Attachment 0001 River Birch Road Repaving Specifications.pdf

US Army Corps of Engineers Rock Island District

MISSISSIPPI RIVER BASIN

THOMPSON CAUSEWAY

RECREATIONAL AREA

THOMPSON, IL

RIVER BIRCH ROAD REPAVING

Specifications

NOVEMBER 2025

TABLE OF CONTENTS Page 1

Thompson Causeway Recreational Area River Birch Road Repaving

TABLE OF CONTENTS

DIVISION 32 - EXTERIOR IMPROVEMENTS

32 01 16 MILLING OF PAVEMENTS

32 12 10 TACK COAT

32 12 16 HOT-MIX ASPHALT (HMA) PAVING

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SECTION 32 01 16 Page 1

SECTION TABLE OF CONTENTS

SECTION 32 01 16

MILLING OF PAVEMENTS

PART 1 GENERAL

1.1 REFERENCES

1.2 EQUIPMENT, TOOLS, AND MACHINES

1.2.1 Cold-Milling Machine

1.2.2 Cleaning Equipment

PART 2 PRODUCTS

PART 3 EXECUTION

3.1 MILLING OPERATION

3.2 STOCKPILING OF MILLED MATERIAL

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SECTION 32 01 16 Page 2

SECTION 32 01 16

MILLING OF PAVEMENTS

PART 1 GENERAL

1.1 REFERENCES

The publication listed below forms a part of this specification to the extent referenced. The publication is referred to in the text by the basic designation only.

ILLINOIS DEPARTMENT OF TRANSPORTATION (ILDOT)

ILDOT (2022) Standard Specifications for Road and Bridge Construction

1.2 EQUIPMENT, TOOLS, AND MACHINES

Maintain equipment, tools, and machines used to complete the project work in a satisfactory working condition.

1.2.1 Cold-Milling Machine

In addition to the specified requirements, the milling equipment and machine is to be in accordance with the ILDOT. The cold-milling machine is to be capable of milling existing asphalt or concrete pavements to the specified depths and smoothness. The milling machine is to be capable of controlling transverse slopes and is to have effective means of controlling dust produced during milling operations. The milling machine is not to cause damage to any part of the existing pavement surfaces to remain.

1.2.2 Cleaning Equipment

Furnish cleaning equipment suitable for removing and cleaning loose milled materials and debris from the existing pavement surfaces to remain.

Not Used

SECTION 32 01 16 Page 3

3.1 MILLING OPERATION

Make sufficient passes with the milling machine so that the designated area is milled to the depths, grades, and cross sections indicated on the project plans. Proceed with care and with depth increments so that the existing pavement is completely removed without damaging any existing pavement to remain or the base course to remain under the milled pavement. Any items, such as manholes, valve boxes, and utility lines that are damaged or any existing pavement to remain that is torn, cracked, gouged, broken, or undercut is to be repaired or replaced as directed by the Government and at no additional cost to the Government.

3.2 STOCKPILING OF MILLED MATERIAL

Stockpile the milled pavement material at an on-site location in coordination with the Government. No milling materials are to be taken off-site.

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SECTION 32 12 10 Page 1

SECTION 32 12 10

TACK COAT

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 EQUIPMENT, MACHINES, AND TOOLS

1.3.1 General Requirements

1.3.2 Emulsified Asphalt Distributor

1.3.3 Heating Equipment for Storage Tanks

1.3.4 Hand and Power Brooms and Blowers

1.4 WEATHER LIMITATIONS

1.5 DELIVERY AND STORAGE

PART 2 PRODUCTS

2.1 EMULSIFIED ASPHALT

PART 3 EXECUTION

3.1 PREPARATION OF SURFACES

3.2 APPLICATION RATE

3.3 APPLICATION TEMPERATURE

3.4 APPLICATION

3.5 CURING PERIOD

3.6 TRAFFIC CONTROLS

SECTION 32 12 10 Page 2

SECTION 32 12 10

TACK COAT

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION

OFFICIALS (AASHTO)

AASHTO T 102 (2009; R 2013) Spot Test of Asphaltic Materials

ASTM INTERNATIONAL (ASTM)

ASTM D2397/D2397M (2019a) Cationic Emulsified Asphalt

ASTM D2995 (2014) Determining Application Rate of Bituminous Distributors

ASTM D977 (2019a; E 2019) Emulsified Asphalt

ILLINOIS DEPARTMENT OF TRANSPORTATION (ILDOT)

ILDOT (2022) Standard Specifications for Road and Bridge Construction

1.2 SUBMITTALS

The Government is to review and approve the indicated product data submittal prior to the start of the project work.

