This paper presents the results of an experimental study axial capacity circular spirally-reinforced concrete columns that were subjected to accelerated corrosion while sustaining a constant compressive service load. Two sets five each designed with different spiral pitch investigate effect confinement on propagation. Columns non-confining reinforcement had only their longitudinal reinforcing s...

Abstract To correctly manage the road infrastructure before and after an earthquake, it is necessary to estimate even predict seismic performance of bridge. The quantification bridge's response was present in terms displacement also based on previous research reinforced concrete bridge pier models. did define from a force lateral-displacement diagram corresponding capacity curve, calculated thr...

This study investigated the post-fire seismic characteristics of reinforced concrete frame joints with carbon fiber-reinforced polymer (CFRP) under low-cycle reciprocating loads through numerical analysis. Finite element simulations were conducted to examine hysteretic curve, skeleton energy dissipation, and stress distribution joints. The findings revealed that, relative unreinforced post-fire...

Based on the mechanical test (shear test, compression test), bond model of corn kernel and straw was established to explore rolling crushing effect different rollers. The type roller is different. material process by force (extrusion kneading) analysis reveals that disc (DCR) has characteristics large unit-length kneading area; spiral-notched serrated (SNSCR) transverse shearing material; they ...

Deep rock bears dynamic loads such as machinery, blasting and disturbance in the mining process. The fracture mechanism of deep is a necessary prerequisite for engineering design analysis. To study under high situ stress, mudstone sandstone were selected research objects. mechanical properties energy dissipation assessed by using 50 mm diameter separated Hopkinson test device. According to simi...

Abstract This paper investigates the use of z-pinning reinforcement in CFRP tubular structures under axial impact, to find optimum design increase specific energy absorption (SEA). Through-the-thickness is known as a technique improve integrity and fracture resistance composite materials structures. Manufacturing testing unpinned are conducted create base model validate numerical results. A fin...

This paper presents a detailed investigation of the performance cold-formed round-ended concrete-filled steel tubular (RECFT) columns under cyclic loading via experimental and numerical approaches. Experimental tests observations this type novel composite column are presented, its failure modes, hysteretic curves, ductility ratio, energy dissipation, stiffness, strength degradation revealed. A ...

The Indirect Tension Test (IDT) is frequently used for evaluation of asphalt material viscoelastic creep properties. With the increased use of finer aggregate gradations and polymer modified asphalt binders in asphalt materials, crushing can occur under the narrow loading heads. The new specimen configuration proposed has a trimmed area under the loading heads, creating a “flattened-IDT.” This ...