| 岩石、混凝土受颗粒冲击后接触损伤形貌的特征 |
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| 引用本文： | 马振珠,岳汉威,包亦望,张利俊. 岩石、混凝土受颗粒冲击后接触损伤形貌的特征[J]. 燕山大学学报, 2009, 33(6): 510-516 |
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| 作者姓名： | 马振珠 岳汉威 包亦望 张利俊 |
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| 作者单位： | 中国建筑材料科学研究总院中国建筑材料检验认证中心,北京,100024 |
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| 基金项目： | 国家高技术研究发展计划资助项目 |
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| 摘 要： | 用自制的冲击球压装置研究了花岗岩、大理石、混凝土及砂浆在颗粒冲击下的压痕-冲击应力关系和接触损伤的规律,结果表明：花岗岩、大理石的压痕-冲击应力关系以线性为主,随着应力的提高材料发生突然断裂;混凝土和砂浆线性关系相对不明显,这在宏观形貌上表现为损伤区的形貌特点不同。对四种材料损伤形貌的微观分析表明：花岗岩、大理石受颗粒冲击后产生的损伤主要为拉应力导致的解理面、晶面的破坏以及裂纹沿相界面和孔隙的扩展,对其力学性能有较大的危害;混凝土和砂浆的损伤由过渡区开裂、骨料破裂和C-S-H的塑性滑移共同构成,对耐久性造成的隐患远大于对力学性能的影响。
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| 关 键 词： | 冲击球压 压痕-冲击应力关系 颗粒冲击 接触损伤 损伤形貌 |
A frature of contact damage of rock and concrete impacted by particles |
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| MA Zhen-zhu,YUE Han-wei,BAO Yi-wang,ZHANG Li-jun. A frature of contact damage of rock and concrete impacted by particles[J]. Journal of Yanshan University, 2009, 33(6): 510-516 |
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| Authors: | MA Zhen-zhu YUE Han-wei BAO Yi-wang ZHANG Li-jun |
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| Affiliation: | MA Zhen-zhu,YUE Han-wei,BAO Yi-wang,ZHANG Li-jun (China Building Materials Test , Certification Center,China Building Materials Academy,Beijing 100024,China) |
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| Abstract: | Indentation-impacting stress relation and contact damage of granite, marble, concrete and mortar were investigated respectively under sphere impacting by homemade instrument. The indentation-impacting stress curves were measured as following: granite and marble's indentation size grows along with impacting stress in linear relation, while concrete and mortar's linear relation are not so distinct. When the impacting stress reached critical value, granite and marble crack suddenly. For different materials, th... |
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| Keywords: | sphere impacting indentation-impacting stress relation particles impact contact damage damage morphology |
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