The objective of this study is to investigate a backfilling process that can achieve uniform
strength development in the depth direction of boreholes created when existing piles are …

Around the world, and especially in Japan, the tearing down of social infrastructure,
including civil engineering structures, has been increasing due to the aging of these …

Many urban areas in Japan are located on soft ground and there are numerous buildings
with pile foundations. Therefore, when dismantling a building, it is necessary to remove the …

In recent years, there has been an increasing demand to replace ancient structures. The
removal of such structures also involves the removal of the existing piles that supported the …

The demolition of an outdated infrastructure includes the removal of both the superstructure
and the substructures. High-rise buildings have piles installed in them. Therefore, to reclaim …

Various issues have been encountered in the removal work of existing piles, such as
existing piles being left in the ground, the subsidence of the surrounding ground and the …

The teardowns of social infrastructures, including civil engineering structures, have been
increasing due to the aging of these structures, which were built in a period of high …

This paper critically evaluates and proposes innovative approaches to address the technical
challenges associated with extracting existing piles and backfilling the associated …

Certain issues may be encountered when traditional composite fillers are mixed with cement
and bentonite (CF-CB) and applied to cavities in the ground. These issues include the …

In recent years, removal work of existing piles has been increasing, and many pulling-out
methods for existing piles are being applied. As for the present situation, there is concern …