SD-03 Product Data

Tack Coat; OD-M

Provide product data indicating compliance with the specified tack coat material not less than 14 calendar days prior to the material being required for the project work.

SECTION 32 12 10 Page 3

1.3 EQUIPMENT, MACHINES, AND TOOLS

1.3.1 General Requirements

Equipment, machines, and tools used for the project work are subject to Government approval and are to be maintained in a satisfactory working condition at all times. Calibrated equipment such as emulsified asphalt distributors, scales, batching equipment, spreaders, and similar equipment are to be recalibrated by a calibration laboratory within 12 months prior to commencing the project work.

1.3.2 Emulsified Asphalt Distributor

Design and equip the distributor to spray the emulsified asphalt (bitumen) material, referred to as tack coat, in a uniform coverage at the specified temperature, at readily determined and controlled rates from 0.05 to 0.15 gallons per square yard, with a pressure range of 25 to 75 psi, with an allowable variation from the specified rate of not more than plus or minus 5 percent, and at variable widths. Calibrate the emulsified asphalt distributor in accordance with ASTM D2995. The distributor equipment is to include a separate power unit for the bitumen pump, full-circulation spray bars, tachometer, pressure gauges, volume-measuring devices, adequate heaters for heating the material to the proper application temperature, a thermometer for reading the temperature of the tank contents, and a hand hose attachment suitable for applying the tack coat manually to areas inaccessible to the distributor. Equip the distributor to circulate and agitate the tack coat during the heating process.

1.3.3 Heating Equipment for Storage Tanks

Provide steam, electric, or hot oil heaters. Steam heaters are to consist of steam coils and equipment for producing steam, designed so that the steam cannot get into the material. Fix an armored thermometer to the tank with a temperature range from 40 to 400 degrees F to determine the temperature of the material at all times.

1.3.4 Hand and Power Brooms and Blowers

Use hand and power brooms and blowers suitable to clean surfaces prior to application of the tack coat.

1.4 WEATHER LIMITATIONS

Apply tack coat only when surfaces are dry. Apply when the atmospheric temperature in the shade is 50 degrees F or above and when the temperature has not been below 35 degrees F for the 12 hours prior to application, unless otherwise directed by the Government.

1.5 DELIVERY AND STORAGE

Inspect the materials and equipment delivered for contamination and damage. Unload and store the materials and equipment with a minimum of handling in a designated place in coordination with the Government.

SECTION 32 12 10 Page 4

2.1 EMULSIFIED ASPHALT

The emulsified asphalt (bitumen) material is to be in accordance with ASTM D977, Grade SS-1 or ASTM D2397/D2397M, Grade CSS-1. The emulsified asphalt type to be compatible with the aggregate used in the HMA material. Dilute the emulsified asphalt with equal parts of water. The base bitumen used to manufacture the emulsion to show a negative spot when tested in accordance with AASHTO T 102 using standard naphtha.

3.1 PREPARATION OF SURFACES

Immediately prior to application of the tack coat, remove all dust, dirt, debris, and other objectionable materials from the surfaces to be treated by means of hand and power brooms and blowers. The surface to be dry and clean at the time of tack coat application.

3.2 APPLICATION RATE

Apply the tack coat in the exact quantities within the range specified, which may be varied to suit field conditions as needed.

For HMA binder surfaces and overlays that have not received an HMA surface course in 24 hours, apply tack coat in quantities of not less than 0.05 gallons and not more than 0.10 gallons per square yard of pavement surface. For the edges of existing concrete pavements that will receive HMA and the edges of asphalt patches, apply tack coat in quantities of not less than 0.10 gallons and not more than 0.15 gallons per square yard of edge surface.

3.3 APPLICATION TEMPERATURE

SS-1 150-180 degrees F CSS-1 130-170 degrees F

3.4 APPLICATION

Apply the tack coat with the emulsified asphalt distributor at the specified rate and with uniform distribution over the surfaces to be treated. Properly treat all areas and spots missed by the distributor with a hand sprayer. Until the succeeding layer of pavement is placed, maintain the surface by protecting the surface against damage and by repairing deficient areas at no additional cost to the Government. If required, spread clean dry sand to effectively blot up any excess tack coat material. No smoking, fires, or flames other than those from the heaters that are a part of the equipment are permitted within 25 feet of heating, distributing, and transferring operations of tack coat material other than the emulsified asphalt emulsions. Prevent all traffic, except for paving equipment used in constructing the HMA surfacing, from using the underlying material until the surfacing is complete. The tack coat is to conform to all the requirements as specified.

