SHPB teston Reactive Powder Concrete-Filled Steel Tube after exposure tohigh temperature

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (10) : 134-139.

GUO Zhi-kun, CHEN Wan-xiang,JIANG Meng, ZOU Hui-hui

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Abstract

Impact teston Reactive Powder Concrete-Filled Steel Tube (RPC-FST) and Reactive Powder Concrete (RPC) specimensafter exposure to high temperature (20℃, 200℃, 300℃)were performed by using ø75 mm-Split Hopkinson Pressure Bar (SHPB). The influences of strain rate effects and temperature effects on dynamic behaviors and failure modes of specimens were investigated.It indicated thatthe toughness andspecifictoughnessof RPC-FST increased as strain rates increased. The toughness and specific toughness of RPC-FSTunder the same impact loadingincreased as temperature increased. The failuresof RPC-FST and RPC under impact loadingtended to be unobvious as temperature increased, but brittle failures were observedin RPC while ductile failures in RPC-FST.The absorbed energies of RPC-FSTincreased as temperature increased, while the temperatures have nogreatinfluences on the maximum absorbed energies of RPC. The absorbed energies of RPC-FST and RPCboth increased as strain rate increased. The capacities of energy absorption were mostly depended on energy absorbency.

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high temperature / RPC-Filled Steel Tube / Split Hopkinson Pressure Bar / toughness;energy absorption characteristics

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GUO Zhi-kun, CHEN Wan-xiang,JIANG Meng, ZOU Hui-hui. SHPB teston Reactive Powder Concrete-Filled Steel Tube after exposure tohigh temperature[J]. Journal of Vibration and Shock, 2017, 36(10): 134-139

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