Ultra Dowel – Frequently Asked Questions (Fiberglass Dowel Bars)

What is RCM Ultra Dowel?

RCM Ultra Dowel is a corrosion-resistant fiberglass dowel bar system used in concrete
joints to ensure effective load transfer while allowing for controlled joint movement.
Designed for durability, it outperforms steel in aggressive environments like coastal zones,
industrial slabs, and cold-weather pavements.

What sizes are available?

RCM Ultra Dowel is available in the following standard diameters:
– 5/8”
– 3/4”
– 1”
– 1-1/4”
– 1-1/2”
Standard lengths range from 18" to 24", with custom lengths available upon request.

Do I need to seal the cut ends of RCM Ultra Dowel?

No. Sealing is not required. The bars are made with corrosion-resistant resin systems that
protect the internal fibers, even at exposed cut surfaces.

Can fiberglass dowels replace steel?

Yes. RCM Ultra Dowel meets or exceeds performance requirements for load transfer in
pavements and slabs. It delivers comparable stiffness and shear capacity, without the
corrosion risk associated with steel.

Do RCM Ultra Dowels bond to concrete?

No. RCM Ultra Dowel is designed to have a low bond with concrete to allow proper joint
movement. This behavior mimics steel dowels and prevents restraint-related cracking at
control joints.

What are the primary applications?

RCM Ultra Dowel is used in:
– Highway and airport pavements
– Parking structures and decks
– Bridge approaches
– Port and marine environments
– Industrial slabs and distribution centers

How are RCM Ultra Dowels installed?

With baskets: Supplied preassembled in fiberglass dowel baskets for quick installation.
Insert systems: Installed using sleeves or dowel bar inserters.
Retrofit: Can be drilled and epoxy-anchored into existing concrete slabs. Always maintain
precise alignment.

Can I mix RCM Ultra Dowels with steel baskets or frames?

This is not recommended. To maintain full corrosion resistance and thermal compatibility,
fiberglass baskets should be used. RCM supplies integrated FRP systems.

Do fiberglass dowels corrode?

No. RCM Ultra Dowel is immune to rust, chloride attack, and chemical degradation, making
it ideal for projects requiring 75–100 year service life expectations.

Is RCM Ultra Dowel code compliant and recognized in specifications?

Yes. RCM Ultra Dowel is fully compliant with the latest ASTM D8444/D8444M-24
specification.

What jobsite benefits does RCM Ultra Dowel offer?

Lightweight: Easy to transport and handle
Safe: No rust, sharp edges, or coatings
Durable: No field sealing, no degradation
Efficient: Faster placement with prefab baskets
Economical: Lower life-cycle costs vs. steel

Can I cut RCM Ultra Dowel on site?

Yes. Use a diamond blade or fine-tooth saw. No sealing or coating is needed post-cut. Always wear proper PPE during cutting.

Is RCM Ultra Dowel electrically or magnetically active?

No. It is fully non-conductive and non-magnetic, making it suitable near sensitive
infrastructure, electrical systems, or EMI-sensitive applications.

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