manufacturer's name or trade mark, type of sealant, lot number, and date of manufacture. The Department may run any or all tests deemed necessary.
b.Hot Applied Joint and Crack Sealant. Hot Applied Joint and Crack Sealant shall meet the requirements of AASHTO M 324 (ASTM D 6690) for Type I Sealant, or Type II Sealant. Hot Applied Joint Sealant shall be selected from the Department's LIST III-4, "Joint and Crack Sealants". Refer to Subarticle 106.01(f) and ALDOT-355 concerning this list.
c.Cold Applied Joint and Crack Sealant. Cold Applied Joint and Crack Sealant shall be a resilient adhesive compound capable of effectively sealing joints from infiltration of incompressible materials and water throughout repeated contraction and expansion cycles. The sealant, when delivered, shall be capable of being used on the job site and may be placed by machine, pressure gun, or by hand. The compound, when used in other than horizontal joints, shall be capable of conforming to the slope face without sagging. Cold Applied Joint Sealant shall be selected from the Department's LIST III-4, "Joint and Crack Sealants". Refer to Subarticle 106.01(f) and ALDOT-355 concerning this list. The sealant shall be a homogeneous blend of materials, which may or may not require a primer. The sealant shall meet the requirements given in ASTM D 5893.
832.03 Preformed Elastomeric Joint Seals.
a.Compression Seals.
1.General. Compression type elastomeric seals shall consist of an approved seal shape formed from elastomeric material, designed to be installed and function in a compressed state. Installation of this type seal requires the use of a lubricant adhesive. This type seal when used on bridge decks will not require the use of a joint filler material unless such is specified by plan details.
2.Materials. Materials used in fabricating the preformed elastomeric seals shall conform to the requirements of ASTM D 2628 for Concrete Pavement and ASTM D 3542 for Bridges and be of the basic shape, dimension, etc. shown by the plan details. No factory or field splicing of seals in transverse joints 50 feet {15 m} or shorter in length will be allowed. On transverse joints over 50 feet {15 m} in length, one field splice will be considered for approval by the Engineer pending written request from the Contractor. This request shall specify the materials and details of performing the splice. Since the intent is to have one continuous seal meeting the above requirements, absolutely no patching of torn or damaged spots in the seal shall be permitted. In addition to the above, seals for bridge joints (including the joint between the bridge end and the bridge end slab) shall have a depth to width ratio of not less than 1 ( D/W 1). The lubricant adhesive used in installing the compression seals in joints shall meet the requirements of ASTM D 2835 for concrete pavement and ASTM D 4070 for bridge joints.
3.Construction Method. The installation of the seal shall be in accordance with the manufacturer's recommendation, plan details, approved shop drawings, and the following:
a.Sand blast and clean all surfaces of the joint with steel areas cleaned to a "Near White" classification.
b.Prepare joint lubricant adhesive compound and apply to joint.
c.Place sealer without stretching beyond a maximum of five percent elongation.
b.Diaphragm Type Seals
1.Flexible, Unreinforced Elastomeric Type Seal.
a.General. This type seal shall consist of an approved seal shape formed from elastomeric material without metal reinforcement, anchored by mechanical or other acceptable methods to anchor plates cast into or affixed to the joint edges.
b.Materials. The elastomeric material shall conform to the requirements of ASTM D 2628 modified to omit the recovery tests, with or without fiber or other types of acceptable non-metallic reinforcement. The seal shall be of the basic shape and dimensions shown by plan details unless otherwise authorized in writing by the Bridge Engineer. Metal anchor plates shall conform to the requirements of ASTM A 36 or equivalent. Any sealant or lubricant shall conform to the requirements for lubricant adhesive noted in Subarticle 832.03(a) or an approved equivalent.
c.Construction Methods. The installation of the seal shall be in accordance with the manufacturer's recommendations, the plan details, and the approved shop drawings.
2.Flexible, Reinforced Elastomeric Type Seal.
a.General. This type seal shall consist of an approved shape formed from elastomeric material reinforced internally with metal strips with the seal affixed to the bridge deck by the method indicated in the plan details.
b.Materials. The elastomeric material used in the seal shall conform to the following: ELASTOMERIC SEAL SPECIFICATIONS TEST REQUIREMENT TEST METHOD Hardness, Durometer A 45 ± 5 ASTM D 2240 Tensile Strength 1800 psi {12.5 Mpa}, Min. ASTM D 412 Elongation @ break 400% Min. Compression Set, 22 hrs. @ 158 °F {70 °C} 20% Max. ASTM D 395 Method B Low Temperature Not Brittle @-40 °C ASTM D 746 Ozone Resistance, Exposure to 100 ppm {100 mg/l} Ozone for 70 hrs. @ 100 °F {38 °C} Sample under 20% Strain No Cracks ASTM D 1149 Oil Deterioration Volume increase after immersion in ASTM Oil #3 for 70 hrs. @ 212 °F {100 °C} 120% Max. ASTM D 471 Flame Resistance Will Not propagate flame ASTM C 542 Reinforcement ASTM A 36 or equivalent Sealant shall conform to lubricant adhesive in Subarticle (a) or an approved equivalent.
c.Construction Method. Installation of the seal shall be in accordance with the manufacturer's recommendations in the plan details and the approved shop drawings.
