University of Miami Fate Bridge - finalist for ACE Award at CAMX 2015

Aslan 100 GFRP bars used in the University of Miami "Fate Bridge" was an award finalist at CAMX 2015 - The composites and Advanced Materials Expo. Enjoy this video submittal from Miami. SEACON - Sustainable concrete using seawater, salt-contaminated aggregates, and non-corrosive reinforcemen

University of Miami "Fate Bridge" uses Aslan 100 GFRP Rebar

Hughes Brothers recently produced some fiberglass rebar in support of our FRP colleague Dr Antonio Nanni for a pedestrian bridge project on the campus at the University of Miami in Florida.

Dr. Nanni explained that a new pedestrian bridge was being build just nearby his offices on campus and what a great hands on opportunity to apply some of the research he has been so instrumental in bringing to life and for his current students to get involved in a hands on way in the construction of a bridge on their campus. 

Being from Nebraska, naturally we are fanatics of the nearby University of Nebraska football Big Red.   On the gridiron, Miami and Nebraska are fierce competitors but in terms of collaboration in making our infrastructure more sustainable, these Nebraskan's work hand in hand with our colleagues at the University of Miami to make longer lasting, more durable and sustainable structures.

A nice article with more details about the project was recently published on the American Composites Manufactures Association web pages found here:

http://compositesmanufacturingmagazine.com/2015/09/miami-students-replace-steel-in-fate-bridge-with-gfrp/?utm_source=Real+Magnet&utm_medium=Publication&utm_term=Industry%20Digest%209/7/15&utm_content=Miami%20graduate%20students%20replace

Drone video Nebraska Dept of Roads - First use of GFRP Rebar in a bridge deck

Nebraska Dept of Roads GFRP reinforced bridge deck from Doug Gremel on Vimeo.

University of Hawaii Manoa students test beams with internal Aslan 100 GFRP bars

In the July issue of Concrete International, you will find a nice article written by Dr. Ian Robertson and Dr. Gaur Johnson of the University of Hawaii where they were instructing students in reinforced concrete design by having groups build beams with different failure modes.  A pair of the beams included reinforcing with Aslan 100 GFRP rebars.

The article is shown here:

Core samples from TxDOT Sierrita de la Cruz creek bridge built in 2000

Recently we had the opportunity to visit our first bridge project, the Sierrita de la Cruz creek bridge built by Texas DOT on Route 1061 about 25 miles north of Amarillo Texas.  

The bridge was built in the summer of 2000 using Aslan 100 GFRP rebars as top mat reinforcing above precast prestress deck panels placed on simply supported concrete bridge girders.  At the time of construction, there was little design guidance, no test methods, nothing resembling a material standard but there was a large measure of common sense and desire to do the right thing.  One of the smart things done was to incorporate a series of "witness bars", put various strain gages and monitoring in place to be able to evaluate the performance of the bridge deck with the novel at the time GFRP rebars.

15 years later, Ryan Koch and I picked up Jason Cox from Missouri S&T and met Mr. Tim Bradberry, the original bridge designer from TxDOT in Amarillo.   Working with some great local TxDOT crews to arrange for traffic control, we were able to successfully take core samples for analysis from the various black steel, epoxy coated steel and GFRP rebar witness samples.

 While most of the samples have been sent to independent labs for Scanning Electron Microscope or SEM, Energy Dispersive X-Ray Spectroscopy or EDX, Chloride depth and pH measurements, there was one sample where the depth of the core was along the same plane as one of the GFRP rebars.   As a result, when we popped the core off, there was a 3.5" loose Aslan 100 GFRP rebar remaining ! 

Coincidentally, for a #5 GFRP rebar, a specimen length of 3.5" for a 5/8" diameter bar is needed to perform a short beam shear or "inter-laminar shear" test per ASTM D4475.  This is a test we do routinely for each production run.  AND, of course we had all the production lot certs on file from 15 years ago that we did at the time of construction.

After 15 years of service in a bridge deck in Amarillo, we can report that the inter-laminar shear or short beam shear properties of the Aslan 100 GFRP rebar are every bit as good as the day they were made !

