Journal
SOIL DYNAMICS AND EARTHQUAKE ENGINEERING
Volume 100, Issue -, Pages 371-379Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.soildyn.2017.06.016
Keywords
Bender element; Shear modulus; Calcareous sand; Particle shape; Gradation
Funding
- Erasmus Mundus Action 2, Lotus Project
Ask authors/readers for more resources
The soil small-strain shear modulus, G(0), is necessary for static and dynamic soil analyses and is often correlated to other soil properties such as density and void ratio, on their turn depending on gradation. The paper first presents a concise literature review of parameters influencing G(0) in detail. Secondly, a particle shape analysis is performed. Silica sand is found much more spherical than calcareous sand, and calcareous sand becomes more spherical after crushing. Bender element test results indicate that not only uniformity coefficient (Cu) but also particle characteristics including particle shape and stiffness are very important to G(0). G(0) of calcareous sand is found higher than that of silica sand. Indeed, with less sphericity and more angularity, the variety of particle shape in calcareous sand produces a better fabric for shear wave propagation. For calcareous sand, the test results show that particle shape is the main factor affecting Go. Less dynamic stiffness is found for particles owning more sphericity and less angularity. The increase of Cu or finer particles (at low Cu) causes a decrease in G(0). Finally, predictions of G(0) for the tested calcareous sands using empirical equations from previous studies give very high relative errors (16.7-30%).
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available