An insight into the mechanical behavior of binary granular soils--颗粒学报PARTICUOLOGY

Vahidi-Nia, F., Lashkari, A., & Binesh, S. M. (2015). An insight into the mechanical behavior of binary granular soils. Particuology, 21, 82-89. https://doi.org/10.1016/j.partic.2014.11.006

An insight into the mechanical behavior of binary granular soils

F. Vahidi-Nia, A. Lashkari ^*, S.M. Binesh

Department of Civil and Environmental Engineering, Shiraz University of Technology, Shiraz, Iran

10.1016/j.partic.2014.11.006

Volume 21, August 2015, Pages 82-89

Received 12 July 2014, Revised 24 October 2014, Accepted 9 November 2014, Available online 25 February 2015, Version of Record 6 June 2015.

E-mail: lashkari@sutech.ac.ir; lashkari_ali@hamyar.net

Highlights

• Participation of fines in the load-carrying structure of binary sand mixtures was investigated.

• Fines participation factor increased with fines content, depending on particle shapes.

• Grading of constituents and density of mixture affected fines participation factor.

Abstract

This paper investigates the participation of the fines fraction in the load-carrying structure of binary mixtures of granular soils. For this purpose, various fractions of two fine sands were added to two coarse sands with the same particle size distribution, but different particle shape characteristics. Based on the results of 144 direct shear tests, it was found that fines participation in the load-bearing structure increases with fines content. At the same fines content, the participation of the fines in the load-carrying structure of loose mixtures is greater than in samples that were initially compacted. In addition, it was observed that fines participation rises with the increase in the average size of the fines fraction.

Graphical abstract

Keywords

Sand; Particle size ratio; Fines content; Fines participation factor; Intergranular void ratio

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