• SEM micrograph with indentation grid
• Indents spaced 10 μm horizontally and 20 μm vertically
• Wide variety within indent space• Transitions in mechanical
properties consistent with interphase regions
• Future work• Evaluate mechanisms of
degradation• Improve correlation
between phase and properties
• Elucidate interaction between indenter and surface
Images from: R.D. Moser, P.G. Allison, and M.Q. Chandler. Characterization of Impact Damage in Ultra-High Performance Concrete Using Spatially Correlated Nanoindentation/SEM/EDX. Journal of Materials Engineering and Performance. August 2013
Concrete and Steel Reinforcement• Characterizing the interface
between concrete and steel reinforcement
• Interphases between materials not well defined
Image from: P.G. Allison, R.D. Moser, C.A. Weiss Jr., P.G. Malone, S.W. Morefield. Nanomechanical and chemical characterization of the interface between concrete, glass–ceramic bonding enamel and reinforcing steel. Construction and Building Materials 37 (2012) 638–644.
UAB
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