Applications of Air-Foamed Stabilized Soil as Potential Subgrade Material of Railway Track
Dae-Wook Park, Hai Viet Vo and Yujin Lim
International Journal of Railway, vol. 7, no. 4, pp.91-93, 2014
Abstract : In these days, use of proper soils for construction materials become more limited, but wasted soils are abundant;
therefore, the method which can use wasted soil such as soft clay has been investigated. Air-foamed stabilized soil
has been used widely, but never been used as a subgrade material. The aim of this study is to verify the use of airfoamed
stabilized soil as the subgrade construction material. Several wasted soils such as soft clay was selected to
make air-foamed stabilized soil mixtures. The air-foamed stabilized mixture design was conducted to find the optimum
quantity of stabilizing agent (cement) and air-foamed, and the effect of cement quantity and air-foamed quantity
on strength of air-foamed stabilized soil mixtures base on the test results of unconfined compression test was
investigated. As the quantity of cement is increased, the strength is increased, but the quantity of air-foamed is
increased and the strength is decreased. Elastic moduli based on unconfined compression strength were obtained to
use as subgrade of railway track design.
Keyword : Air-foamed stabilized soil, Railway, Compressive strength, Subgrade |