Concrete pavements degrade due to the corrosion of steel dowel bars causing joint failure. Owens Corning® Fiberglas™ Dowel Bars are a proven, non-corroding, lightweight, electromagnetically neutral solution for load transfer between concrete slabs.
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ELECTROMAGNETICALLY TRANSPARENT
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NON-CORRODING
• Fiberglas™ Dowel Bars are used as “load transfer” devices between joints in concrete slabs providing a mechanical connection between slabs while allowing for horizontal contraction and expansion of the slab itself. This results in lower deflections at the joints and reduced slab stresses. <br> <br> • Joint failure is often the result of corrosion of the steel dowel bar. Fiberglas™ Dowels will not rust or corrode, locking a concrete joint together or causing spalling of the surrounding concrete. <br> <br> • While providing the necessary shear capacity at the joint, the lower stiffness of the GFRP Dowels may reduce fatigue stresses in the concrete surrounding the dowel. Fiberglas™ Dowel Bars are also electromagnetically transparent and frequently used in high-speed toll collection areas near inductance sensors.
Owens Corning® Fiberglas™ Dowel Bars are designed for use in a wide variety of applications including: jointed rigid pavement, dowel bar retro-fits, high speed tolling areas with electromagnetic sensitivities, automatic & wire-guided vehicle areas, canals and desalination input channels, and magnetometer isolation pads.
| Dowel Bar Diameter | Nominal Cross Sectional Area | Unit Weight/Length | Longitudinal Shear Strength Per ASTM D4475 Short Beam Shear | Transverse Shear Strength Per ASTM D7617 Double Shear | Transverse Shear Load | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | in | in² | mm² | lbs/ft | g/m | psi | MPa | psi | MPa | lbs | kN |
| 16 | 5/8 | 0.307 | 198 | 0.3 | 447 | 7252 | 50 | 23206 | 160 | 7122 | 32 |
| 19 | 3/4 | 0.442 | 285 | 0.38 | 566 | 7252 | 50 | 23206 | 160 | 10251 | 46 |
| 25 | 1 | 0.785 | 507 | 0.65 | 967 | 7252 | 50 | 23206 | 160 | 18237 | 81 |
| 32 | 1 1/4 | 1.227 | 792 | 1.05 | 1563 | 7252 | 50 | 23206 | 160 | 28488 | 127 |
| 38 | 1 1/2 | 1.767 | 1140 | 1.65 | 2456 | 7252 | 50 | 23206 | 160 | 41005 | 182 |
Values in the above table are Mean Ultimate Values. Transverse shear test is per ASTM D7617. We reserve the right to make improvements in the product and/or process which may result in benefits or changes to some physical-mechanical characteristics.
| Material Properties per ASTM D7205-06 | The “Shear Strength”, typically the “Transverse” or “Double Shear” strength of the Fiberglas™ Dowel Bar product is determined using the ASTM D7617 method. “Longitudinal Shear” or “Short Beam Shear” subjects the bar to a three point loading fixture and measures the shear strength along the axis of the bar. This testing is performed per ASTM D4475. |
|---|---|
| Glass Fiber Content | 70% by weight per ASTM D2584 |
| Moisture Absorption | 24 hour absorption at 122°F (50°C) ≤ 0.25%, per ASTM D570 |
| Sealing of Ends | Not necessary |
| Greasing of FRP Dowels | Not necessary |
| Glass Transition Temperature | 230°F (110°C) per DSC method |
| Applications |
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| Part Number | Concrete Thickness | Dowel Height | Dowel Spacing* | |||
|---|---|---|---|---|---|---|
| mm | in | mm | in | cm | in | |
| DBB1500-12-5 | 254 | 10 | 127 | 5 | 305 | 12 |
| DBB1500-10-6 | 305 | 12 | 152 | 6 | 254 | 10 |
| DBB1500-12-6 | 305 | 12 | 152 | 6 | 305 | 12 |
Field cutting of Fiberglas™ Dowel Bars is generally not necessary. However, if required use a fine blade saw, grinder, carborundum or diamond blade. We use a diamond blade in wet bath for cutting the dowels. Sealing of Fiberglas™ Dowel Bars ends is NOT necessary. Greasing of Fiberglas™ Dowel Bars is NOT necessary (the bond strength to concrete is sufficiently low.)
• Press fit the Dowel into the opening. • Tap the dowel into the basket from the end to secure the dowel into place. • Attach the dowels and baskets to the runners as required.
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