| 摘要: |
| 采用加速度计测定了冲击荷载作用下普通混凝土与水泥乳化沥青砂浆（CA砂浆）试件以及试件下部钢板的振动加速度随时间的变化，并用落锤法对比了普通混凝土与CA砂浆的抗冲击破坏特性.研究表明：普通混凝土受到冲击后，其振动加速度随时间衰减不明显，且振动时间较长，其下部钢板也有类似规律；CA砂浆受到冲击后，其振动加速度表现为3个明显的衰减阶段，振动时间也要短于普通混凝土，同样CA砂浆下部钢板也有类似规律；与普通混凝土相比，CA砂浆表现出较好的吸振与隔振功能.抗冲击破坏的结果表明，CA砂浆的抗冲击性能优于普通混凝土. |
| 关键词: 水泥乳化沥青砂浆（CA砂浆） 振动加速度 冲击 衰减 |
| DOI：10.3969/j.issn.1007 9629.2013.02.030 |
| 分类号: |
| 基金项目:国家自然科学基金资助项目(50878209,51208439);中央高校基本科研业务费专题项目(SWJTU12ZT05) |
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| Vibration Adsorption and Separation Capacities of CA Mortar |
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ZENG Xiao hui1, XIE You jun2, DENG De hua2, LONG Guang cheng2
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1.School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China;2.School of Civil Engineering, Central South University, Changsha 410075, China
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| Abstract: |
| Acceleration meters were used to test the vibration acceleration changing with time of the concrete and cement and emulsified asphalt mortar(CA mortar) samples as well as the steel board under the sample. The anti impacting property of concrete and CA mortar were tested by a drop hammer method. The results show that the vibration acceleration have no distinct attenuation when the concrete was impacted and the vibration time was long. The vibration of steel board under the concrete had the same behavior, however, the vibration acceleration of CA mortar after impact had three distinct attenuation periods and vibration time was shorter than that of concrete. The same is true of the steel board under the CA mortar. Comparing to the concrete, CA mortar has better property of adsorption and separation capacity of vibration. The anti impacting property of CA mortar is also better than that of concrete. |
| Key words: cement and emulsified asphalt mortar(CA mortar) vibration acceleration impact attenuation |
