Expansion Joint Systems

SS1

Preformed Joint Strip Seal:
The SS40 expansion joint system provides versatile movement while maintaining a water-tight seal.  Conforming to ASTM standards, the SS40 joint system consists of a shallow “v” profile elastomeric membrane mechanically and chemically interlocked into steel locking edge rails.  Providing a rated movement of up to 4″, the SS40 is an industry standard design that can be modified to accommodate roadway skews, turn-ups, and laybacks.  Key features include:

  •  Parapet to parapet continuous membrane
  • Membrane convulutions transfer minimal stress across the expansion joint at all movement ratings.
  • Water-tight seal
  • Shop fabricated parapet, sidewalk, and roadway cover plates, when required.

Elastomeric Compression Seals:
Extruded compression seals provide a water tight seal at joint openings for concrete pavements.  Designed with an open web design, elastomeric compression seals apply a constant and uniform compression for the entire range of joint movement.

Non-Preformed Fabric Reinforced Membranes:
Commonly utilized under steel hold down panels, non-preformed fabric reinforced membranes are used to provide 0″ to 4″ of total movement.  The joint membranes are bolted between steel hold down panels and sealed with a lubricant adhesive to ensure a water-tight seal.   The rubber sheeting is reinforced with a one-ply or 2-ply non-wicking woven nylon or polyester fabric.  The membrane is typically fabricated from 1/8″ to 1/4″ thick material and can be shop fabricated for longitudinal and and transverse joint layouts.

Custom Expansion Joint Systems:
We offer innovative solutions for other expansion joint systems including custom steel armor and plate fabrication, pedestrian bridge cover plates, slip-resistant cover plates, sidewalk cover plates, parapet and median cover plates.  For more information please contact us.

 

Product Specifications
Rubber membranes for our strip seal expansion joints conform to ASTM D5973 and have typical properties as listed below:
    Durometer
    Tensile strength, min.
    Elongation at break, min.
    Oven Aging, 70h at 212°
         Tensile strength, loss max.
         Elongation loss, max.
         Duro change
    Oil swell: Method D471
          Weight change, max.
    Ozone resistance: Method D1149
    Low temperature stiffening: Method D2240
         Duro change
    Compression set, 70h at 212°F
    60±5
    2000 PSI
    250%

    20%
    20%
    0 to 10

    45%
    No cracks

    0 to 15
    35%
Compression seals conform to ASTM D3542-82 and have typical properties as listed below:
    Tensile strength, min.
    Elongation at break, min.
    Oven Aging, 70h at 212°
         Tensile strength, loss max.
         Elongation loss, max.
         Duro change
    Oil swell: Method D471
          Weight change, max.
    Ozone resistance: Method D1149
    Low-temp. recovery: 72h at
          14°F, 50% deflection, min.
    Low-temp. recovery: 22h at
          -20°F, 50% deflection, min.
    High-temp. recovery 70h at
          212°F, 50% deflection, min.
    2000 PSI
    250%

    20%
    20%
    0 to 10

    45%
    No cracks

    88%

    83%

    85%
For non-preformed fabric reinforced material specifications, please see:
Fabric Reinforced Elastomeric Troughs
For steel components, please see:
Small Component Structural Steel