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Liquefaction Potential of Sand with Non-Plastic Fines with the Same Depositional Energy
The influence of non-plastic fines on the undrained behavior of sand have been studied in the laboratory using different parameters for comparison. Results have not been conclusive so far, either because results change according to the parameter of comparison, because results do not cover a large range of fines content, or because results are not easily translated into field conditions. Taken this into account, a laboratory testing program was conducted on loose sand and different fines contents, keeping the same compaction energy and the coefficient of volume compressibility. A microstructure explanation is provided to explain the different responses and finally an approach to correlate the outcome of laboratory tests to field results is proposed, using the deformation modulus of soil during consolidation. There is a threshold point where the addition of non-plastic fines actually contributes to increase the liquefaction resistance of soils. It was found that the arrangement of clean sand and non-plastic fines, defines the liquefaction potential of loose soils.
Liquefaction Potential of Sand with Non-Plastic Fines with the Same Depositional Energy
The influence of non-plastic fines on the undrained behavior of sand have been studied in the laboratory using different parameters for comparison. Results have not been conclusive so far, either because results change according to the parameter of comparison, because results do not cover a large range of fines content, or because results are not easily translated into field conditions. Taken this into account, a laboratory testing program was conducted on loose sand and different fines contents, keeping the same compaction energy and the coefficient of volume compressibility. A microstructure explanation is provided to explain the different responses and finally an approach to correlate the outcome of laboratory tests to field results is proposed, using the deformation modulus of soil during consolidation. There is a threshold point where the addition of non-plastic fines actually contributes to increase the liquefaction resistance of soils. It was found that the arrangement of clean sand and non-plastic fines, defines the liquefaction potential of loose soils.
Liquefaction Potential of Sand with Non-Plastic Fines with the Same Depositional Energy
Alberto, Yolanda (author) / Towhata, Ikuo (author)
Geotechnical Earthquake Engineering and Soil Dynamics V ; 2018 ; Austin, Texas
2018-06-07
Conference paper
Electronic Resource
English
Liquefaction Potential of Sand with Non-Plastic Fines with the Same Depositional Energy
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