SECTION 32 12 10 Page 5

3.5 CURING PERIOD

Following the application of the tack coat but prior to placement of the succeeding layer of HMA pavement, allow tack coat to cure and evaporate any volatiles or moisture. Maintain the coated surface until the succeeding layer of pavement is placed by protecting the surface against damage and by repairing and recoating deficient areas. Furnish and spread enough sand to effectively blot up and cure any excess tack coat as needed.

3.6 TRAFFIC CONTROLS

Keep all vehicular traffic off of surfaces freshly treated with tack coat. Provide sufficient warning signs and barricades to divert traffic from driving on freshly treated surfaces.

SECTION 32 12 16 Page 1

SECTION 32 12 16

HOT-MIX ASPHALT (HMA) PAVING

1.2 SUBMITTALS

1.3 PLANT, EQUIPMENT, MACHINES, AND TOOLS

1.3.1 Hauling Equipment

1.3.2 HMA Pavers

1.3.3 Receiving Hopper

1.3.4 Rollers

1.3.5 Straightedge

PART 2 PRODUCTS

2.1 HOT MIX ASPHALT

PART 3 EXECUTION

3.1 WEATHER LIMITATIONS

3.2 SURFACE PREPARATION OF UNDERLYING COURSES

3.3 DELIVERY OF HMA

3.4 PLACEMENT OF HMA

3.4.1 Mechanical Spreader

3.4.2 Placement of HMA Strips After Initial Strip

3.4.3 Shoveling, Raking, and Tamping after Mechanical Spreading

3.4.4 Hand Spreading

3.5 COMPACTION OF HMA

3.5.1 Operation of Rollers and Tampers

3.5.2 Correcting Deficient Areas

3.6 JOINTS

3.7 GRADES AND FINISHED SURFACE REQUIREMENTS

3.8 PROTECTION OF HMA PAVEMENT

SECTION 32 12 16 Page 2

SECTION 32 12 16

HOT-MIX ASPHALT (HMA) PAVING

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM D2950/D2950M (2022) Density of Bituminous Concrete in Place by Nuclear Methods

ILLINOIS DEPARTMENT OF TRANSPORTATION (ILDOT)

ILDOT (2022) Standard Specifications for Road and Bridge Construction

1.2 SUBMITTALS

The Government is to review and approve the indicated product data and certificate submittals prior to the start of the project work.

SD-03 Product Data

Hot Mix Asphalt (HMA); OD-M

Provide product data indicating compliance with the specified ILDOT HMA material not less than 14 calendar days prior to the material being required for the project work.

SD-06 Test Reports

Density Test Results; OD-M

Provide density test results to the Government the same day tests are taken.

SD-07 Certificates

HMA Mixing Plant; OD-M

Provide certificate indicating the HMA mixing plant is in compliance with the ILDOT.

SECTION 32 12 16 Page 3

1.3 PLANT, EQUIPMENT, MACHINES, AND TOOLS

The plant used for the preparation of the HMA to be in accordance with the ILDOT. The HMA plant to be of such capacity to produce the quantities of HMA paving mixtures required. Provide hauling equipment, paving machines, rollers, miscellaneous equipment, and tools in sufficient numbers and capacity and in proper working condition to place the HMA paving mixtures at a rate equal to the plant output. Maintain equipment in good working order at all times during the project work.

1.3.1 Hauling Equipment

Provide trucks for the hauling of the HMA having tight, clean, and smooth metal beds. To prevent the HMA from adhering to the truck beds, coat the beds with a minimum amount of paraffin oil or lime solution. Petroleum based products are not to be used as a release agent. Truck beds are to have covers (tarps) to protect the HMA from adverse weather. When necessary to ensure that the HMA will be delivered to the site at the specified temperature, insulate or heat and securely fasten the cover.

1.3.2 HMA Pavers

HMA pavers to be self-propelled, with an activated screed, heated as necessary, and capable of spreading and finishing courses of HMA which will meet the specified thickness, smoothness, and grade. The pavers to have sufficient power to propel themselves and the hauling equipment without adversely affecting the finished surface.

1.3.3 Receiving Hopper

Provide HMA pavers with a receiving hopper of sufficient capacity to permit a uniform spreading operation and equipped with a distribution system to place the HMA uniformly in front of the screed without segregation. The screed is to effectively produce a finished HMA surface of the required evenness and texture without tearing, shoving, or gouging the surface.

