FULL DEPTH SLAB REPLACEMENT FOR CONCRETE PAVEMENTS
Part 1 — General
1.1 Section Includes
A.Remove full panel or partial panel of existing pavement.
B.Clean, grade, and reconsolidate base.
C.Install dowels and tie bars.
D.Place and cure concrete .
1.2 Related Sections
A.Section 02752: Portland Cement Concrete Pavement
B.Section 03055: Portland Cement Concrete
C.Section 03058: Rapid Strength Concrete (RSC)
D.Section 03390: Concrete Curing
1.3 References
A.AASHTO M 235: Epoxy Resin Adhesives
B.ASTM C 309: Liquid Membrane- Forming Compounds for Curing Concrete
C.ASTM C 1074: Estimating Concrete Strength by the Maturity Method
1.4 DEFINITIONS Not Used
1.5 Submittals
A.Authorized Products List (APL) Compliance Form for Epoxy Resin Adhesive.
B.Sample of the end caps for approval before use on the project.
Part 2 — Products
2.1 Full Depth Slab Replacement With Portland Cement
CONCRETE (PCC)
A.Use AA(AE) concrete. Refer to Section 03055
1.Meet a 28 day flexural s trength of 650 psi verified through trial batch.
2.Use high range water reducers such as Super Plasticizers.
2.2 Full Depth Slab Replacement With Rsc
A.Use RSC. Refer to Section 03058.
2.3 Concrete Curing Compound
A.Refer to ASTM C 309, Type 2, Class A for repairs with PCC
B.Refer to ASTM C 309 Type 2, Class B for repairs with RSC
2.4 Reinforcing Steel
A.Refer to Section 02752.
2.5 Epoxy Resin Adhesive
A.Use an epoxy resin adhesive according to AASHTO M 235. Select Type and Class for the application.
Part 3 — Execution
3.1 Preparation
A.Remove full panel of damaged existing pavement.
1.Determine the extent and dimensions of the panel removal as shown or as directed by the Engineer. Refer to PV Series Standard Drawings.
2.Complete the removal and make full depth cuts around the perimeter of the rectangular section to be removed.
a.Minimize saw overcuts.
3.Remove panels by lift -out method.
a.Use chains and lift pins to facilitate removal and minimize disturbance of the base material.
4.Repair damage to adjacent slabs and underlying base courses caused by removal operations .
5.Remove all loose particles of existing concrete before placing new concrete .
B.Grade and compact the existing base.
1.Use the largest piece of vibratory or impact compaction equipment practical .
2.Continue compaction until additional work does not improve the measured density
C.Form any side that does not have an adjacent panel.
1.Form to match existing panels, providing a vertical edge.
D.Place D owel and Tie Bars
1.Place bars in locations according to PV Series Standard Drawings. Use tie bars or smooth dowels where indicated on standard drawings.
2.Stockpile bars and keep them clean and free from damage.
3.Drill holes mid -depth of the slab without causing damage to the remaining pavement section and meet bar placement tolerances.
4.Drill multiple holes simultaneously with drills held horizontally in a rigid frame.
a.Prevent drill bits from wandering.
5.Clean holes of dust, grease, and other contaminants.
6.Inject epoxy resin adhesive into the back of the drilled hole .
a.Provide sufficient quantity of bonding compound to completely fill the void between the bar and the outer limits of the drilled hole.
b.Rotate one full revolution while inserting bar.
c.Use retention rings to prevent the bonding compound from flowing out of the hole.
7.Align bars horizontally and vertically to meet requirements of the Standard Drawings and allow them to stabilize before mix placement.
8.Repair any bar coating damage with appropriate repair material.
9.Place tight fitting end caps made of non- metallic materials that allow ¼ inch movement on protruding dowels used at expansion joints.
10.Coat protruding portion of dowel bar with lubricant consisting of paraffin wax, lithium grease, or other semi -solid, inert lubricant approved by the Engineer.
11.Remove and replace loose bars before placing concrete mix.
E.Prepare panel joints for concrete placement .
1.Maintain existing pavement joint layout.
2.Place a bond breaker approved by the Engineer on the existing pavement edges that become transverse or longitudinal panel joints.
3.Saw cut joint on the same line if repairs straddle an existing joint line. Saw according to Section 02752 .
3.2 Place Concrete
A.Place concrete according to Section 02752 for panels placed with PCC .
B.Place concrete according to Section 03058 for panels replaced with RSC
3.3 Finish Concrete
A.Finish panels to ± ⅛ inch of existing profile.
1.Correct panel profiles in excess of ⅛ inch higher than the existing pavement profile by surface grinding or removal and replacement.
2.Correct panel profiles in excess of ⅛ inch lower than the existing pavement profile by removal and replacement of the pa nel.
3.Make necessary corrections to the concrete finish .
B.Do not tool joints that are to be saw cut and sealed.
C.Texture the surface to match the existing pavement.
3.4 Cure , Protect and Saw Cut Concrete
A.Cure the concrete pavement .
1.Refer to Section 0 2752 when using PCC
2.Refer to Section 03058 when using RSC .
B.Protect the individual placements with approved barricades.
C.Saw c ut all previously existing joints to original dimensions.
D.Fill all sawing overcuts with r epair epoxy approved by the Engineer .
3.5 Defective Pavement Panels
A.Remove and replace defective panels. Refer to Section 02752.
3.6 Limitations
A.Do not open to traffic until 3 000 psi strength is reached. V erified by either:
1.Maturity Method – Refer to ASTM C 1074
2.Cast cylinders when using PCC
3.Concrete Compressive Strength of 3500 psi is required in cold weather.
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 562–566 of 1,331.