KR0185362B1 - Method of manufacturing non-slip built-in type terrazzo step - Google Patents

Abstract

The present invention relates to a method for manufacturing a non-slip integrated terrazzo staircase member used to construct a staircase such as a building by a prefabricated method.

In the method of manufacturing the terrazzo step member of the present invention, when forming the scaffolding portion of the terrazzo staircase in which the non-slip is integrally formed by using different hardness stones, the non-slip part is formed with a raw material mixture containing high hardness microstone and low hardness. When the scaffold is formed from a raw material mixture containing marble stones, a stepped member of a plate shape is formed, and the surface of the non-slip using high hardened stones is roughened when the surface is polished through curing. The surface of the scaffold used is technical in that a high gloss smooth glossy surface is maintained.

Non-slip integrated terrazzo stairs manufactured by the method of the present invention has the advantage that the construction work is easy and the construction period is shortened because it does not require a separate process for forming the non-slip during the construction of prefabricated stairs using the same.

Description

Manufacturing method of non-slip one-piece Tarajo stairs

1A and 1B are front and side views showing a state in which a straining wire is installed on a bed as an initial process in the method of the present invention.

Figure 2 is a side cross-sectional view showing the process of forming each layer of the terrazzo stair member in the method of the present invention.

3a to 3e is a manufacturing process diagram showing the step of terrazzo step forming process of the present invention.

4 is a perspective view of a terrazzo stair member produced by the method of the present invention.

* Explanation of symbols for main parts of the drawings

2: Bed 3: Stretching Wire

4: lower layer 5: upper layer

5a: stepped part 6: non-slip part

7: forming cart

The present invention relates to a staircase member used to construct a staircase of a building or a construction by a prefabricated method. More specifically, a terrazzo staircase of a terrazzo staircase having a stress wire embedded therein to improve strength characteristics and constitute a tread. It relates to a continuous production method of terrazzo stairs, in which non-slips are integrally formed on one edge.

In general, in constructing a staircase such as a building, a formwork is made in a step installation part, and concrete is cast directly on the site to form a skeleton of the staircase, and then a separate stair molding material is attached thereon and water on the surface thereof is formed. The stair construction method of the grind work is performed widely.

However, in recent years, as the site casting method using the formwork requires a lot of manpower and materials and has a problem of increasing the construction period, a new type of stair construction method is a stair member used for stair construction in a factory or a site. The precast concrete stair construction method is known to reduce the manpower required for stair construction and to shorten the construction period by assembling these stair members to pre-molded frameworks. An example is Korean Patent Application No. 96-12870, filed by the inventor.

The prefabricated staircase construction method of the present invention pre- filed by the present inventors is connected to the space between the upper and lower floors of the stair installation part inclinedly connected to the slab member, and then the terrazzo stair member that is preformed on the surface of the inclined slab. As a method of completing the stair construction by attaching sequentially, the step member used in this case is a prefabricated terrazzo method obtained by the manufacturing method shown in Patent Application No. 96-12869, which is also pre- filed by the present inventor. It will be preferred that the staircase member.

On the other hand, a stair of a building or the like is formed with a non-slip mainly made of metal or synthetic resin on the outer edge of the upper surface of the stairs to prevent slipping of the pedestrians climbing up and down the stairs.

Such conventional non-slip metal or synthetic resin material has a form in which it is attached using an adhesive such as mortar when the concrete construction of the stairs is completed, and it is cumbersome in the work process, and also the physical properties between these non-slip and concrete stairs materials There is a disadvantage that the non-slip is separated from the stairs over time due to the difference.

In addition, since the conventional non-slip is mainly attached in the form of a pad on the upper surface of the stairs, a stepped portion exists between the non-slip and the upper surface of the stairs, and there is a fear of the occurrence of a safety accident in which a pedestrian falls over the stepped portion when walking the stairs. have. As a way to solve the problem caused by the height difference between the upper surface of the staircase and the non-slip, the concrete surface of the non-slip forming part is scraped off during the construction of the staircase, and the non-slip member is attached to the place so that the surface of the step is kept flat or not attached to the non-slip. It is known to form a non-slip function by forming a plurality of parallel grooves along its longitudinal direction outside the upper surface of the stairs, but in the conventional planar non-slip structure, the former is referred to as recess formation for the non-slip attachment portion. In addition, the construction process is complicated by additional processes, and in the latter case, it is difficult to expect a substantial non-slip effect, and in order to maintain aesthetically clean condition as dust or foreign matter penetrates into the recess, There is inconvenience.

