Wisconsin WisDOT Standard Specifications (within FDM) — Section 465

Effective with the December 2018 Letting 188 2019 Standard Spec ifications Section 465 Asphaltic Surface

465.1Description

(1)This section describes constru cting asphaltic surface for new construction including pavement, safety

islands, curb, rumble strip, and flumes. This section also desc ribes using asphaltic surface for patching, detours, and temporar y construction. The department w ill designate work under the bid items in this section only if the QMP provisions specified for HMA pavements under 460 are not required.

465.2Materials

(1)Under the Asphaltic Surface, Asphaltic Surface Detours, and As phaltic Surface Patching bid items;

submit a mix design. Furnish asp haltic mixture meeting the requ irements specified for either type LT or MT mix under 460.2 ; except the engineer will not require the contractor to confor m to the quality management program specified under 460.2.8.

(2)Under the other 465 bid items, the contractor need not submit a mix design. Furnish aggregates mixed

with a type AC asphaltic material. Use coarse and fine mineral aggregates uniformly coated and mixed with the asphaltic material i n an engineer-approved mixing plan t. The contractor may include reclaimed asphaltic pavement materials in the mixture. 465.3 Construction 465.3.1 General

(1)Prepare the foundation as specified for asphaltic surfacing in 211.

(2)Place using engineer-approved ma chine methods wherever practicable. Except for the surfacing bid

items, the contractor may place material by engineer-approved h and methods. Regardless of the placement technique, spread and sh ape the material to the requi red contour without segregation.

(3)Immediately after placement, compact the mixture to produce a dense smooth surface using ordinary

compaction procedures as specified in 450.3.2.6 except as follows: - Compact safety islands as the engineer directs. - Compact flumes using compac tors, tampers, or rollers. - Compact curb as specified in 465.3.2 .

(4)Ensure that the finished surfac e is smooth and contoured as th e plans show or engineer directs.

(5)Under the Asphaltic Surface, Asphaltic Surface Detours, and As phaltic Surface Temporary bid items;

straightedge the surface. Provi de a finished surface with no variation greater than 1/4 inch in 10 feet. Remove and replace out-of-tolerance material or correct the surface using engineer-approved methods. 465.3.2 Asphaltic Curb

(1)Construct asphaltic curb in one layer on a prepared asphaltic pavement or base foundation. Clean the

pavement surface area the curb will occupy to ensure a good bon d. Apply a tack coat to the area as the engineer directs.

(2)The contractor may place the cu rb by one of the following meth ods:

- With an engineer-approved curb laying machine that places and compacts the mixture and finishes the curb to the required shape , grade, and d imensions. - In forms fabricated to the curb shape. Place and thoroughly compact the mixture with vibratory compactors or mechanical tampers and screed to a smooth finish. - For small quantities, by hand placing and shaping. Form the b ack of the curb. Place, tamp, and shape with hand tools. Provide a smooth-finished surface on the curb face and top. 465.3.3 Rumble Strips

(1)Construct asphaltic rumble str ips by milling the asphaltic surface. Use a rotary head milling machine

with a cutting tip pattern that will produce a relatively smoot h cut of the size, shape, spacing, and smoothness the plans show. Cutti ng heads shall be on a suspensi on independent from the power unit to allow the heads to self-align with slopes and irregularities . The machine shall have a guidance system that consistently provi des the plan alignment of the rum ble strips.

(2)Before beginning the work, demonstrate to the engineer that th e operation achieves the desired

surface inside each depression without tearing or snagging the asphaltic pavement or surfacing. Place rumble strips in the pattern and shape the plans show. For shou lders carrying temporary traffic during construction, do not install rumble strips until after routing traffic back to the mainline.

(3)At the end of each work day, move equipment and material out of the clear zone and sweep or

vacuum the traveled way pavement and shoulder areas. Sweep away or vacuum up milling debris

Effective with the December 2018 Letting 189 2019 Standard Spec ifications before opening adjacent lanes to traffic. Dispose of waste material as specified in 203.3.4 ; do not place on the finished shoulder surface. 465.3.4 Maintenance

(1)Maintain work done under the Asphaltic Surface Temporary bid item for the time the contract specifies.

465.4Measurement

(1)The department will measure the As phaltic Surface bid items by the ton acceptably completed using

the methods specified in 450.4 . The department will not measure as phaltic materials separately.

(2)The department will measure Asphal tic Curb by the linear foot acceptably completed, measured along

the base of the curb face.

(3)The department will measure Asphaltic Flumes and Asphaltic Int ersection Rumble Strips by the

square yard acceptably completed.

(4)The department will measure the Asphaltic Shoulder Rumble Stri ps bid items and Asphaltic Centerline

Rumble Strips 2-Lane Rural by the linear foot acceptably comple ted, measured as the length along each side of the traveled way, fr om the center of the first gro ove in a segment to the center of the last groove in that segment. A segment is a series of grooves including 50-foot and shorter gaps as well as skips the plans show. Gaps greater than 50 feet define a new se gment. The department will deduct for skips greater than the plans show.

