"Variability in Testing Fresh Concrete..." by Dr. Ken Hover on 9/26!
Worth 1.0 PDH! Registration due THURSDAY! Click here for more info.
ACI CNY Newsletter
Hello ACI CNY!
Where has the summer gone? As I write this, it is 51 degrees and raining. Yes - fall is in the air, and with it, the anticipative glow of our 2018/2019 presentation season!
We invite all of you armchair concrete sampling technicians to sign up for Dr. Ken Hover’s presentation on Wednesday, 9/26 "Variability in Testing Fresh Concrete: When to Throw the Challenge Flag." This also offers a PDH thanks to our PDH sponsor Klepper, Hahn & Hyatt!
While you are marking your calendars, pencil in these dates as well:
9/26: "Variability in Testing Fresh Concrete..." (Ken Hover)
10/17: Whitacre Tour (Liverpool)
11/12: CNY Engineering Expo (ACI CNY will again have a booth)
11/28: Masonry IQ from CAD Blocks (Tom Cuneio)
1/16 (Topic TBD)
2/27: ACI Certification Now and in the Future (Michael Morrison, ACI National)
4/3: ACI CNY Awards Banquet
Remember there are numerous benefits to joining our local ACI chapter, but continuing education is probably near the top of that list. To make sure that you are getting everything you can out of your ACI membership, here is information on how to redeem any continuing education tokens you may have:
Click here to download the "Accessing a Course: Using ACI University Token" PDF.
That’s all for now!
We hope to see you on 9/26!
John Pillar, P.E., S.E.
ACI CNY President
Join Us! Wednesday, 9/26
"Variability in Testing Fresh Concrete: When to Throw the Challenge Flag" (with Dinner)
Presented by Dr. Ken Hover
East Syracuse, NY
4:30 PM Board Meeting
5:30 PM Registration
6:00 PM Presentation & Dinner
(provided by the DoubleTree)
***Worth 1.0 PDH (sponsored by Klepper, Hahn & Hyatt!***
We make important decisions on the basis of concrete test results, but when making decisions with cost, time, quality, and safety consequences, it is always useful to verify the data. Professional Football is not the only game where wins and losses depend on an official’s call, and it is not the only game where a coach is permitted to “Throw the Challenge Flag.” Our ASTM standards require a “Check-Test” when a single result appears to be out-of-spec. But why might we get different results from two tests from the same truck? For starters, assuming skilled testing professionals and calibrated equipment, all concrete inside the truck drum is not the same. In an 8 CY load you could take 1,236 possible slump tests and 864 possible air tests, and take over 1,500 temperatures, and it would not be reasonable to expect that they would all show identical results. But even more than the routine inhomogeneity of the concrete is the fact that slump, apparent-air, and temperature change with time, depending on mix, admixtures, air temperature, sunshine, haul-time, drum rpm, and added water. This gets really complicated when we start confusing sampling at the truck chute with sampling at the point of placement!
Dr. Ken Hover is Past-President of the American Concrete Institute 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.
Dr. Hover 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.
Dr. Hover 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 in January 2006 was named one of the “Ten Most Influential People in the Concrete Industry.”