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| 混凝土结构抗冻性超声检测方法的研究 | |
| 引用本文： | 刘卫东,张东芹,王依民. 混凝土结构抗冻性超声检测方法的研究[J]. 水利学报, 2003, 34(3): 0125-0128 |
| 作者姓名： | 刘卫东 张东芹 王依民 |
| 作者单位： | 1. 东华大学,材料科学与工程学院,上海200051;山东省水利科学研究院,山东,济南250013 2. 山东建筑工程学院,山东,济南250014 3. 东华大学,材料科学与工程学院,上海200051 |
| 摘 要： | 依据固体结构动弹模与表面波速度的本构关系，采用超声波技术检测混凝土冻融试件的动弹 模，并 与共振法测出的动弹模进行对比，总结出其内在相关规律，建立起预报混凝土动弹模的回归 方程，由测得 的波速计算出相应的动弹模，再利用动弹模之比评定出混凝土结构的抗冻性。通过初步试验 和检测方法的研究表明，此研究方法思路切实可行，可供混凝土耐久性检测工程参考。 |
| 关 键 词： | 超声检测； 共振法； 混凝土结构； 抗冻性 |
| 文章编号： | 0559-9350(2003)03-0125-04 |
| 修稿时间： | 2002-01-18 |
Study on the ultrasonic checking method for frost resistance in concrete structure |
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| LIU Wei dong. Study on the ultrasonic checking method for frost resistance in concrete structure[J]. Journal of Hydraulic Engineering, 2003, 34(3): 0125-0128 | |
| Authors: | LIU Wei dong |
| Affiliation: | Material Science and Engineering College,Donghua University, Shanghai 200051,China |
| Abstract: | According to the basic relationship between dynamic elasticity modulus and velocity of surface wave in solid structure,the authors checked the modulus in concrete freeze thaw specimen by using ultrasonic wave method and contrasted it with the modulus by using traditional resonance method.The regression equation for dynamic modulus for forecasting concrete elasticity was derived.The relevant dynamic modulus elasticity was calculated with the measured wave velocity.Then the frost resistance in concrete structure by the ratio of dynamic elasticity modulus was evaluated.A preliminary test on the results indicated that the method was feasible and can be applied in checking concrete durability. |
| Keywords: | ultrasonic checking resonance method concrete structure dynamic elasticity modulus frost resistance |
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