IN-PLACE LINING PROCESS

PURPOSE:To provide the in-place lining process of tunnel and especially the in-place lining process by which a coating concrete is placed along with propulsion. CONSTITUTION:A concrete contg. the cement composition consisting of 100 pts.wt. of the cement contg. >=60wt.% 3CaO-SiO2, 1-5 pts.wt. of...

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Bibliographische Detailangaben
Hauptverfasser:	MORIOKA MINORU, NIKAIDO YASUYUKI, MIHARA TOSHIO
Format:	Patent
Sprache:	eng
Schlagworte:	ARTIFICIAL STONE BUILDING BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE CEMENTS CERAMICS CHEMISTRY COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS CONCRETE EARTH DRILLING FIXED CONSTRUCTIONS FORMS GALLERIES HANDLING BUILDING MATERIALS ON THE SITE LARGE UNDERGROUND CHAMBERS LIME, MAGNESIA METALLURGY MINING REFRACTORIES REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS SCAFFOLDING SHAFTS SHUTTERING SLAG TREATMENT OF NATURAL STONE TUNNELS
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Beschreibung
Zusammenfassung:	PURPOSE:To provide the in-place lining process of tunnel and especially the in-place lining process by which a coating concrete is placed along with propulsion. CONSTITUTION:A concrete contg. the cement composition consisting of 100 pts.wt. of the cement contg. >=60wt.% 3CaO-SiO2, 1-5 pts.wt. of anhdrous gypsum, 0.2-3 pts.wt. of aluminum sulfate, expressed in terms of the anhydride, 0.1-0.8 pts.wt. of an alkali metal aluminate and a water reducing agent is placed. The concrete is pressed, cured and then jointed by moving the formwork. As a result, a concrete with the strength developed in the initial stage and capable of excellently maintaining fluidity is obtained, and an efficient in-place lining is effectively conducted.