application of tack coat meeting the requirements of Section 4.06 shall be applied prior to patching. It shall cover the entire surface area of the patch and be allowed to sufficiently cure or break.

5. Place and compact HMA S0.25, HMA S0.375, or an equivalent PMA by means acceptable to the Engineer and to the elevation meeting the surrounding pavement.

Method of Measurement: This work will be measured by the number of square yards of patched roadway completed and accepted.

Basis of Payment: This work will be paid for at the Contract unit price per square yard of

“Bituminous Concrete Surface Patching." The price shall include all tools, materials, labor, equipment, disposing of deteriorated materials, sweeping and cleaning, tack coat application, and placement and compaction of HMA or PMA.

Pay Item Pay Unit

Bituminous Concrete Surface Patching s.y.

Rev. 07/14/2025

Item #0406125.20A

ITEM #0406125.20A – BITUMINOUS CONCRETE PATCHING –

PARTIAL DEPTH

Description:

This work shall consist of milling out deteriorated bituminous concrete pavement to a depth between 1.5 to 2.5 inches, disposing of pavement millings, sweeping and cleaning, application of tack coat on all surfaces within the milled area, and placement of Hot-Mix Asphalt (HMA) or an equivalent Polymer Modified Asphalt (PMA) to match the elevation of the surrounding pavement.

For road sections being milled and paved, all patching operations must be completed after milling is complete and before paving begins. All patching operations shall be completed within one working day following milling and shall be completed before traffic is permitted to resume on the exposed roadway.

Materials:

Materials for this work shall meet the requirements of Section M.04 and shall consist of the following:

3. HMA S0.375, or an equivalent PMA. All HMA or PMA shall be Traffic Level 2 unless indicated otherwise on the Plans.

4. Tack coat.

Construction Methods:

Equipment for this work shall include, but is not limited to, the following:

1. Milling machine: A milling machine designed and built for milling flexible pavements. It shall be self-propelled with sufficient power, traction, and stability to maintain depth and slope and shall be capable of removing the existing bituminous concrete pavement.

The rotary drum of the machine shall use carbide or diamond tip tools spaced not more than 15 mm apart. The forward speed of the milling machine shall be a maximum of 45 feet/minute. The tools on the revolving cutting drum must be continually maintained and shall be replaced as warranted to provide a uniform pavement texture.

The machine shall be equipped with an integral pickup and conveying device to immediately remove milled material from the surface of the roadway and discharge the millings into a truck in one operation. The machine shall also be equipped with a means of effectively limiting the amount of dust escaping from the milling and removal operation.

When milling smaller areas or areas where it is impractical to use the above described equipment, the Contractor may be permitted to use a lesser equipped milling machine, if approved by the Engineer.

The minimum milling width shall be 20 inches, making the minimum achievable patch size

20 inches by 20 inches, or 0.30 square yards.

2. 10-foot straight edge.

3. Sweeper: A sweeper, equipped with a water tank, capable of remove millings and loose debris.

4. Air compressor: An air compressor capable of producing 100 psi oil free compressed air for cleaning the milled pavement surface.

5. Hot air lance: A hot air lance that can deliver 100 psi oil free heated air to clean and dry the pavement surface. The compressed air emitted from the tip of the lance shall achieve a temperature of at least 1500°F.

6. Paving and compaction equipment: Paving and compaction equipment meeting the requirements of Section 4.06. It is expected that placement of patch material will require hand work or a mixture of equipment and hand tools to achieve the required results. A vibratory roller must be used for compaction. Smaller equipment, including vibratory plate compactors, may be allowed for areas inaccessible by the roller when requested by the

Contractor and approved by the Engineer.

7. Portable lighting equipment: If the work is performed at night a truck towed light tower and driver shall be provided for use by the Engineer for all marking, installation, and inspection of the patches.

8. Tack Coat Distributor: A minimum 150-gallon capacity tank that is trailer mounted or self-propelled and capable of applying tack coat meeting the requirements of Section 4.06.

The work shall include, but is not limited to, the following:

1. Demarcating: The Engineer will mark out areas for patching and will determine the appropriate milling depth between 1.5 inches and 2.5 inches. The minimum length and width dimensions of the patch shall be 20 inches. Any area to be patched shall completely encompass the entire distressed pavement area and extend at least 6 inches beyond into the surrounding pavement wherever possible.

2. Milling: Mill marked out areas to the specified depths.

3. Sweeping, Cleaning, and Drying: Sweep the milled surface clean, and allow milled areas to dry. Any moisture in or on the milled areas must be allowed to evaporate or be removed with the assistance of the hot air lance. When the milled area is dry to the satisfaction of the Engineer, it shall be blown clean of any residual dust or debris using compressed air.

4. Applying Tack Coat: Apply tack coat to the entire clean and dry milled area, including the sides/walls of the area to be patched, in accordance with the requirements of Section 4.06.

5. Placing/Compacting Patch Material: After the tack coat has had sufficient time to cure or break, HMA S0.375 (or equivalent PMA) shall be placed within the milled area. The patch material shall then be compacted by a minimum of 5 passes with a vibratory roller or other approved equipment to the satisfaction of the Engineer. A “pass” is defined as one coverage of a roller over any given pavement surface area in a single direction. At all times the

Contractor is required to meet the placement, compaction, and other applicable requirements specified within Sections 4.06 and M.04, except that cores for field density measurements will not be taken or evaluated for patching work under this item.

