Highlights from the May Dinner Meeting

UMD CONCRETE CANOE CREW COMMANDEERS ICRI MEETING

by Tommy Dacanay, Walter P Moore

The ICRI Baltimore Washington Chapter was treated to a presentation by Wing-Mei Ko and Vasilios Plangetis of the University of Maryland’s Concrete Canoe Team on their award-winning boat. Their 2016 entrant received a perfect score and finished every race in the Mid-Atlantic Region competition and was invited to compete at the National Concrete Canoe Competition in Texas.

Ko and Plangetis shared some insight to the process of building their concrete canoe. The project took almost 1,700 person hours to complete, was required to meet the ASTM C-330 standard for lightweight aggregates for 25% of the mix design, and was designed to incorporate recycled materials to improve its sustainability. Aggregate included glass, expanded slate, pumice, and lightweight polymeric spheres, allowing the concrete’s unit weight to be near 70 pcf with a compressive strength around 1,000 psi. Reinforcement including basalt fiber mesh and monofibrillated fiber lent tensile strength to the frame. The team even added an artistic flair, using formwork to separately pour aesthetic mix into inlays and create their 1920s Speakeasy-themed canoe, dubbed Whiskey River.

The UMD duo held a rousing question-and-answer session with ICRI-BWC members following their presentation. They are looking forward to advancing as the next generation of concrete repair professionals, having started a new student chapter of ACI.

The Gaithersburg Marriott Washingtonian Center proved again to be a fine setting for dinner and conversations between both new and lasting acquaintances. The ICRI-BWC looks forward to the numerous events to be held in the remainder of the year.

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