PRODUCTION OF CORROSION RESISTANT HUME PIPE

PROBLEM TO BE SOLVED: To produce Hume pipes resistant to concrete corrosion by sulfur oxidizing bacteria. SOLUTION: A corrosion resisting agent 1.2-2.5 in specific gravity which has growth inhibiting effects on sulfur oxidizing bacteria, especially one consisting of a phthalocyanine compound, is add...

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Bibliographische Detailangaben
Hauptverfasser:	UCHIDA HIROMI, TAMANO MICHIKO, ENOKIDA TOSHIO
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BLASTING CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING HETEROCYCLIC COMPOUNDS JOINTS OR FITTINGS FOR PIPES LIGHTING LIME, MAGNESIA MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING METALLURGY ORGANIC CHEMISTRY PERFORMING OPERATIONS PIPES REFRACTORIES SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG, OR MIXTURESCONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER SLAG SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL TRANSPORTING TREATMENT OF NATURAL STONE WEAPONS WORKING CEMENT, CLAY, OR STONE
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To produce Hume pipes resistant to concrete corrosion by sulfur oxidizing bacteria. SOLUTION: A corrosion resisting agent 1.2-2.5 in specific gravity which has growth inhibiting effects on sulfur oxidizing bacteria, especially one consisting of a phthalocyanine compound, is added into concrete, and the mixture is mold by centrifugal casting to produce a corrosion resistant Hume pipe. A Hume pipe in which the corrosion resisting agent is concentrated in the inner surface layer can be prepared easily by this method. In this way, sewerage system pipes can be kept sound efficiently over a long period.