Compaction and Spall of UHPC Concrete Under Shock Conditions

Hugoniot Data and Equation of State Parameters for an Ultra-High Performance Concrete

“…The planar plate impact (PPI) test is an established technique to investigate EOS properties under shock loading [13,20,21] that has been applied to a variety of different materials, such as metals, composites, concretes and geomaterials [15,[22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. Hugoniot data derived from these experiments is available for different types of concrete [15, 22-25, 27, 29] and mortar materials [27,31,33].…”

“…The planar plate impact (PPI) test is an established technique to investigate EOS properties under shock loading [13,20,21] that has been applied to a variety of different materials, such as metals, composites, concretes and geomaterials [15,[22][23][24][25][26][27][28][29][30][31][32][33][34][35][36]. Hugoniot data derived from these experiments is available for different types of concrete [15, 22-25, 27, 29] and mortar materials [27,31,33]. In this work, mortar is referred to as a mix of cement and water (and other additives) with only fine aggregates (like sand or other fine powder) while concrete is used for mortar binding larger aggregates (gravel and other rock) and steel fibers.…”

“…In this work, mortar is referred to as a mix of cement and water (and other additives) with only fine aggregates (like sand or other fine powder) while concrete is used for mortar binding larger aggregates (gravel and other rock) and steel fibers. The Hugoniot data of different mortar and concrete materials has been compared in [27] and more recently in [33]. The latter also includes an extensive review of published and partly so far not publicly available Hugoniot data [33].…”

“…The Hugoniot data of different mortar and concrete materials has been compared in [27] and more recently in [33]. The latter also includes an extensive review of published and partly so far not publicly available Hugoniot data [33].…”

“…Additionally, Reinhart [29] discusses effects of the admixture of steel fibers, aggregates and both, while no significant influence of unconfined compressive strength on the Hugoniot data is mentioned. Furthermore, Neel [33] argues that material specific behavior is only present in the pore compaction regime for shock velocity vs. particle velocity data. In this region a dispersive compression wave is produced, which is influenced by material specific characteristics as initial density, a complex interplay of different competing processes, and the compacted density.…”