PARTIAL DEPTH REPAIR FOR CONCRETE PAVEMENT USING PORTLAND CEMENT CONCRETE
PART 1 GENERAL
1.1SECTION INCLUDES
A.Partial Depth repair of spalled or delaminated concrete in the upper one
third to one half of the pavement.
1.2RELATED SECTIONS
A.Section 02752: Portland Cement Concrete Pavement
B.Section 03055: Portland Cement Concrete
C.Section 03390: Concrete Curing
1.3REFERENCES
A.AASHTO M 235: Epoxy Resin Adhesives.
B.ASTM D 6690: Joint and Crack Sealants, Hot Applied, for Concrete and
Asphalt Pavements
1.4DEFINITIONS Not Used
1.5SUBMITTALS
A.Request to use alternative patching material to the Engineer for approval.
Include the following:
1.Manufacturer’s product data sheets and recommended installation
instructions.
2.Contact information for technical representative who will be on site.
Refer to this Section, Paragraph 3.4.C
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PART 2 PRODUCTS
2.1REPAIR MATERIAL
A.Use Class AA(AE). Refer to Section 03055.
1.Alternative patching material may be used when approved.
2.2CONCRETE CURING COMPOUND
A.Refer to Section 03390.
2.3HOT APPLIED JOINT FILLER
A.Refer to ASTM D 6690, Type II
PART 3 EXECUTION
3.1IDENTIFICATION AND PREPARATON OF REPAIR AREA
A.The Engineer will establish and mark rectangular or circular repair areas,
extending at least 2 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.
B.Remove concrete from repair area
1.Saw cut or core drill a minimum of 2 inch in depth around the
exterior of the repair area.
2.Remove material with 30 pound class or smaller hand
jackhammers.
C.Remove all loose particles, oil, dust, and all other contaminants.
1.Use sandblasting or waterblasting with at least 2,000 psi.
D.Remove all cleaning grit before placement.
E.Sandblast clean or remove partially exposed reinforcing steel before
placing the patch material.
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3.2PREPARE EXISTING JOINTS FOR PLACEMENT
A.Maintain a width equal to the opening in all working joints and cracks
within or adjacent to the patch by inserting a removable material such as cardboard, polyfoam, or fiberboard before placing the mix.
1.Use a material of uniform size and thickness.
B.Place the joint forming material 1 inch below and 3 inches laterally beyond
the patch boundary.
1.Do not widen the existing joint to provide for or facilitate placement
of the removable joint material.
3.3MATERIAL PLACEMENT
A.Prepare the existing surface by applying a bonding agent of cementitious
grout designed for bonding concrete products.
1.Prepare grout by combining sand and Portland Cement in a 1:1
ratio by volume and enough water to produce a creamy consistency.
a.Apply with a brush to bottom and sides of repair area.
B.Place patching material before bonding agent dries.
C.Do not begin placement of alternative patching materials before having a
manufacturer representative on site. Manufacturer’s representative will address the following requirements:
a.On site mixing permissibility and constraints
b.Surface preparation of the repair area and appropriate
bonding agent
c.Consolidation requirements
d.Pot life of mix
e.Environmental conditions and limitations
D.Remove and replace patch if any of the following occurs:
1.Visible cracking
2.Shrinkage, including the breaking of bond between patch and
pavement
3.Pop-outs including pieces of pavement greater than ½ inch
diameter.
4.Patch surface profiles that are more than 1/8 inch below the
existing roadway surface.
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E.Grind patches with surface profiles greater than 1/8 inch above the
surrounding pavement surface to match the surrounding pavement surface.
3.4FINISH
A.Finish the patched surface to within ⅛ inch of the existing pavement.
3.5CURE AND PROTECT
A.Cure the patched surface immediately after finishing operations according
to Section 03390 with the following change:
1.Uniformly spray the surface at a rate of 50 ft2/gal.
B.Do not open to traffic until patching material has achieved required
strength.
C.Protect all placements according to the authorized traffic control plan.
D.Fill overcuts flush to the pavement surface with a repair epoxy.
E.Remove joint forming material and fill all affected joints with hot pour
material. Refer to ASTM D 6690
3.6CLEAN PAVEMENT
A.Sweep roadway and shoulders of all debris before opening to traffic.
Prevent damage to the patches from cleaning equipment.
3.7LIMITATIONS
A.Refer to Section 02752.
END OF SECTION
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Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 540–543 of 1,331.
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