UDOT Section 02750: Partial Depth Repair…

PARTIAL DEPTH REPAIR FOR CONCRETE PAVEMENT USING HOT APPLIED REPAIR MATERIALS

PART 1 GENERAL

1.1SECTION INCLUDES

A.Partial depth repair of spalled or delaminated concrete with hot-

applied flexible polymer modified patch material in the upper one third to one half of the pavement.

B.Placing hot-applied flexible polymer modified patch material to bring

existing repairs flush with the pavement

1.2RELATED SECTIONS

A.Section 02753: Full Depth Slab Replacement for Concrete

Pavements

1.3REFERENCES Not Used

1.4DEFINITIONS Not Used

1.5SUBMITTALS

A.APL Compliance Form for information for hot-applied flexible

polymer modified repair material.

B.Manufacturer’s product data, specifications, and recommended

installation instructions.

1.Include contact information for technical representative who

will be on site. Refer to this Section, Paragraph 3.1, subparagraph A1.

Partial Depth Repair for Concrete Pavements Using Hot Applied Repair Materials – 1 of 5

PART 2 PRODUCTS

2.1HOT-APPLIED FLEXIBLE POLYMER MODIFIED REPAIR MATERIAL

A.Use repair material that will provide an impermeable, voidless mass

that is solid at ambient temperatures consisting of resin, polymers, graded fillers, aggregates, and chopped fiberglass fibers; up to 3 percent recycled tire rubber, ½ percent to 1 percent steel fibers 0.5 mm to 1 mm in diameter meeting the requirements of table 1.

1.Supply material in a powder form, factory blended and

bagged in meltable bags.

B.Use bulking aggregate approved by the manufacturer.

Table 1 FINISHED PRODUCT Test Method REQUIREMENT PROPERTIES Color Grey Tensile Strain TEX-548-C 35% minimum @ 2”/minute Cone Flow TEX 549-C 6% maximum Aggregate Settlement TEX-551-C 3% maximum Flexibility / Mandrel Good or Better (no tearing at TEX-550-C bend point) Resilience TEX-547-C 50% minimum Recommended 300°F- 350°F Application Temp. Specific Gravity ASTM D2726 1.8-2.0

C.Provide topping stone as recommended by the manufacturer.

2.2EQUIPMENT

A.Provide horizontal mixing unit with thermostatic controls.

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PART 3 EXECUTION

3.1IDENTIFICATION AND PREPARATION OF REPAIR AREA

A.The Engineer will establish and mark circular, rectangular or

triangular repair areas extending at least 1 inch beyond a spalled area or 6 inch beyond the failed area.

1.The Engineer will re-mark any area that is discovered to be

spalled or delaminated during the removal.

2.Limit each repair location to a maximum of 9 square feet.

a.Repair the pavement using full depth panel

replacement when repair exceeds 9 square feet. Refer to Section 02753.

3.Limits for corner breaks

a.Use a triangular repair when only one adjacent panel

has a corner break.

b.Use a circular repair when two or more adjacent panels

have corner breaks. 1) Center repair over intersection of the joints. 2) Limit repairs to 1 foot diameter 3) Use triangular repair when repair is greater than 1 foot diameter.

B.Remove concrete from repair area.

1.Saw cut or core drill a minimum of 1/2 inch in depth around

exterior of repair area.

2.Remove material with 30 pound class or smaller hand

jackhammers.

C.Completely remove all loose particles, crack seal, oil, dust, moisture,

and all other contaminants.

1.Use compressed air at a minimum of 100 psi to clean all

surfaces.

2.Remove exposed reinforcing steel before placing the patch

material.

D.Prime all surfaces of new repair areas using primer recommended

by the manufacturer to prevent moisture intrusion.

E.Heat surface of existing patching material per manufacture

recommendations.

1.Replace existing patches heated above the recommended

temperatures at no additional cost to the Department.

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3.2MATERIAL PLACEMENT

A.Follow manufacturer’s specifications for material preparation and

placement.

1.Have manufacturer’s representative on site for the first day of

material placement or as determined by the Engineer.

B.Place bulking aggregate evenly throughout the patch to within ¼

inch of the surface for repairs that are 1 inch in depth or greater.

1.Heat and dry bulking aggregate in a vented barrel mixer at

300 degrees F immediately before placement.

C.Place and finish hot-applied flexible polymer modified repair material

flush with existing surface.

D.Top with manufactures recommended topping stone to refusal at the

gel stage.

E.Repair patches with surface profiles that vary from the existing

roadway profile by more than 1/8 inch.

1.Remove and replace or grind patches with surface profiles

greater than 1/8 inch above the surrounding pavement surface.

2.Apply additional patch material to patches with surface

profiles greater than 1/8 inch below the surrounding pavement surface.

3.3PROTECTION

A.Do not open to traffic until patching material has cooled or hardened

sufficiently to support traffic loads per manufacturer’s recommendations.

B.Protect all placements according to the authorized traffic control

plan.

C.Remove and replace any patches that are rejected before

substantial completion due to the following:

1.Unsatisfactory or improper workmanship by the Contractor,

including patches with surface profiles that vary from the existing roadway profile by more than ⅛ inch.

a.Patches with a profile higher than ⅛ inch from the

existing roadway profile may be ground to meet existing profile instead of removal and replacement.

2.Failures due to damage by the operation or public traffic.

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3.4CLEAN PAVEMENT

A.Sweep roadway and shoulders of all debris before opening to traffic.

Prevent damage to the patches from cleaning equipment.

END OF SECTION

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Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 535–539 of 1,331. View official source ↗

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