Webinar: Improving Recreational Trail Accessibility with a Volcanic Ash Treatment

PRESENTATION ARCHIVE

OVERVIEW

Recreational trails serve as valuable transportation corridors and support the health of users. Wheelchair accessibility of recreational trails depends on a variety of conditions, including slope, cross-slope, and surface characteristics. This project focused on improving the firmness and stability of a 0.2-mile section of trail that was otherwise accessible. The existing trail surface consisted of loose ¼” off-specification aggregate on native soil. A volcanic ash-Portland cement binder, studied in prior research, was batched, distributed, mixed, wetted, and compacted on site to improve the firmness and stability of the surface resulting in a smoother surface with less rolling resistance. The webinar will present details of the trail conditions, materials, batching, placement, and surface characteristics before and after treatment.

KEY LEARNING OUTCOMES

Attendees will be able to:

  • Describe and differentiate pozzolanic and cementitious...
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Webinar: Firsthand Data Collection: Students Get Behind the Wheel of Vehicle Dynamics

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PRESENTATION SLIDES

Miss the presentation or want a look back at the slides? You can view them here.

TEACHING MODULE

Looking for a simple lesson plan outline? Here's a snapshot of the curriculum developed by this project, for faculty who might be interested in incorporating it into their transportation courses.

OVERVIEW

Vehicle operating dynamics data have a fundamental impact on the design of roadways, but collecting this type of data is not part of your typical college curriculum. Instead, engineering students are handed a textbook, leaving them without a firsthand experience of how accelerations and decelerations “feel” to the driver, the ultimate consumer of their designs. Seeking to change this norm, Roger Lindgren and C.J. Riley, civil engineering professors at the Oregon Institute of Technology, undertook a NITC education project to incorporate more real-world data collection and analysis into transportation courses...

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