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A platform for research: civil engineering, architecture and urbanism
HYDRATED SOLIDIFIED BODY USING DESULFURIZATION SLAG
PROBLEM TO BE SOLVED: To provide a hydrated solidified body that is blended with a comparatively large amount of desulfurization slag as a part of a binder, has sufficient strength and hardly causes expansion failure due to the blending of desulfurization slag.SOLUTION: The hydrated solidified body comprises: as an aggregate, steel slag having a water absorption percentage of 3.5% or more; and as a binder, blast furnace slag fine powder or blast furnace slag fine powder+a pozzolan hardening material and desulfurization slag having a ratio of particles having particle diameter of equal to or less than 1 mm and a particle size of not less than 400 μm of 25 mass% or more in which the mass ratio of desulfurization slag/(blast furnace slag fine powder or blast furnace slag fine powder+a pozzolan hardening material) is 0.02 to 0.75, preferably, 0.25 to 0.75. The hydrated solidified body has sufficient strengh applicable to artificial stone for use in a sea area and the like and has such excellent performance that it has low expansibility and hardly causes expansion failure although it is blended with a comparatively large amount of desulfurization slag as a part of a binder. Furthermore, the hydrated solidified body can be produced at a low cost because it does not use cement or slaked lime as a binder.SELECTED DRAWING: None
【課題】結合材の一部として比較的多量の脱硫スラグを配合した水和固化体であって、十分な強度を有し、脱硫スラグの配合に起因する膨張破壊が生じ難い水和固化体の提供。【解決手段】吸水率が３．５％以上の製鋼スラグを骨材とし、高炉スラグ微粉末又は高炉スラグ微粉末＋ポゾラン硬化性材料と、粒径が１ｍｍ以下であって、且つ粒径４００μｍ以上の粒子の割合が２５質量％以上である脱硫スラグを結合材とし、脱硫スラグ／（高炉スラグ微粉末または高炉スラグ微粉末＋ポゾラン硬化性材料）の質量比を０．０２〜０．７５好ましくは０．２５〜０．７５とする水和固化体。前記水和固化体は、海域用途の人工石材等に適用できる十分な強度を有し、結合材の一部として比較的多量の脱硫スラグを配合するにも拘わらず膨張性が低く、膨張破壊が生じ難い優れた性能を有する。亦、結合材としてセメントや消石灰を使用しないため、低コストに製造できる。【選択図】なし
HYDRATED SOLIDIFIED BODY USING DESULFURIZATION SLAG
PROBLEM TO BE SOLVED: To provide a hydrated solidified body that is blended with a comparatively large amount of desulfurization slag as a part of a binder, has sufficient strength and hardly causes expansion failure due to the blending of desulfurization slag.SOLUTION: The hydrated solidified body comprises: as an aggregate, steel slag having a water absorption percentage of 3.5% or more; and as a binder, blast furnace slag fine powder or blast furnace slag fine powder+a pozzolan hardening material and desulfurization slag having a ratio of particles having particle diameter of equal to or less than 1 mm and a particle size of not less than 400 μm of 25 mass% or more in which the mass ratio of desulfurization slag/(blast furnace slag fine powder or blast furnace slag fine powder+a pozzolan hardening material) is 0.02 to 0.75, preferably, 0.25 to 0.75. The hydrated solidified body has sufficient strengh applicable to artificial stone for use in a sea area and the like and has such excellent performance that it has low expansibility and hardly causes expansion failure although it is blended with a comparatively large amount of desulfurization slag as a part of a binder. Furthermore, the hydrated solidified body can be produced at a low cost because it does not use cement or slaked lime as a binder.SELECTED DRAWING: None
【課題】結合材の一部として比較的多量の脱硫スラグを配合した水和固化体であって、十分な強度を有し、脱硫スラグの配合に起因する膨張破壊が生じ難い水和固化体の提供。【解決手段】吸水率が３．５％以上の製鋼スラグを骨材とし、高炉スラグ微粉末又は高炉スラグ微粉末＋ポゾラン硬化性材料と、粒径が１ｍｍ以下であって、且つ粒径４００μｍ以上の粒子の割合が２５質量％以上である脱硫スラグを結合材とし、脱硫スラグ／（高炉スラグ微粉末または高炉スラグ微粉末＋ポゾラン硬化性材料）の質量比を０．０２〜０．７５好ましくは０．２５〜０．７５とする水和固化体。前記水和固化体は、海域用途の人工石材等に適用できる十分な強度を有し、結合材の一部として比較的多量の脱硫スラグを配合するにも拘わらず膨張性が低く、膨張破壊が生じ難い優れた性能を有する。亦、結合材としてセメントや消石灰を使用しないため、低コストに製造できる。【選択図】なし
HYDRATED SOLIDIFIED BODY USING DESULFURIZATION SLAG
脱硫スラグを用いた水和固化体
ICHIKAWA KOICHI (author) / ISHIDA TADAHIRA (author)
2017-01-26
Patent
Electronic Resource
Japanese
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