Art. 440.08 Hot-Mix Asphalt Pavement (Full-Depth) on Rubbilized PCC
440.08 Basis of Payment. This work will be paid for at the contract unit price
per square yard (square meter) for PAVEMENT REMOVAL, DRIVEWAY PAVEMENT REMOVAL and PAVED SHOULDER REMOVAL; at the contract unit price per square yard (square meter) for HOT-MIX ASPHALT SURFACE REMOVAL, of the thickness specified; at the contract unit price per foot (meter) for CURB REMOVAL, GUTTER REMOVAL, COMBINATION CURB AND GUTTER REMOVAL, and PAVED DITCH REMOVAL; and at the contract unit price per square foot (square meter) for SIDEWALK REMOVAL, MEDIAN REMOVAL and MEDIAN REMOVAL PARTIAL DEPTH. SECTION 441. HOT-MIX ASPHALT PAVEMENT (FULL-DEPTH) ON RUBBILIZED PCC
441.01 Description. This work shall consist of constructing hot-mix asphalt
(HMA) pavement (full-depth) on a rubblized portland cement concrete (PCC) pavement.
441.02 Materials. Materials shall be according to Article 407.02, except as
follows. Item Article/Section
a.Coarse Aggregate (Note 1) ................................................................ 1004.01
b.Hot-Mix Asphalt (Note 2) ........................................................................ 1030 Note 1. Coarse aggregate used for patching or to repair areas of the rubblized pavement shall be a Class D quality or better crushed stone, crushed concrete, or crushed gravel meeting a CA 6 or CA 10 gradation. Note 2. HMA used for patching or to repair areas of the rubblized pavement shall be the same binder mixture used for the first lift of the HMA pavement.
441.03 Equipment. Equipment shall be according to the following.
Item Article/Section
a.Vibratory Roller (Note 1) .................................................................... 1101.01
b.Pneumatic-Tired Rollers (Note 2) ...................................................... 1101.01
c.Z-Pattern Steel Grid Roller (Note 3)
d.Multi-Head Breaker (Note 4)
e.Resonant Breaker (Note 5) Note 1. The vibratory roller shall have two steel drums and a minimum gross weight of 10 tons (9 metric tons). Note 2. The pneumatic-tired rollers shall develop a compression of not less than 300 lb/in. (50 N/mm), nor more than 500 lb/in. (90 N/mm), of width of the tire tread in surface contact. Note 3. The Z-pattern steel grid roller shall consist of a self-contained, self- propelled vibratory steel wheel roller with a Z-pattern grid cladding mounted Hot-Mix Asphalt Pavement (Full-Depth) on Rubbilized PCC Art. 441.04 transversely to the surface of the drum. The vibratory roller shall have a minimum gross weight of 10 tons (9 metric tons). Note 4. When the multi-head breaker (MHB) is used, a Z-pattern steel grid roller shall be used for additional particle break down. The MHB shall consist of a self-contained, self-propelled MHB. Hammer heads shall be mounted laterally in a single row or in pairs with half the hammers in a forward row, and the remainder diagonally offset in a rear row so there is continuous pavement breaking from side to side. This equipment shall have the capacity of rubblizing pavement up to 13 ft (4 m) in width, in a single pass. Hammer drop height shall have the ability to be independently controlled. Note 5. The resonant breaker shall consist of a self-contained, self- propelled resonant frequency pavement breaking unit capable of producing low amplitude, 2000 lb (8800 N) blows, at a rate of not less than 44 blows per second. CONSTRUCTION REQUIREMENTS
441.04 General. Underdrains, french drains, and other work requiring
excavation below the pavement shall be completed prior to beginning this work. Rubblizing shall commence after removal of any existing HMA overlay in the area to be rubblized is completed according to Section 440. Any HMA overlay left on the pavement (after the milling process) shall be removed to the satisfaction of the Engineer prior to rubblizing. The Engineer will evaluate the condition of the existing pavement after removal of the existing HMA to determine if repairs are required in preparation for pavement breaking. Existing pothole patching material, partial-depth HMA patches, and PCC patches shall be left in place. Existing full-depth HMA (Class D) patches in good condition shall be left in place. Class D patches in poor condition shall be removed and replaced according to Section 442 with the type of patch, or patch material, specified in the following table. Replacement of Class D Patches 1/ Traffic Condition During Patching Patch Size Replacement Patch Type / Material Open to Traffic n/a Class C or Class D Closed to Traffic > 10 sq ft (1 sq m) Class D ≤ 10 sq ft (1 sq m) Class D or Coarse Aggregate 2/ 1/ During patch replacement, the Engineer will evaluate the subbase/subgrade and direct the removal and disposal of unstable materials and the method of replacement. Art. 441.04 Hot-Mix Asphalt Pavement (Full-Depth) on Rubbilized PCC 2/ The coarse aggregate shall be compacted to the satisfaction of the Engineer. Full lane width, Class D patches greater than 20 ft (6 m) in length shall not be impacted by the breaking equipment. All other patches and pothole repairs shall be rubblized with the pavement. If HMA patches prevent satisfactory breaking of the pavement, a skid steer loader with jackhammer attachment or similar equipment, shall be used to complete the breaking in these areas. PCC pavement or other PCC appurtenances to remain in place shall be severed from the pavement prior to rubblization with a full-depth saw cut. Reinforcement shall be left in place, except reinforcement projecting from the surface after breaking or compaction shall be cut off below the surface and removed. Loose joint fillers, expansion material, or other similar items shall also be removed. Underground utilities and drainage structures shall be protected during rubblizing; and when necessary, alternate breaking methods that will result in pieces at the surface having a top size between 12 and 18 in. (300 and 460 mm) shall be used.
