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Geomechanics and Engineering Volume 1, Number 2, June 2009 , pages 169-178 DOI: https://doi.org/10.12989/gae.2009.1.2.169 |
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Compressibility of broken rock-fine grain soil mixture |
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Ming Xu, Erxiang Song and Guangxu Cao
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| Abstract | ||
| Due to the enormous amount of fills required, broken rock-fine grain soil mixtures have been increasingly used in the construction of high-fill foundations for airports, railways and highways in the mountain areas of western China. However, the compressibility behavior of those broken rock-fine grain soil mixtures remains unknown, which impose great uncertainties for the performance of those high-fill foundations. In this research, the mixture of broken limestone and a fine grain soil, Douposi soil, is studied. Large oedometer tests have been performed on specimens with different soil content. This research reveals the significant influence of fine grains on the compressibility of the mixture, including immediate settlement, creep, as well as wetting deformation. | ||
| Key Words | ||
| compressibility; high-fill foundation; long term settlement; wetting deformation | ||
| Address | ||
| Ming Xu: Department of Civil Engineering, Tsinghua University, Beijing 100084, China Erxiang Song: Department of Civil Engineering, Tsinghua University, Beijing 100084, China Guangxu Cao: Department of Civil Engineering, Tsinghua University, Beijing 100084, China | ||