马宇昂1,甘元初1,曾泽强1,雷 晴1,陈 龙1,贺 斌2
马宇昂,甘元初,曾泽强,等.重晶石混凝土动态压缩性能研究[J].混凝土与水泥制品,2020(11):26-29,34.
MA Y A,GAN Y C,ZENG Z Q,et al.Study on the Dynamic Compressive Properties of Barite Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11): 26-29,34.
重晶石混凝土动态压缩性能研究
马宇昂1,甘元初1,曾泽强1,雷 晴1,陈 龙1,贺 斌2
马宇昂,甘元初,曾泽强,等.重晶石混凝土动态压缩性能研究[J].混凝土与水泥制品,2020(11):26-29,34.
MA Y A,GAN Y C,ZENG Z Q,et al.Study on the Dynamic Compressive Properties of Barite Concrete[J].CHINA CONCRETE AND CEMENT PRODUCTS,2020(11): 26-29,34.
摘 要:为了研究中高应变率下重晶石混凝土的动态压缩力学性能,采用了100 mm霍普金森(SHPB)压杆系统,在5种冲击气压下,对3种强度等级的重晶石混凝土、普通混凝土进行了对比试验。试验结果表明:重晶石混凝土与普通混凝土类似,各项力学特性均具有应变率效应;相同加载条件下,随着强度等级的提高,试件脆性增强、延性减弱、峰值应变降低较明显;此外,对照普通混凝土拟合了重晶石混凝土的动态增大系数(DIF)率型公式。
Abstract: In order to study the dynamic compression mechanical properties of barite concrete at medium and high strain rates, 100 mm hopkinson pressure bar (SHPB) system was used. Under 5 kinds of impact pressure, comparative experiments were performed on barite concrete and ordinary concrete with 3 kinds of strength grades. The experimental results show that barite concrete is similar to ordinary concrete, and its mechanical properties have strain rate effect. Under the same loading condition, with the increase of strength grade, the brittleness of the specimens increases, ductility decreases, and the peak strain decreases significantly. In addition, contrast ordinary concrete, the dynamic coefficient of increase (DIF) formula of barite concrete is summarized.
版权所有:中国混凝土与水泥制品网 苏ICP备10086386号 网站建设:中企动力 苏州