| 利用劈尖干涉测混凝土热膨胀系数 |
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| 引用本文： | 何京鸿,张永斌,卢俊书.利用劈尖干涉测混凝土热膨胀系数[J].楚雄师专学报,2013(9):28-31. |
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| 作者姓名： | 何京鸿 张永斌 卢俊书 |
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| 作者单位： | 楚雄师范学院物理与电子科学系,云南楚雄675000 |
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| 基金项目： | 楚雄师范学院科研基金项目,项目编号：11YJRCl8. |
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| 摘 要： | 用劈尖干涉表征微小变化量，其精度可达入射光半波长量级。本文研究利用劈尖干涉测量混凝土的热膨胀系数，所设计的测量装置可在-10℃到200℃范围内较为精确测量混凝土的热膨胀系数。通过本文设计方法，对工程常规比例混凝土（PSA32．5矿渣硅酸盐水泥与沙石比例为1：2）在60％到80℃测得其线胀系数为9．915×10^-6℃^-，与工程参考值8～12×10^-6℃^-很好吻合。
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| 关 键 词： | 劈尖干涉 混凝土 热膨胀系数 |
Measure the linear expansion coefficient of concrete by wedge interference |
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| Institution: | HE Jing - hong; ZHANG Yong - bin; LU Jun - shu ( Department of Physics and Electronic Science, Chnxiong Normal University, Chuxiong 675000, China) |
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| Abstract: | A measuring method was researched in this paper, which measure the linear expansion coefficient of concrete （ PSA 32.5 ） by interference of cut edge and the precision can reach half wavelength of incident light. The design improved the traditional measurement of linear expansion coefficient, which can reduce the experiment cost, improve the test accuracy. Through analyzed and discussed the experiment method, we give a new method of measuring thermal expansion coefficient of concrete. |
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| Keywords: | Wedge interference concrete thermal expansivity |
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