SOME BASIC AND MECHANICAL PROPERTIES OF IRON AND STEEL SLAGS AS BASE-COURSE MATERIALS

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  • 路盤材としての鉄鋼スラグの基礎的性質と力学的特性
  • ロバンザイ トシテノ テッコウ スラグ ノ キソテキ セイシツ ト リキガクテ

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Abstract

The ultimate purpose of the present study is to evaluate the performance of asphalt pavements containing iron and steel slag base courses. As the first step of the purpose, this paper describes some basic and mechanical properties of slag materials. In the former description, the major emphasis is placed on the introduction of a newly proposed compound slag, namely, a mixture of 50% by weight of steel-making slag, 30% by weight of blast-furnace slag and 20% by weight of granurated slag. This compound slag exhibited more improved hydraulic setting behavior, especially at early curing ages, than the blast-furnace slag itself. In the latter, resilient constants, accumulative plastic strains and fatigue properties of the compound slag specimens are discussed by comparing with those of each reference material, being blast-furnace slag or crushed stone. The regressed equations for these characterization data, regarding some of the number of stress application, stress state and curing age, were verified through the comparison between observed and computed results for each corresponding behavior in pavements.

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