LIQUID RAPID-HARDENING AGENT AND RAPID-HARDENING CEMENT CONCRETE

To provide a liquid rapid-hardening agent capable of preventing a rapid-hardening inhibition of a rapid-hardening agent from occurring due to precipitation of natroalunite, thereby exhibiting excellent workability.SOLUTION: A liquid rapid-hardening agent comprises aluminum, sulfur, sodium, and fluor...

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Bibliographische Detailangaben
Hauptverfasser:	HATTA KENJI, MUROKAWA TAKAMITSU, SAKAKIBARA TAKANORI
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS LIME, MAGNESIA METALLURGY MINING REFRACTORIES SHAFTS SLAG TREATMENT OF NATURAL STONE TUNNELS
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Beschreibung
Zusammenfassung:	To provide a liquid rapid-hardening agent capable of preventing a rapid-hardening inhibition of a rapid-hardening agent from occurring due to precipitation of natroalunite, thereby exhibiting excellent workability.SOLUTION: A liquid rapid-hardening agent comprises aluminum, sulfur, sodium, and fluorine, wherein a content of natroalunite in the liquid rapid-hardening agent is 5 mass% or less. Preferably, a content of natroalunite at least after the liquid rapid-hardening agent is stored for 48 hours at 0-40°C right after being produced is 5 mass% or less. More preferably, the natroalunite is derived from a cryolite.SELECTED DRAWING: None 【課題】ナトロアルナイトの析出による急結剤の急結阻害を防ぎ、これによって良好な施工性を発揮し得る液体急結剤の提供。【解決手段】アルミニウム、硫黄、ナトリウム、及びフッ素を含む液体急結剤であって、前記液体急結剤中のナトロアルナイトの含有量が、５質量％以下である液体急結剤である。少なくとも液体急結材作製の直後から、０〜４０℃で４８時間保存した後のナトロアルナイトの含有量が、５質量％以下であることが望ましく、ナトロアルマイトが氷晶石であることがさらに望ましい。【選択図】なし