EFFECT OF CHANGE IN PROPERTIES OF GROUND IMPROVEMENT LOG PILES BURIED IN THE EARLY STAGE

Abstract

 To promote the widespread use of timber as ground improvement material, it is necessary to show that timber has the effect of ground improvement semi-permanently without biological degradation. In this study, we investigated on changes in wood properties in the early stage burying log piles of practical size under the ground below groundwater for one month. In this result, we confirmed to be maintained soundness and not biological degradation for one month, suggested that the water absorption changed depending on the density and heartwood ratio, and that the ground components flowed into the wood due to the water absorption. These results are expected to be used as a new perspective in discussing long-term durability of log piles.