METHOD FOR PRODUCING STEEL SLAG HYDRATED MATRIX
To solve a problem in which: unlike normal concrete, a steel slag hydrated matrix is difficult to control the work life during application, hydration adjustment and strength development.SOLUTION: A method for producing a steel slag hydrated matrix at least includes blending a first raw material grou...
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Zusammenfassung: | To solve a problem in which: unlike normal concrete, a steel slag hydrated matrix is difficult to control the work life during application, hydration adjustment and strength development.SOLUTION: A method for producing a steel slag hydrated matrix at least includes blending a first raw material group with a second raw material group and curing the blend, to acquire a hydrated matrix. The first raw material group at least contains (A) cement, and (B) steel slag aggregate that at least contains silicon oxide and calcium oxide, with a content of silicon oxide of 10.0 wt.% or more, a content of calcium oxide of 35.0 wt.% or more, and a content of particles with a size of 5 mm or more of 40.0 wt.% or more. The second raw material group contains (C) water, (D1) a retarder and (D2) at least one or more selected from a polycarboxylic acid copolymer, a glycol ether copolymer and salts thereof, with (D1): (D2)=10.0: 90.0-80.0: 20.0.SELECTED DRAWING: None
【課題】通常のコンクリートとは異なり,施工の可使時間,水和調整および強度発現性のコントロールが困難な鉄鋼スラグ水和固化体の課題を解決すること。【解決手段】(A)セメント、及び(B)酸化ケイ素及び酸化カルシウムを少なくとも含有し、酸化ケイ素の含有量が10.0重量%以上であり、酸化カルシウムの含有量が35.0重量%以上であり、粒径5mm以上の粒子の含有量が40.0重量%以上である、鉄鋼スラグ骨材を少なくとも含有する第1の原料群に、(C)水、(D1)遅延剤、及び(D2)ポリカルボン酸系共重合体、グリコールエーテル系共重合体及びそれらの塩から選ばれる1以上を少なくとも含有し、(D1):(D2)=10.0:90.0~80.0:20.0である第2の原料群に添加し、硬化して水和固化体を得ることを少なくとも含む、鉄鋼スラグ水和固化体の製造方法。【選択図】なし |
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