1.3.4 Rollers

Provide rollers in good working condition and operate at slow speeds to avoid displacement of the HMA surface. The number, type, and weight of rollers to be sufficient to compact the HMA to the required density while it is still in a workable condition. Do not use equipment which causes excessive crushing of the HMA aggregate.

1.3.5 Straightedge

Furnish and maintain in good working condition one 10-foot straightedge with handles for testing the finished HMA surface. The straightedge is to be made available for Government use. The straightedge is to be constructed of aluminum or magnesium alloy, is to have blades of box or box-girder cross section with a flat bottom, and is to be reinforced to ensure rigidity and accuracy.

SECTION 32 12 16 Page 4

2.1 HOT MIX ASPHALT

The Hot Mix Asphalt (HMA) material for binder and surface courses is to be in accordance with ILDOT Standard Specifications for Road and Bridge Construction, IL-19.0 for the binder course and IL-9.5 for the surface course.

3.1 WEATHER LIMITATIONS

Unless otherwise approved by the Government, HMA courses are not to be placed when the surface temperature of the underlying course is below 50 degrees F. HMA is not to be placed on wet surfaces.

3.2 SURFACE PREPARATION OF UNDERLYING COURSES

Prior to applying tack coat and placement of the HMA courses, clean the underlying aggregate base course and binder course of all dust, dirt, debris, and objectionable materials with hand and power brooms and blowers. Remove any vegetation and other organic materials.

3.3 DELIVERY OF HMA

Deliver the HMA mixtures in such a manner that the temperature at the time of dumping into the mechanical spreader is not less than 225 degrees F or above 300 degrees F. HMA mixtures having temperatures less than 225 degrees F or above 300 degrees F when dumped into the mechanical spreader will be rejected for use.

3.4 PLACEMENT OF HMA

Place HMA courses on dry surfaces. HMA courses are not to be placed without ample time to complete spreading and rolling during daylight hours. The surface of any required HMA patch is to coincide with all abutting surfaces prior to the placement of the HMA course.

3.4.1 Mechanical Spreader

Adjust the mechanical spreader as needed and regulate its speed so that the surface of the course being placed is smooth and continuous without tears or pulling, and of such depth that when compacted, the thickness of the compacted HMA course and the finished HMA surface conforms to the thickness, grades, and cross sections indicated on the plans (plus 1/8 inch, minus 0 inch). Finished surfaces are to match the finished surfaces of adjacent and abutting pavements and features, as applicable. Each HMA strip placed before a succeeding strip is to be of such length that sufficient heat will be retained so that a joint can be obtained conforming to requirements for texture, density, and smoothness in accordance with paragraph "JOINTS." Construct longitudinal joints and edges to true line markings. Construct lines parallel to the centerline of the area to be paved and place stringlines coinciding with established lines for the mechanical spreader to follow. Place the HMA as continuous as possible and regulate the speed to permit proper rolling.

SECTION 32 12 16 Page 5

3.4.2 Placement of HMA Strips After Initial Strip

Place each succeeding HMA strip after the initial strip has been placed and compacted by overlaying the mechanical spreader screed 3 to 4 inches over the previously placed strip and at sufficient height that compaction will produce a smooth, dense HMA joint. The HMA placed along the edge of the previously placed strip is to be pushed back to the edge of the strip using a lute. When the quantity of HMA on the previously placed strip plus the uncompacted HMA in the strip placed exceeds that required to produce a smooth, dense joint, remove and dispose of the excess HMA.

3.4.3 Shoveling, Raking, and Tamping after Mechanical Spreading

Employ a sufficient number of experienced shovelers and rakers to follow the mechanical spreader, adding HMA and raking HMA as required to produce a course that, when completed, conforms to the specified requirements.

Broadcasting or fanning of the HMA over areas being compacted is prohibited. When segregation occurs in the HMA during placement, spreading operations are to be suspended until the cause is determined and corrected. Correct irregularities in the alignment of the course left by the mechanical spreader by trimming directly behind the spreader.

Immediately after trimming, compact the edges of the course thoroughly by tamping laterally with a lute. Distortion of the course during tamping is prohibited.

3.4.4 Hand Spreading

In areas where the use of mechanical spreading is impractical, spread the HMA by hand. Spread in a manner that prevents segregation and spread uniformly with hot shovels and rakes in loose layers of thickness that, when compacted, conform to required thicknesses, grades, and cross sections. Shovelers and rakers without stilt sandals are prohibited from standing in the HMA while spreading the course.

