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廃棄物処理施設の確保の制約や処分場の埋め立て量に限界があることから廃棄物を有効利用するための技術開発が図られている筆者らは粒状廃棄物がL型擁壁の凍上対策の置換材料として代替可能であるかを屋外実験で検証し廃棄物の新たな利用方法の開発を行ってきた本論文では袋詰めにした粒状廃棄物EPS減容品ガラスカレットをプレキャストコンクリートL型擁壁に裏込めして地盤凍結期における裏込め中の凍結状況や壁体変位の動態観測を行った2シーズンにわたる実験から凍上抑制置換材料として粒状廃棄物の活用が十分可能であることを明らかにしたConsiderable generation of industrial waste is becoming a serious social problem. Under these circumstances it has therefore become necessary to develop effective strategies for the utilization of wastes. This study employed field trials to investigate the application granular waste for use as replacement material for frost prevention. A new method for dealing with such waste using soil bags filled with granular waste consisting of glass cullet and expanded poly-sterol to facilitate reduced volumes was used to backfill precast concrete L-type retaining walls. From November 2002 to May 2004, the frozen state of backfill soil and displacement of the walls were measured. These measurements revealed that granular waste is suitable for use as a frost heave prevention material

COUNTERMEASURES FOR FROST HEAVE OF CONCRETE L-TYPE RETAINING WALL BACKFILLED WITH GRANULAR WASTE