September 2012 Newsletter

In this Issue
 
President's Message

9/19 Presentation by Ken Hover: "Maximizing Advantages & Minimizing Disadvantages of Coal Fly Ash in Concrete"
 
Other Updates
 

Certification Exams 9/26 & 9/27

-ACI Field Testing Technician Grade I
-
ACI Concrete Construction Special Inspector

Please visit the Events page on the ACI CNY website for more information.

The registration deadline is 9/13.

If you have any questions about certification, contact Niel Zuern.

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Membership Renewal Due 10/1

Current members will be sent a reminder via email.

If you have any difficulty renewing your ACI CNY membership, please email Amanda Latreille.

Sponsors
 

Special thanks to our 2011-2012 sponsors:

Atlantic Testing Laboratories

CME Associates, Inc.

Essroc - Italcementi Group

Jefferson Concrete Corp.

Klepper, Hahn & Hyatt

Precast Concrete Association of New York

Propex Concrete Systems

PW Laboratories, Inc.

Ryan Biggs Associates

SJB Services, Inc.

Whitacre Engineering Corp.

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President's Message

Greetings! I hope everyone took advantage of the beautiful summer we had this year. The ACI CNY Board has been hard at work over the past few months planning the upcoming season of chapter events culminating with our annual awards banquet next April. We have put together an exciting lineup of educational and awards programs including a self-consolidating concrete demonstration and a masonry plant tour. Take a look at our schedule of events for more details (see right).

Last year, we unveiled a new website with some exciting interactive features including online membership renewals and dinner registrations. The new format was a success and a benefit to our members and the ACI CNY Board. In the next few weeks, you will receive an email notification for your membership renewal. Please take a few minutes to review the multiple options for renewal. You will notice we have a new option that bundles the awards banquet sponsorship with your membership renewal and chapter sponsorship. As always, we greatly appreciate your sponsorship and continued chapter support.

We kick off this season with an exciting presentation on fly ash presented by none other than Ken Hover. As you know, Ken is fresh off his stint as ACI President. He has been a regular presenter for our chapter, and we are very pleased to have him speak. Please join us on the evening of September 19th at the DoubleTree Hotel in East Syracuse. I hope to see you all there!

Christopher N. Latreille, P.E.
ACI CNY Chapter President

9/19 Presentation by Ken Hover: "Maximizing Advantages & Minimizing Disadvantages of Coal Fly Ash in Concrete"

4:30 PM Board Meeting
5:30 PM Registration
6:00 PM Presentation & Dinner

$35 Member
$45 Non-member
$15 Student

Registration:

Click here to register/pay online. Or send an email to Amanda Latreille with the number of people attending from your company or organization. You willl need to bring cash or check to the event for payment.

Registration is due by 9/13.

Program description:

Coal fly ash means economical, sustainable, value-added concrete construction. Incorporating coal fly ash in concrete improves workability, pump-ability, and finish-ability in fresh concrete, reduces water content and bleeding, and lowers heat of hydration and the risk of thermal cracking. Coal  fly ash lowers the water/cementitious-materials ratio leading to lower permeability and increased service life. Fly ash can reduce vulnerability to alkali-silica reaction, reduce the white-staining called “efflorescence,” and can achieve all these benefits to fresh and hardened concrete while consuming a byproduct of electrical power generation and lowering the carbon footprint of cement and concrete. Coal fly ash is a key contributor to the sustainability of concrete.

But including ash in the mixture can modify setting time, which in combination with lowered bleeding rate can modify the window of finish-ability and increase fresh concrete’s susceptibility to plastic shrinkage cracking. Variable amount and form of carbon in the ash can interact with air-entraining admixtures, leading to variable air content whenever ash composition is also variable.  The combination of the impact of fly ash on setting, finishing, air entrainment and dependence on  good curing means that in the harsh upstate NY environment, the combination of fly ash and care in construction need to be integrated to produce a long-lasting, deicer-scaling-resistant concrete surface. But too much ash, too little care, or a winter than comes too cold or too soon can combine to contribute to an unsatisfactory surface.

For all of its proven benefits as a key ingredient in environmentally responsible and sustainable concrete construction, coal fly ash is at the center of EPA’s hazardous-waste controversy. Initiated by a landfill landslide, questions are arising about the chemical composition of the coal ash, which is derived from, and is as variable as, the composition of the coal itself. Like everything else that is pulled from the earth, the coal that precedes the ash is made of pretty much everything that the planet is made of, and some of those elements are concentrated when the carbon is burned away. But, are the amounts of potentially hazardous elements contributed by the ash any greater than the amounts contributed by other concrete-making and construction materials?  And, are any such potentially hazardous materials taken out of the game when encapsulated inside a dense, low-permeability fly-ash concrete?

Presenter:

Ken Hover is Immediate Past-President of the ACI and Professor of Civil & Environmental Engineering at Cornell.  He served as a Captain in the 15th Combat Engineer Battalion, U.S. Army, and was Project Engineer and Project Manager for Dugan and Meyers Construction Co. in Cincinnati, working on buildings, interstate bridges, and water treatment plants. Joining THP Ltd. in Cincinnati, he became partner and manager engaged in structural design, specifications writing, and contract administration. He holds Bachelors and Masters Degrees in Civil Engineering from University of Cincinnati, and the Ph.D. in Structural Engineering from Cornell University.

Ken teaches reinforced and prestressed concrete design, concrete materials, and construction management. His research focuses on freeze-thaw durability, mixture proportions and ingredients, behavior and testing of fresh concrete, and the impact of construction operations and construction environment on concrete quality.

Ken is a P.E. in Ohio and New York, and holds the Outstanding Educator Award from ACPA, and from ACI he has earned the Kelly, Philleo, Anderson, and Structural Research Awards. He received the ASCE Materials Division Best Basic Research Paper Award.  He holds Cornell University’s highest teaching award, and has been named one of the “Ten Most Influential People in the Concrete Industry.”

 
 

Save the Dates!
2012-2013 Wednesday
Programs

  9/19/12 
"Maximizing Advantages & Minimizing Disadvantages of Coal Fly Ash in Concrete" presented by Ken Hover (see registration info below, center column)

  10/24/12 
Self-Consolidating Concrete Demonstration at Whitacre Engineering Corp.

  11/14/12 
Masonry Plant Tour at Barnes & Cone

  1/23/13 
"Concrete Pavements: An Even Better Investment Today" presented by Douglas O'Neill

  2/27/13 
Concrete Repair presented by Christopher Latreille

  4/3/13 
Design & Installation Awards Banquet

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Award Winners

Please check out the 2011 Design & Installation Award winners on the Awards page.

Congratulations to the many recipients!

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