Three-Dimensional Study of Concrete Microstructure using X-ray Computed Tomography
Presented by: Prof. David Lange University of Illinois, Urbana, IL and Dr. Tyler Oesch U.S. Army EngineerResearch and Development Center, Vicksburg, MS
New technology has made it possible to create three-dimensional images of microstructure to better understand the performance of concrete. X-ray computed tomography (XCT) has been used to study phases — aggregate, paste, air bubbles, porosity and fibers — and discern crack propagation of samples under load. This webinar will feature recent research that explores how XCT can be applied to concrete materials over a range of scale that encompasses small cement grains on the low end to steel fibers and aggregates on the high end. XCT provides unprecedented opportunities: We can interrogate wet samples over time to observe hydration; we can study distribution of entrained air bubbles; we can load samples to study crack propagation and contrast HPC and OPC; we can investigate fiber reinforced materials to appreciate how fibers influence fracture. The research community is only beginning to appreciate how these powerful new techniques will lead to profound new knowledge about concrete materials.
Missouri University of Science and Technology
Re-Cast Tier1 University Transportation Center
Lange, David and Oesch, Tyler, "Three-Dimensional Study of Concrete Microstructure using X-ray Computed Tomography" (2015). RE-CAST Webinars. 8.
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Video - Presentation
Civil, Architectural and Environmental Engineering