Journal
KSCE JOURNAL OF CIVIL ENGINEERING
Volume 24, Issue 12, Pages 3584-3593Publisher
KOREAN SOCIETY OF CIVIL ENGINEERS-KSCE
DOI: 10.1007/s12205-020-1608-7
Keywords
Bottom ash; Crushability; Compression index; Shear wave velocity; Small strain shear stiffness
Categories
Funding
- National Research Foundation of Korea (NRF) - Korean government [NRF-2019R1C1C1005310]
Ask authors/readers for more resources
This study investigates the small strain stiffness (G(max)) of six coal bottom ashes in South Korea. One-dimensional compression tests using an instrumented oedometer cell were performed to measure the shear wave velocity (V-s), and the compression indices (C-c) of the six different bottom ashes were also explored in this study. The results demonstrate that, at low confinement, theC(c)of bottom ashes are comparable to that of sand under a similar void ratio. However, at high confinement, the bottom ash shows very highC(c)compared to sand due to the crushability of the weak and porous bottom ash particles upon confinement. The variations of alpha and beta, which areV(s)parameters (i.e.,V-s=alpha(sigma '(m)/1 kPa)(beta)), with differentC(c)values of the tested bottom ashes are consistent with the existing empirical relationship. TheG(max)of tested bottom ashes can be adequately captured by the existingG(max)estimating formula for angular sand, indicating that theG(max)of bottom ash is highly comparable to that of sand with a similar void ratio and confining stress.
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