Experimental Study on Dynamic Properties of Nano-MgO-Modified Silty Clay

To study the dynamic properties of nano-MgO-modified soil, the contents of nano-MgO which were 0%, 1%, 2%, 3%, 4% and 5% of the dry weight for soil were added into the soil. The water content of soil samples were 16% and 22%. The variation of shear modulus and damping ratio of soil was analyzed thro...

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Bibliographic Details
Published in:International journal of geosynthetics and ground engineering 2020-06, Vol.6 (2), Article 27
Main Authors: Gao, Lei, Luo, Yi, Ren, Zhen, Yu, Xiangjuan, Wu, Kexiong
Format: Article
Language:English
Subjects:
Building Materials
Damping ratio
Engineering
Environmental Science and Engineering
Foundations
Geoengineering
Hydraulics
Magnesium oxide
Materials and Processes for Ground Engineering Infrastructure
Moisture content
Original Paper
Shear modulus
Shear strain
Soil analysis
Soil compaction
Soil dynamics
Soil properties
Soil testing
Soil water
Soils
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Summary:To study the dynamic properties of nano-MgO-modified soil, the contents of nano-MgO which were 0%, 1%, 2%, 3%, 4% and 5% of the dry weight for soil were added into the soil. The water content of soil samples were 16% and 22%. The variation of shear modulus and damping ratio of soil was analyzed through the resonant-column test of the modified soil. The results show that with the increasing of shear strain, the shear modulus of soil decreases and the damping ratio of soil increases, the shear modulus for nano-MgO-modified soil reaches the maximum when the content of nano-MgO is 5%. The maximum shear modulus of soil with water content of 22% is smaller than that of soil with water content 16% under the same confining pressure, the shear modulus of soil increases linearly with the increasing of nano-MgO content. The reinforcement mechanism of the nano-MgO-modified soil was analyzed such as pore filling effect of nano-MgO, effect of water content, effect of vibration compaction, interaction between a nano-MgO group and a soil particle, interaction between several nano-MgO groups and soil particles.
ISSN:2199-9260
2199-9279
DOI:10.1007/s40891-020-00210-5