03152Concrete Joint Control

CONCRETE JOINT CONTROL

PART 1 GENERAL

1.1SECTION INCLUDES

1.2RELATED SECTIONS Not Used

1.3REFERENCES

Fillers for Concrete Paving and Structural Construction

and Structural Construction (Non-extruding and Resilient Bituminous Types)

Material

Means of a Durometer

Under Cyclic Movement (Hockman Cycle)

Elastomeric Joint Sealants

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Thermoplastic Elastomers-Tension

by Displacement

Plastics

Asphalt Pavements

1.4DEFINITIONS Not Used

1.5SUBMITTALS

instructions.

PART 2 PRODUCTS

2.1HOT POURED JOINT SEALANT

properties, packing, marking, and sampling.

2.2PREMOLDED JOINT FILLERS

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2.3SILICONE JOINT SEALER

portland cement concrete pavement joints.

Self-leveling silicone joint sealer.

Table 1 Requirements (Silicone Joint Sealer)

Description Requirement Test Method Tensile Stress –150 percent max 45 psi maximum ASTM D 412 elongation, 7-day cure at 77 ± 3 degrees F (DIE C) and 45-55 percent relative humidity (rh). 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 10 - 25 ASTM C 661 days at 77 ± 3 degrees F and 45-55 percent relative humidity (rh). Shelf Life 6 month minimum from date of shipment from plant or point of manufacture. Ozone and Ultraviolet (UV) Resistance No chalking, cracking, or ASTM C 793 bond loss. Movement capability and adhesion. No Failures ASTM C 719 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.

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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, ASTM C793 or bond loss Shelf Life Six month min. from date of shipment from plant or point of manufacture. Durometer Hardness, Shore OO – cured 40-80 ASTM C661 14 days at 77 ± 3 degrees F and 45 - 55 percent, rh Movement capability and adhesion. No failures ASTM C719 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

displaying the lot number, expiration date of the shelf-life warranty, and the sealer trade name.

2.4BACKER ROD

Table 3.

Table 3 Backer Rod Requirements and Test Methods Description Requirement Test Method Diameter Joint width + ⅛ inch Density 2 lbs/ft3 ASTM D 1622 Tensile Strength 25 psi ASTM D 1623 Absorption 0.5 % by volume ASTM C 509 Compression 25 percent at 8 psi ASTM D 1621 Deflection ASTM D 1621

Concrete Joint Control

2.5JOINT SEALER (STRUCTURES)

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, TypeS or M, Grade NS, Class 35 or higher, with at least the following Use: T, M, I.

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 ASTM D 412 minimum Adhesion-in-Peel 20 lbs/linear ASTM C 794 inch (pli) Service Temperature Range -20 °F to 180 °F TT-S-00230 C Final Cure 5 to 8 days ASTM C 679 Color Gray

2.6WATERSTOPS

8.9.2.6

PART 3 EXECUTION

3.1RELIEF JOINT SEALING

and loosened particles with a hot compressed air heat lance immediately before sealing the joint. Concrete Joint Control

least 12 inches wide, centered on the joint.

applying the sealant.

surrounding surfaces using compressed air.

END OF SECTION

Concrete Joint Control