457 Retrofit tie bars shall be installed in accordance with 503 and as shown on the plans. The tolerance for horizontal and vertical translation shall be the same as for 520 dowel bars. Joint filler and grout retention rings shall be placed and installed at the pressure relief joint as shown on the plans. Oversized holes shall be drilled in the joint filler no more than 1/2 in. over the dowel bar diameter and at a spacing to match the installed dowel bars. The oversized holes are to allow a tolerance for ease of installation of the joint filler up against the sawed face without interference with the dowel bars. The joint filler shall be attach ed to the sawed face wit hout wrinkles or buckling. Joint filler material with vertical slits or cuts will be rejected. Grout retention discs 530 shall be installed to make the annular sp ace between the dowel and the oversized hole mortar-tight. The joint material may be spliced along vertical joints that are joined and sealed with tape. The joint material shall not be spliced in the horizontal direction. An alternate method of installing a joint filler that has a mortar tight seal around the dowel bar may be used if approved by the Engineer. All patches longer than 15 ft shall be placed in accordance with 502.12 and shall have joints in accordance with 503. Dowel bars shall be installed within the boundaries of the patch at a spacing as shown on the plans or as approved by the Engineer. Patches longer than 15 ft shall be finished in accordance with 504. Patches longer than 15 ft, constructed with concrete containing portland cement, shall be cured in accordance with 504.04(a) unless ambient air and concrete temperatures warrant following the requirements in 506.11. Patches constructed in accordance w ith 506.04(b) and containing CSA cement shall be water cured in accordance with 702. 22(a)1 except that soaker hoses will not be required. Water curing shall be initiated after finishing and as soon as the concrete patch can support the wet covering. Water curing shall be maintained for a minimum 550 of 1 1/2 h and shall be removed no sooner than 1 h before the patch is opened to traffic. Concrete shall be placed around manholes or similar structures in accordance with 720. Sawing and sealing of transverse joints may be omitted when the existing PCCP is to be overlaid as part of the contract. 506.12 Opening to Traffic For purposes of this section, traffic shall include construction vehicles, 560 construction equipment, and all non-construction vehicles. Any construction vehicle or equipment that may damage the PCCP shall not be used on the PCCP unless adequate protection is provided. Joint cutting saws may be operated on the PCCP as determined by the Contractor. 506.12
a.For Patches Less than or Equal to 15 ft in Length A patch may be opened to traffic in acco rdance with the following when calcium chloride is used in accordance with 506.04(a). T H HT T H HT 40 - 42°F 30 26 61 - 63°F 14 9 43 - 45°F 27 23 64 - 66°F 14 9 46 - 48°F 24 21 67 - 69°F 14 8 49 - 51°F 21 19 70 - 72°F 14 7 52 - 54°F 19 16 73 - 75°F 14 6 55 - 57°F 16 14 above 75°F 14 5 58 - 60°F 16 11 T = Lowest ambient temperature during placement, or the temperature of concrete at time of delivery, whichever is lower. H = Time in hours to open to traffic. HT = Time in hours to open to traffic when the average daily traffic is less than 10,000. PCCP patches with calcium chloride ma y be opened to traffic sooner than specified in the above table if test beams indicate a modulus of rupture of 300 psi or greater. ITM 402 may be used as an altern ative method to determine the flexural strength. When other admixtures or admixture systems are used, the PCCP patches may be opened to traffic when flexural strength tests indicate a modulus of rupture of 300 psi or greater. ITM 402 may be used as an alternate method to determine the flexural strength. 580
b.For Patches Greater than 15 ft in Length Traffic shall not be allowed on the PCCP until a modulus of rupture of 425 psi from flexural strength testi ng is achieved. The modulus of rupture will be determined by averaging two beams.
506.13 Method of Measurement
Partial depth patching and full depth patching will be measured by the square yard. D-1 contraction joints and retrofitted tie bars used in PCCP patching will be 590 measured in accordance with 503.07. When subgrade treatment is specified, it will be measured in accordance with
207.05 New subbase will be measured in accordance with 302.08. PCCP removal, subbase removal, conc rete, finishing, curing, and sawing and
sealing of joints will not be measured for payment. 506.13 Retrofit pressure relief joints, retrofit contraction joints, non-vapor barrier bonding agent, anchored dowel bars installed at the beginning and end of the patch, 600 individual dowel bars, joint fillers, joint materials, drilling holes for dowel bars, grout retention rings, and chemical anchor systems will not be measured for payment. 506.14 Basis of Payment PCCP patching will be paid for at the contract unit price per square yard for the type of patching required. D-1 contraction joints and retrofitted tie bars used in PCCP patching will be paid for in accordance with 503.08. 610 Subgrade treatment will be paid for in accordance with 207.06. New subbase will be paid for in accordance with 302.09. Partial depth patches which have been directed to be full depth will be paid for at the contract unit price per square yard for PCCP patching, partial depth, plus 80% of the contract unit price per square yard for PCCP patching, full depth. Payment will be made under: Pay Item Pay Unit Symbol 620 PCCP Patching, Full Depth ....................................................... SYS PCCP Patching, Partial Depth ................................................... SYS The cost of PCCP removal, subbase removal, concrete, finishing, curing, and sawing and sealing of joints shall be included in the cost of PCCP patching. The cost of retrofit pressure relief joints, retrofit contraction joints, non-vapor barrier bonding agent, anchored dowel bars installed at the beginning and end of the patch, individual dowel bars, joint fillers, joint materials, drilling holes for dowel bars, 630 grout retention rings, and chemical anchoring system shall be included in the cost of PCCP patching. The cost of corrections for pavement sm oothness and retexturing shall be included in the cost of PCCP patching. Repair or replacement of adjacent PC CP or shoulder damaged by the Contractor shall be made at no addition al cost to the Department. 640 506.14
Source: Indiana Standard Specifications, 2024 Edition. Pages 455–458 of 1,248.