Study of Capillary Barriers that Use Industrial Byproducts

Abstract

We compared the efficiency of capillary barriers that use several different industrial byproducts as cover sands. Unlike natural sands, such byproducts have smaller correlations between grain size distribution and drainage efficiency. On the other hand, the concentration of fluorine in cover sands that use molten slag varied as a function of the degree of compaction.
We also constructed a capillary barrier in which ferronickel slag was used as an alternative material for sand in final disposal. The environmental safety of this system was confirmed, and it succeeded in practical use.
As a result of this study, we suggest a design procedure to use alternatives to natural sands for the construction of capillary barriers.