Association News

A Look Ahead to Upcoming Trade Shows

ACPA and its industry allies will be once again exhibiting at two well-attended events coming up this month and next.  

  • ACPA, NRMCA, and PCA will be exhibiting jointly at the upcoming Public Works Exposition or PWX.  Formerly the American  Public Works Association Congress and Expo, the PWX show reaches public works directors and other key personnel involved in public works projects across North America.   The show is scheduled for August 27 through 30 at the Orange County Convention Center in Orlando, Fla.   Look for us at booth #700.
  • ACPA, NRMCA, and PCA also will be exhibiting jointly at the AASHTO Annual Meeting,  which draws state Department of Transportation officials and other AASHTO members from across the United States.  The meeting will be held from September 25 through 28 at the Sheraton Grand Phoenix, in Phoenix, Ariz.  The meeting includes exhibits by leading transportation concerns.  Look for us in booth #510.  

Looking for other industry meetings & events?  Visit our events calendar at http://acpa.org.  To add a meeting or event, contact Debbie Becker by email at dbecker@acpa.org.

Wikipave Post of the Month: Early Cracking of Concrete Pavements

The “scratch test” is a time-tested method for determining the proper sawing window, a key to crack control.

This month’s featured Wikipave post addresses the phenomenon of early cracking.  As noted, not all cracks in concrete are indicative of serious problems, but the key is recognizing crack control methods and avoiding issues that contribute to early cracking.

Concrete expands and contracts with variations in temperature. Concrete shrinks as it cures. Concrete slabs curl and warp from temperature and moisture gradients from the top to the bottom of the slab. These natural responses cause concrete pavement to crack at fairly regular intervals. The key is to introduce a jointing system to control the location of this expected cracking. 

This detailed encyclopedic listing covers the most common causes of early cracking, crack control factor, and the factors associated with the formation of uncontrolled cracks.   The listing also includes  job site adjustments and specifications, including recommended specification language.   View the early cracking entry online at:  http://wikipave.org/index.php?title=Early_Cracking

About Wikipave
First introduced in February 2015, ACPA’s Wikipave is the largest-scale technology transfer, knowledge transfer, and educational initiative ever pursued by the Association.  Content is drawn from more than 50 years of technical bulletins, engineering bulletins, and other resources developed by the Association.  New content and updates are added frequently, and since its inception, the resource has nearly doubled in terms of amount of content.

The website is digital-device ‘friendly,’ which makes it an exceptional resource in the office or in the field.   To see the main site, visit http://wikipave.org.

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Wikipave is a trademark of the American Concrete Pavement Association, Rosemont, Ill.

ACPA, Industry Allies Show Support for Airport Funding

ACPA recently co-signed letters in strong support of airport construction funding, notably to urge Congress to adjust the Passenger Facility Charge on originating passengers, as well as to boost the Airport Improvement Program by $250 million for a total of $3.6 billion in funding.

The letters, sent prior to the current August recess, urged House and Senate Appropriations Chairs and Ranking members to support additional funding in the respective versions of the “Transportation, Housing and Urban Development” (THUD) appropriations bills.  The two letters were sent by:

These letters cited long overdue increases to aviation infrastructure funding, and noted the revenue increases will support critical infrastructure projects for U.S. airports.  

The Senate passed its version of the THUD Bill on July 25; the House version is pending the current August recess, which is scheduled to end September 5.  

ACPA and other coalition partners will continue to advocate for increased airport construction funds.   The FAA bill, formally the “FAA Modernization and Reform Act” of 2012, has been extended by several short-term measures, the most recent of which is set to expire on September 30.

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* The Highway Materials Group is comprised of the American Coal Ash Association, American Concrete Pavement Association, American Traffic Safety Services Association, Associated of Equipment Distributors, Association of Equipment Manufacturers, Concrete Reinforcing Steel Institute, National Asphalt Pavement Association, National Ready Mixed Concrete Association, National Stone, Sand & Gravel Association, Portland Cement Association, and the Prestressed/Precast Concrete Institute.

 

 

ACPA, ISCP to Offer Webinars in Spanish

ACPA and the International Society for Concrete Pavements will present a four-part “Meganar” series in Spanish.  The four-part series, “Overview of Concrete Pavement Design, Construction, Performance, and Evaluation,” will be presented during late August and early September.   

The webinars will each last approximately 75 minutes, and are scheduled for 10:00 to 11:15 a.m. (CDT)11:00 a.m. to 12:15 p.m. (EDT)  | 15:00-16:15 UTC on each of the following dates:

  • August 29Part 1: Types of Concrete Pavement: Structures and Functions, presented by Dr. Jeffery Roesler, P.E., CEE Professor at University of Illinois Urbana-Champaign and President, International Society of Concrete Pavements.
  • August 31Part 2: Mechanistic-Empirical Design Basics for Concrete Pavements, presented by Juan Pablo Covarubias, General Manager, TCPavements Ltda.
  • September 5Part 3: Modern Construction Process and Technology for Concrete Pavement, presented by Juan Pablo Covarubias, General Manager, TCPavements Ltda.
  • September 7Part 4: Concrete Pavement Evaluation and Measurement Methods, presented by Dr. Erwin Kohler, General Manager, 3ipe.com & ISCP Board of Directors.

