MDOT Standard Specifications for Construction Section 603
6-28 Section 603. Concrete Pavement Restoration
603.01. Description This work consists of restoring concrete pavement including the following:
A.Removing and repairing portions of a concrete pavement, one lane wide and 100 feet long, or less, with reinforced and non-reinforced portland cement concrete, with the type of joint required;
B.Diamond grinding and grooving portland cement concrete pavement;
C.Resawing and sealing existing pavement joints;
D.Sawing, cleaning, and sealing cracks in concrete pavements;
E.Removing sections of concrete pavement, one lane wide and greater than 100 feet long in accordance with section 204 or subsection 603.03.B.1, as determined by the Engineer; and
F.Replacing sections of concrete pavement one lane wide and greater than 100 feet long in accordance with section 602. Refer to MDOT Standard Plan R -44 series, R-45 series , and the contract for details. 603.02. Materials Provide material in accordance with the following sections : Base Course Aggregate, 4G, 21AA, 22A ............................................. 902 Curing Materials for Pavements ............................................................ 903 Insulating Blankets ................................................................................ 903 HMA Mixtures for Restoring Shoulders ................................................. 904 Steel Reinfor cement ............................................................................ 905 Joint Spall Repair Materials .................................................................. 914 Bond Breaker Material .......................................................................... 914 Epoxy Coated Dowel Bars and Deformed Tie Bars .............................. 914 Joint Materials ....................................................................................... 914 Concrete, Grades, 3500, 3500HP ....................................................... 1004 Concrete, Grade P -NC ....................................................................... 1006 Provide the concrete grade necessary to obtain the s trength specified in Table 603-1 in the anticipated curing time, as determined by the Engineer . The Engineer will not require 28-day compressive strength test cylinders for concrete pavement repairs . The Engineer will perform flexural strength testing of the field cured test specimens . Acceptance will be based on the specimens attaining the minimum flexural strength prior to opening the concrete pavement repair to vehicular traffic. MDOT Standard Specifications for Construction Section 603
6-29 Table 603- 1:
Opening to Traffic Strengths Anticipated Curing Time Concrete Grade Minimum Flexural Strength <72 hours Grade P -NC(a) 300 psi ≥3 days Grade 3500, 3500HP 550 psi
a.The Engineer may approve the use of a non- chloride Type A water reducer, a non- chloride Type C accelerating, or a Type E water -reducing and accelerating admixture from the Qualified Products List to achieve the flexural strength requirements. Provide coarse aggregate with no greater than 2.5% absorption in accordance with ASTM C127. Do not use calcium chloride admixture. 603.03. Construction
A.Equipme nt Requirements . Use equipment necessary to perform the work in accordance with section 602 and the following:
1.Drilling Machine . Use a drilling machine and use methods to drill holes in the existing pavement vertical surfaces in accordance with the followi ng:
a.Support the drill on rails that rest on the pavement surface at both ends of an 8-foot -long repair, or by other alignment methods approved by the Engineer, to ensure holes meet the requirements of MDOT Standard Plan R -44 series ;
b.Provide a drill that us es mechanically applied pressure for forward and reverse travel . Match the drill and pressure mechanism to drill the nominal depth holes to prevent cracking the concrete and spalling more than ½ inch horizontally or vertically ; and
c.Equip the drill with a snug-fitting drill guide bushing, positioned against the face of the concrete to prevent eccentricity or overriding of the holes more than 1⁄16 inch and to maintain the alignment tolerances.
2.Grout Dispenser
a.Bulk Grout Systems. Use a grout dispenser and static mixing nozzle system recommended by the grout material manufacturer . Use a machine that proportions the components, mixes the components as they are extruded through the static nozzle, and deposits the mixed material in the back of the hole. Use two bulk grout dispensers on the project or use one bulk grout dispenser and a 2 -day supply of prepackaged grout material, dispensers, and static mixing nozzles. MDOT Standard Specifications for Construction Section 603
6-30 b. Prepackaged Injection Grout Systems. Use a grout dispenser
and static mixing nozzle supplied by the manufacturer of the grout material . Use a static mixing nozzle capable of depositing grout to the back of the hole.
3.Vibratory or Roller Screeds. Use a steel -shod vibratory screed, with the weight and vibrating frequency required to screed concrete flush with the existing pavement in a single pass. Use a roller screed with the weight and speed required to screed the concrete surface flush with the existing pavement in two or more passes. Use screeds at least 6 inches longer than the width of the concrete pavement repair.
