Theme: SC Traveler 2 Design Improvements 2012 Mystery Canoe failed - - PowerPoint PPT Presentation

Theme: SC Traveler

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Design Improvements

• 2012 ‘Mystery Canoe’ failed during races
• Cracki

cking g in in c concret crete e and r d rupt pturin uring g of rei einforceme cement

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Design Improvements

• Tensile loads on canoe were too much for

reinforced concrete to handle

– Thick concrete layers added extra weight – Weak aluminum reinforcement was not adequate to resist tensile loads placed on it

• Concrete did not bond properly

across reinforcement open area

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Mix ix De Desi sign gn

– Improve workability to allow for better bonding across layers and make it easier to place thin layers – Increase tensile strength and reduce post-curing dryness with a more cohesive mix

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Carb rbon

• n Fi

Fiber er rei einf nfor

• rcement

cement

– Tested against steel and aluminum – Chosen based on high strength, light weight, and flexibility – High percentage open area, reducing risk of delamination

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Construction

• Three concrete, two

reinforcement layers placed in a female foam mold

– Two outer layers 1/8” thick, middle layer ¼” thick

• Strict enforcement of layer

thicknesses to reduce

• verall weight

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Thank You!

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