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Date

2-23-2023

Description

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.

Biographical

Dr. C.J. Riley is professor and graduate program director in the Civil Engineering Department at Oregon Institute of Technology. He is a Fellow of the American Society of Civil Engineers and has taught solid mechanics and structural engineering for over 15 years with a particular focus on hands-on demonstrations, field investigations, and active learning. Dr. Riley is a licensed professional engineer (OR) with professional experience in highway bridge rating and design as well as vibration-based structural health monitoring methods. Ashton Greer is an assistant professor of civil engineering at Oregon Tech, with a focus on water resources. She is particularly interested in western water management and is passionate about utilizing remote sensing and spatial analysis techniques to develop solutions to complex water issues.

Disciplines

Transportation | Urban Studies | Urban Studies and Planning

Persistent Identifier

https://archives.pdx.edu/ds/psu/42372

Webinar: Improving Recreational Trail Accessibility with a Volcanic Ash Treatment

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