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Geotechnical Research ,2020-10-30
Treatments to Improve the Aeolian Sand Foundation in Solar Park Construction
Xiaosong Xie 1 Haijun Zhu 2 Jianhua Xiao 3 Hui Zhao 1 Can Chen 1 Zhengyi Yao 3
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DOI:10.1680/jgere.20.00041
Received 2020-08-28, accepted for publication 2020-10-29, Published 2020-10-30
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摘要

The aeolian sand in the Mohammad bin Rashid Al Maktoum (MBR) Solar Park Phase IV Project site in Dubai, United Arab Emirates, is cohesionless, uniformly graded, non-plastic fine sand, with high permeability, low shear strength, and low bearing capacity, which are properties that cause many geotechnical and structural challenges. With aeolian sand used as backfill soil, sandstone and sabkha (gatch, gypsum) excavated during field levelling were used as sand fixation material to improve the aeolian sand foundation. In a field compaction test, the compaction method, moisture content, paving thickness, number of rolling passes, backfill layer deformation, compaction coefficient, and California Bearing Ratio (CBR) were analysed to summarise the technological aspects of the compaction process. Rolling greatly improved the aeolian sand foundation, achieving the required capacity for various projects. The surface layer was stabilised by sandstonegatch, which had the strongest resistance to wind erosion. By contrast, the resistance of the sandstonegypsum layer to wind erosion was moderate and that of the sandstone layer was weak. The experiments used to improve the aeolian foundation in this study can be applied to similar desert areas on the Arabian Peninsula and in North Africa.

授权许可

Published with permission by the ICE under the CC-BY 4.0 license. (http://creativecommons.org/licenses/by/4.0/)
This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

推荐引用方式

Xiaosong Xie,Haijun Zhu,Jianhua Xiao,Hui Zhao,Can Chen,Zhengyi Yao. Treatments to Improve the Aeolian Sand Foundation in Solar Park Construction. Geotechnical Research ,(2020)

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