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首页> 外文会议>NDE/NDT for Highways and Bridges >Evaluation of Long-Term Performance of Soil Stabilization with Falling Weight Deflectometer (FWD) Testing
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Evaluation of Long-Term Performance of Soil Stabilization with Falling Weight Deflectometer (FWD) Testing

机译：落叶偏移仪（FWD）检测中土壤稳定长期性能评价

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To study the benefit of soil stabilization, four test pavement sections were constructed on State Route 2 in Erie County, Ohio in 2001, with subgrade soil stabilized with 6% cement, 5% lime, 3% lime plus 3% cement, for three stabilized sections, and one control section without stabilization. The Falling Weight Deflectometer (FWD) testing was conducted during and after the construction of test sections. The back-calculation technique was then used to estimate the modulus of the stabilized soils. The analysis based on the measured deflections shows that the soil stabilized with 6% cement gains most strength initially. However, interestingly, the 5% lime stabilized subgrade continues to gain strength many years after construction. The modulus of stabilized subgrade soil increases 38% to 43% from 2001 to 2009, which are consistent with other tests performed in laboratory. The FWD testing has provided valuable information on the long-term performance of soil stabilization used with pavements constructed in a cold region.
机译：为研究土壤稳定的益处，2001年俄亥俄州伊利县的国家航线2中建造了四个试验路面部分，用甲骨水泥稳定，5％石灰，3％石灰加3％水泥，三个稳定部分和一个无稳定的控制部分。在测试部分的构建期间和之后进行下降的重量偏转仪（FWD）测试。然后使用背部计算技术来估计稳定的土壤的模量。基于测量偏转的分析表明，最初，土壤稳定6％的水泥稳定，最初是大多数强度。然而，有趣的是，5％石灰稳定的路基继续在建设后多年增加力量。稳定的路基土壤模量从2001年到2009年增加了38％至43％，这与实验室中进行的其他试验一致。 FWD测试提供了有关在寒冷地区建造的路面使用的土壤稳定性的长期性能的宝贵信息。

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