Quantitative analysis of the relationship between shear strength and fractal dimension of solidified dredger fill with different fly ash content under monotonic shear

• Autorzy: Yang S. , Liu W. , Liu H.

Identyfikatory

DOI

10.2478/pomr-2018-0084

• Języki publikacji: EN

Abstrakty

EN

The dredger fill of Shanghai Hengsha Island Dongtan is solidified by curing agents with different fly ash content, and the shear strength index of solidified dredger fill is measured by the direct shear test. The microscopic images of solidified dredger fill are obtained by using SEM. The microscopic images are processed and analyzed by using IPP, and the fractal dimension including particle size fractal dimension Dps, aperture fractal dimension Dbs and particle surface fractal dimension Dpr is calculated by fractal theory. The quantitative analysis of the relationship between shear strength index and fractal dimension of solidified dredger fill is done. The research results show that the internal friction angle and the cohesion are closely related to the fly ash content λ and the curing period T, and the addition of fly ash can improve the effect of curing agent; There is no obvious linear relationship between the internal friction angle and the three fractal dimensions; The smaller particle surface fractal dimension Dpr and particle size fractal dimension Dps, the larger aperture fractal dimension Dbs, the greater the cohesion, and the cohesion has a good linear relationship with three fractal dimensions, and the correlation coefficient R2 is above 0.91.

Słowa kluczowe

EN

curing agent; fly ash; shear strength; fractal dimension; SEM

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2018
• Tom: S 2
• Strony: 132--138
• Opis fizyczny: Bibliogr. 15 poz., rys., tab.

Twórcy

autor

Yang S.

• Master, School of Ocean Science and Engineering, Shanghai Maritime University

autor

Liu W.

• Professor, School of Ocean Science and Engineering, Shanghai Maritime University

autor

Liu H.

• Master, School of Ocean Science and Engineering, Shanghai Maritime University

Bibliografia

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• 4. Huang Li: Quantitative Analysis of Micro-Porosity of Saturated Soft Clay and Its Fractal Description, Wuhan University of Technology, Wuhan, 2007.
• 5. Liu Xin, Fan Xiaoqiu, Hong Baoning: Experimental study of triaxial test of soils stabilized by cement mortar, Rock and Soil Mechanics, Vol.32, no.6, pp. 1676-1682, 2011.
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• 8. Wang Dongxing, Xu Weiya: Research on strength and durability of sediments solidified with high volume fly ash, Rock and Soil Mechanics, Vol.33, no.12, pp.3659-3663, 2012.
• 9. Wu Yuanfeng, Yi Guiyun, Liu Quanrun, Li Fenghai, Zhao Liwei, Ma Mingjie: Current situation of comprehensive utilization of fly ash, Clean Coal Technology, Vol.19, no.6, pp.100-104, 2013.
• 10. Xu Riqing, Deng Weiwen, Xubo, Lai Jianping, Zhan Xuegui, Xu Liyang, Lu Jianyang: Quantitative Analysis of Soft Clay Three-dimensional Porsity Based On SEM Image Information, Journal of Earth Science and Enviroment, Vol.03, pp.104-110, 2015.
• 11. Xu Riqing, Xu Liyang, Deng Weiwen, Zhu Yihong: Experimental study on soft clay contact area based on SEM and IPP, Journal of Zhejiang University (Engineering Science), Vol.08, pp.1417-1425, 2015.
• 12. Zhang Zhihong, Li Hongyan, Shi yumin: Experimental Study on Permeability Properties and Microstructure of Clay Contaminated by Cu2+,China Civil Engineering Journal, Vol.47,no.12,pp.122-129,2014.
• 13. Zhang Jiru, Hu Yong, Yu Hongling, Tao Gaoliang: Predicting soil-water characteristic curve from multi-fractal particlesize distribution of clay, Journal of Hydraulic Engineering, Vol.46, no.6, pp. 650-657, 2015.
• 14. Zhao Minghua, Dai Jie, Zhang Ling, Yin Pingbao: Fractal Theory-based Study of the Permeability of Fly Ash, Journal of Hunan University(Natural Sciences), Vol.42,no.1,pp.75-80,2015.
• 15. Zhen Zhiheng, Gao Jianwei: The Microscopic Characteristic Analysis of Red Bed Mudstone Modified Soil Based on IPP, Transportation Science and Technology, Vol.08, pp.124-127, 2015.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).