WASTE GYPSUM REGENERATED CONCRETE

PROBLEM TO BE SOLVED: To recycle waste gypsum of environmental pollution waste as concrete aggregate by adding 1-2% binder into a pulverized material of the harmful waste gypsum to give strength as same as that of the conventional sand-cement based concrete, to make the amount of eluted fluorine har...

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Bibliographische Detailangaben
Hauptverfasser:	IWATANI TAKEYASU, KAKU HIKARU, DOI HIROYUKI, EGAWA TAKESHI, NISHINO YOSHIAKI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, ORTHE LIKE DISPOSAL OF SOLID WASTE FIXED CONSTRUCTIONS LIME, MAGNESIA MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR METALLURGY PERFORMING OPERATIONS RECLAMATION OF CONTAMINED SOIL SOIL REFRACTORIES SLAG TRANSPORTING TREATMENT OF NATURAL STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To recycle waste gypsum of environmental pollution waste as concrete aggregate by adding 1-2% binder into a pulverized material of the harmful waste gypsum to give strength as same as that of the conventional sand-cement based concrete, to make the amount of eluted fluorine harmless, to be made lightweight from 2.3 to 1.8 in the specific gravity to recycle the waste gypsum material as a building material and to make the waste gypsum pollution-free. SOLUTION: The waste gypsum is used as the cement aggregate by surface-treating the waste gypsum which is porous and from which fluorine is eluted with PVAC. COPYRIGHT: (C)2011,JPO&INPIT