477 ALASKA 2020 SECTION 705
705-2.01 JOINT FILLE RS. Meet AASHTO M 213.
705-2.02 Joint Seala Nt.
Silicone Joint Sealant ASTM D 5893 Hot Pour Joint Sealant (Asphalt, Concrete) ASTM D6690, Type IV
705-2.03 Bridge Seal S.
1.Preformed Strip Seals and Compression Seals . Use preformed seals constructed with only virgin natural pol yisoprene (natural rubber) as the raw polymer in the elastomeric compound. Do not use polychloroprene (neoprene). Use steel extrusions meeting ASTM A709 Grade 36. Galvanize steel extrusions in accordance with Subsection 716- 2.07. Use preformed material meeting the following requirements of ASTM D2000: M4AA 514 A13B13C12F17 Use a lubricant -adhesive for installing preformed strip seals and compression seals meeting ASTM D4070.
a.Certification. Furnish a Certified Test Report from the manufacturer or an independ ent testing laboratory containing a list of dimensional, chemical, metallurgical, electrical, physical, and other required test results of the specified material certifying that the product or assembly has passed all specified tests. Include the following:
1.the project name and number;
2.the manufacturer's name;
3.the name of the product or assembly;
4.a complete description of the material;
5.country of origin;
6.the lot, heat, or batch number that identifies the material;
7.all required test results for the specified material from the same lot, heat, or batch defined in Subsection 705- 2.03.1.a.(6);
8.a statement, signed by a person having legal authority to act for the manufacturer or the independent testing laboratory, that the test results show that the product or asse mbly to be incorporated into the project has been sampled and tested and the samples have passed all specified tests. Tag, stencil, stamp, or otherwise mark all materials or assemblies furnished under certification to the project with the lot number, heat number, batch number, or other appropriate identification, which can be readily recognized and legible, and is identical to the accompanying Certified Test Report.
2.Silicone Expansion Joint Seals . Use materials that conform to the following:
a.Silicone Joint Sealants. 478 ALASKA 20 20 (1) Horizontal Joints . Use formed- in-place sealant composed of 100 percent silicone that is self -leveling, cold applied, and two- part formulation meeting the requirements in Table 705- 1.
2.Vertical Joints . Use formed- in-place sealant composed of 100 percent silicone meeting the requirements of ASTM D5893, Type NS (Non- Sag). Do not use acid cure sealants. Ensure the silicone sealant is compatible with the surface to which it is applied.
b.Bond Breaking Backing Material . Use closed- cell expanded polyet hylene foam backer rod meeting the requirements of ASTM D5249. TABLE 705 -1 SELF -LEVELING SEALAN T REQUIREMENTS Property Requirements Test Method Extrusion Rate Min, 50 mL/minute ASTM C1183 Specific Gravity Min. 1.25 Max. 1.35 ASTM D792 Joint Elongation Min. 600% ASTM D5329 (modified)* Joint Modulus (at 100% elongation) Min. 3 psi Max. 12 psi ASTM D5329 (modified)* * Modify the ASTM D5329 test by using a pull rate of 2 inches per minute and a joint size of 1/2 inch x 1/2 inch x 2 inch.
705-2.04 JOINT MORTAR. Use a mixture of one part portland cement and two parts approved
sand with water as necessary to obtain the required consistency. Use mortar within 30 minutes after its preparation.
