ITEM P-605 JOINT SEALING FILLER
DESCRIPTION
605-1.1 This item shall consist of providing and installing a resilient and adhesive joint sealing filler capable of effectively sealing joints and cracks in pavements.
MATERIALS
605-2.1 JOINT SEALERS. Joint sealing materials shall meet the requirements of [ ].
[Each lot or batch of sealing compound shall be delivered to the jobsite in the manufacturer's original sealed container. Each container shall be marked with the manufacturer's name, batch or lot number, the safe heating temperature, and shall be accompanied by the manufacturer's certification stating that the compound meets the requirements of this specification.]
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The Engineer shall specify one or more of the following:
FED SPEC SS S 200E(2) – Sealants, Joint, Two-Component, Jet-Blast Resistant, Cold Applied.
ASTM D 1854 Jet Fuel Resistant Concrete Joint Sealer, Hot Applied Elastic Type
ASTM D 3406 Joint Sealants, Hot Applied, Elastometric Type, for Portland Cement Concrete Pavements
ASTM D 3569 Joint Sealants, Hot Applied, Elastometric, Jet Fuel Resistant type, for Portland Cement Concrete Pavements
ASTM D 3581 Joint Sealant, Hot Applied, Jet Fuel Resistant Type, for Portland Cement Concrete and Tar Concrete Pavements
ASTM D 5893 - Standard Specifications for Cold Applied, Single Component, Chemically Curing Silicone Joint Sealant for Portland Cement Concrete Pavements.
ASTM D 6690 Joint and Crack Sealants, Hot Applied, for Concrete and Asphalt Pavements
Additionally, if silicone sealants are elected, add the ASTM to the listing of Material Requirements.
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CONSTRUCTION METHODS
605-3.1 TIME OF APPLICATION. Joints shall be sealed as soon after completion of the curing period as feasible and before the pavement is opened to traffic, including construction equipment. The pavement temperature shall be above [40°F (4°C)][(50°F (10°C)] at the time of installation of the [preformed joint seal][poured joint sealing material].
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Specify 40°F (4°C) for preformed seal and 50°F (10°C) for poured seals.
If the pavement must be opened to traffic prior to placement of the sealant, this paragraph should be modified to require the Contractor to temporarily fill the joint with a jute or nylon rope immediately after the joint is sawed. The rope should be slightly larger than the joint and should be forced into the joint so that the top of the rope is 1/8 inch (3 mm) below the pavement surface. The rope shall be removed immediately prior to cleaning.
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605-3.2 PREPARATION OF JOINTS.
a. Sawing. All joints shall be sawed in accordance with specifications and plan details. Immediately after sawing the joint, the resulting slurry shall be completely removed from joint and adjacent area by flushing with a jet of water, and by use of other tools as necessary.
b. Sealing. Immediately before sealing, the joints shall be thoroughly cleaned of all remaining laitance, curing compound, and other foreign material. Cleaning shall be accomplished by sandblasting. Sandblasting shall be accomplished in a minimum of two passes. One pass per joint face with the nozzle held at an angle directly toward the joint face and not more that 3 inches from it. Upon completion of cleaning, the joints shall be blown out with compressed air free of oil and water. Only air compressors with operable oil and water traps shall be used to prepare the joints for sealing. The joint faces shall be surface dry when the seal is applied.
605-3.3 INSTALLATION OF SEALANTS. Joints shall be inspected for proper width, depth, alignment, and preparation, and shall be approved by the Engineer before sealing is allowed. Sealants shall be installed in accordance with the following requirements:
[Hot Poured Sealants. The joint sealant shall be applied uniformly solid from bottom to top and shall be filled without formation of entrapped air or voids. A backing material shall be placed as shown on the plans and shall be nonadhesive to the concrete or the sealant material. The heating kettle shall be an indirect heating type, constructed as a double boiler. A positive temperature control and mechanical agitation shall be provided. The sealant shall not be heated to more than 20°F ( 11°C) below the safe heating temperature. The safe heating temperature can be obtained from the manufacturer's shipping container. A direct connecting pressure type extruding device with nozzles shaped for insertion into the joint shall be provided. Any sealant spilled on the surface of the pavement, structures and/or lighting fixtures, shall be removed immediately.]
