Experimental study on scale effect of mechanical properties of rockfill materials

WU Li-qiang; YE Fei; LIN Wan-qing

doi:10.11779/CJGE2020S2025

Volume 42 Issue S2

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Chinese Journal of Geotechnical Engineering > 2020 > 42(S2): 141-145. > DOI: 10.11779/CJGE2020S2025

WU Li-qiang, YE Fei, LIN Wan-qing. Experimental study on scale effect of mechanical properties of rockfill materials[J]. Chinese Journal of Geotechnical Engineering, 2020, 42(S2): 141-145. DOI: 10.11779/CJGE2020S2025

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Experimental study on scale effect of mechanical properties of rockfill materials

1.
Zhejiang Institute of Hydraulics and Estuary (Zhejiang Institute of Marine Planning and Design), Hangzhou 310020, China
2.
Zhejiang Provincial Key Laboratory of Hydraulic Disaster Prevention and Mitigation, Hangzhou 310020, China
3.
Zhejiang Water Conservancy and Hydropower Engineering Quality and Safety Management Center, Hangzhou 310012, China

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Received Date: August 09, 2020
Available Online: December 07, 2022

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Abstract

Abstract

Due to few experimental achievements on scale effect of mechanical properties of rockfill materials, series of triaxial tests are made with different gradations and maximum diameters. The maximum diameters are 20, 40 and 60 mm. The 9 groups of gradations are designed with the same fractal dimensions under differecnt maximum diameters. The values of fractal dimensions are 2.3, 2.6 and 2.7, respectively, which represents coarse materials, medial materials and fine materials. The sample preparation standard is designed under the same relative density. The results show that the internal friction angles, initial tangent moduli and bulk moduli increase with the increase of the maximum diameters.
- Key words: rockfill material,
- mechanical property,
- fractal dimension,
- scale effect,
- sample preparation standard

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References

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