PORTLAND CEMENT FOR CENTRIFUGAL FORMING, HYDRAULIC COMPOUND AND PRODUCTION OF ITS HARDENED BODY

PURPOSE:To obtain a high-strength hardened body capable of securing good operability and working time even in an extremely low water/binder ratio without using a high-strength admixture by specifying the hydraulic modulus, Blaine specific surface and residual oversize. CONSTITUTION:80 pts.wt. of a b...

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Hauptverfasser:	UCHIDA SHUNICHIRO, MATSUURA SHIGERU, HASHIMOTO SEIICHI, OKAMURA RYUKICHI
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE LIME, MAGNESIA METALLURGY PERFORMING OPERATIONS REFRACTORIES SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SLAG TRANSPORTING TREATMENT OF NATURAL STONE WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	PURPOSE:To obtain a high-strength hardened body capable of securing good operability and working time even in an extremely low water/binder ratio without using a high-strength admixture by specifying the hydraulic modulus, Blaine specific surface and residual oversize. CONSTITUTION:80 pts.wt. of a binder as the normal, high-early-strength portland cement having >=2.20 hydraulic modulus and 4000m /g Blaine specific surface and contg. 15-25wt.% residue on 30mum oversize by an air-jet screen, the normal aggregate such as sand and ballast, an aggregate contg. a fine aggregate as the globular aggregate and with the 0.15mm undersize controlled to =0.20, 0.1-10wt.%, based on 100 pts.wt. of binder, high-performance water reducing agent as the polycarboxylic compd. having 500-50,000 average mol.wt. and