6. Finished Patches: After placement and compaction, the Contractor shall confirm that the surface elevation of the finished patch matches the elevation of the surrounding pavement surface to within 1/4 inch using the 10-foot straightedge. The Contractor shall confirm that all patch material placed is uniform in appearance without segregation.

Method of Measurement:

This work will be measured by the number of square yards of patched bituminous concrete completed and accepted.

Basis of Payment:

This work will be paid for at the Contract unit price per square yard of “Bituminous Concrete

Patching – Partial Depth.” The price shall include all tools, materials, labor and equipment;

milling, removing, and disposing of pavement millings; sweeping and cleaning of the milled area;

drying the milled area; applying tack coat to the milled area; and placement and compaction of

HMA or PMA.

Bituminous Concrete Patching – Partial Depth s.y.

Item #0406128.20A

ITEM #0406128.20A – BITUMINOUS CONCRETE PATCHING – FULL

DEPTH

Description: This work shall consist of sawcutting, removing and properly disposing of deteriorated bituminous concrete pavement, regrading and recompacting the existing granular base, cleaning and application of tack coat on the vertical faces of the sawcut, and placement of

Hot-Mix Asphalt (HMA) or an equivalent Polymer Modified Asphalt (PMA) at the same thickness as surrounding pavement (minimum 6 inches) and as shown on the plans.

Materials: Materials for this work shall meet the requirements of Section M.04 and shall consist of the following:

5. HMA S0.5, HMA S0.375 (when requested by the Contractor and approved by the Engineer at least 5 days in advance), or an equivalent PMA. All HMA or PMA shall be Traffic Level

2 unless indicated otherwise on the plans.

6. Tack coat.

Construction Methods: Equipment for this work shall include pavement cutting, removal, material handling, and small compaction equipment to perform all patching operations. The

Contractor shall provide a tack coat distributor with a minimum 150-gallon capacity tank that is trailer mounted or self-propelled and capable of applying tack coat meeting the requirements of

Section 4.06. The Contractor shall also provide a 10-foot straightedge. If the work is performed at night a portable truck towed light tower and driver shall be provided for use by the Engineer for all marking, installation, and inspection of the patches.

All equipment used to place and compact the HMA or PMA shall meet the requirements of

Section 4.06. Due to the nature of this work, the equipment shall be small to medium size to fit excavated areas to be patched. It is also expected that placement of HMA or PMA will require hand work or a combination of equipment and hand work methods and tools to achieve the required results.

6. The Engineer will mark out areas for patching. The minimum dimension of areas to be patched shall be 24 inches. Any area to be patched shall completely encompass the entire distressed pavement area and extend at least 6 inches beyond into the surrounding pavement wherever possible.

7. Sawcut at the marked areas through the full depth of the bituminous concrete pavement.

8. Remove existing pavement from within the sawcut minimizing disturbance of the existing granular base.

9. Regrade the existing granular base and recompact it using jumping jack or vibratory plate compactors. A minimum of 4 passes or coverages must be made by the compaction device.

If existing granular base material is lost during the excavation of the deteriorated pavement, the Contractor shall add material meeting the requirements of Section 3.04. Compaction of the granular base material shall meet the density requirements of Section 3.04.

Item #0406128.20A

10. If it is determined that poor or inadequate granular base is contributing to the distress in the asphalt layers, the Engineer may direct that it be removed and Processed Aggregate Base be placed and compacted.

11. The cut sides/walls of the excavated area shall be wiped or swept clean. Tack coat shall be applied covering the entire area of the vertical bituminous concrete faces and allowed to cure or break.

12. HMA S0.5 or PMA S0.5 shall be placed in lifts between 2 inches and 3 inches, shall have a final lift thickness placed at 2 inches, and be placed as shown in the plans. HMA S0.375 or

PMA S0.375 shall be placed in lifts between 1.5 inches and 2.5 inches, shall have a final lift thickness placed at 1.5 inches, and be placed as shown in the plans. Pavement placement shall also be in accordance with Subarticle 4.06.03-6. The Contractor shall confirm that the surface elevation of the finished patch matches the elevation of the surrounding pavement surface to within 1/4 inch using the 10-foot straightedge. The Contractor shall confirm that all patch material placed is uniform in appearance without segregation.

13. All excavated materials shall be properly disposed of at the end of the work shift in accordance with Article 1.10.03.

Method of Measurement: This work will be measured by the number of square yards of patched bituminous concrete completed and accepted.

Basis of Payment: This work will be paid for at the Contract unit price per square yard for

“Bituminous Concrete Patching - Full Depth” completed and accepted. The price shall include all tools, materials, labor and equipment, including sawcutting, pavement removal and disposal, grading and compaction of existing granular base, cleaning, tack coat application, and HMA or

PMA placement and compaction.

There will be no additional compensation for replacing granular base material lost during the excavation of the deteriorated pavement.

Inadequate or poor granular base foundations that cannot be recompacted as determined by the

Engineer will be paid for at the Contract unit price per cubic yard of “Processed Aggregate Base.”

Bituminous Concrete Patching - Full Depth s.y.