In addition, there is a method of attaching the sandpaper-type non-slip tape to the upper surface of the staircase as one of the conventional non-slip type, which also has a problem of being peeled off or easily damaged from the stair member with time.

Accordingly, the present invention avoids a method of bonding a step member and a separate non-slip member having different physical properties in consideration of all the problems which are pointed out in the conventional non-slip in manufacturing the step member used in the step construction by the prefabricated method. In the step of forming the stair member, the non-slip part having the same physical properties as the stair member is integrally formed so that the non-slip integral terrazzo step manufacturing method is excluded to eliminate the need to perform a separate process for the formation of the non-slip during the construction of the prefabricated staircase. The purpose is to provide.

It is another object of the present invention to continuously manufacture a scaffold member of a prefabricated terrazzo step for a prefabricated method having a non-slip portion having a reinforced surface reinforced with strength by embedding a stress wire at each end thereof by a consistent process. To provide a method of manufacturing a non-slip one-piece terrazzo stairs.

The object of the present invention is to install a staircase wire on the bed equipped with a heating device, and then sequentially cast the raw material mixture for forming the stair member, thereby forming a staircase body in which the stress wire is embedded therein and the staircase. The non-slip part molding raw material mixture is poured into a portion corresponding to the upper edge side of the main body forming part so that the non-slip part is molded integrally, and after curing the step member molded body through the heating device provided in the bed, the non-slip in the surface of the molded body It is achieved by a series of processes in which roughness is shown on the negative surface, and polishing is performed on the upper surface except for the non-slip portion to have a smooth polished surface of high roughness.

Details of the above object, manufacturing process and effect of the present invention will be clearly understood by the following detailed description with reference to the drawings showing preferred embodiments of the present invention.

First, (a) and (b) of FIG. 1 are front and side views of a state in which a stress wire is mounted on a bed of the present invention, and a bed 2 having a plurality of steam pipes 1 embedded therein as shown in FIG. A plurality of stressing wires 3 are mounted on top of the rods in a state in which proper tension is maintained.

At this time, it is preferable that a piano steel wire having a diameter of about 3-6 mm is used as the stressing wire 3.

Next, after the installation of the stressing wire 3 on the bed 2 is completed, as shown in FIGS. 2 and 3, the raw material mixture for forming the stair member is cast on the bed 2 to form the stair member. To be done, look at the step-by-step process in detail as follows.

As shown, the staircase molded body B, which is to be poured onto the bed 2, has the same width and length as the lower layer 4 above the lower layer 4 on the flat plate, but the stepped recess 5a is formed at the upper one side corner. The upper layer 5 is laminated, and has a structure in which a non-slip portion 6 is formed on one end of the upper and lower layers 5 and 4 including the stepped recesses 5a of the upper layer 5.

The shaping of the lower layer 4 and the upper layer 5 and the non-slip portion 6 constituting the stair molded body B is performed by the length of the bed 2 on which the stretching wire 3 is mounted, as shown in FIG. It is carried out by casting each raw material mixture thereon while molding the conveying trolley 7 which is conveyed along the direction and molding it into a mold.

That is, the molding cart 7 is equipped with two hoppers 7a and 7b and one hopper (not shown) on one side before and after each of the raw material mixtures 8a and 8b is charged in these hoppers. By transporting the molding cart 7, the raw material mixture 8a for forming the upper layer, the raw material mixture 8b for forming the lower layer and the raw material mixture for forming the non-slip part (not shown) are poured onto the bed 2. On the bed (2) passed by) is formed of the step molding (B) continuously.

On the other hand, unlike the hopper structure of the molding cart 7 shown in FIG. 2, only one hopper is mounted on the molding cart, and the raw material mixture charged therein is changed so that the bed 2 is transported a plurality of times. The step molded body B may be molded.

The lower layer raw material mixture is composed of 20-30% gray cement and a low slump mixed by adding water to the remaining 70-80% crushed stone, and the upper layer raw material mixture is 15-25% white cement, 15- It is composed of a slightly higher slump than the raw material mixture for forming the lower layer, which is mixed by adding water to a composition consisting of 25% stone powder, 40-70% marble chips and a small amount of color pigments.

