The Achilles' heel of concrete pavement is the joint, due to joint failure which is often the result of corrosion of the steel dowel bar. Fiberglass Dowels will never rust, meet shear capacity ASTM and ACI requirements and may reduce fatigue stresses in the surrounding concrete.
ELECTROMAGNETICALLY TRANSPARENT
REDUCE FATIGUE STRESSES
IMPERVIOUS TO CORROSION
Aslan™ 600 Fiberglas™ Dowel Bars are used as a “Load Transfer” device between joints in concrete slabs. They provide a mechanical connection between slabs but allow for horizontal contraction and expansion of the slab itself. This results in lower deflections at the joints and reduced slab stresses. The Achilles heel of concrete pavement is the joint. Joint failure is often the result of corrosion of the steel dowel bar. Aslan™ 600 Fiberglas™ Dowels will not rust or corrode, locking a concrete joint together or causing spalling of the surrounding concrete. In addition, 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. Fiberglass Dowels are also electromagnetically transparent and frequently used in high-speed toll collection areas near inductance sensors. Since 1993, we have been at the forefront of worldwide academic and industry efforts to define consensus FRP standards and methods.
Jointed Rigid Pavement | Dowel Bar Retro Fits | High Speed Tolling Areas with Electromagnetic Sensitivities | Automatic & Wire Guided Vehicle Areas | Canals and Desalination Input Channels | Magnetometer Isolation Pads
| Dowel Diameter | Nominal Area | Unit Weight/Length | Longitudinal Shear Strength Per ASTM D4475 Short Beam Shear | Transverse Shear Strength Per ASTM D7617 Double Shear | Transverse Shear Strength | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | in | mm² | in² | kg/m | lbs/ft | MPa | psi | MPa | psi | kN | lbs |
| 16 | 5/8 | 198 | 0.307 | 0.447 | 0.30 | 42.1 | 6,100 | 151.7 | 22,000 | 30.0 | 6,754 |
| 19 | 3/4 | 285 | 0.442 | 0.566 | 0.38 | 46.9 | 6,800 | 151.7 | 22,000 | 43.3 | 9,724 |
| 25 | 1 | 507 | 0.785 | 0.967 | 0.65 | 58.6 | 8,500 | 151.7 | 22,000 | 76.8 | 17,270 |
| 32 | 1 1/4 | 792 | 1.227 | 1,563 | 1.05 | 58.6 | 8,500 | 151.7 | 22,000 | 120.1 | 26,994 |
| 38 | 1 1/2 | 1160 | 1.800 | 2,456 | 1.65 | 60.0 | 8,700 | 151.7 | 22,000 | 176.1 | 39,600 |
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. The data contained herein is considered representative of current production and is believed to be reliable and to represent the best available characterization of the product as of July 2011. Transverse shear test is per ASTM D7617 which has superseded the ACI 440.3R method B.4.
| Material Properties per ASTM D7205-06 | The “Shear Strength”, typically the “Transverse” or “Double Shear” strength of the Aslan™ 600 Fiberglas™ 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 |
| Transition Temperature of Resin Tg | > 230°F (110°C) per DSC method |
| Applications |
|
| HB 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 |
Field cutting of Aslan™ 600 Fiberglas™ Dowels 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 Aslan™ 600 Fiberglas™ Dowel ends is NOT necessary. Greasing of Aslan™ 600 Fiberglas™ Dowels is NOT necessary (the bond strength to concrete is sufficiently low.)
The following high strength structural adhesives are recommended for use. • 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.
Aslan™ 100 Fiberglas™ bar is made using a vinyl ester resin matrix with E-CR glass fibers. With 1/4 the weight of steel rebar, this product exceeds the requirements of ASTM D7957 Standard specifications for solid round glass fiber reinforced polymer bars for concrete reinforcing.
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