Amend Section 412 – Paving Fabric to read as follows:
“SECTION 412 PAVING FABRIC
412.01Description. This work includes furnishing and placing paving fabric and asphalt cement between pavement layers.over an existing pavement before the laying of resurfacing materials according to the contract.
412.02Materials. Materials shall meet the following:
Asphalt Cement (PG 64-16)702.01
Paving Fabric716.04
412.03Construction Requirements.
(A)Weather Limitations. Application of asphalt cement will not be allowed under the following conditions:
(1)On wet surfaces, as determined by the Engineer.
(2)When air temperature is below 60 degrees F and falling. Asphalt cement may be applied when air temperature is above 50 degrees and rising. Air temperature will be measured in shade and away from artificial heat.
(3)When weather conditions prevent proper method of construction.
(B)Equipment. Provide equipment for heating and distributing asphalt cement according to Subsection 407.03(B) - Equipment.
(CA)Surface Preparation. of Roadway Surface. Immediately before applying the asphalt cement, binder, clean the Contractor shall sweep the surface in accordance with Section 310 – Brooming Off.clean of loose material, water, dirt, excess dust or other objectionable matter.
Clean cracks and joints with compressed air. Seal cracks and joints wider than 3/8 inch with sand slurry consisting of 20 percent CSS-1 emulsified asphalt, approximately 2 percent portland cement, water, and blending sand.
Clean potholes and other surface defects and fill with Hot Mix Asphalt Pavement, Mix V.
(B)Cracks and Depressions. The Contractor shall fill the cracks and depressions with asphalt concrete pavement Mix No. V, and as ordered by the Engineer.
(DC)Application of Asphalt Cement Binder. Protect all structures, including guardrails, guardrail post, and other appurtenances, from asphalt cement splatter.Before applying the asphalt cement binder, the Contractor shall clean the area according to the contract.
Apply asphalt cement to cover area of paving fabric plus 3 inches on each side.
Limit asphalt cement application only to areas that can be immediately covered with paving fabric and that can be paved on same day. Do not allow asphalt cement to chill, set up, dry, or otherwise impair placement of paving fabric.
The Contractor shall apply Apply the asphalt cement binder at the rate of 0.25 0.20 to 0.30 gallons asphalt per square yard or as recommended by the paving fabric manufacturer., and accepted by the Engineer. Temperature of asphalt cement at time of spraying shall be between 290 degrees F and 325 degrees F.The Contractor shall spray the asphalt with a suitably metered mobile bituminous distributor conforming with Subsection 405.03(B) Equipment and a compatible equipment for heating bituminous material. The temperature of the asphalt cement at the time of spraying shall be greater than two hundred ninety degrees Fahrenheit (290O F.) but shall not exceed three hundred twenty degrees Fahrenheit (320O F.)
The width of the asphalt cement binder shall be the fabric width plus six (6) inches. The Contractor shall apply the asphalt cement binder no further in advance of the fabric placement than the Contractor can keep traffic free.
(D)Paving Fabric Placement. Before asphalt cement has cooled and lost its tackiness, place fabric onto asphalt cement, with heat-bonded side up and with minimum wrinkling or folding.When the asphalt cement binder has cooled to a temperature of two hundred fifty degrees Fahrenheit (250O F.), the method of fabric placement shall be such that wrinkles and/or folds shall not be excessive. The Contractor shall place the fabric, with the heat bonded side facing up, onto the asphalt cement binder as soon as possible before the asphalt cools and loses tackiness. The Engineer will require miscellaneous equipment such as brooms and knives.
Slit, lay flat, and tack all wrinkles or folds 1/2 inch or more in height. Broom or roll paving fabric to remove air bubbles and maximize fabric contact with pavement surface.
Overlap fabric 6 inches at joints. Do not lap joint with more than two layers of fabric. Shingle transverse joints in direction of paving. Apply asphalt cement to fabric joints at rate of 0.2 gallons per square yard, or as recommended by paving fabric manufacturer.
Construction equipment or vehicular traffic will not be allowed directly on paving fabric.
Remove and replace damaged paving fabric at no additional cost to the State.
If the fabric folds exist or wrinkles half (1/2) inch in height or greater exist, the Contractor shall slit the fabric and allow the fabric to lay flat. The Engineer may require additional brooming to maximize fabric contact with the pavement. The Contractor shall remove the air bubbles to assure complete contact with the roadway surface. The Engineer will permit the seating of the fabric with rolling equipment after placing. Turning of the paving machine and other vehicles shall be gradual. The Contractor shall keep them to a minimum to avoid damage. The fabric shall overlap four (4) to six (6) inches at joints. The Contractor shall not lap the joint with more than two (2) layers of fabric. The Contractor shall shingle the transverse joints in the direction of the paving to prevent edge pickup by the paver. The Contractor shall apply the asphalt cement binder to the fabric joints at the rate of 0.2 gallons per square yard when ordered by the Engineer.
Fabrics that are damaged after being placed is the responsibility of the Contractor. The Contractor shall remove and replace them before the resurfacing.
The Contractor shall not place more fabric than the Contractor can cover with hot mix on that day. The Contractor shall pave the fabric except for overlap length with hot mix before the lanes are opened to traffic.
(F)Paving Operation. Construct hot mix asphalt overlay indicated in the contract documents in areas where fabric has been placed during same day as fabric placement.The paving operation shall closely follow the fabric placement. If the asphalt cement binder bleeds through the paving fabric prior to placement of hot mix asphalt overly, before the hot mix is placed, the Contractor shall blot asphalt cement the binder by spreading same type of hot mix asphalt mixture on affected those areas. so affected to prevent pickup by traffic driving on the fabric. Limit hot mix asphalt laydown temperature to a maximum of 325 degrees F. If paving fabric is composed of polypropoylene material, limit laydown temperature to a maximum of 300 degrees F.
412.04Method of Measurement. The Engineer will measure the paving fabric per by the square yard of fabric finished surface, not including overlaps.
The Engineer will measure hot mix asphalt overlay under Section 401 – Asphalt Concrete Pavement
412.05Basis of Payment. The Engineer will pay for the accepted quantities of paving fabric at the contract unit price per square yard., complete in place.Payment will be full compensation for the work prescribed in this section and the contract documents
The price shall be full compensation for cleaning, furnishing and applying of the asphalt cement binder, preparing the surface, filling of cracks and depressions, overlapping of the paving fabric, furnishing labor, tools, materials, equipment, and incidentals necessary to complete the work.
The Engineer will pay for the following pay item when included in the proposal schedule:make payment under:
Pay ItemPay Unit
Paving FabricSquare Yard”
The Engineer will pay for:
(1)20% of the contract bid price upon completion of preparing the surface;
(2)30% of the contract bid price upon completion of furnishing and applying the asphalt cement binder;
(3)40% of the contract bid price upon completion of furnishing and placing of the paving fabric;
(4)10% of the contract bid price upon completion of cleaning up;
The Engineer will pay for the accepted hot mix asphalt overlay under Section 401 – Asphalt Concrete Pavement.
END OF SECTION 412
(Project No.)
412-1a11/02/04