Panther Village, Cedar Falls, IA
DE Fiberworks, Inc. - Concrete Fiber Reinforcement
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Panther Village, Cedar Falls, IA

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1. HPS 950 – Panther Village, Cedar Falls, IA is a newly constructed residence hall at the University of Northern Iowa. Panther Village offers apartment-style living strictly for college juniors and seniors who still want to live within minutes of their classes. The upper floors of Panther Village include HPS 950, a macro/micro-synthetic fiber system at a dosage rate of 5.0 lbs./cubic yard of concrete.
Description

 

 

HPS 950 Macro/Macro Blend Concrete Fibers

 

Panther Village, Cedar Falls, IA is a newly constructed residence hall at the University of Northern Iowa. Panther Village offers apartment-style living strictly for college juniors and seniors who still want to live within minutes of their classes.  The upper floors of Panther Village include HPS 950, a macro/micro-synthetic fiber system at a dosage rate of 5.0 lbs./cubic yard of concrete.  The project structural engineering firm, JP-SE, LLC, from Des Moines, IA approved HPS 950 as an alternate to welded wire fabric reinforcement for the topping slabs over precast planks. InVision Architects of Waterloo worked with the university to think of everything a student might need – including the use of concrete construction that provides virtually sound proof rooms for studying.  Larson Construction from Independence, IA was the concrete contractor and Manatt’s Inc. supplied the concrete.

 

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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.