地盤材料・一般／土質安定処理・地盤改良 (8)

[III-513] Backfilling using fluidized soil-cement mixture made with excavated soil containing old fly ash

*松井 秀岳¹、石井 裕泰¹、野上 卓¹、小川 智孝²、大石 俊広² (1. 大成建設、2. 中部電力)

Keywords:fluidized soil-cement mixture, cylinder flow, unconfined compressive strength, execution management

In producing of fluidized soil-cement mixture, proper wet density of mud water is identified preliminary and used as a management value in actual construction work to satisfy required material properties. However, in the reconstruction work of the thermal power station, dealt with in this article, changeful surplus soils collected from landfilled ground had been needed to be used as a base material of fluidized soil-cement mixture. In accordance with preliminary laboratory mixing test, availability of surplus soils as a base material was checked before mixing. Finally, changeful surplus soils have been used successfully without reimplementation of mixing test.