705-2.05 FLEXIBLE WA TERTIGHT GASKETS. Ring gaskets (seals):
1.Joining rigid concrete (cast -in-place and precast) pipes, manholes, box sections and other structures:
a.ASTM C443 Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets
b.ASTM C990 Specification for Joints for Concrete Pipe, Manholes, and Pr ecast Box Sections Using Preformed flexible Joint Sealants (Butyl Rubber Sealant)
c.ASTM C1628 Specification for Joints for Concrete Gravity Flow Sewer Pipe, Using Rubber Gaskets
d.ASTM C1619 Specification for Elastomeric Seals for Joining Concrete Structures Class B (oil resistant performance)
2.Joining flexible metal pipe (steel and aluminum):
a.ASTM C443 Specification for Joints for Concrete Pipe and Manholes, Using Rubber Gaskets
b.ASTM C1619 Specification for Elastomeric Seals for Joining Concrete Structures Class B (oil resistant performance)
c.ASTM D1056 Specification for Flexible Cellular Materials -Sponge or Expanded Rubber
1.Type 2- Closed cell rubber 479 ALASKA 2020 (2) Class B -Oil resistance with low mass change
3.Grade 3- Compression- deflection range from 9 to 13 psi Use continuous flat gaskets with thickness 1/2- inch greater than the nominal depth of the corrugation for bands with projections or flat bands and 3/8- inch for corrugated bands.
3.Joining plastic pipe:
a.ASTM D3212 Specification for Joints for Drain and Sewer Plastic Pipes Using Flexible Elastomeric Seals
b.ASTM F477 Specification for Elastomeric Seals (Gaskets) for Joining Plastic Pipe Not less than 50% by volume oil resistant polymer
705-2.06 EXPANDED PO LYETHYLENE. Use closed -cell expanded polyethylene with a density
of at least 2.1 lb/ft3 as determined by ASTM D3575 and with a minimum compressive stress of 9 psi at 25 percent deflection as determined by ASTM D3575. 480 ALASKA 2020 SECTION 706 CONCRETE AND PLASTIC PIPE
706-2.01 NON -REINFOR CED CONCRETE PIPE. Meet AASHTO M 86.
706-2.02 RE INFORCED CONCRETE PI PE. Meet the following:
Round Pipe AASHTO M 170, “Wall B” Elliptical Pipe AASHTO M 207
706-2.03 PERFORATED CONCRETE PIPE. Meet AASHTO M 175.
706-2.04 DRAIN TILE. Meet AASHTO M 178. When specified, provide integral spacer lugs in the
pipe spigot to provide for an annular opening and self -centering feature.
706-2.05 PVC PIPE FO R WATER AND SANITARY SEWER SYSTEMS. Use Polyvinyl Choloride
(PVC) pipe systems manufactured from a compound that meets ASTM D1784 with a cell classification of 12454B. Ensure the entire pipe system is made of materials with a 150 psi rated working pressure. Use pipe with push on type joints and an exterior size compatible with ductile iron fittings. Meet the following: PVC Pipe ANSI/AWWA C 900 or C905 PVC Fittings ANSI/AWWA C 907 Rubber Gasket ASTM F477 Joints ASTM D3139
706-2.06 PLASTIC PIP E. Non- perforated, semi -rigid, smooth- wall pipe meeting the following:
Polypropylene (PP) Storm and Drainage AASHTO M330, Type S or Type D, Sanitary ASTM F2764 Polyethylene (P E) AASHTO M 294, Type S or Type D Polyvinyl Chloride (PVC) ASTM D2680 Acrylonitrile -Butadiene -Styrene (ABS) ASTM D2680
706-2.07 CORRUGATED POLYETHYLENE PIPE. Meet the following for perforated or
unperforated: Culverts AASHTO M 294, Type S or Type D Underdr ains AASHTO M 252
706-2.08 HDPE PIPE F OR WATER AND SANITARY SEWER SYSTEMS. Use high density
polyethylene (HDPE) pipe and fittings manufactured from a PE 3408 resin that meets ASTM D3350 with a cell classification of 345464C. Ensure the entire system is made of materials with a 150 psi rated working pressure, except material two inch or less in diameter shall have a 200 psi rated working pressure. Join all pipe and fittings by either butt fusion or flanges as per manufacturers recommendation. No mechanical j oints are allowed. Meet the following: HDPE Pipe 2” or less ASTM D2737 HDPE Pipe over 2” ASTM F714 Butt Fusion Fittings ASTM D3261 Flanged joints ASTM D3261 When HDPE pipe is used in arctic applications:
Source: Alaska Standard Specifications for Highway Construction, 2020 Edition. Pages 505–507 of 584.