| 应用回弹超声方法评定火灾高温静置混凝土抗压强度的试验研究 |
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| 引用本文： | 吕天启,赵国藩,林志伸,岳清瑞.应用回弹超声方法评定火灾高温静置混凝土抗压强度的试验研究[J].混凝土,2002(8):21-23,32. |
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| 作者姓名： | 吕天启 赵国藩 林志伸 岳清瑞 |
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| 作者单位： | 1. 大连理工大学,土木建筑学院,辽宁,大连,116024
2. 国家工业建筑诊断与改造工程技术研究中心,北京,100088 |
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| 基金项目： | 中国工程建设标准化协会《火灾后建筑结构可靠性鉴定标准》编制基金资助 (98)建标协字第 0 8号 )，冶金部建筑研究总院科研基金资助 (990 2 4 ) |
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| 摘 要： | 火灾高温作用后，混凝土的抗压强度将发生变化。通过大量试验，研究了应用回弹和超声法评定火灾高温后考虑静置时间影响的混凝土抗压强度的方法，给出了高温后混凝土抗压强度与回弹值和超声波速的拟合回归公式。试验数据可作为编制《火灾后建筑结构可靠性鉴定标准》的依据。
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| 关 键 词： | 回弹超声方法 火灾 高温 静置 混凝土 抗压强度 试验 |
| 文章编号： | 1002-3550(2002)08-0021-04 |
The experimental research on applying rebound and ultrasonic to assess compressive strength of concrete subjected to fire and considered standing time effect after fire |
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| LV Tian qi ,ZHAO Guo fan ,LIN Zhi shen ,YUE Qing rui.The experimental research on applying rebound and ultrasonic to assess compressive strength of concrete subjected to fire and considered standing time effect after fire[J].Concrete,2002(8):21-23,32. |
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| Authors: | LV Tian qi ZHAO Guo fan LIN Zhi shen YUE Qing rui |
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| Affiliation: | LV Tian qi 1,ZHAO Guo fan 1,LIN Zhi shen 2,YUE Qing rui 2 |
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| Abstract: | Compression strength of concrete after high temperature in fire will be changed.Methods of rebound and ultrasonic were used to assess the compression strength considered the stewing time effect in many tests.Regressive equation was obtained about compression strength to rebound value and ultrasonic speed value.Data in these tests can provide a basis to establish the criterion of structure reliability assessment subjected to fire. |
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| Keywords: | ultrasonic rebound fire standing concrete compression strength |
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