Part 1 — General
1.1 Section Includes
A.Joint Filler and Joint Sealer
B.Backer Rods and Waterstops
1.2 RELATED SECTIONS Not Used
1.3 References
A.AASHTO M 153: Preformed Sponge Rubber and Cork Expansion Joint Fillers for Concrete Paving and Structural Construction
B.AASHTO M 213: Preformed Expansion Joint Filler s for Concrete Paving and Structural Construction (Non- extruding and Resilient Bituminous Types)
C.AASHTO LRFD Bridge Construction Specifications
D.ASTM C 309 : Liquid Membrane- Forming Compounds for Curing Concrete
E.ASTM C 509: Elastomeric Cellular Preformed Gasket and Sealing Material
F.ASTM C 639: Rheological ( Flow) Properties of El astomeric Sealants
G.ASTM C 661: Indentation Hardness of Elastomeric -Type Sealants by Means of a Durometer
H.ASTM C 679: Tack -Free Time of Elastomeric Sealants
I.ASTM C 719: Adhesion and Cohesion of Elastomeric Joint Sealants Under Cyclic Movement (Hockman Cycle)
J.ASTM C 793: Effects of Laboratory Accelerated Weathering on Elastomeric Joint Sealants
K.ASTM C 794: Adhesion- in-Peel of Elastomeric Joint Sealants
L.ASTM C 920: Elastomeric Joint Sealants
M.ASTM D 412: Vulcanized Rubber and Thermoplastic Rubbers and Thermoplastic Elastomers -Tension
N.ASTM D 792: Density and Specific Gravity (Relative Density) of Plastics by Displacement
O.ASTM D 1621: Compressive Properties of Rigid Cellular Plastics
P.ASTM D 1622: Apparent Density of Rigid Cellular Plastics
Q.ASTM D 1623: Tensile and Tensile Adhesion Properties of Rigid Cellular Plastics
R.ASTM D 6690 : Joint and Crack Sealants, Hot Applied, for Concrete and Asphalt Pavements
S.Federal Specifications
T.Military Specifications (MIL)
1.4 DEFINITIONS Not Used
1.5 Submittals
A.Manufacturer’s product data sheets and recommended installation instructions.
Part 2 — Products
2.1 Hot Poured Joint Sealant
A.Refer to ASTM D 6690, Type II for general requirements, physical properties, packing, marking, and sampling.
2.2 Premolded Joint Fillers
A.Refer to AASHTO M 153
B.Refer to AASHTO M 213.
2.3 Silicone Joint Sealer
A.Silicone joint sealer and special category for self -leveling .
1.Both made of low -modulus silicone specifically formulated to seal portland cement concrete pavement joints.
B.Furnish in a one- part, non- acid curing formulation. Refer to ASTM C 309 .
C.Meet the requirements in Table 1 for Silicone joint sealer and Table 2 for Self-leveling silicone joint sealer . Table 1 Requirements (Silicone Joint Sealer) Description Requirement Test Method Tensile Stress –150 percent max elongation, 7- day cure at 77 ± 3 degrees F and 45 -55 percent relative humidity (rh). 45 psi maximum ASTM D 412 (DIE C) Flow 0.3 inch maximum MIL-S-8802 Extrusion Rate 100 degrees to 0 degrees F 0.2 - 0.6 lbs/min MIL-S-8802 Tack -Free Time 20 - 75 minutes MIL-S-8802 Specific Gravity 1.01 - 1.51 ASTM D 792 Durometer Hardness, shore A – cured 7 days at 77 ± 3 degrees F and 45- 55 percent relative humidity (rh). 10 - 25 ASTM C 661 Shelf Life 6 month minimum from date of shipment from plant or point of manufacture. Ozone and Ultraviolet (UV) Resistance No chalking, cracking, or bond loss . ASTM C 793 Movement capability and adhesion. Magnitude of cycles movement is appropriate for sealant category, cure 7 days in air 77 ± 3 degrees F then 7 days in water 77 ± 3 degrees F. No Failures ASTM C 719 Table 2 Requirements for Self -Leveling (Silicone Joint Sealer) Description Requirement Test Method Rheological Properties – Type I Pass ASTM C 639 Elongation, percent minimum 800 % ASTM D 412 DIE C, Mod. Tensile Stress at 150 percent Elongation 40 psi maximum ASTM D412 Accelerated Weathering No chalking, cracking, or bond loss ASTM C793 Shelf Life Six month min. from date of shipment from plant or point of manufacture. Durometer Hardness, Shore OO – cured 14 days at 77 ± 3 degrees F and 45 - 55 percent, rh 40-80 ASTM C661 Movement capability and adhesion. Magnitude of cycles movement is appropriate for sealant category, cure 14 days in air 77 ±3 degrees F, and then 7 days in water 77 ±3 degrees F No failures ASTM C719
D.Sealant must be delivered in the manufacturer’s original sealed container, displaying the lot number, expiration date of the shelf -life warranty, and the sealer trade name.
2.4 Backer Rod
A.Use closed -cell, polyethylene- foam rods that meet the requirements in Table 3. Table 3 Backer Rod Requirements and Test Methods Description Requirement Test Method Diameter Density Tensile Strength Absorption Compression Deflection Joint width + ⅛ inch 2 lbs/ft3 25 psi
0.5 % by volume
25 percent at 8 psi ASTM D 1622 ASTM D 1623 ASTM C 509 ASTM D 1621 ASTM D 1621
2.5 Joint Sealer (Structures)
A.Cold-applied, gun- grade, polyurethane base material that cures under field conditions to form a rubber -like, non -sag, elastomeric joint seal as specified in Federal Specifications TT -S-00230 C , Type II, Class A and ASTM C 920, Type S or M, Grade NS, Class 35 or higher, with at least the following Use: T, M, I.
B.Use material that bonds tightly to the sides of the concrete groove and exhibits the physical properties in Table 4 when cured and tested after 21 days at 73 degrees F. Table 4 Physical Properties of Joint Sealer (Structures) and Test Methods Description Requirement Test Method Modulus of Elasticity at 100 percent Elongation 65 psi minimum ASTM D 412 Hardness (Shore A) 30 minimum ASTM C 661 Elongation (at break) 300 % minimum ASTM D 412 Tensile Strength 175 psi minimum ASTM D 412 Adhesion -in-Peel 20 lbs/linear inch (pli) ASTM C 794 Service Temperature Range -20 °F to 180 °F TT-S-00230 C Final Cure 5 to 8 days ASTM C 679 Color Gray
2.6 Waterstops
A.Refer to AASHTO LRFD Bridge Construction Specifications , Section 8.9.2.6
Part 3 — Execution
3.1 Relief Joint Sealing
A.Form or saw cut joint as shown.
B.Cleaning and Drying
1.Asphalt joint
a.Clean 6 inches on both sides of the joint of foreign matter and loosened particles with a hot compressed air heat lance immediately before sealing the joint.
b.Adequate cleaning is determined by surface darkening at least 12 inches wide, centered on the joint.
2.Concrete joint
a.Clean joint and concrete surface by sand blasting before applying the sealant.
b.Remove sand left by sandblasting from the joint and surrounding surfaces using compressed air.
C.Use a backer rod compatible with the sealant, when shown.
D.Apply hot poured joint sealant as shown.
Source: Utah Standard Specifications for Road and Bridge Construction, 2026 Edition. Pages 919–924 of 1,331.