4.Diamond Grinding Equipment . Use diamond blades, spaced as required for the application, and mounted on a self -propelled machine designed for grinding and texturing pavement . Use equipment that will not cause damage to the und erlying surface of the pavement . Do not use grinding equipment that ravels or spalls the concrete pavement, fractures aggregate, or damages the transverse or longitudinal joints . Use grinding equipment that produces the required texture . To remove residue and excess water, use vacuum equipment that extracts the slurry material from the pavement and prevents dust from escaping into the air.
5.Diamond Grooving Equipment . Use diamond blades, spaced as required for the application, and mounted on a self -propelled machine with a minimum head width of 3 feet, designed for grooving pavement . Use equipment that will not cause damage to the underlying surface of the pavement . Do not use grooving equipment that ravels or spalls the concrete pavement, fractures aggregate, or damages the transverse or longitudinal joints . Grooving equipment must have sufficient power, traction, and stability and be able to achieve the specified uniform depth of cut, flush to all inlets, manholes, bridge joints, and other appurtenances within the paved area. To remove residue and excess water, use vacuum equipment that extracts the slurry material from the pavement and prevents dust from escaping into the air.
6.Equipment for Sawing and Sealing Cracks . Use equipment for sawin g and sealing cracks in accordance with subsection 602.03.A.13. Equip the saw with a diamond blade with a diameter of 8 inches or less . Do not use routers. MDOT Standard Specifications for Construction Section 603
6-31 B. Construction of Concrete Pavement Repair . Construct concrete
pavement repairs, 100 feet long, or les s, in accordance with section 602, except as modified by this subsection. Remove existing concrete pavement in sections at least 4 feet long. When the repair area is within 4 feet of an existing joint extend the repair to at least 1 foot beyond the joint . When the repair area is within 8 feet of an adjacent repair, remove the concrete pavement between the two areas, or as directed by the Engineer. Control the grades by using the adjacent pavements . If the lane adjacent to a repair area is damaged, cast the repair area and open to traffic, then perform the removal and recasting of concrete repairs in the adjacent lane. The Engineer must approve the adjacent lane repair. If the grade cannot be established by using adjacent pavements, provide grade control according to subsections 602.03 and 824.03.
1.Removing Existing Pavement (Concrete Pavement Repair)
a.Removing and Repairing Pavement Damaged by the Contractor . Do not use removal equipment that damages the concrete pavement that will remain in place. Repair spal ls caused by the Contractor’s operations in accordance with section 602 at no additional cost to the Department .
b.Planned Pavement Removal and Repair . Remove part -depth or full-depth HMA patches, included in the portion of pavement being removed, as remova l of concrete, without regard to additional effort that may be involved in the removal of dissimilar materials . Avoid disturbing the base during removal. Perform shoulder removal using the same method as concrete pavement removal. If the repair areas include repairing concrete curb, curb and gutter, or valley gutter, remove and replace the curbing adjacent to the repair and in line with the joints of the repair . If curbing removal leaves a section length, less than 6 feet from the saw cut to the neares t existing curb expansion joint, remove and replace the curb to the existing curb expansion joint . Do not begin sawing more than 2 weeks before concrete pavement removal . Make straight, transverse saw cuts, at right angles to the centerline of the concret e pavement, within 1 inch per lane width. Saw the longitudinal joint full -depth between adjacent lanes, ramps, shoulders, or curb and gutter . Use water, MDOT Standard Specifications for Construction Section 603
6-32 immediately after sawing, to flush slurry off the surface of the
pavement. Place concrete repairs the s ame day as the removal of existing concrete pavement . Remove concrete pavement between narrowly spaced saw cuts at the end of a slab with air hammers and hand tools . Except for utility cuts, install lifting devices in the slab. Lift the slab without distur bing the base. Clean the area with hand tools and remove slurry from sawed surfaces.
