Experimental study on the blast resistance performance of glass fiber reinforced concrete beams
In order to study the anti-explosion performance of glass fiber reinforced concrete(GFRC)beams,an ordinary reinforced concrete(RC)beam without fiber and four glass fiber reinforced concrete(GFRC)beams with volume content of 0.05％,0.10％,0.15％and 0.20％respectively were subjected to explosion tests,and the impact of volume content of glass fiber on the dynamic response of reinforced concrete beam structure under explosion load was comprehensively analyzed.The results show that the acceleration,strain,damage index value,number and width of cracks of four GFRC beams under explosive load are smaller than those of RC beams,and the concrete beams with 0.15％volume of glass fiber are relatively the smallest,indicating that a certain amount of glass fiber can effectively inhibit the initiation and expansion of cracks in concrete,and can improve the anti-explosion performance of concrete beams,Moreover,the blast resistance of glass fiber reinforced concrete beams with 0.15％volume fraction of glass fiber is better.
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