HYDRAULIC COMPOSITION

PROBLEM TO BE SOLVED: To obtain a hydraulic composition capable of reducing the elution of Cr6+ even if waste containing the Cr6+ or the like is used. SOLUTION: The hydraulic composition contains cement and a material for reducing elution of heavy metals, and the material for reducing elution of the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TAKADA MINORI, MATSUURA SHIGERU, HOSHINO SEIICHI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PROBLEM TO BE SOLVED: To obtain a hydraulic composition capable of reducing the elution of Cr6+ even if waste containing the Cr6+ or the like is used. SOLUTION: The hydraulic composition contains cement and a material for reducing elution of heavy metals, and the material for reducing elution of the heavy metals is manufactured under a reducing atmosphere at >=1,000 deg.C and consists essentially of three components of CaO, Al2O3 and SiO2 as chemical components, and contains CaO of >=20 wt.%, Al2O3 of