2.Installing Dowels or Deformed Tie Bars in Transverse Joints. Drill the vertical faces of the existing concrete pavement to allow the insertion of dowel bars or deformed ti e bars . Re-drill holes that do not meet the required depth, diameter, and alignment, as directed by the Engineer, at no additional cost to the Department. Clean drilled holes using oil -free compressed air with a minimum pressure of 90 psi . Fully insert the air wand into the holes. Fill the clean drilled holes with an adhesive grout selected from the Qualified Products List . Fill the holes with adhesive grout to their full length to ensure the adhesive grout covers the embedded length of the inserted dowel b ars or deformed bars . Slowly insert the bars into the holes using hand pressure and a twisting motion, until fully seated. Wipe away excess adhesive grout extruded around the bars . Do not proceed until the Engineer verifies the dowel bars are properly installed and the adhesive grout set. Drill or punch holes in the joint filler used for expansion joints (E rg) to match the location of the holes in the existing pavement . Drill or punch the holes in the joint filler to produce neat, clean holes without excessively tearing the filler . After anchoring the dowel bars in place, install the joint filler and position it against the existing pavement . Extend the joint filler the full -depth of the repair and install flush with the existing pavement surface. Place the joint filler in one continuous length, so it covers the entire vertical surface and is in full contact with the sawed joint face, unless otherwise approved by the Engineer. Coat the portions of dowel bars that extend beyond the face of the existing pavement or the joint filler with an approved bond-breaking coating. Do not coat deformed bars used with tied joints (Trg) or anchored- in-place lane ties with bond-breaking coating. Install an approved expansion cap on the end of each dowel bar for expansio n joints (Erg), after applying the bond breaker.
3.Site Preparation . If the plans show base corrections, excavate and backfill in accordance with section 205 and section 302. When the MDOT Standard Specifications for Construction Section 603
6-33 existing base is more than 2 inches lower than the required grade,
correct the low base by adding base course aggregate and compacting to the required density and elevation. Increase the repair thickness, when the existing base is 2 inches or less below the required grade due to existing conditions or as a result of concrete pavement removal operations . Set forms to the line and grade shown on the plans . Use one -piece forms for repairs 10 feet or less . For repairs greater than 10 feet, use forms that lock together or splice sections to provide a continuous form. Provide metal or wood forms . If using wood side forms, use lumber with a nominal thickness of at least 2 inches. For reinforced concrete, position and support reinforcement in accordance with the MDOT Standard Plans.
4.Longitudinal Joints . If casting more than one l ane in a single pour, construct longitudinal joints in line with the existing longitudinal joints . Construct longitudinal joints to a depth of one -third the thickness of the pavement by sawing or forming before opening to traffic . Install lane ties in acc ordance with MDOT Standard Plan R -44 series . Construct anchored-in -place lane ties in accordance with subsection 603.03.B.2, for deformed bars used with tied joints (Trg), except the use of handheld drills will be allowed.
5.Transverse Joints. If the contrac t requires an existing curb to be left in place, and there is an expansion space in the adjacent lane repair, saw an expansion joint (Esc) in the curb. Construct the joint in line with and equal in width to the expansion joint in the adjacent lane repair . Shape the joint filler to match the curb cross section.
6.Placing Concrete. Immediately before concrete placement, wet the faces of the existing pavement and the surface of the aggregate base with water. Cast each repair in one continuous full -depth operation . Consolidate the concrete using a hand-held immersion-type vibrator, approved by the Engineer . Consolidate the concrete around dowel bars, deformed tie bars, and deformed lane tie bars.
7.Finishing Concrete . Strike off the surface flush with the existing pavement surface at least twice with a vibratory or roller screed. Do not float instead of striking off . For repairs 15 feet long or less, place the screed parallel to the centerline of the roadway . For repairs greater than 15 feet long, place the screed perpendicular to the centerline. MDOT Standard Specifications for Construction Section 603
6-34 While the concrete is still plastic, check that the edges of the repair
surface are flush with the edges of the existing concrete pavement, and verify the necessary grades are met. For repairs 10 feet long or less, place the straightedge parallel to the pavement centerline with the ends resting on the existing pavement and draw the straightedge across the repair . Use a straightedge no greater than 6 inches longer than the repair . Keep the straightedge in contact with the existing pavement while drawing it across the repair . Correct high or low spots greater than ⅛ inch, recheck the surface after making corrections, and eliminate irregularities. For repairs greater than 10 feet long, use a straightedge in accordance wi th subsection 602.03.I . Make the first and the last measurement with half the straightedge resting on the existing pavement . Make the second and the next to last measurement with 2 inches to 3 inches of the straightedge resting on the existing pavement . Correct high or low spots greater than ⅛ inch. Before texturing, run an edger with a ⅛ -inch to ¼ -inch radius along the perimeter of the repair . Remove forms after the concrete attains the strength required to prevent sagging or spalling upon removal of the forms.