Thanks to Jason Cox for this skill in extracting core samples.  We are on the path to some excellent, independent, scientific validation that Aslan 100 GFRP rebar will last a very long time helping our nations infrastructure be more durable for very little short term cost.

Professional Education Webinars

Recently, Aslan FRP Applications Engineer Ryan Koch, P.E. gave a lunch and learn to engineers in Honolulu on how to design reinforced concrete structures using the ACI 4401.R design guide.  

A few days prior to the Hawaiian webinar, Ryan travelled to give a similar lunch and learn to Wiss Janney Elstner, one of the nations pre-eminent engineering firms.

If you haven't found the design tools we've recently made available, there are a number of spreadsheet implementations of various aspects of ACI 440.1R design on our web pages here:   http://aslanfrp.com/fiberglass_rebar_designstandards.html

These MS Excel spreadsheets are straight forward implementations of the 440.1R design guide covering aspects of design such as a reinforced concrete beam, development and lap splice lengths, multiple layer reinforced concrete beam design, and some specific ones for using Aslan 100 GFRP rebars in TBM soft-eye openings made of diaphragm slurry walls and bore pile configurations.  Please download the tools and reach out to our engineers to have them walk you through their use if need be.

If you are unfamiliar with the ACI 440.1R design guide or designing your first project using Aslan 100 GFRP rebar, don't hesitate to get in touch with our engineering staff.  Contact links, background on the design support services we offer and some templates that help consolidate the necessary information we require are found on this page as well.

 http://aslanfrp.com/fiberglass_rebar_designstandards.html

If you would like to earn some professional development hours or would like to have a webinar given for your firm, one of our missions is helping you design longer lasting concrete structures with GFRP rebar.  While we are a leading producer of this material, our design webinars are generic in format and similar to the official ACI 440.1R design seminars.

ACI International - Kansas City summary

The ACI International convention in Kansas City was a big success with advancements for he FRP industry on many fronts.

On Sunday, the biennial FRP student beam competition was held in the exhibit area of the convention center.  There were a lot of great GFRP reinforced beams of all configurations from a broad spectrum of universities in the USA, Canada & Mexico.

For the competition, our Jon Fischer and Casey Mattson assisted as judges for the event.

With regards to standards and committee work, there were some important resolutions to the repair document 440.2R with regard to seismic provisions.  In 440-H it was announced that the 440.1R-015 document is now available.   This represents the 4 iteration of the 440.1R design guide and a further maturation of the consensus design advice provided.   The next major milestone is codification of the design guidance.  This effort is well underway under the leadership of Dr. Vicki Brown of Widener University.   During our meetings in Kansas City, Vicki shepherded us through an initial draft of the document and good headway was made on initial chapters of a 440.X-XX code.

A joint meeting of ACI 440-K / ASTM D.30 committee was chaired by Dr. Russ Gentry and Dr. Chuck Bakis.   Most of the discussion centered on advancement of the ASTM D.30 GFRP rebar material spec for solid round GFRP bars like our Aslan 100 series.  We've made great progress in the last several months resolving a number of issues.   Its possible that we are close to resolving most of the sticking points and another ballot iteration will be forthcoming soon.

At the conclusion of the various 440 meetings, we held our FRP Rebar Manufacturers Council meeting chaired by John Busel of the American Composites Manufactures Association.   Our industry efforts to advance the use of GFRP rebar will certainly see more reward as we work together to advance our mutual interests as an industry.   During the meeting, I was elected to be Co-Chair of the FRP-RMC along with Mr. Cam Crawford of Marshall Composites.

Of course, an important part of ACI meetings are the networking, seeing colleagues and sharing our mutual interests in advancing the use of reinforced concrete.   For the past several conventions, we've opted to have a booth so we can share with engineers, academics and friends the developments of our Aslan FRP product line.  Some of us took the opportunity in Kansas City to have a little fun with the formal dress at these functions.  For some reason people kept asking me to get them drinks and park their cars ?