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底 質 や 汚 泥 の安 定 化 処 理 † 麻 薙 悦 男* 岡 林 郁 夫** 市 川 宣 明** Stabilization of Mud and Sludge by the Hardening Material Consisting of Calcium Sulfate, Blast-Furnace Slag and Portland Cement by Etsuo ASANAGI*, Ikuo OKABAYASHI** and Noriaki ICHIKAWA** The purpose of this study is to provide an effective method for stabilization of mud and sludge by using the hardening material consisting of calcium sulfate, blast-furnace slag and portland cement. The results are summarized as follows: (1) The so-called two steps system is a sufficient way to stabilize mud and sludge, when a proper condition is chosen. Namely, the hardening material works effectively when it is used in the form of two kinds of admixture. One of the admixture contains mainly calcium sulfate and the other portland cement. (2) The blast-furnace slag treated with acid is used effectively as an activated admixture. These results are explained from the action of the hardning material and the chemical characteristics of soil. Also, some application examples of stabilization of bad smelling mud and sludge are given.

Stabilization of mud and sludge by the hardening material consisting of calcium sulfate, blast-furnace slag and portland cement.