272 Department with a 10 ft straightedge transversely. The 16 ft straightedge shall be in accordance with 306.03(d). The 10 ft stra ightedge will be in accordance with 306.03(d). Joints shall be in accordance with 503, except for the following: 30
a.the second saw cut and sealing shall not be performed for transverse joints;
b.sealing shall not be performed for longitudinal joints; and (c) sawing and sealing shall not be performed for construction joints.
305.04 Existing PCCP
Preparation of PCCP for use as a base sh all be in accordance with 507, except for:
a.Patching Patching PCC base shall be in accordan ce with 506 except the coarse aggregate shall be Class A or higher.
b.Surface Milling Surface milling shall be in accordance with 306.
c.Retrofit Load Transfer Retrofit load transfer shall be in accordance with 507.08.
d.Rubblizing Existing PCCP The existing pavement shall be rubblized with a self-contained, self-propelled, resonant frequency pavement breaking unit capable of producing low amplitude, 2,000 lbf blows at a rate of not less than 44 per second or with a self-contained, self-propelled, multiple headed, impact hammer with the heads directly adjacent to each other and the lift height of each head independently adjustable. The sequence of impacts shall be on a random basis. The unit shall be equipped with a water system to suppress dust generated by the operation. The operating speed of the unit shall be such that the existing pavement is reduced 60 to particles ranging from sand sized to pieces not exceeding 6 in. in the largest dimension, the majority being a nominal 1 to 2 in. in size. The concrete from the surface to the top of the reinforcement shall be reduced to the 1 to 2 in. size to the fullest extent possible. Continuous cove rage, overlapped if necessary, with the breaking shoe or impact hammers shall be used. Additional passes of the resonator or multiple headed impact hammer may be required if larger sizes remain above the reinforcement. Subsurface drains shall be installed along the edges of the pavement prior to the rubblization. 70 305.04 273 Rubblizing shall begin at the edge of pavement and proceed to the center of the pavement. The rubblization of the first lane shall extend 6 in. into the adjoining lane. Prior to placing HMA mixtures, the complete width of the rubblized pavement shall be compacted by means of vibratory steel wheel and pneumatic-tired rollers in accordance with 409.03(d) in the following sequence: two initial passes with a vibratory roller, two passes with a pneumatic-tired roller, and then four final passes with a vibratory roller. The last two roller passes shall be immediately prior to priming operations. When the multiple headed impact hammer is used, a Z-pattern grid 80 cladding bolted to the surface of the drum of the vibratory roller shall be used at least for the final two passes. The vibratory roller shall be operated in the vibration mode at a speed not to exceed 6 ft per s. All depressions 1 in. or gr eater in depth from that of the immediate surrounding area that result from the rubblizing or compaction effort shall be filled with coarse aggregate No. 53 or 73 and struck off level with the surrounding area. Filled depressions shall be compacted with the same roller and compactive effort previously described. 90 Reinforcement in the rubblized pavement shall be left in place. Any reinforcement protruding above the surface as a result of rubblizing or compac tion operations shall be cut off below the surface and removed from the site. All loose joint fillers, expansion material, or other similar materials shall also be removed from the rubblized surface. Traffic will not be allowed on the rubblized pavement before the HMA base or immediate courses are in place unless ot herwise directed. Rubblized material dislodged by traffic shall be removed from the pavement. The initial HMA course shall be placed within 48 h of rubblizing. However, in the event of ra in, this tim e limitation 100 may be waived to allow sufficient time for the rubblized pavement to dry to the satisfaction of the Engineer. Crossover and ramp crossings shall be maintained in the same compacted state as other areas un til the initial HMA course is placed. The preceding rubblizing operations shall be scheduled after widening or shoulder work has progressed up to the elevation of the existing pavement grade. These areas may then be utilized to support the breaking unit while the existing pavement is being rubblized. Shoulders may then be comple ted in conjunction with the placement of HMA pavement courses over the compacted rubblized pavement. A joint shall be saw cut full depth or load transfer devices shall be severed at an existing joint on ramps or mainline where the rubblizing abuts concrete pavement to remain in place.
305.05 Widening with PCC Base
The subgrade shall be prepared in accordance with 207. Subbase shall be in accordance with 302. 305.05 274 The concrete shall be placed directly ag ainst the existing pavement edges, which shall be free from all foreign materials. Th e surface of the concrete widening shall be 120 at the same elevation as the top of the existing concrete base. Materials and construction requirements shall be in accordance with the applicable requirements of 502, except the following: (a) coarse aggregate shall be Class A or higher;
b.joints shall be sawed in one pass and not sealed. Transverse joints constructed in the widening shall be aligned with existing transverse joints or cracks; 130
c.tining is not required;
d.shoulder corrugations are not required;
e.pavement smoothness shall be controlled by a 16 ft straightedge; and
f.utilization of the Department provided spreadsheet is not required. When the widening is closed to traffic prior to placing the overlay, liquid 140 membrane compounds shall not be used and an alternative curing option shall be used. Tack coat in accordance with 406 may be used as a curing option.
305.06 Method of Measurement
Compacted aggregate will be measured by the ton in accordance with 109.01(b) for the type specified. Retrofit load transf er will be measured in accordance with
507.09 Surface milling will be measured in accordance with 306.10. PCC base, PCC
base patching, and widening with PCC base will be measured by the square yard of the thickness specified. The area of PCC will be the planned width of the base, patching, or widening multiplied by the measured length, or as directed in writing. The 150 planned width of the base, patching and widening will be as shown on the typical cross-sections of the plans. Rubblized PCCP will be measured by the square yard of rubblized pavement.
305.07 Basis of Payment
The accepted quantities of compacted aggregate will be paid for in accordance with 303.10, for the type specified, complete in place. Retrofit load transfer will be paid for in accordance with 507.10. Surface milling 160 will be paid for in accordance with 306.11. PCC base, PCC base patching, and widening with PCC base will be paid for at the contract unit price by the square yard of the thickness specified. 305.06 Rubblized PCCP will be paid for at the contract unit price per square yard for rubblized pavement. Payment will be made under: 170 Pay Item Pay Unit Symbol PCC Base, __________ in. ........................................................ SYS thickness PCC Base Patching, __________ in. ......................................... SYS thickness Rubblizing PCCP ...................................................................... SYS Widening with PCC Base, __________ in. ............................... SYS thickness If PCC base is found to be deficient in thickness, price adjustments in accordance with 502.23 will be determined. The cost of excavation, disposal of existing materials, preparation of subgrade, and subbase required for the PCC base widening shall be included in the cost of widening with PCC base. The cost of excavation, disposal of existing materials, preparation of subgrade, and subbase required for PCC base patching shall be included in the cost of PCC base patching. 190 Replacement of pavement damaged by the Contractor’s operations shall be without additional payment. The cost of furnishing all labor, materi als, and equipment necessary to rubblize, suppress dust, cut and remove exposed reinforcement, cut and remove joint fillers or similar materials, saw cutting of the pavement, severing existing joints, compacting and maintaining the compacted condition of the rubblized pavement shall be included in the cost of rubblized PCCP. 200 The cost of furnishing, hauling, placing, leveling, and compacting the aggregate to fill depressions in the rubblized PCCP shall be included in the cost of coarse aggregate No. 53 or 73. Furnishing and operating the 16 ft straight edge shall be included in the cost of other pay items within this section. 305.07
Source: Indiana Standard Specifications, 2024 Edition. Pages 287–290 of 1,248.