[Cold Applied Sealants. Cold applied joint sealing compound shall be applied by means of pressure equipment that will force the sealing material to the bottom of the joint and completely fill the joint without spilling the material on the surface of the pavement. A backing material shall be placed as shown on the plans and shall be nonadhesive to the concrete or the sealant material. Sealant that does not bond to the concrete surface of the joint walls, contains voids, or fails to set to a tack free condition will be rejected and replaced by the Contractor at no additional cost. Before sealing the joints, the Contractor shall demonstrate that the equipment and procedures for preparing, mixing, and placing the sealant will produce a satisfactory joint seal. This shall include the preparation of two small batches and the application of the resulting material. Any sealant spilled on the surface of the pavement, structures and/or lighting fixtures, shall be removed immediately.]
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The use of a backup material or bond breaker in the bottom of the joint to be filled is recommended to control the depth of the sealant, to achieve the desired shape factor, and to support the sealant against indentation and sag. Backup materials and bond breakers should be compatible with the sealant, should not adhere to the sealant, should be compressible without extruding the sealant, and should recover to maintain contact with the joint faces when the joint is open.
Jute, paper, or other moisture absorbing material shall not be used for the backing material. The backing material shall be rubber, butyl rubber, or other approved material that will not react with the joint sealer and will not form a gas when the hot joint sealer is applied.
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The Engineer should select either hot poured or cold applied sealant and include the appropriate paragraph in the specifications.
Insert:
“both non-reactive and…”
before:
“…non-adhesive to the concrete…” in the second sentence of each paragraph regarding hot poured and cold applied sealant.
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METHOD OF MEASUREMENT
605 4.1 Joint sealing material shall be measured by the [gallon (liter)] [pound (kg)] [linear foot (meter)] of sealant in place, completed, and accepted.
BASIS OF PAYMENT
605-5.1 Payment for joint sealing material shall be made at the contract unit price per [gallon (liter)] [pound (kg)] [linear foot (meter)]. The price shall be full compensation for furnishing all materials, for all preparation, delivering, and placing of these materials, and for all labor, equipment, tools, and incidentals necessary to complete the item.
Payment will be made under:
Item P 605 5.1 Joint Sealing Filler – per gallon (liter)
Item P 605 5.2 Joint Sealing Filler – per pound (kg)
TESTING REQUIREMENTS
ASTM D 412 Test Methods for Vulcanized Rubber and Thermoplastic Elastomers – Tension
ASTM D 1644 Test Methods for Nonvolatile Content of Varnishes
MATERIAL REQUIREMENTS
ASTM D 1854 Jet Fuel Resistant Concrete Joint Sealer, Hot Applied Elastic Type
ASTM D 3406 Joint Sealants, Hot Applied, Elastomeric Type, for Portland Cement Concrete Pavements
ASTM D 3569 Joint Sealant, Hot Applied, Elastometric, Jet Fuel Resistant Type, for Portland Cement Concrete Pavements
ASTM D 3581 Joint Sealant, Hot Applied, Jet Fuel Resistant Type, for Portland Cement Concrete and Tar Concrete Pavements
ASTM D 5893 Standard Specifications for Cold Applied, Single Component, Chemically Curing Silicone Joint Sealant for Portland Cement Concrete Pavements
ASTM D 6690 Joint and Crack Sealants, Hot Applied, for Concrete and Asphalt Pavements
FED SPEC Sealants, Joint, Two-Component, Jet-Blast Resistant, Cold Applied
SS-S-200E(2)
END ITEM P-605
