Effective with the December 2018 Letting 188 2019 Standard Spec ifications Section 465 Asphaltic Surface
465.1 Description
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.
465.2 Materials
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 materi al. 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 practic able. 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-toleran ce 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.
465.4 Measurement
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 includ ing 50-foot and shorter gaps as well as skips the plans show. Gaps great er than 50 feet define a new se gment. The department will deduct for skips greater than the plans show.
465.5 Payment
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 465.0110 Asphaltic Surface Patching TON 465.0115 Asphaltic Surface Detours TON 465.0120 Asphaltic Surface Driveways and Field Entrances TON 465.0125 Asphaltic Surface Temporary TON 465.0305 Asphaltic Surface Safety Islands TON 465.0310 Asphaltic Curb LF 465.0315 Asphaltic Flumes SY 465.0400 Asphaltic Shoulder Rumble Strips LF 465.0425 Asphaltic Shoulder Rumble Strips 2-Lane Rural LF 465.0450 Asphaltic Intersection Rumble Strips SY 465.0475 Asphaltic Centerline Rumb le 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 compensat ion 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
475.1 Description
1.This section describes applyi ng asphaltic material and an aggregate cover on a previously completed surface.
475.2 Materials
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
475.3 Construction
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 materi al 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 tire s are the same size and uniform ly 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 infla tion 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
Referenced in this section
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Source: Wisconsin Standard Specifications for Highway and Structure Construction, 2019 Edition. Pages 197–198 of 601. View official source ↗