Abstract

The present invention relates to a high-performance wet-type shotcrete composition and to a method for constructing a scenic structure using same. More particularly, the present invention relates to a method for constructing a scenic structure having good strength and durability using a wet-type shotcrete composition having high constructability, high strength, and high durability, whereby pumpability is improved due to the presence of a superabundant amount of air before the placement of shotcrete, and whereby shootability is improved due to the presence of a small amount of air after the placement of the shotcrete using the high-performance wet-type shotcrete composition containing silica fumes and an AE agent, wherein the scenic structure provides an excellent scenic view when implemented as a landscape sculpture and due to the natural rock coloring thereof. To this end, the wet-type shotcrete composition comprises 80-85 vol % of the aforementioned shotcrete and 15-20 vol % of air, wherein the aforementioned shotcrete comprises 18-28 wt % of coarse aggregate, 40-50 wt % of fine aggregate, 12-22 wt % of cement, 3-13 wt % of water, 1.4-2.4 wt % of silica fumes, 1.6-2.6 wt % of an expansion agent, 0.01-0.1 wt % of a superplasticizer, and 0.0001-0.01 wt % of an AE agent relative to 100 wt % of the aforementioned shotcrete, and the content of the AE agent is 0.0027-0.005 parts by weight based on 100 parts by weight of the cement.

IPC Classes  ?

• C04B 18/06 - Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
• E02D 17/20 - Securing of slopes or inclines
• E01C 7/16 - Prestressed concrete paving

Abstract

The present invention relates to a method for constructing a bobsleigh course using a high-performance wet-type shotcrete composition, and more particularly, to a method of constructing a bobsleigh course that uses a high-performance wet-type shotcrete composition which includes silica fumes and AE material, and which has increased pumpability prior to being deposited due to the presence of a superabundant amount of air, and increased shootability after being deposited since the amount of air present is decreased, thus imparting high constructability, high strength, and high durability to the composition. To this end, the method comprises: a framework-forming step of fixing a wire-mesh formwork, positioning a cooling pipe, strengthening adherence and holding strength, and installing a curvature-maintaining pipe; a shotcrete-laying step of laying the shotcrete composition; a first surface-finishing step of setting a curved surface and performing finishing using plastering; a second surface-finishing step of performing a rough surface finishing; and a wet curing step of performing wet curing.

IPC Classes  ?

• A63C 19/10 - Ice-skating or roller-skating rinksSlopes or trails for skiing, ski-jumping or tobogganing
• A63B 71/02 - Games or sports accessories not covered in groups for large-room or outdoor sporting games