8.Texturing . Texture the surface of the repair to match texturing on the adjacent concrete pavement.
9.Stenciling . Stencil the month and the year in each repair in accordance with subsection 602.03.L. If repair operations cause the removal of the existin g stationing, stencil the station in the repair at the required location.
10.Curing . Apply the curing compound immediately after free water evaporates from the concrete pavement surface. Do not delay curing compound application for other work during concrete pavement placing and finishing operations . Use white membrane curing compound, unless the repair requires a bituminous overlay . For repairs requiring bituminous overlay, use transparent curing compound. Apply the required curing compound in two coats, at a rate of at least 1 gallon per 25 square yards for each coat. Stop concrete pavement placement if the curing compound application process fails to meet the requirements specified in this subsection. Maintain the placed and finished concrete in a continuously moist condition, using fog mist, until membrane curing compound is applied. MDOT Standard Specifications for Construction Section 603
6-35 Alternative methods for keeping concrete continuously moist may be
approved by the Engineer. Reapply curing compound immediately to surfaces damaged by rain, joint sa wing, Contractor foot traffic, or other activities. Place insulated blankets to meet open-to -traffic requirements and protect the concrete pavement from weather damage. Provide insulated blankets at least 2 inches thick . When the air temperature falls belo w 50°F during the curing period, place blankets over the repaired area as soon as the curing compound dries . Secure edges and seams in the blanket to prevent heat loss . Protect the concrete until it attains the minimum flexural strength specified in Table 603-1. Comply with the methods included in the QC plan for achieving open-to -traffic strength within the required time period. The maturity method may be used at no additional cost to the Department, after submitting a plan to the Engineer for approval, to determine the in-place opening-to -traffic flexural strength. Make the necessary preliminary flexural strength versus opening-to -traffic time correlations before placing the concrete. Cure test beams for open-to -traffic strengths in the same manner as the repair.
11.Cleaning Joints . Remove concrete from the top of any joint filler prior to blast cleaning. Immediately before sealing joints, blast clean, except tied joints (Trg), and then finish cleaning the joint again using oil -free compressed air with a minimum pressure of 90 psi to remove all debris . Insert a backer rod in the bottom of the contraction joint (Crg) reservoir after the final cleaning and before sealing.
12.Sawing Joints . Do not construct r eservoirs for seals in the following joints:
a.Joints in base course repairs;
b.Joints in repairs constructed in preparation for HMA overlays; and
c.Reinforced anchored tied joints (Trg). For all other joints and saw cuts in concrete pavements, shoulders, or gutters caused by overcutting, clean and seal using hot -poured joint sealant. Before sealing joints, remove the joint filler from the top of the joint by sawing 1 inch wide and 1½ inches deep. Saw joint reservoirs for the contraction joints (Crg). MDOT Standard Specifications for Construction Section 603
6-36 Saw joint r eservoirs for C2 joints and E2 joints after the concrete
pavement attains the strength required to prevent excess raveling or spalling, but before random cracks develop. Forming of joint reservoirs is not allowed. Saw the initial relief cut and extend the reservoir to the plan width and depth in accordance with subsection 602.03.N, or initially saw to the width and depth shown on the plans.
13.Sealing or Resealing Transverse and Longitudinal Pavement Joints . After completion of concrete pavement repairs, spall repairs, and pavement texturing, s aw the transverse and longitudinal joints over the existing joint reservoir to remove existing sealant and produce a finished joint with two freshly sawed faces . Immediately after sawing, flush the joint reservoir with water to remove the slurry and debris . After final cleaning of the joints, insert a backer rod into the transverse joint, creating a 1:1 width-to -depth ratio for hot -poured sealant . Seal the joint reservoir to no greater than ⅛ inch (after cooling) below the concrete pavement surface for transverse and longitudinal joints and in accordance with subsection 602.03.S.
14.HMA Shoulder Replacement . Before opening to traffic, restore HMA shoulders to the existing line and grade using a plant -mixed HMA, as directed by the Engineer . Replace cold patch mixtures for temporary patching with plant -mixed HMA, unless the plans show shoulder reconstruction as part of the project . Compact the HMA using mechanical or hand methods required for the size of the repair are a. Fill the voids and compact flush with the surrounding shoulder . Place HMA at the required compaction temperatures. Properly dispose of materials removed from the shoulder.