 To download a copy of the flyer (in Spanish and  English), please follow this link: https://www.concretepavements.org/wp-content/uploads/2017/04/ISCPFLYER_JULY27FINAL.pdf.   For additional information, including costs, discounts, and registration information, please follow this link:  http://www.acpa.org/upcoming-webinars-meganars-and-workshops/.

ISCP members are encouraged to visit the ISCP’s webinar page prior to registering on the ACPA registration page noted above.

Event Commemorates 1891 Pavement Test Strip

Public officials, industry representatives, local citizens, and special guests gathered in Bellefontaine, Ohio, for a ribbon-cutting to mark the completion of a replica of the test strip constructed prior to the construction of the first concrete street in America.

The replicated section is an 11-foot section of pavement, which features “dimples” to replicate the texture of the original test section built by George Wells Bartholomew Jr.  While the original test strip was originally used as a horse hitching post, the replicated section is part of a project to revitalize the downtown area with a new outdoor patio expansion to a pizzeria.  

“All concrete roads lead to Bellefontaine,” proclaimed Jerry Voigt, P.E., President and CEO of the American Concrete Pavement Association, as he spoke to a crowd gathered along the city’s Main Street for a special ceremony in mid-July.

Voigt thanked Bellefontaine Mayor Ben Stahler and the City of Bellefontaine for their commitment to preserving their heritage, which is also important to the concrete pavement industry’s heritage.   The impressive concrete super-highways of this nation are descendants of the first concrete pavements in the nation, including Bellefontaine’s new replica of the original test section and Court Avenue, which was constructed in 1893. 

“Thank you Mayor Stahler for not forgetting the historical significance of your concrete streets to the nation and to the industry born from the nation’s first concrete pavement,” he said. “The test strip first placed by George Bartholomew was the trial product,” Voigt said, reflecting on the risk taken by Bartholomew and the City of Bellefontaine more than 125 years ago.  The original pavement holds the distinction of being the first two-lift concrete construction and the first warranted pavement.  Bartholomew believed so strongly in the product that he posted a personal bond of $5,000 (the equivalent of more than $146,850 today).[1]  

In addition to the Mayor, the City of Bellefontaine, and the Bartholomew family, Voigt also thanked the sponsors who made both the replicated test strip and the event possible.  Mayor Stahler presided over the ceremony, including a ribbon-cutting, and also thanked members of the Bartholomew family, public works officials, and representatives of the cement and concrete industries.

Kate Quickel, the great-great-granddaughter of George Bartholomew on behalf of other family members, including Nancy Bartholomew, wife of George Bartholomew’s late grandson; Susan Bartholomew Manecke (great-granddaughter); and Ellie Bartholomew Bates, the first member of the sixth generation of the family.[2]

The test strip was an idea developed during the 125th anniversary celebration of the first concrete street in April 2016, according to Mark Pardi, Field Engineer/ACPA Ohio Concrete Chapter Representative.

“Every generation should be made aware of the importance of the first concrete street in Bellefontaine, Ohio, made possible by Mr. Bartholomew,” he said, adding, “Under the leadership of Mayor Stahler and his staff, the next page is written, and now this generation has a new reminder, a replica of the nation’s first concrete pavement.”

Pardi also said that the fundraising effort also allowed the development of a commemorative brass plaque, as well as a planned restoration of the original vellum/canvas plan that resides at the Bellefontaine City Office.

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[1.] Source:   Federal Reserve Bank of Minneapolis:  https://www.minneapolisfed.org/community/teaching-aids/cpi-calculator-information/consumer-price-index-1800.

[2.] Source:  “Replica of 1891 concrete work dedicated in city,” by Reuben Mees, BELLEFONTAINE EXAMINER, July 13, 2017.

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* Sponsors

This project and this special event were made possible by the generous contributions of the following organizations and individuals:

Corporate Sponsors

  • The American Concrete Pavement Association
  • ACPA Chapter/State Paving Associations
  • Great Lakes Cement Promotion Council**
  • LafargeHolcim

In-Kind Contributors

  • City of Bellefontaine, Ohio
  • Ohio Ready Mix, Inc.
  • Marys Cement, Inc.
  • Yoder Concrete Construction, LLC                 

Individual Contributors

  • Greg Colvin, Ohio Concrete Association
  • Bill Davenport, ACPA
  • Mark Pardi, Ohio Chapter-ACPA
  • Larry Scofield, IGGA/ACPA
  • Kurt Smith, Applied Pavement Technology
  • Shiraz Tayabji, Applied Research Associates

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 ** The Great Lake Cement Promotion Council, Inc. represents the following member companies: Buzzi Unicem Cement Company, Cemex, Continental Cement Company, Lehigh Hanson, and St. Marys Cement Company.

 

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