CEMENT REPLACEMENT AGENT COMPOSITION COMPRISING REJECT FLY ASH

A cement replacement composition useful as a concrete additive is provided to reuse reject fly ash, glass polishing agent sludge and/or paper-making sludge to replace typical cement with the composition by admixing coarse reject fly ash generated during purification of fly ash for ready-mixed concre...

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Bibliographische Detailangaben
Hauptverfasser:	PARK, CHUN HO, PARK, WON CHUN, MOON, KYOUNG JU, PARK, YOUNG CHUN
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS LIME, MAGNESIA METALLURGY REFRACTORIES SLAG TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	A cement replacement composition useful as a concrete additive is provided to reuse reject fly ash, glass polishing agent sludge and/or paper-making sludge to replace typical cement with the composition by admixing coarse reject fly ash generated during purification of fly ash for ready-mixed concrete with the glass polishing agent sludge and the paper-making sludge to form the composition. The cement replacement composition comprises: 40-60wt.% of reject fly ash having specific surface area of 2,000-2,900cm^2/g; 5-15wt.% of paper-making sludge having specific surface area of 5,000-8,000cm^2/g; and the balance of glass polishing agent sludge in dried condition having specific surface area of 5,000-10,000cm^2/g. The composition has blain specific surface area of more than 2,800cm^2/g and is used to replace typical cement.