METHOD FOR PRODUCING ARTIFICIAL STONE MATERIAL

WIPO Patent Application WO/2011/136395

A1

Disclosed is a method for stably producing an artificial stone material having a strength equal to or higher than a semi-hard stone using large amounts of mud such as dredged spoil. When producing the artificial stone material by hydration hardening of a mixed material containing mud and a binder, the mixed material satisfies the following conditions (a)-(c). (a) The mixed material contains 40 percent by volume or more of mud per 100 percent by volume of the mixed material. (b) The binder is composed of at least one component selected from a group consisting of blast furnace slag micropowder, blast furnace slag micropowder added with an alkaline stimulant, portland blast furnace slag cement, and ordinary portland cement. (c) The amount of the binder has a mass ratio of 1.7 times or more relative to soil particles (solid content) in the mud, and satisfies (mass of the blast furnace slag micropowder + mass of lime powder + mass of hydrated lime + mass of ordinary portland cement ×2)/(mass of water in the mixed material)<2.0, and when further blending fly ash as a part of the binder, satisfies (mass of the blast furnace slag micropowder + mass of lime powder + mass of hydrated lime + mass of ordinary portland cement ×2 + mass of fly ash ×0.35)/(mass of water in the mixed material)≤1.5.

TAKAHASHI, Katsunori (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
高橋　克則 (〒11 東京都千代田区内幸町二丁目２番３号ＪＦＥスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
WATANABE, Keiji (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
渡辺　圭児 (〒11 東京都千代田区内幸町二丁目２番３号ＪＦＥスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
YABUTA, Kazuya (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
薮田　和哉 (〒11 東京都千代田区内幸町二丁目２番３号ＪＦＥスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
HONDA, Hideki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
本田　秀樹 (〒11 東京都千代田区内幸町二丁目２番３号ＪＦＥスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)

JP2011/060801

November 03, 2011

April 28, 2011

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JFE STEEL CORPORATION (2-3 Uchisaiwai-cho 2-chome, Chiyoda-ku Tokyo, 11, 〒1000011, JP)
ＪＦＥスチール株式会社 (〒11 東京都千代田区内幸町二丁目２番３号 Tokyo, 〒1000011, JP)
TAKAHASHI, Katsunori (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
高橋　克則 (〒11 東京都千代田区内幸町二丁目２番３号ＪＦＥスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
WATANABE, Keiji (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
渡辺　圭児 (〒11 東京都千代田区内幸町二丁目２番３号ＪＦＥスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
YABUTA, Kazuya (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)
薮田　和哉 (〒11 東京都千代田区内幸町二丁目２番３号ＪＦＥスチール株式会社 知的財産部内 Tokyo, 〒1000011, JP)
HONDA, Hideki (JFE STEEL CORPORATION 2-3, Uchisaiwai-cho 2-chome, Chiyoda-k, Tokyo 11, 〒1000011, JP)

C04B28/08; C02F11/00; C04B7/19; C04B18/14; C04B18/30; C09K17/04; C09K17/10; E01C7/30; C09K103/00

OCHIAI, Kenichiro (JFE Techno-Research Corporation 7th Floor, Yanagiya Building, 1-10, Nihonbashi 2-chome, Chuo-k, Tokyo 27, 〒1030027, JP)

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