15.Opening to Traffic . The concrete pavement must attain the required minimum flexur al strength, and all joints must be sawed and sealed in accordance with subsection 603.03.B before opening to traffic . The Engineer may allow traffic over the repair before the joints are cleaned and sealed.
C.Diamond Grinding and Grooving Concrete Pavement . Complete all pavement repair and joint restoration work, except sealing, before diamond grinding and grooving. Diamond grind and groove concrete pavement in the longitudinal direction beginning and ending at lines perpendicular to the pavement centerline. Stop grinding and grooving if conditions cause water to freeze. Do not disturb reflective pavement markers (RPM s). Taper grinding to the existing pavement surface within 2 inches of the RPM. MDOT Standard Specifications for Construction Section 603
6-37 Texture at least 95% of the pavement surface unless otherwise directed
by the Engineer . Extra depth grinding to eliminate minor depressions is not required. After initial grinding, regrind faulted areas, greater than 1⁄16 inch, at transverse cracks and joints, until faulting is less than 1⁄16 inch. Uniformly groove a parallel corduroy -type texture, consisting of grooves with a width of ⅛ inch and a depth of 5⁄32 inch with a tolerance of 1⁄32 inch. The grooves must be spaced at ¾ inch on center with a tolerance of 1⁄16 inch. Do not texture the pavement surface within 1½ inches of longitudinal joints . Provide a mean texture depth from 0.04 inch to 0.10 inch, in accordance with ASTM E965. Construct a uniform transverse slope with no depressions or misalignment greater than ⅛ inch when checked with a 10- foot straightedge. The Engineer will not apply straightedge requirements across longitudinal joints or outside ground areas . Transition grind the shoulder to provide cross slope drainage. To provide drainage and the required riding s urface, transition grind auxiliary or ramp lanes from the mainline edge. The Engineer will determine the transitions from ground to unground pavement surfaces. Seal joints after grinding and grooving.
1.Control and Disposal of Grinding and Grooving Slurry . Before beginning grinding and grooving, obtain the Engineer’s approval of the slurry spreading and disposal method. Do not allow grinding and grooving slurry to enter enclosed drainage systems. If approved by the Engineer, spread slurry along the roadway sl opes with the following restrictions:
a.Spread slurry at least 5 feet away from the curb.
b.Do not spread the slurry within 100 feet of a natural stream or lake.
c.Do not spread slurry within 5 feet of a water -filled ditch. If surface runoff occurs, collect and haul the grinding and grooving slurry to an Engineer -approved location on the project at no additional cost to the Department.
2.Testing Diamond Grinding and Grooving Slurry . The Department will take random samples of the grinding and grooving sl urry and cooling water for chemical testing. Allow Department personnel access to obtain the samples. MDOT Standard Specifications for Construction Section 603
6-38 D. Resealing Pavement Joints. Saw, or re -saw, clean, and seal longitudinal
and transverse concrete pavement joints in accordance with subsection 602.03.S and the following. Saw longitudinal and transverse joints as required by the contract . Re-saw existing longitudinal and transverse joints from 1 inch to 1¼ inches deep, and of sufficient width to establish a clean face each side of the joint reservoir . Immedi ately after sawing, flush the joint reservoir with water to remove slurry and debris. Provide a final cleaning just before sealing, in accordance with subsection 602.03.R . After the final cleaning, insert a backer rod into the transverse joint to provide a 1:1 width-to -depth ratio of joint sealant. The joint faces and pavement surface must be dry before sealing joints . Seal the joint reservoir to no more than ⅛ inch (after cooling) below the surface of the pavement.
