A dynamic splitting test and analysis of fiber reinforced concrete under impact load

PDF(1810 KB)

Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (16) : 219-226.

CUI Dashun1, WANG Limin2, XUE Huiting3, ZHANG Chunwei1, GAO Dianwei4, CHEN Fanxiu2

Author information +

History +

Abstract

To study the influence of different fiber materials on the dynamic splitting mechanical properties of concrete and the differences in their effects, using 100 mm diameter split Hopkinson pressure bar test device and V2512 ultra high speed digital camera, dynamic Brazilian disc splitting tests were conducted on plain concrete, palm fiber concrete, and steel fiber concrete specimens. Analyzed the fracture process and crack propagation law of different fiber reinforced concrete specimens using DIC technology, obtained dynamic tensile properties and dynamic fracture toughness of different fiber reinforced concrete specimens. The experimental and analytical results show that: Under the same impact load, the addition of fibers can improve the impact toughness of concrete, reduce the collapse phenomenon caused by stress concentration at the loading end of the specimen, delay the failure time of the specimen, and effectively suppress the propagation of cracks, steel fibers have a longer crack resistance effect on concrete than palm fibers. Under the same loading time, the peak strain of palm fiber reinforced concrete and steel fiber reinforced concrete is lower than that of plain concrete. The addition of steel fibers can significantly hinder the internal failure process of concrete specimens, and the change in damage variables is relatively slow, after the specimen cracks, steel fiber reinforced concrete has greater residual stress under the same crack width.

Key words

fiber reinforced concrete / SHPB installation / dynamic splitting test / dynamic fracture toughness

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

CUI Dashun1, WANG Limin2, XUE Huiting3, ZHANG Chunwei1, GAO Dianwei4, CHEN Fanxiu2. A dynamic splitting test and analysis of fiber reinforced concrete under impact load[J]. Journal of Vibration and Shock, 2024, 43(16): 219-226

References

[1]彭松林, 贾永胜, 董千, 等. 钢纤维混凝土动态压缩与拉伸力学特性试验研究[J]. 爆破: 1-14. PENG Songlin, JIA Yongsheng, DONG Qian, et al. Experimental Study on Dynamic Compressive and Tensile Mechanical Properties of Steel Fiber Reinforced Concrete [J]. Blasting, 1-14. [2]HASSAN M, WILLE K. Comparative experimental investigations on the compressive impact behavior of fiber-reinforced ultra high-performance concretes using split Hopkinson pressure bar [J]. Construction and Building Materials, 2018, 191: 398-410. [3]任韦波, 许金余, 白二雷, 等. 高温后玄武岩纤维增强混凝土的动态力学特性[J]. 爆炸与冲击, 2015, 35(01): 36-42. REN Weibo, XU Jinyu, BAI Erlei, et al. Dynamic mechanical properties of basalt fiber reinforced concrete after elevated temperatures [J]. EXPLOSION AND SHOCK WAVES, 2015, 35(01): 36-42. [4]杨健辉, 李潇雅, 叶亚齐, 等. 全轻纤维混凝土的SHPB冲击强度与耗能效应[J]. 振动与冲击, 2020, 39(02): 148-53+77. YANG Jianhui,LI Xiaoya,YE Yaqi, et al. Strength and energy dissipation effect of fiber reinforced all-lightweight concrete based on SHPB impact tests [J]. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(02): 148-53+77. [5]仰涛. 天然纤维混凝土动态力学性能试验研究[D]. 安徽：合肥工业大学, 2019. YANG Tao, Experimental Study on Dynamic Mechanical Properties of Natural Fiber Reinforced Concrete [D]. An Hui: Hefei University of Technology, 2019. [6]赵国藩，彭少民，黄承逵，等. 钢纤维混凝土结构[M]. 北京：中国建筑工业出版社, 1999. ZHAO Guofan, PENG Shaomin, HUANG Chengkui, et al. structure of steel fiber reinforced concrete [M]. Bei Jing: China Architecture & Building Press, 1999. [7]巫绪涛, 代仁强, 陈德兴, 等. 钢纤维混凝土动态劈裂试验的能量耗散分析[J]. 应用力学学报, 2009, 26(01): 151-4+218. WU Xutao, DAI Renqiang, CHEN Dexing, et al. Energy Dissipation Analysis on Dynamic Splitting-Tensile Test of Steel Fiber Reinforced Concrete [J]. CHINESE JOURNAL OF APPLIED MECHANICS, 2009, 26(01): 151-4+218. [8]张玉杰, 陈炳聪, 汪洋. 钢纤维混凝土基本力学性能试验研究[J]. 混凝土, 2020, (04): 74-7. ZHANG Yujie, CHEN Bingcong, WANG Yang. Analysis on the mechanical properties of steel fiber reinforced concrete [J]. Concrete, 2020, (04): 74-7. [9]巫绪涛, 胡时胜, 陈德兴, 等. 钢纤维高强混凝土冲击压缩的试验研究[J]. 爆炸与冲击, 2005, (02): 125-31. WU Xutao,HU Shisheng,CHEN Dexing, et al. Impact compression experiment of steel fiber reinforced high strength concrete [J]. EXPLOSION AND SHOCK WAVES, 2005, (02): 125-31. [10]王林, 胡秀章, 黄焱龙, 等. 钢纤维混凝土动态抗拉强度的实验研究[J]. 振动与冲击, 2011, 30(10): 50-3+81. WANG Lin, HU Xiuzhang, HUANG Yanlong, et al. Dyanmic tensile strength tests for steel fiber reinforced concrete [J].JOURNAL OF VIBRATION AND SHOCK, 2011, 30(10): 50-3+81. [11]潘慧敏, 马云朝. 钢纤维混凝土抗冲击性能及其阻裂增韧机理[J]. 建筑材料学报, 2017, 20(06): 956-61. PAN Huimin, MA Yunzhao. Impact Resistance of Steel Fiber Reinforced Concrete and Its Mechanism of Crack Resistance and Toughening [J].JOURNAL OF BUILDING MATERIALS, 2017, 20(06): 956-61. [12]YE Z B, HUANG R Y, LI Y C, et al. Steel fiber-reinforced concrete under impact loading dynamic constitutive equation [J]. Construction and Building Materials, 2018, 190: 1049-55. [13]胡时胜, 王礼立, 宋力, 等. Hopkinson压杆技术在中国的发展回顾[J]. 爆炸与冲击, 2014, 34(06): 641-57. HU Shisheng, WANG Lili, SONG Li, et al. Review of the development of Hopkinson pressure bar technique in China [J]. EXPLOSION AND SHOCK WAVES, 2014, 34(06): 641-57. [14]平琦, 马芹永, 袁璞. 岩石试件SHPB劈裂拉伸试验中能量耗散分析[J]. 采矿与安全工程学报, 2013, 30(03): 401-7. PING Qi, MA Qinyong, YUAN Pu. Energy dissipation analysis of stone specimens in SHPB tensile test [J]. Journal of Mining&Safety Engineering, 2013, 30(03): 401-7. [15]TIMOSHENKO S P, GOOD J N. 弹性理论 [M]. 徐芝纶. 北京: 高等教育出版社,2013. TIMOSHENKO S P, GOOD J N. Elasticity theory [M]. XU Zhilun. Bei Jing: Higher Education Press, 2013. [16]李兆霞. 损伤力学及其应用[M]. 北京: 科学出版社, 2002. LI Zhaoxia. Damage Mechanics and Applications [M]. Bei Jing: Science Press, 2002.