The three days I spent visiting exhibits at World of Concrete trade show felt like a trip to a major museum or browsing the stacks in a university library; everywhere I turned there was something new and exciting to learn.

At the Loos & Co. booth I was introduced to the different types of wire rope and how they are made. My "teacher" went on to regale me about the history of the product from John Roebling's 19th Century Allegheny Portage Railroad to the latest aviation applications.

Yet I may not be able to count any of my 36+ hours at the show towards continuing education units (CEU) I need to maintain my architectural license or my certified construction specifier status. The continuing education criteria, established by state licensing boards and administered by AIA and other groups, are complex and impose burdensome paperwork requirements to get courses approved. While CEU can be earned through self-study, the design professional has to substantiate the educational value and an individual's initiative can be denied by regulators.

Cemex and several other organizations conducted a demonstration of roller compacted concrete and discussed quality control measures. While I had read about the technique, seeing it being installed was highly educational.

The educational value went beyond ordinary commercial transactions and networking to become brief master classes taught by the recognized authorities in their particular fields. When traffic in the booth was light, they would gladly spend a few minutes holding forth. The examples on this page are but a few of the many lessons received. Note that many of them would have earned me the more stringent health, safety, and welfare (HSW) credits if they had been presented in an approved course.

A gentleman form Oklahoma Wire and Steel took time to explain that concrete reinforcing is produced in coils. Fabricators either straighten the material and cut it to length, or they fabricate it into stirrups, rings, or the other shapes required on a construction site. Huge machines have largely replaced manual methods of cutting and bending rebar.

Many trade shows have concurrent classes that offer CEU credits. My argument is that this should be expanded to give credits for time spent on the trade show floor. Exhibitors are the financial underpinning of trade shows and want to maximize attendance.So it is in the interest of the building products industry to establish procedure for attendees to earn CEUs while visiting the show floor. Alternatively, show producers or trade association sponsors could take the lead in negotiating this change in CEU criteria.

Even though they knew I was not a potential customer for their equipment, the pair working the Sensocrete booth explained, with great passion, how to improve quality control of concrete.

One can argue that some trade show visitors are more interested in swag or social interactions than in educational benefits. But these same individuals can sit through a lunch time course and get nothing out of it but calories and an unjustified CEU.

Continuing education requirements are based on hour-long classes. Trade show lessons are necessarily brief, but no less powerful It took the rep at BASF only a few minutes to explain how their new "crack-reducing admixture" challenges fundamental assumptions about concrete performance and give me a sizable nugget of knowledge to digest.

The CEU divines differentiate CEU programs that involve face-to-face exposure with a qualified instructor from "distance learning activities" like reading an article or watching an online video. Distance learning activities require students to pass a ten-question quiz to demonstrate that they understand the material presented. Perhaps this model can be used for awarding credit for trade show time; attendees would have to submit a declaration of what they learned at the show. Another approach would be to discount show attendance so that an hour on a trade show floor would be worth only a quarter of a CEU.

A one-on-one master class with an Ward Malisch from the American Society of Concrete Contractors provided an authoritative answer to my question about cement hydration. Figure above, from NIST, shows "concrete at four different length scales: upper left is concrete, upper right is mortar, lower left is cement paste, lower right is C-S-H." (See earlier post)

Are you ready to mount a campaign to accomplish this? Give me a call so we can plot strategy.