3.5 COMPACTION OF HMA

Begin rolling the HMA course immediately after spreading to avoid undue horizontal displacement. Delays in rolling freshly spread HMA is prohibited. After initial rolling, conduct preliminary tests for grade and smoothness. Before continuing rolling, correct any deficiencies so that the finished HMA course conforms to the requirements for grade and smoothness. Make further grade and smoothness checks as needed. After preliminary grade and smoothness tests, continue rolling until a density of not less than 93 percent, not over 97.4 percent, and not over 97 percent of maximum theoretical specific gravity is obtained for all portions of the course. A nuclear gauge is to be used to test the HMA course density in accordance with ASTM D2950/D2950M. Take one density test for every 2,000 square feet of asphalt placed for both the binder and surface courses at locations as directed by the Government. Complete compaction efforts before the HMA reaches 185 degrees F. Rolling for smoothness can continue after the HMA is below 185 degrees F. The speed of the rollers is to be slow enough at all times to avoid horizontal displacement of the HMA. The speed of the rollers is not to exceed 3 miles per hour for steel wheeled static or vibratory rollers or 8 miles per hour for pneumatic-tired rollers.

SECTION 32 12 16 Page 6

3.5.1 Operation of Rollers and Tampers

Use heavy pneumatic rollers, except for final rolling. The speed of the rollers to be slow enough at all times to avoid displacement of the HMA.

The displacement of the HMA resulting from reversing direction of the roller or from any other cause is to be corrected immediately using rakes, spreading fresh HMA, or removing HMA where necessary. Slightly alternate the passes of the roller in length. Moisten the tires of heavy pneumatic rollers with soapy water when required to prevent the HMA from sticking to tires during rolling. Rollers are prohibited to stand on finished courses until the courses have thoroughly cooled. The minimum number of rollers furnished for each mechanical spreader is to be one three-wheel roller and one tandem roller. Furnish additional rollers if HMA density specified is not obtained. Compact places inaccessible to rollers thoroughly with hot hand-tampers. For final rolling, use steel wheeled rollers.

3.5.2 Correcting Deficient Areas

Remove HMA that has become contaminated or defective. Skin patching of an HMA area that has been rolled is prohibited. Cut holes the full thickness of the course where the sides are perpendicular and parallel to direction of traffic and the edges are vertical. Place HMA in holes in sufficient quantity that the finished surface conforms to the specified grade and smoothness requirements. Compact HMA to the specified density.

3.6 JOINTS

Make cold joints, regardless of their nature, to ensure a continuous bond between the previously placed pavement and newly placed HMA course. Rollers are to pass over the unprotected end of a newly placed strip only when placement is discontinued, or delivery of the mixture is interrupted to the extent that the material in place has become cold. In all cases, prior to continuing placement, the edge of a previously placed course or pavement is to be cut back 3 inches to expose an even vertical edge of full thickness of the course or pavement. Remove and dispose of the cutback material. Place tack coat in accordance with Section 32 12 10 TACK COAT on the cut edge before placing the HMA course. Continue the placement of a strip by positioning the mechanical spreader on the transverse joint such that sufficient HMA will be spread to obtain a joint after rolling that conforms to the specified density, grade, and smoothness. All joints are to have the same texture, density, and smoothness as the other sections of the course.

Clean vertical edges coated by dust, sand, or other objectionable material by brushing or by cutting back. Place each course so that joints will be offset from underlying joints by at least 24 inches.

3.7 GRADES AND FINISHED SURFACE REQUIREMENTS

The finished surface of the HMA surface course is to conform to the grades (elevations) and cross sections indicated on the plans and any approved Government deviations. The finished surface course is to match the finished surface of adjacent and abutting pavements and features, as applicable.

Deviations from the indicated plans grades and cross sections is allowed with approval from the Government in areas where deviations are required for the proper functioning of drainage and other features.

SECTION 32 12 16 Page 7

Grades of the finished surface course are to be determined by running level lines with a 10-foot straightedge at intervals of 25 feet or less longitudinally and transversely. The finished surface is to have no abrupt changes of 1/4 inch or more and the surface is to be within the tolerances of 1/4 inch in both the longitudinal and transverse directions when tested with a 10-foot straightedge. If abrupt changes exist or the tolerances are not met, re-work the finished surface to correct the deficiencies.

Perform all surface testing in the presence of the Government. Diamond grinding may be used to remove high areas to meet grade requirements. Skin patching for correcting low areas and milling for correcting high areas is prohibited.

1.4 PROTECTION OF HMA PAVEMENT

After final rolling, vehicular traffic of any kind is prohibited from driving on the HMA pavement surface until the surface has cooled to 140 degrees F.