441.05 Pavement Breaking. Above the reinforcing steel or upper one-half of
the pavement, the equipment shall break the pavement such that at least 75 percent of the pieces are 3 in. (75 mm) or smaller with the remaining portion below a top size of 9 in. (225 mm). Below the reinforcing steel or in the lower one-half of the pavement, at least 75 percent of the pieces shall be 9 in. (225 mm) or smaller with the remaining portion below a top size of 12 in. (300 mm). Concrete to steel bond shall be broken. Uniform breaking shall be maintained through successive passes of the breaking equipment. Breaking shall be accomplished only by the method specified on the plans and defined as follows.
a.Method I – This method uses the MHB and Z-pattern steel grid roller to break the pavement.
b.Method II – This method uses the resonant breaker to break the pavement. The resonant breaker utilizes high floatation tires, which shall be maintained less than 60 psi (415 MPa). The breaking shall begin at the centerline and proceed to the edge of the pavement.
c.Method III – This method uses the resonant breaker to break the pavement without restriction on tire pressure.
d.Method IV – This method uses either the MHB with Z-pattern steel grid roller or the resonant breaker to break the pavement. Prior to the acceptance of the proposed breaking procedure, the Contractor shall complete a strip for evaluation by the Engineer. To ensure the pavement is being broken to the specified dimensions, the Contractor shall excavate a broken area of 10 sq ft (1 sq m), in two separate locations during the first day of breaking, as directed by the Engineer. Modifications to the breaking procedure shall be made if the size requirements are not met. These excavations may be repaired with coarse Hot-Mix Asphalt Pavement (Full-Depth) on Rubbilized PCC Art. 441.07 aggregate. If breaking procedures or conditions change, additional excavations to inspect the broken pavement dimensions shall be made, as directed by the Engineer. Large concrete pieces resulting from inadequate breaking shall be treated as follows. Size and Location of Pieces Action Greater than 9 in. (225 mm) at surface of broken pavement Reduce to a top size of 9 in. (225 mm) or remove and replace Greater than 12 in. (300 mm) below steel or lower 1/2 of broken pavement Reduce to a top size of 12 in. (300 mm) or remove and replace Unsuitable or unstable material encountered during the breaking process shall be removed and disposed of according to Article 202.03. Areas of 10 sq ft (1 sq m) or less shall be repaired with coarse aggregate. Larger unstable areas may utilize a modified rubblization pattern as shown on the plans. Following subgrade repairs, HMA binder mixture shall be placed to the depth of the original PCC pavement, and compacted to the satisfaction of the Engineer.
441.06 Compaction. The full width of the broken pavement shall be
compacted according to the following sequence. Compaction Sequence Stage Rollers / Minimum Passes After Pavement Breaking Step 1: 4 passes with a Z-pattern steel grid roller 1/ Step 2: 4 passes with a vibratory roller Step 3: 2 passes with a pneumatic-tired roller Ahead of HMA Placement Step 1: 2 passes with a vibratory roller 1/ Step 1 is only required when a multi-head breaker is used. The Contractor shall not trim, or otherwise attempt to grade, the broken pavement to improve grade lines. Unstable material encountered while compacting or under construction trafficking shall be treated as defined in Article 441.05. If a large area of unstable material is identified during the rubblizing process, work shall be halted and the Engineer notified. Depressions greater than 2 in. (50 mm) in depth shall be filled with coarse aggregate and compacted.
