Murphy Tractor & Equipment Co., Inc.
DE Fiberworks, Inc. - Concrete Fiber Reinforcement
563.340.7065

Murphy Tractor & Equipment Co., Inc.

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Murphy Tractor & Equipment Co., Inc. is one of John Deere’s largest North American construction equipment dealer organizations.
Description

Forta Ferro Concrete Fibers

 

Murphy Tractor & Equipment Co., Inc. is one of John Deere’s largest North American construction equipment dealer organizations.  Murphy Tractor has 28 locations throughout the states of Iowa, Kansas, Missouri, Nebraska, Ohio, and Pennsylvania.  Murphy Tractor opened its Altoona, IA location in 2001.  The existing exterior concrete around the service shop area was severely damaged by the constant abuse from large John Deere track equipment and needed replaced.  Rick Yeager, Branch Manager for Murphy Tractor called in Curt Manatt with Manatt’s Inc., Sonny Hall with Absolute Concrete, and Dave Edmundson with DE Fiberworks to determine the best concrete solution that would withstand the abusive equipment traffic & provide a long service life.  The new design for the exterior concrete included Forta Ferro, a macro-synthetic fiber system at a dosage rate of 7.5 lbs./cubic yard of concrete.  Forta Ferro provides “top to bottom” reinforcement for excellent load transfer across the joints.  The high dosage rate also greatly increases the abrasion and impact resistance that the concrete is subjected to by the heavy track equipment.  In 2012, 18,000 square feet of 9” slab-on-grade exterior concrete was supplied and placed by Manatt’s Inc. and Absolute Concrete.  In 2014, Rick Yeager was impressed with the performance of the new concrete and decided to incorporate the same design for the replacement of another 18,000 square feet of old concrete at the Altoona, IA facility.

 

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Did You Know?

Concrete is widely recognized as an extremely versatile, cost-effective construction material?

 

Concrete is widely recognized as an extremely versatile, cost-effective construction material. Yet it is also beset with some drawbacks that are inherent to its composition.  By generally accepted engineering standards, concrete is relatively brittle and lacks ductility.  Intertwined with these problems is concrete’s propensity to crack in both its plastic (early-age) and hardened (long-term) state.  Early-age cracks are microscopic fissures caused by the intrinsic stresses created when the concrete settles and shrinks over the first 24 hours after being placed.  Long-term cracking is in part caused by the drying shrinkage that transpires over time.  In either case, these cracks can jeopardize the overall integrity of the concrete and not allow it to maintain – or possibly ever attain – its maximum performance capability.

 

This is the basic reason reinforcement in concrete is required.  Irregular cracks are unsightly and difficult to maintain but generally do not affect the integrity of the concrete.  Joints in concrete slabs are simply pre-planned cracks that are created by forming, sawing, or tooling.  Concrete slabs that are designed for serviceability typically use reinforcement such as deformed reinforcing steel bars (rebar) or welded wire fabric (WWF) to hold cracks tight.  The primary function for the reinforcement is to maintain aggregate interlock for load transfer and improve joint stability.  Rebar and WWR do not inhibit the formation of cracks, but if properly positioned provide reinforcement once a crack has developed.  Fiber reinforcement can provide the same function, is distributed throughout the cross-section of the concrete and distributes the stresses attributed to shrinkage throughout the panel making the joints much more stable. This distribution of fibers provides a totally reinforced cross-section of concrete and changes the way the concrete works.