Equipment and Protocols for Quasi-Static and Dynamic Tests of Very-High-Strength Concrete (VHSC) and High-Strength High-Ductility Concrete (HSHDC)
U.S. Army Engineer Research and Development Center Vicksburg United States
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This research developed the quasi-static and dynamic equipment and protocols for tests of both very-high-strength concrete VHSC and high-strength high-ductility concrete HSHDC to predict blast performance. VHSC was developed for high compressive strength greater than 200 MPa. Using VHSC as the baseline material, HSHDC was developed and exhibits comparable compressive strength greater than 150 MPa and high tensile ductility greater than 3 percent tensile strain. This research investigated quasi-static material properties including compression, tension, and flexure third-point and pressure loadings. Additionally, dynamic blast load simulator shock tube tests were performed on simply supported one-way panels in flexure. Subsequently, the material response in flexure was predicted using the Wall Analysis Code WAC. Although VHSC has a higher peak flexural strength capacity, HSHDC exhibits higher ductility through multiple parallel micro-cracks transverse to loading. The equipment and test protocols proved to be successful in providing ways to test scaled concrete specimens quasi-statically and dynamically.