441.07 Protection. Traffic shall not be allowed on the rubblized pavement
before all lifts of HMA binder are in place, except necessary construction traffic at crossovers and/or access points. Necessary construction traffic shall be limited to delivery of materials for repairs, patching, and paving. Rubblized crossovers and/or access points shall not be used for more than 24 hours immediately prior to HMA binder placement and shall be maintained in an equal or better compacted state as the other areas. Art. 441.08 Hot-Mix Asphalt Pavement (Full-Depth) on Rubbilized PCC Rubblized pavement less than or equal to 10 sq ft (1 sq m) dislodged by traffic shall be repaired with coarse aggregate and compacted prior to the paving operation. Rubblized pavement greater than 10 sq ft (1 sq m) dislodged by traffic shall be repaired with HMA.
441.08 Pavement Placement. The HMA pavement (full-depth) shall be
constructed according to Articles 407.03, 407.04, 407.06, 407.08, 407.09, and 407.10, except as follows. A tracked paver shall be used to place the first lift of binder within 48 hours of the pavement breaking operation. If rain occurs prior to paving, the rubblized pavement shall be allowed to dry and become stable before the paving operation begins or resumes.
441.09 Method of Measurement. This work will be measured for payment as
follows.
a.Contract Quantities. The requirements of the use of contract quantities shall conform to Article 202.07(a) of the Standard Specifications.
b.Measured Quantities. Rubblizing will be measured for payment in place and the area computed in square yards (square meters). HMA pavement (full-depth), tack coat, full lane sealant (FLS), and longitudinal joint sealant (LJS) will be measured for payment according to
Article 407 — 11.
441.10 Basis of Payment. This work will be paid for at the contract unit price
per square yard (square meter) for RUBBLIZING PORTLAND CEMENT CONCRETE PAVEMENT, of the method specified. Removal and replacement of unstable material, patching, and repair of the rubblized pavement with either coarse aggregate or HMA, will be paid for according to Article 109.04. HMA pavement (full-depth), tack coat, full lane sealant (FLS), and longitudinal joint sealant (LJS) will be paid for according to Article 407.12. Pavement Patching Art. 442.02 SECTION 442. PAVEMENT PATCHING
442.01 Description. This work shall consist of the removal of the existing
pavement, the necessary excavation and the replacement with the class and type of patch specified at designated locations. This work will be classified as follows. Class A Patches: Pavement Removal and Continuously Reinforced Portland Cement Concrete Replacement Class B Patches: Pavement Removal and Portland Cement Concrete Replacement Using Dowels or Tie Bars Class C Patches: Pavement Removal and Portland Cement Concrete Replacement Class D Patches: Pavement Removal and Hot-Mix Asphalt (HMA) Replacement Pavement Patching: Contractor's Option of Class C or Class D For each of the above classifications, the work on a lane width or less shall be further quantified by size as follows. Type I Less than 5 sq yd (5 sq m) Type II 5 sq yd (5 sq m) or more, but less than 15 sq yd (15 sq m) Type III 15 sq yd (15 sq m) or more, but less than 25 sq yd (20 sq m) Type IV 25 sq yd (20 sq m) or more
442.02 Materials. Materials shall be according to the following.
Item Article/Section
a.Portland Cement Concrete (Note 1) ....................................................... 1020
b.Concrete Reinforcement Bars, Welded Wire Reinforcement, and Strand ..................................................................................... 1006.10
c.Dowel Bars and Dowel Bar Assembly ............................................... 1006.11
d.Preformed Expansion Joint Fillers ..................................................... 1051.09
e.Preformed Fiber Joint Filler ............................................................... 1051.04
f.Hot-Mix Asphalt (HMA) (Note 2) ............................................................. 1030
g.Nonshrink Grout ................................................................................. 1024.02
h.Hot-Poured Joint Sealer .................................................................... 1050.02
i.Backer Rod (Note 3)
j.Material for Forming Joint Grooves (Note 4)
k.Chemical Adhesive Resin System ..................................................... 1027.01
l.Calcium Chloride ............................................................................... 1013.01
m.Grout .................................................................................................. 1024.01
n.Straw ........................................................................................ 1081.06(a)(1) Note 1. When patching ramp pavements and two-lane pavements with two- way traffic, Class PP-2, PP-3, PP-4, or PP-5 concrete shall be used for
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Source: Illinois Standard Specifications for Road and Bridge Construction, 2022 Edition. Pages 283–288 of 1,217. View official source ↗