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材料导报  2024, Vol. 38 Issue (5): 23070191-7    https://doi.org/10.11896/cldb.23070191
  特种工程材料 |
冲击荷载作用下改性聚丙烯纤维高强珊瑚混凝土的动力特性
程雨竹1, 马林建2,*, 王磊3, 耿汉生2, 高康华4, 谭仪忠2
1 湖南科技大学土木工程学院,湖南 湘潭 411201
2 中国人民解放军陆军工程大学爆炸冲击防灾减灾全国重点实验室,南京 210000
3 桂林理工大学土木建筑工程学院,广西 桂林 541000
4 92656部队,海南 三亚 572000
Dynamic Mechanical Properties of Modified Polypropylene Fiber-reinforced High-strength Coral Concrete Under Impact Load
CHENG Yuzhu1, MA Linjian2,*, WANG Lei3, GENG Hansheng2, GAO Kanghua4, TAN Yizhong2
1 School of Civil Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China
2 State Key Laboratory of Disaster Prevention and Mitigation of Explosion and Impact, Army Engineering University of PLA, Nanjing 210000, China
3 School of Civil Engineering and Architecture Engineering, Guilin University of Technology, Guilin 541000, Guangxi, China
4 Unit 92656 of PLA, Sanya 572000, Hainan, China
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摘要 利用100 mm分离式霍普金森压杆装置对改性聚丙烯纤维高强珊瑚混凝土进行冲击压缩试验,分析了三种不同纤维掺量的改性聚丙烯纤维高强珊瑚混凝土试样的动态压缩强度、变形特性及吸能性能。结果表明:不同纤维掺量的改性聚丙烯纤维高强珊瑚混凝土的动态抗压强度、破碎状态、韧性指数等均具有明显的应变率效应。随着纤维掺量的增加,改性聚丙烯纤维高强珊瑚混凝土的破坏程度逐渐减轻,峰值应变增大,韧性指数逐渐增大,能量吸收也呈现上升趋势。改性聚丙烯纤维的掺入能够有效增强增韧并降低珊瑚混凝土的脆性破坏特征。
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程雨竹
马林建
王磊
耿汉生
高康华
谭仪忠
关键词:  高强珊瑚混凝土  改性聚丙烯纤维  动态抗压强度  韧性指数  能量耗散    
Abstract: The impact compression test of modified polypropylene fiber-reinforced high-strength coral concrete was performed by using a 100 mm split Hopkinson pressure bar device, and the dynamic compression strength, deformation characteristics and energy dissipation of modified polypropylene fiber-reinforced high strength coral concrete samples with different fiber dosages were analyzed. The results show that the dynamic compressive strength, fracture state and toughness index of modified polypropylene fiber-reinforced high-strength coral concrete with different fiber dosages have obvious strain rate effect. With the increase of the fiber dosage, the damage degree of modified polypropylene fiber-reinforced high-strength coral concrete gradually decreases, and the peak strain, toughness index and energy dissipation gradually increase. In conclusion, mo-dified polypropylene fiber can effectively enhance toughness and reduce brittle failure characteristics of coral concrete.
Key words:  high-strength coral concrete    modified polypropylene fiber    dynamic compressive strength    toughness index    energy dissipation
出版日期:  2024-03-10      发布日期:  2024-03-18
ZTFLH:  TU528.2  
基金资助: 国家优秀青年科学基金(52222110);江苏省自然科学基金(BK20211230)
通讯作者:  *马林建,教授,中国人民解放军陆军工程大学博士研究生导师,主要研究领域为岛礁地下工程防护、盐岩地下能源储库防护基础理论和工程应用。 patton.4400@163.com   
作者简介:  程雨竹,讲师,湖南科技大学土木工程学院。2018年6月、2023年6月在湘潭大学分别获得工学硕士学位和博士学位。目前主要研究高强珊瑚砂混凝土的力学性能以及高强珊瑚混凝土结构抗冲击及抗爆性能。
引用本文:    
程雨竹, 马林建, 王磊, 耿汉生, 高康华, 谭仪忠. 冲击荷载作用下改性聚丙烯纤维高强珊瑚混凝土的动力特性[J]. 材料导报, 2024, 38(5): 23070191-7.
CHENG Yuzhu, MA Linjian, WANG Lei, GENG Hansheng, GAO Kanghua, TAN Yizhong. Dynamic Mechanical Properties of Modified Polypropylene Fiber-reinforced High-strength Coral Concrete Under Impact Load. Materials Reports, 2024, 38(5): 23070191-7.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.23070191  或          http://www.mater-rep.com/CN/Y2024/V38/I5/23070191
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