Dynamic mechanical properties of basalt fiber reinforced concrete after elevated temperatures

Ren Wei-bo; Xu Jin-yu; Bai Er-lei; Fan Jian-she

doi:10.11883/1001-1455(2015)01-0036-07

Volume 35 Issue 1

Feb. 2015

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Ren Wei-bo, Xu Jin-yu, Bai Er-lei, Fan Jian-she. Dynamic mechanical properties of basalt fiber reinforced concrete after elevated temperatures[J]. Explosion And Shock Waves, 2015, 35(1): 36-42. doi: 10.11883/1001-1455(2015)01-0036-07

Citation:

Ren Wei-bo, Xu Jin-yu, Bai Er-lei, Fan Jian-she. Dynamic mechanical properties of basalt fiber reinforced concrete after elevated temperatures[J]. Explosion And Shock Waves, 2015, 35(1): 36-42. doi: 10.11883/1001-1455(2015)01-0036-07

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Dynamic mechanical properties of basalt fiber reinforced concrete after elevated temperatures

doi: 10.11883/1001-1455(2015)01-0036-07

1.
Department of Airfield and Building Engineering, Air Force Engineering University, Xi'an 710038, Shaanxi, China
2.
College of Mechanics and Civil Architecture, Northwest Polytechnic University, Xi'an 710072, Shaanxi, China
3.
The Ninth Engineering Head Group of China Airport, Xinjin 611430, Sichuan, China

Received Date: 2013-06-26
Rev Recd Date: 2013-12-16
Publish Date: 2015-01-25

Abstract

Abstract

To investigate the influences of temperature, impact velocity and fiber volumetric fraction on dynamic compressive strength and impact toughness of basalt fiber reinforced concrete (BFRC), dynamic compressive experiments were carried out on BFRC after different elevated temperatures by using a 100 mm diameter split Hopkinson pressure bar (SHPB) equipment. The results demonstrate that the dynamic compressive strength and impact toughness increase approximately linearly with the increase of average strain rate under the same temperature. At a fixed impact velocity, the rising of temperature results in a decrease in dynamic compressive strength and impact toughness as well as their strain rate sensitivities. For a given working condition, the dynamic compressive strength and impact toughness of BFRC are generally higher than those of plain concrete. The strengthening and toughening effect are relatively the best when the fiber volumetric fraction is 0.2%. Consequently, changes in dynamic compressive properties of BFRC after elevated temperatures are the combining effects of temperature, impact velocity and fiber volumetric fraction. The adding of basalt fiber can significantly decrease the thermal deterioration of BFRC.
- solid mechanics,
- dynamic compressive strength,
- SHPB,
- basalt fiber reinforced concrete,
- elevated temperature,
- impact toughness

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References(16)

References

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