Dr. Kimberly KurtisSchool of Civil EngineeringGeorgia Institute of TechnologyAtlanta, GeorgiaOverview of Microscopy of Cement-based MaterialsSample Prep•THE MOST CRITICAL STEP•Avoid introduction of artifacts (material loss, cracking, etc.)•Image representative sample sites (sampling techniques and number of image locations)•Often must be creative•Many steps are painstaking and require patience to be successful
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Many Techniques AvailableMost standard:•Optical•Scanning ElectronAlso available:•Confocal (optical)•Variable pressure electron microscopy•Transmission electron microscopy•Transmission soft x-ray microscopy•X-ray microtomography•Atomic force microscopy•Nuclear magnetic resonanceResolution
Optical MicroscopyAlite, C3SBelite, C2SConfocal MicroscopyThree-dimensional representations are formed by acquiring a series of imag