| 超高韧性水泥基复合材料与活性粉末混凝土动态性能研究 |
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| 引用本文： | 赵昕,徐世烺,李庆华,姚杰.超高韧性水泥基复合材料与活性粉末混凝土动态性能研究[J].北京理工大学学报,2016,36(S1):42-45. |
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| 作者姓名： | 赵昕 徐世烺 李庆华 姚杰 |
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| 作者单位： | 浙江大学 建筑工程学院, 浙江, 杭州 310058,浙江大学 建筑工程学院, 浙江, 杭州 310058,浙江大学 建筑工程学院, 浙江, 杭州 310058,浙江大学 建筑工程学院, 浙江, 杭州 310058 |
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| 基金项目： | 浙江省自然科学基金资助项目（LR16E080001） |
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| 摘 要： | 研究超高韧性水泥基复合材料（UHTCC）及活性粉末混凝土（RPC）在不同冲击荷载下的动态劈裂强度、拉压比、能量吸收量以及破坏状态.试验采用Ф80 mm的分离式霍普金森压杆以5组不同的冲击速度，打击UHTCC和RPC的平台巴西圆盘试样.研究结果表明：两组材料的动态劈裂强度随着应变率的上升而上升，具有明显的应变率敏感性，RPC的动态劈裂强度约为UHTCC的1.35倍；不同冲击荷载下两组材料的动态能量吸收量相近.
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| 关 键 词： | 超高韧性水泥基复合材料 活性粉末混凝土 平台巴西圆盘 动态劈裂 |
| 收稿时间： | 2016/3/18 0:00:00 |
Dynamic Test of Ultra High Toughness Cementitious Composite and Reactive Powder Concrete |
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| ZHAO Xin,XU Shi-lang,LI Qing-hua and YAO Jie.Dynamic Test of Ultra High Toughness Cementitious Composite and Reactive Powder Concrete[J].Journal of Beijing Institute of Technology(Natural Science Edition),2016,36(S1):42-45. |
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| Authors: | ZHAO Xin XU Shi-lang LI Qing-hua and YAO Jie |
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| Institution: | College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, Zhejiang 310058, China,College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, Zhejiang 310058, China,College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, Zhejiang 310058, China and College of Civil Engineering and Architecture, Zhejiang University, Hangzhou, Zhejiang 310058, China |
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| Abstract: | The dynamic splitting tensile behavior of UHTCC (ultra high toughness cementitious composites) and RPC (reactive powder concrete) were analyzed using a 80-mm-diameter SHPB (split Hopkinson pressure bar). The dynamic tensile strength, tensile compressive strength ratio, energy absorption and failure mode of the two materials were investigated.The results show that dynamic tensile strength of the two materials are rate sensitive, and the dynamic splitting tensile strength of RPC is higher than that of UHTCC. However, the dynamic tensile compressive strength ratio of UHTCC is higher than RPC. The energy absorption ability of the two materials increase with the increasing impact velocity. |
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| Keywords: | ultra high toughness cementitious composites reactive powder concrete flattened Braziliandisc method dynamic splitting test |
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