832.04 Blank.
832.05 Waterstop Materials.
a.Description. Waterstops shall be of the size and shape shown on the plans. The material may be either neoprene, polyvinylchloride or strip applied expandable waterstop meeting the requirements given in this Section.
b.Neoprene. Physical Requirements.
1.Tensile Strength, Method A using die C – 2000 psi {13.78 MPa} Min., ASTM D 412.
2.Ultimate Elongation, Method A using die C – 360 % Min., ASTM D 412.
3.Type A Shore Durometer Hardness - 65 ± 5, ASTM D 2240.
4.Change in Type A Durometer Hardness, 70 hrs. heat aged @ 158 °F {70 °C} + 15 points Max., ASTM D 2240.
5.Compression Set, Method B, Max permissible change after 22 hrs. heat aged @ 158 °F {70 °C} 30%, ASTM D 395.
c.Polyvinylchloride. Physical Requirements.
1.Tensile Strength, Method A using die C – 1750 psi {12.17 MPa} Min., ASTM D 412. SECTION 833 LUMBER AND TIMBER - UNTREATED AND TREATED
2.Ultimate Elongation, Method A using die C – 300 % Min., ASTM D 412.
3.Type A Shore Durometer Hardness 80 ± 5 ASTM D 2240.
4.Change in Type A Durometer Hardness, 70 hrs. heat aged @ 158 °F {70 °C} + 15 points Max., ASTM D 2240.
d.Strip Applied Expandable Waterstop. Physical Requirements.
1.Specific Gravity – 130-160, ASTM D 71.
2.Penetration - cone at 77 °F, 150 gm, 5 sec, 40 mm ± 5, ASTM D 217.
3.Volatile Matter – 1 % Max., ASTM D 6.
832.06 Drainage Trough Material for Open Type Expansion Dam Units.
Drainage trough material furnished for use shall be a high grade neoprene reinforced with at least two layers of flexible polyester or nylon cord fabric acceptable to the Engineer meeting the following requirements.
1.Fabric reinforcement shall be a close woven material providing equal strength in both warp and fill directions.
2.The finished product shall be of the shape, size, and thickness shown by the plan details meeting the following test: Oil Deterioration - Maximum weight {mass} change of 55% after immersion in IRM Oil 903 for 70 hours at 212 °F {100 °C} - ASTM D 471.
3.Only minimum splicing across the width of the required material will be allowed. Any splice allowed must be performed using materials and in a manner recommended by the producer of the material so as to provide a waterproof, full strength (same as original material) joint through the splice. Samples (12 inch x 12 inch {300 mm x 300 mm} minimum) of the material along with the material data sheet of the producer of the material shall be submitted to the Central Laboratory for approval.
832.07 Blank.
SECTION 833 LUMBER AND TIMBER - UNTREATED AND TREATED
833.01 Structural Lumber and Timber.
Structural lumber and timber shall be Southern Yellow Pine, unless otherwise noted on the plans or in the proposal, meeting the requirements of AASHTO M 168 “Standard Specification for Wood Products”. The grade of structural wood shall be as shown on the plans.
833.02 Preservative Treatment.
Preservatives for treated wood shall meet the requirements of AASHTO M 133 “Preservatives and Pressure Treatment Processes for Timber” and the American Wood Protection Association (AWPA) standards listed in the table below. Commodity Specification Use Category
A.Sawn Products US4B
B.Posts UC4B
D.Poles UC4C
E.Piling UC4C
F.Pressure Treated Wood Composites – Plywood UC4B
F.Pressure Treated Wood Composites – Glue Laminated Timber (Treated after gluing) UC4B
F.Pressure Treated Wood Composites – Glue Laminated Timber (Treated before gluing) UC4A
F.Pressure Treated Wood Composites - Parallel Strand Lumber UC4B
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Source: 2026 Standard Specifications for Highway Construction, 2026 Edition. Pages 706–708 of 826. View official source ↗