465.5Payment

(1)The department will pay for measured quantities at the contrac t unit price under the following bid

items: ITEM NUMBER DESCRIPTION UNIT

465.0105 Asphaltic Surface TON

10 Asphaltic Surface Patching TON

15 Asphaltic Surface Detours TON

20 Asphaltic Surface Driveways and Field Entrances TON

25 Asphaltic Surface Temporary TON

465.0305 Asphaltic Surface Safety Islands TON

10 Asphaltic Curb LF

15 Asphaltic Flumes SY

465.0400 Asphaltic Shoulder Rumble Strips LF

25 Asphaltic Shoulder Rumble Strips 2-Lane Rural LF

50 Asphaltic Intersection Rumble Strips SY

75 Asphaltic Centerline Rumble Strips 2-Lane Rural LF

(2)Payment for the Asphaltic Surf ace bid items is full compensati on for submitting an asphaltic mixture

design; for preparing the foundatio n; for providing the asphaltic mixture, including asphaltic material and reclaimed asphaltic pavement materials; and for compacting the mixture.

(3)Payment for Asphaltic Surface Te mporary is also full compensation for maintenance during the time

the contract specifies.

(4)Payment for Asphaltic Curb is fu ll compensation for providing the asphaltic mixture, including asphaltic

material and reclaimed asphaltic pavement materials; for compac ting the mixture; and for forming the curb.

(5)Payment for Asphaltic Flumes is full compensati on for preparin g the foundation; fo r providing the

asphaltic mixture, including asph altic material and reclaimed a sphaltic pavement materials; and for compacting the mixture.

(6)Payment for the Asphaltic Shoulde r Rumble Strips bid items, As phaltic Centerline Rumble Strips 2-

Lane Rural, and Asphaltic Intersection Rumble Strips is full co mpensation for milling; for sweeping or vacuuming; and for disposing of waste materials.

Effective with the December 2018 Letting 190 2019 Standard Spec ifications Section 475 Seal Coat

475.1Description

(1)This section describes applyi ng asphaltic material and an aggregate cover on a previously completed

surface.

475.2Materials

(1)Furnish asphaltic materials for seal coat conforming to 455.

(2)Furnish aggregates conforming to 460 except as follows:

1.Aggregate retained on the No . 4 sieve shall have 10 percent , by weight, or less flat & elongated pieces

based on a 5:1 ratio.

2.The percent wear, measured according to AASHTO T96, shall n ot exceed 40 after 500 revolutions.

3.At least 60 percent, by co unt, of the aggregate retained on the No. 4 sieve shall have one or more

fractured face.

4.Conform to the following gradation requirements:

SIEVE PERCENT PASSING BY WEIGHT 1/2-inch 100 No. 4 0-60 No. 16 0-5

475.3Construction

475.3.1 General

(1)Construct seal coat to the full width of the existing surface unless the contract or engineer specify

otherwise. Use asphaltic material of the type and grade the spe cial provisions designate. Apply at the plan rate.

(2)Apply asphaltic material only if the air temperature is 60 F o r more, and the surface is clean and dry.

Do not apply before impending ra ins if rain might damage the ma terial before placing and rolling the cover aggregates. Limit the surface area treated with asphaltic material in a single day to what can be covered with aggregate and rolled during daylight hours. 475.3.2 Equipment

(1)Provide equipment to heat and dist ribute asphaltic material as specified for applying tack coat in

455.3.2.2 .

(2)Provide additional equipment as follows:

- Power broom. - Mechanical spreader capable o f applying aggregat e uniformly a t the plan rate. - Self-propelled steel-wheel roller weighing between 6 and 9 to ns. - Self-propelled, pneumatic-tire roller.

(3)Use pneumatic-tire rollers wit h tires on one axle arranged to cover the spaces between tires on the

other axle. Ensure that all tires are the same size and uniformly inflated. During roller operation, ensure that the wheel load and tire contact pressure is 30 psi or greater, unless t he contract specifies otherwise. If the engineer requests, furnish manufacturer docum entation showing the contact areas and contact pressures for various wheel loadings and tire inflation pressures.

(4)Ensure rollers are in good mech anical condition, capable of operating both forwards and backwards,

and the operating mechanism allo ws for starting, stopping, or r eversing direction in a smooth manner, without loosening or distorti ng the surface being rolled.

(5)Equip rollers with a drum or ti re lubricator. Do not lubricate with petroleum or tar products.

475.3.3 Preparing the Surface

(1)Immediately before applying t he asphaltic material, clean the existing surface with a power broom or

other suitable equipment to remov e dirt, clay, or other objecti onable matter. 475.3.4 Heating and Applying Asphaltic Material

(1)Heat and distribute asphaltic material as specified for applyi ng tack coat in 455.3.2. Cover previously

applied material as required to c reate transverse joints withou t overlapping. Close treated areas to traffic until after applying the cover aggregate. 475.3.5 Applying and Rolling Aggregate

(1)After the asphaltic material dev elops sufficient tackiness, sp read aggregate uniformly over the treated

surface. Dry or moisten the aggregate to ensure that it is damp to surface dry. If t he engineer directs, moisten the aggregate to control dust. The engi neer will determ ine the appropriate application rate to

Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 197–198 of 601.

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460 Hot Mix Asphalt Pavement

475 Seal Coat