At this time, the marble chip as the low hardness of the raw material mixture for forming the upper layer is preferably in the particle size range of 1-20mm, color pigments at that time may be used to select a pigment of various colors.

In addition, the raw material mixture for forming the non-slip part is made by mixing water with a composition containing 30-70% high hardness stone, 20-30% back cement, and a small amount of color pigment, wherein the high hardness stone is 0.5 Garnet having a high hardness of -3 mm particle size is preferred.

The raw material mixture poured from each hopper of the forming trolley 7 passing on the bed 2 into the bed 2 is formed into a step molded body B having a shape as shown in Fig. 3 (c). The upper surface of the non-slip portion 6 is formed lower than the upper surface of the upper layer 6, but the height deviation is preferably about 2-3 mm.

And, the edge of the non-slip portion 6 is preferably molded to form an arcuate curved surface as shown.

Thus, when the shaping | molding of the step molding B on the bed 2 is completed by advancing movement of the shaping | molding cart 7, the curing operation as a next process is performed.

In the curing process, the steam passes through the steam pipe 1 embedded in the bed 2 on which the step molding B is placed, and the bed 2 is heated to 50-60 ° C., 18-24. By keeping time.

The cured staircase (B) is cut to meet a predetermined standard and then polished and polished to the surface by using an automatic high speed polishing machine (9) as shown in FIG.

At this time, the polishing depth for the upper layer is performed up to about 3-4 mm, and in this process, the polishing is performed even on the surface of the non-slip portion 6, but as described above, the non-slip portion 6 has high hardness in its composition. As the microstones are included, the surface state after polishing is generally flat, so that the surface of the non-slip portion 6 maintains a relatively rough surface, and the scaffolding portion using other low hardness marble stones It is left with a polished smooth surface.

When the polishing and polishing work is completed in this way, a non-slip integrated terrazzo step for prefabricated construction according to the present invention as shown in FIGS. 3E and 4 is obtained.

The size of the terrazzo stair member manufactured by the method of the present invention is preferably formed in a range of approximately 250-360 mm in width, 30-50 mm in thickness, and 20-60 mm in width of the non-slip part. The length is cut to maintain the length corresponding to the width of the stair installation.

The non-slip integral terrazzo shear member manufactured by the method according to the present invention is composed of prestressed concrete embedded with a piano wire as a stressing wire therein, so that the strength and flexural strength of the same thickness stone and general terrazzo stairs It is excellent in showing high resistance to load and vibration.

In addition, the terrazzo step member of the present invention has a non-slip having essentially the same physical properties as the stair member body is integrally formed in the stair member body, so that the conventional non-slip member made of metal or synthetic resin material is bonded to the upper surface of the concrete stairs. In comparison, the construction is simple and the construction cost of the stairs can be reduced, and there is no stepped portion on the upper surface, thus eliminating the risk of safety accidents, and there is no fear of separation or peeling of the non-slip member.

In the case of the terrazzo staircase member manufactured by the method of the present invention, the color of the terrazzo staircase member can be variously changed by appropriately selecting and adding a color pigment to the raw material mixture constituting the non-slip portion and the upper layer. It also has the effect of further elevating the dignity.

Claims (3)

A raw material mixture consisting of gray cement and crushed stone is poured on a bed to form a plate-shaped lower layer, and a raw material mixture consisting of back cement, stone powder, low hardness stone and color pigments is successively poured on the plate to have a stepped recess on one side thereof. The upper and lower layers and the non-slip portion are formed by forming a non-slip part by laminating and molding the lower layer of the non-slip part by pouring a raw material mixture composed of high hardness microstone, back cement and color pigment into the upper and lower side wall portions including the upper surface of the stepped portion. The non-slip one-piece terrazzo, characterized by forming an integrally formed staircase and polishing the upper surface of the cured staircase to form a rough rough surface on the non-slip portion and a smooth surface of high roughness on the upper layer. Manufacturing method of stairs. The non-slip of claim 1, wherein a plurality of piano wires are mounted in a tension state on the bed before placing the raw material mixture of the step molded body on the bed so that the piano wires are embedded therein when the step molded body is formed. Manufacturing method of integrated terrazzo stairs. The non-slip integrated terrazzo step according to claim 1, wherein the surface of the non-slip formed on the stepped recess of the upper layer is lower than the surface of the upper layer, and the polishing depth is carried out to the surface of the non-slip during polishing. Manufacturing method.