Fundamental Studies on the Utilization of the Air-cooled Slag from Incineration Ash from Municipal Solid Waste as Coarse Aggregate for Concrete

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  • ごみ焼却灰溶融スラグのコンクリート用粗骨材としての利用に関する基礎的研究
  • ゴミ ショウキャクバイ ヨウユウ スラグ ノ コンクリートヨウソコツザイ ト シテ ノ リヨウ ニ カンスル キソテキ ケンキュウ

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Abstract

The objective of this study is to examine the possibility of the utilization as a coarse aggregate for the concrete of air-cooled slag from incineration ash from municipal solid waste. We inspected the quality of the 3 kinds of air-cooled slag (slag O, H and K), and concrete that used its as a coarse aggregate in research. As a result, the following have been clarified:(1) All of the slag have excellent physical and chemical properties as coarse aggregate for the concrete, though SO3 content is abounding.(2) Almost all slag of the slag elutes hardly any heavy metals at all.(3) The strength of the concrete using the slag aggregate were equal to or lower than ordinary concrete.(4) The freeze-thaw resistance of the concrete using slag 0 is high, but the concrete using slag K and H is very low.

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