E.Sawing and Sealing Cracks. Seal cracks wi th a hot -poured sealant as follows: Saw cracks from ½ inch to ⅝ inch deep and from ⅜ inch to ½ inch wide. After sawing, use hand tools or a lightweight chipping hammer to remove slivers of concrete, less than 1 inch wide, along the crack . Immediately befor e sealing, blast clean both faces of the sawed crack with dry abrasive to remove contamination and texture the faces . After dry abrasive blasting, clean the crack to remove debris using oil -free compressed air with a minimum pressure of 90 psi. The joint f aces and pavement surface must be dry before sealing joints . If the crack below the sealant reservoir is greater than ⅜ inch wide, insert a backer rod into the crack to form the bottom of the reservoir at the required depth. Seal the crack to no more than ⅛ inch (after cooling) below the surface of the pavement. If required by the crown of the roadway and the slope of the shoul der, fill the reservoir in two or more passes, place temporary dikes in the sealed reservoir, or use both methods . Remove the temporary dikes before the sealant fully cools and seal the resulting cavity . Apply the additional sealant before the previous application becomes contaminated. 603.04. Measurement and Payment Pay Item Pay Unit Pavt Repr, Rem ..................................................................... Square Yard Saw Cut, Intermediate ....................................................................... Foot Pavt Repr, Reinf Conc, __ inch ............................................. Square Yard MDOT Standard Specifications for Construction Section 603
6-39 Pavt Repr, Nonreinf Conc, __ inch ........................................ Square Yard
Non-Chloride Accelerator ............................................................... Gallon Joint, Contraction, Crg ...................................................................... Foot Joint, Expansion, Erg ........................................................................ Foot Joint, Expansion, Esc ........................................................................ Foot Joint, Tied, Trg ................................................................................... Foot Lane Tie, Epoxy Anchored ............................................................... Each Diamond Grinding Conc Pavt ................................................ Square Yard Diamond Grooving Conc Pavt ............................................... Square Yard Diamond Grinding and Grooving Conc Pavt ......................... Square Yard Resealing Trans Joints with Hot -Poured Rubber .............................. Foot Resealing Longit Joints with Hot -Poured Rubber .............................. Foot Crack Sealing, Conc Pavt ................................................................. Foot Cement ............................................................................................... Ton
A.Price Adjustments for Concrete Pavement Repairs. The Engineer will determine the final concrete pavement repair thickness in accordance with subsection 603.04.C . The Department may core the concrete pavement repairs and will adjust the unit prices for repairs that do not meet the required depth or the required reinforcement location in accordance with subsection 602.04.
B.Pavement Repair, Removal . The Department considers Pavt Repr, Rem the removal of pavement sections without disturbing the base, as shown on the plans . The unit price for Pavt Repr, Rem includes the c ost of the following:
1.Moving from repair to repair;
2.Establishing grade;
3.Saw cutting;
4.Removing adjacent concrete shoulders, curb, curb and gutter, and valley gutter;
5.Removing part -depth or full -depth HMA patches;
6.Lifting the repair section without disturbi ng the base;
7.Loading, hauling, and disposing of the removed material; and
8.Placing HMA mixture, as necessary, to restore the shoulders to the existing line and grade. The Department will include the pay item Saw Cut, Intermediate for sections of pavement on which the plans show Pavt Repr, Rem . The Department will not include the pay item Saw Cut, Intermediate for sections of pavement on which the plans show Pavt, Rem . The MDOT Standard Specifications for Construction Section 603
6-40 Department will pay for intermediate saw cuts for concrete pavement
repairs over 6 feet long, but less than 100 feet long, to allow loading onto hauling units, as Saw Cut, Intermediate. The Department will not pay separately for additional saw cuts to reduce slabs into pieces smaller than one lane width by 6 feet long. The Department will pay for the removal of portions of concrete that contain partial or full -depth HMA patches as Pavt Repr, Rem .
C.Pavement Repair, Reinforced Concrete, and Pavement Repair, Non-reinforced Concrete. The Department will establish a concrete pavement thickness for repairs, as shown on the plans, based on the original plan thickness of the existing concrete pavement plus 1 inch. The minimum thickness of the concrete pavement repair may vary by no more than 1 inch from the thickness shown on the plans. The Department will not pay separately for work required to correct low-base conditions caused by Contractor removal operations . The Department will pay for site preparation to correct base, more than 2 inches below the required grade, not caused by Contrac tor operations, under the relevant pay items . If the contract does not include a relevant pay item, the Department will pay for base corrections greater than 2 inches deep, not caused by Contractor operations, as extra work.
1.Repair . The Engineer will measure Pavt Repr, Reinf Conc and Pavt Repr, Nonreinf Conc , of the thickness specified, longitudinally along the pavement surface, and will use the transverse dimension shown on the plans. The unit prices for Pavt Repr, Reinf Conc and Pavt Repr, Nonreinf Conc include the cost of the following:
a.Moving from repair to repair;
b.Establishing grade;
c.Providing, placing, finishing, texturing, stenciling, and curing the concrete;
d.Providing and placing bar chairs and the steel reinforcement; and
e.Providing additional concrete, as necessary, to correct low -base conditions that do not exceed 2 inches measured from the required grade.
