Experimental Testing of CFRP-Strengthened Reinforced Concrete Slab Elements Loaded by Close-In Blast

Strain Rate Effects in CFRP Used For Blast Mitigation

“…This study was undertaken to verify dynamic CFRP properties used in blast mitigation presented in Orton et al [1]. CFRP coupons were created through a wet lay-up process and were later tested under uniaxial tension using an 890 kN Dynamic Loader.…”

“…Specifically, tests by Orton et al [1], Kim et al [2], Muszynski and Purcell [3], Razaqpur et al [4], Wu et al [5] and Lu et al [6] have shown the effectiveness of FRP to strengthen reinforced concrete components for blast. Typically the FRP is applied to the back-face of the concrete element as shown in Figure 1.…”

“…Therefore the strain rate experienced in the CFRP is dependent on the structural system to which the CFRP is attached. The target strain rate for the CFRP under blast Blast loading for this research is based on the actual blast tests presented in Orton et al [1]. For these tests CFRP mitigated concrete slabs measuring 1.2 m by 2.4 m with a 13 cm thickness were tested under blast loads with a scaled range of 0.4 and 0.6 m/kg 1/3 .…”

An experimental study of pressure distributions within an air-permeable, double-layer roof system in regions of separated flow

“…Since the outer layer is air-permeable, while the inner layer is often sealed to provide thermal insulation and water-proofing, the external pressures are partially transmitted into the gap between the two layers. Although "perfect" equalization does not occur in reality, pressure equalization does play a vital role in reducing the wind loads for the design of the outer layer (e.g., Bienkiewicz and Endo, 2009;Kopp, 2013;Cope et al, 2014). The degree of pressure equalization is mainly determined by (i) the pressure gradient along the external surface, and (ii) the geometry, including the gap between panels (G), the cavity depth (i.e., height of the panels above the roof, H) and cavity length (L c ), the panel thickness (t), and the panel size (L), as defined in Fig.…”

Wind loads on photovoltaic arrays mounted parallel to sloped roofs on low-rise buildings

“…This leads to large uplift forces on low-rise building roofs, but is also the flow environment for roof-mounted equipment such as photovoltaic (PV) arrays. To date the majority of published studies on wind loads on roof-mounted solar arrays have focused primarily on tilted arrays on flat roofs of large commercial buildings (e.g., Geurts andvan Bentum 2006, 2007;Kopp et al, 2012;Banks, 2013;Kopp 2013;Kopp and Banks;2013, Cao et al;Maffei et al, 2013;Pratt and Kopp, 2013;and others). These studies have identified the role of the building geometry (i.e., building height, plan dimensions, parapet height, etc.)…”