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Study on Dynamic Mechanical Behavior and Constitutive Model of Reactive Powder Concrete after Exposure in High Temperature
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Li-Wen WANG1, 2, Bao-Jun PANG1, Yong CHEN1, Kai ZHANG1
Chinese Journal of High Pressure Physics | 2012, 26(4) : 361 - 368
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Chinese Journal of High Pressure Physics | 2012, 26(4): 361-368
Study on Dynamic Mechanical Behavior and Constitutive Model of Reactive Powder Concrete after Exposure in High Temperature
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Li-Wen WANG1, 2, Bao-Jun PANG1, Yong CHEN1, Kai ZHANG1
Affiliations
  • 1.School of Astronautics, Harbin Institute of Technology, Harbin 150080, China
  • 2.Dongfang Electric Corporation, Chengdu 611731, China
Published: 2012-08-15
Outline
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The dynamic mechanical behavior and rate constitutive model of reactive powder concrete (RPC) after exposure in high temperature are studied experimentally by means of split Hopkinson pressure bar system. Both the untreated specimens and those after exposure in high temperature (400, 600 and 800 ℃) are tested with lead flakes as pulse shapers. The experimental results show that both dynamic compressive strength and toughness of RPC after different high temperature treatments exhibit remarkable strain rate sensitivity while the peak strain and initial Young modulus do not. Furthermore, the dynamic uniaxial compressive mechanical properties of RPC at different strain rate debased after exposure at high temperature over 400 ℃. The scanning electron microscope (SEM) technology is also used to investigate the microstructure change of the RPC material; it proves that the deterioration of microstructure is the essential reason for the reduction of the RPC's macroscopic mechanical performance. In addition, ZWT viscoelastic constitutive model is utilized and modified, thus it can be used to analysis the rate constitutive relations of concrete after exposure in high temperature.

split Hopkinson pressure bar  /  reactive powder concrete  /  high temperature  /  dynamic mechanical properties  /  constitutive model  /  scanning electron microscope
王立闻, 庞宝君, 陈勇, 张凯. 高温处理后活性粉末混凝土动力学行为及本构模型研究. 高压物理学报, 2012 , 26 (4) : 361 -368 .
Li-Wen WANG, Bao-Jun PANG, Yong CHEN, Kai ZHANG. Study on Dynamic Mechanical Behavior and Constitutive Model of Reactive Powder Concrete after Exposure in High Temperature[J]. Chinese Journal of High Pressure Physics, 2012 , 26 (4) : 361 -368 .
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Article Info
  • Receive Date：2010-12-27
  • Online Date：2026-11-05
  • Published：2012-08-15
Article Data
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History
  • Received：2010-12-27
  • Revised：2011-01-12
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Affiliations
    1.School of Astronautics, Harbin Institute of Technology, Harbin 150080, China
    2.Dongfang Electric Corporation, Chengdu 611731, China
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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