D.Repair of Concrete Shoulders, Curbs, and Curb and Gutter . The Engineer will measure repairs for concrete shoulders, curbs, and curb and gutter as Pavt Repr, Nonreinf, Conc at the same thickness as adjacent concrete pavement repairs . The Department will pay for repairing MDOT Standard Specifications for Construction Section 603
6-41 concrete shoulders, curbs, and curb and gutter as Pavt Repr, Nonreinf,
Conc .
E.Joints
1.Contraction Joints (Crg ). The unit price for Joint, Contraction, Crg includes the following:
a.Making the saw cuts required at the ends of the repairs;
b.Removing saw slurry from the pavement surface and sawed faces;
c.Drilling and cleaning holes for dowel bars and deformed bars;
d.Providing, mixing, and installing adhesive grout;
e.Providing and installing dowel bars or deformed bars;
f.Providing and applying the dowel bar bond breaker coating;
g.Sawing the joint reservoirs;
h.Cleaning and preparing the joint reservoir; and
i.Providing and installing the joint reservoir sealant .
2.Expansion Joint, Esc . The unit price for Joint Expansion, Esc includes the cost of sawing the joint, providing and installing the joint filler material, and installing the joint reservoir sealant.
3.Expansion, Erg . The unit price for Joint Expansion, Erg includes the cost of the following:
a.Making the saw cuts required at the ends of the repairs;
b.Removing the saw slurry from the pavement surface and sawed faces;
c.Drilling and cleaning the holes for the dowel bars;
d.Providing, mixing, and installing the adhesive grout;
e.Providing and installing the dowel bars;
f.Providing and applying the dowel bar bond breaker coating;
g.Providing, drilling or punching, and installing the joint filler;
h.Providing and installing the dowel b ar expansion caps;
i.Sawing the joint reservoirs;
j.Cleaning and preparing the joint reservoir; and
k.Providing and installing the joint reservoir sealant. MDOT Standard Specifications for Construction Section 603
6-42 The Department will pay for sawing depths greater than 1 inch below
the depth shown on the plans as extra work.
4.Transverse Plane-of -Weakness Joints. The Engineer will measure, and the Department will pay for , transverse plane-of -weakness joints in accordance with subsection 602.04.
5.Tied Joints (Trg) . The unit price for Joint, Tied, Trg includes the cost of the following:
a.Removing saw slurry from the pavement surface and sawed faces;
b.Drilling and cleaning holes for dowel bars and deformed bars;
c.Providing, mixing, and installing adhesive grout; and
d.Providing and installing dowel bars or deformed bars.
6.Longitudina l Joints . The unit prices for other pay items include the cost of sawing and sealing internal and external longitudinal joints.
F.Lane Tie, Epoxy Anchored . The unit price for Lane Tie, Epoxy Anchored includes the cost of the following:
1.Drilling and cleaning the holes;
2.Providing, mixing, and installing the adhesive grout; and
3.Providing and installing the deformed bars. The unit prices for other pay items include the cost of final trim and clean-up, part -width construction, and restoring shoulders.
G.Diamond Grin ding and Grooving Concrete Pavement . The Engineer will include the final textured surface area in the measurement for Diamond Grinding Conc Pavt , Diamond Grooving Conc Pavt , and Diamond Grinding and Grooving Conc Pavt . The Department will not deduct minor areas of untextured pavement if the minor areas total no greater than 5 % of the area shown on the plans. The unit price for Diamond Grinding Conc Pavt , Diamond Grooving Conc Pavt , and Diamond Grinding and Grooving Conc Pavt includes the cost of cleanup, collecting, hauling, and disposing of grinding slurry . The unit prices for other pay items include the cost of additional passes or regrinding to meet ride quality requirements.
H.Resealing Transverse and Longitudinal Joints with Hot -Poured Rubber . The Engineer will measure Resealing Trans Joints with Hot-Poured Rubber and Resealing Longit Joints with Hot -Poured Rubber in a straight line in the direction of each joint . The unit prices for Resealing Trans Joints with Hot -Poured Rubber and Resealing MDOT Standard Specifications for Construction Section 603
6-43 Longit Joints with Hot -Poured Rubber include the cost of removing
existing sealants, sawing, cleaning, and sealing the joints.
I.Crack Sealing, Concrete Pavement . The Engineer will measure Crack Sealing, Conc Pavt in a straight line in the direction of each cr ack.
Source: Michigan Standard Specifications for Construction, 2020 Edition. Pages 349–364 of 1,146.