LIGHT-WEIGHT HIGH-STRENGTH CONCRETE

PURPOSE: To obtain a light-weight concrete excellent in fluidity, having a high strength and a high modulus of elasticity by using an artificial aggregate of fly ash having a fixed absolute dry specific gravity as a coarse aggregate. CONSTITUTION: This light-weight high-strength concrete uses an art...

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Bibliographische Detailangaben
Hauptverfasser:	TOMOSAWA FUMINORI, TAKASAO KOUICHI, SONE NORIAKI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT 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:	PURPOSE: To obtain a light-weight concrete excellent in fluidity, having a high strength and a high modulus of elasticity by using an artificial aggregate of fly ash having a fixed absolute dry specific gravity as a coarse aggregate. CONSTITUTION: This light-weight high-strength concrete uses an artificial aggregate of fly ash having 1.8-2.2 absolute dry specific gravity as a coarse aggregate. The artificial aggregate of fly ash is obtained by baking a granule consisting essentially of fly ash and comprises =50wt.% of particles having >=10mm particle diameters. The percentage of absolute volume of the artificial aggregate of fly ash is >=65%, preferably 63-70%, the unit volume weight of the concrete is 2.0-2.2kg/1 and the unit cement (e.g. Portland cement) amount is 400kg/m . The added amount of a high-performance water reducing agent (a polycarboxylic acid-based high- performance water reducing agent) is 0.1-10wt.% based on 100 pts.wt. of a binder. Calcium nitrite is effectively added.