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爆炸冲击下混凝土触变后的强度和微结构特征
STRENGTH AND MICROSTRUCTURE OF CONCRETE AFTER THIXOTROPY UNDER BLASTING
【摘要】 实验研究了爆炸冲击作用下混凝土触变后的强度和微结构特征.结果表明,混凝土触交后的微结构与爆炸荷载强度、混凝土含水量及骨料有关.触变后的混凝土强度高于正常凝结混凝土强度,提高程度决定于爆炸应力波强度和混凝土的微结构.
【Abstract】 The strength and microstructure of con- crete after thixotropy under blasting are studied by tests. Results indicate that the microstructure of concrete after thixotropy is related to blasting, wa- ter content and aggregate of concrete. The strength of concrete after thixotropy is higher than that nor- mally congealed, and the increase of strength de- pends on the intensity of blast wave and microstruc- ture of concrete.
【关键词】 爆炸冲击;
触交;
混凝土强度;
微结构;
【Key words】 blasting concussion; thixotropy; strength of concrete; micro-structure;
【Key words】 blasting concussion; thixotropy; strength of concrete; micro-structure;
【基金】 国家自然科学基金项目(59378380)资助
- 【文献出处】 力学与实践 ,Mechanics and Engineering , 编辑部邮箱 ,2001年05期
- 【分类号】TU528.0
- 【被引频次】7
- 【下载频次】157