807Joint Materials

Joint Materials

807.1Silicone Joint Sealant

1 Provide and use a nonsag or self-leveling, one-part silicone that is formulated specifically for sealing sawed joints in portland cement concrete pavement and in accordance with ASTM D 5893, except as noted in Table 807.1-1, Silicone Joint Sealant Requirements.

Table 807.1-1 Silicone Joint Sealant Requirements Total Limit Test Method Ultimate Elongation 800% min. ASTM D 5893, section 6.9.1 Weathering (UV and ozone resistance) 5000 hours No chalking, cracking, Or bond loss ASTM C 793 Tack Free Time 20 to 75 minutes (nonsag) 180 minutes, max. (self-leveling) ASTM C 679 Specific Gravity 1.01 to 1.515 (nonsag) 180 minutes, max. (self-leveling) ASTM D 792 (Method A) Bond to Concrete Mortar 50 psi [345 kPa] min. (nonsage) 40 psi [275 kPa] min. (self-leveling) (1)(2)

[0.25 mm] of sealant and tested using clips meeting AASHTO T 132. Dry to a constant weight [mass] in an oven at a temperature from 200 ºF to 220 ºF [95 ºC to 105 ºC] and test in tension at a loading rate of 0.3 in/min [7.6 mm/min].

2 Ensure that sealant is delivered in the manufacturer’s original, sealed container with the original manufacturer’s label attached and intact. Ensure that the label is tamper- proof, nonremovable, and legibly marked with the manufacturer’s batch or lot number and the expiration date of the manufacturer’s shelf-life warranty.

3 Before approving sealant for use on department projects based on certification, the department requires the sealant manufacturer to establish sealant performance of less than 1 percent failure, cohesive or adhesive, in one year, on in-place field applications.

4 Provide sealant with a shelf life of six months from the date of manufacture. Do not use sealant that has exceeded the shelf life warranty expiration date; sealant may be retested in accordance with ASTM C 719 and recertified for six months from the retest

Joint Materials SECTION 807

date. Perform retesting at no additional cost to the department; the department will not pay costs incurred in procuring and testing out-of-compliance materials.

807.2Hot-Poured Elastic Sealant

1 Provide and use sealant in accordance with ASTM D 6690 Type I WY Modified or ASTM D 6690 Type IV WY Modified as specified. Use ASTM D 6690 Type I WY Modified if the sealant type is not specified. To enhance performance, materials including recycled rubber and fillers (such as calcium carbonate to prevent rubber particles from sticking together) may be blended into the sealant mixture; do not allow the incorporation of wire, fabric, or other deleterious matter. As applicable, ensure that sealant is in accordance with Table 807.2-1, Hot-Poured Elastic Sealant Specification Limits.

Table 807.2-1 Hot-Poured Elastic Sealant Specification Limits(1) Property ASTM Test Method Sealant Type ASTM D 6690 Type I WY Modified

ASTM D 6690 Type IV WY Modified Min. Max. Min. Max. Cone Penetration D 6690, Type I and IV – 90 90 150 Bond D 6690, Type I 5 – – – Bond 200% extension D 6690, Type IV – – 3 – Relative Density D 71 WY Modified – 1.193 – 1.113 Softening Point °F [°C] D 36 – – 170.0 [77.0] –

807.3Elastic Joint Sealant

1 Provide and use a two-component polyurethane or polysulfide-base product sealant in accordance with the physical flow and strength requirements of ASTM C 920, type M, grade NS, class 25, use T.

807.4Preformed Expansion Joint Filler

1 Provide and use a product in accordance with AASHTO M 213 (ASTM D1751) and punched to admit the dowels.

Joint Materials SECTION 807

807.5Preformed Elastomeric Compression Joint Seals

1 Provide and use a product in accordance with ASTM D 3542, manufactured to a size and shape proposed by the manufacturer after approval by the engineer based on submission of the following:

will be in compression over the temperature range from -40 °F to 120 °F (-40 °C to 50 °C) and

2 When recommended by the manufacturer, use an approved lubricant-adhesive, compatible with the seal, in accordance with ASTM D 2835, to provide lubrication and bond for the seal.

807.6Compressed Joint Material

1 Provide and use open-cell, polyurethane foam impregnated with water-repellant material in a single- or factory-bonded, layered unit. Ensure that the density of the impregnated, compressed, and packaged material is at least 8 lbs/ft 3 [130 kg/m3]. Ensure that the compressed material conforms to the depth and gap size specified. Provide and use adhesive for installation and sealant for splices as recommended by the joint-material supplier. Provide a product approved by the Bridge Program. Store materials in accordance with the supplier’s recommendations.

807.7Backer Rod

1 For installations with silicone sealant, provide and use backer rod in accordance with ASTM D 5249, type 1 or type 3.

2 For installations with hot-poured elastic sealant, provide and use backer rod in accordance with ASTM D 5249, type 1, with a melting temperature higher than the sealant’s application temperature.

807.8Waterstop

1 Provide and use waterstops manufactured from PVC in accordance with US Army Corps of Engineers specification CRD-C572.

807.9Expansion Joint Gland

1 Use an expansion joint system consisting of galvanized steel rails (ASTM A 709 Grade 36, 50, or 50W) and a neoprene gland sized as shown in the contract.

Joint Materials SECTION 807

2 Furnish and automatically end weld the anchor studs to the steel rails. Ensure the welds required to connect the curb miters and to splice the steel rails are shown on the shop drawings. Ensure the welds are completed by the fabricator in the shop except at the field splices approved on the shop drawings.

3 Use galvanized ASTM A 709 (Grade 36, 50 or 50W) steel for the snow plow plates and supporting angles.

4 Use galvanized ASTM A 709 (Grade 36, 50 or 50W) steel for the sidewalk cover plates when required. Use galvanized flat socket head cap screws conforming to ASTM F835 to attach the cover plate.