CONCRETE COMPOSITION, HARDENED CONCRETE, AND BRIDGE PRE-STRESSED CONCRETE STRUCTURE INCLUDING PIER STRUCTURE

To provide a concrete composition having an excellent effect of preventing salt penetration and suppressing its alkali-silica reaction and its self-shrinkage.SOLUTION: A concrete composition for use in a bridge pre-stressed concrete structure including a pier structure, contains cement, calcium alum...

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Bibliographische Detailangaben
Hauptverfasser:	YOSHIZAWA CHIAKI, HONMA KAZUYA, TAWARA MICHIKAZU, SASAKI TAKASHI, TANAKADATE YUTO, WU CHENGNING
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARTIFICIAL STONE ASSEMBLY OF BRIDGES CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CONSTRUCTION OF BRIDGES CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES FIXED CONSTRUCTIONS LIME, MAGNESIA METALLURGY OR VIADUCTS REFRACTORIES SLAG TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	To provide a concrete composition having an excellent effect of preventing salt penetration and suppressing its alkali-silica reaction and its self-shrinkage.SOLUTION: A concrete composition for use in a bridge pre-stressed concrete structure including a pier structure, contains cement, calcium aluminate powder containing CaO-2Al2O3, coarse aggregate and water, and contains at least two or more of blast furnace slag fine powder containing gypsum, blast furnace slag fine aggregate and fine aggregate other than the blast furnace slag fine aggregate, or contains blast furnace fine aggregate alone.SELECTED DRAWING: None 【課題】塩分浸透抑制効果が高く、アルカリシリカ反応が抑制され、自己収縮が抑制される、コンクリート組成物を提供する。【解決手段】桟橋構造を含む橋梁プレストレストコンクリート構造物に使用するコンクリート組成物であって、セメントと、ＣａＯ・２Ａｌ２Ｏ３を含有するカルシウムアルミネート粉末と粗骨材と水とを含有し、石膏を含有する高炉スラグ微粉末、高炉スラグ細骨材、高炉スラグ細骨材以外の細骨材のうち少なくとも２つ以上、又は、高炉スラグ細骨材のみを含有する、桟橋構造を含む橋梁プレストレストコンクリート構造物に使用するコンクリート組成物である。【選択図】なし