Abstract
Our understanding of the fracture process zone and fracture mechanisms that lead to quasi-brittle response in cement-based materials has been enhanced through novel experimental techniques. Laser holographic interferomelry provides a means of measuring the size and location of the fracture process zone. Acoustic emission measures and characterizes microcracking during loading. Microscopic surface analysis quantifies the tortuosity of the main crack propagation. All of these techniques provide valuable experimental evidence that permits refinement of fracture mechanics models and improved understanding of quasi-brittle behavior in cement-based materials.
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References
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Shah, S.P., Ouyang, C. & Lange, D.A. Fracture Behavior of Cement-Based Materials. MRS Bulletin 18, 55–59 (1993). https://doi.org/10.1557/S0883769400043918
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DOI: https://doi.org/10.1557/S0883769400043918