Part 1 — General
1.1 Section Includes
A.Removal and closure of expansion joints in existing bridge decks and parapets.
1.2 Related Sections
A.Section 03055: Portland Cement Concrete
B.Section 03152: Concrete Joint Control
C.Section 03211: Reinforcing Steel and Welded Wire
D.Section 03310: Structural Concrete
E.Section 03390: Concrete Curing
F.Section 09991: Cleaning and Repainting or Overcoating Structural Steel
1.3 References
A.ASTM A 653: Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy- Coated (Galvannealed) by the Hot-Dip Process
B.ASTM C 307: Tensile Strength of Chemical-Resistant Mortar, Grouts, and Monolithic Surfacings
C.ASTM C 578: Rigid, Cellular Polystyrene Thermal Insulation
D.ASTM C 579: Compressive Strength of Chemical-Resistant Mortars, Grouts, Monolithic Surfacings, and Polymer Concretes
E.ASTM C 1339: Flowability and Bearing Area of Chemical-Resistant Polymer Machinery Grouts
F.ASTM D 4635: Plastic Films Made from Low-Density Polyethylene and Linear Low-Density Polyethylene for General Use and Packaging Applications
1.4 DEFINITIONS Not Used
1.5 Submittals
A.Manufacturer’s product data sheets for review.
1.Include recommended installation instructions for information.
Part 2 — Products
2.1 Materials
A.Concrete
1.Deck and Approach Slab Concrete
a.Class AA(LSF) according to Section 03055
2.Other concrete
a.Class AA(AE) according to Section 03055
3.Do not use high early strength concrete, except as shown.
B.Reinforcing Steel
1.Coated reinforcing steel according to Section 03211
C.Doweled Anchors
1.Coated doweled anchors according to Section 03211
D.Galvanized Sheet Metal
1.16 gauge according to ASTM A 653
E.Rigid Plastic Foam – Type IX according to ASTM C 578.
F.Epoxy Grout
1.Provide a minimum compressive strength of 3,000 psi in 24 hours and 5,000 psi in 28 days according to ASTM C 579.
2.Provide a minimum tensile strength of 2,000 psi according to ASTM C 307.
3.Provide an effective bearing area of at least 95 percent according to ASTM C 1339.
G.Joint Sealer (Structures) – Refer to Section 03152.
H.Backer Rod – Refer to Section 03152.
I.Bond Breaker Material
1.Low density polyethylene sheet according to ASTM D 4635.
a.Use 1/8 inch thick sheets.
J.Structural steel paint prime coat – Refer to Section 09991.
2.2 Equipment
A.Jackhammers
1.90 lb class hand-operated jack hammer
2.45 lb class hand-operated jack hammer
Part 3 — Execution
3.1 Preparation
A.Debris Containment
1.Prevent debris from falling into water features and onto pedestrian areas, traffic areas, and railroad tracks.
B.Mark the surface of the deck 6 inch away from the girder or abutment diaphragms with marking paint to indicate zones requiring limited weight jackhammers.
3.2 Remove Concrete
A.Concrete Saw Cuts
1.Saw cut concrete surface 1 inch deep along perimeter of concrete removal area.
B.Use jackhammer method to remove existing concrete.
1.Use 90 lb class hand-operated jack hammers or smaller.
a.Use 45 lb class hand-operated jack hammer or smaller when removing concrete within 6 inch of girders and diaphragms that are to remain.
2.Operate jack hammers at an angle greater than 45 degrees as measured from the deck surface.
3.Modify the removal process if damage occurs to the top flanges and diaphragms.
C.Remove existing joint armor steel and existing joint materials.
D.Protect existing electrical conduit from damage where encountered.
E.Remove loose or fractured concrete.
F.Clean existing concrete and steel surfaces.
1.Remove shear connectors as shown.
3.3 Reinforcing Steel
A.Existing Reinforcing Steel
1.Thoroughly clean reinforcing steel that will remain in place of corrosion and adhering materials by abrasive blasting.
2.Remove and replace any reinforcing steel with 25 percent or greater section loss.
a.Cut and remove deteriorated existing reinforcing steel bars.
b.Match the size of the new reinforcing steel bar to the existing bar.
c.Provide lap lengths as shown.
B.New Reinforcing Steel and Doweled Anchors
1.Place reinforcing steel and doweled anchors after abrasive blasting operations are complete.
3.4 Structural Steel Preparation and Paint
A.Refer to Section 09991.
B.Prepare and paint top surface of steel elements shown per repainting requirements.
C.Apply prime coat only
3.5 Place Concrete
A.Use epoxy grout to create a smooth, flat, uniform surface on concrete girders and diaphragms as shown.
1.Cure according to manufacturer’s installation instructions.
B.Provide saturated surface dry (SSD) condition to existing concrete surfaces before placing concrete.
C.Form, place, and finish concrete according to Section 03310.
D.Cure concrete according to the requirements for cast-in-place concrete closure pours in bridge decks and approach slabs in Section 03390.
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Source: Utah Standard Specifications for Road and Bridge Construction, 2027 Edition. Pages 999–1002 of 1,343. View official source ↗