JPH0440509B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a finishing method for concrete stairs in a building.

[Conventional technology]

Many of the external staircases of buildings are made of concrete, and naturally they are constructed by building formwork and pouring concrete.

Figures 3 to 5 show such concrete stairs. In the figures, 1 is a riser, 2 is a tread, and the boundary with the wall 3 is provided with a drainage gutter 4 that is deeper than the tread. A non-slip material 5 made of porcelain tile is buried at the tip of 2.

As an example of construction, such concrete stairs are constructed by pouring concrete for stages, waiting for sufficient hardening, pasting the non-slip material 5 on the treads 2 with mortar, and then finishing the risers 1 and treads 2 with mortar. Ta.

[Problem to be solved by the invention]

In particular, in the case of external stairs, there is a lot of time exposed to wind and rain in addition to direct sunlight, and over time cracks occur in the finished mortar, etc., and the mortar and non-slip material peel off from the underlying concrete surface. Easy to occur.

In addition, after concrete is poured, marking is done,
There are many steps such as applying the base coat, placing the non-slip material, and applying the finishing mortar. Moreover, in addition to the number of days required for finishing, a considerable drying period is required between each finishing process, which lengthens the construction period.

Naturally, the stairs will be closed to traffic during construction, which will restrict the flow of work, and if this continues for a long time, the efficiency of the construction work as a whole will drop significantly.

On the other hand, when a recessed type of decorative mold can be used, there is one in which a non-slip material is attached to the decorative mold so that the non-slip material can be placed together with the mold.

However, since this decorative formwork is a fill-in type, this method cannot be used in the case of stairs constructed using formwork that is completely demolded.

The purpose of the present invention is to eliminate the disadvantages of the conventional example,
To provide a finishing method for concrete stairs, which allows all formwork to be demolded after concrete hardens, allows easy and accurate placement of non-slip materials, and simplifies construction and reduces construction period and cost. It is in.

[Means to solve the problem]

In order to achieve the above-mentioned object, the present invention has the following steps:
Plastering wood with non-slip material pasted on the underside with double-sided adhesive tape was set parallel to the top edge of the formwork, and immersed in the concrete leaving the surface of the non-slip material, and the tread concrete was troweled. The gist of the project is to remove the riser formwork and plastering timbers after the concrete has hardened.

[Effect]

According to the present invention, the non-slip material can be set all at once through the plastering lumber after concrete is poured and before it hardens, and the non-slip material is automatically buried after the concrete hardens.

In this way, finishing of the stairs can begin immediately after concrete is poured, significantly shortening the construction period.

Additionally, the plastering wood on the surface of the non-slip material prevents concrete from adhering to the surface of the non-slip material.

Furthermore, the non-slip material is easily and reliably fixed in a specified position by this plastering board.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a longitudinal sectional side view showing one embodiment of the concrete staircase of the present invention, in which 6 is a plywood riser form, and 7 is a crosspiece for fixing the form 6.

The riser form 6 has its upper end cut to the finished top end of the tread 2, and a tapered notch 8 is provided at the lower end together with the lower crosspiece 7.

Such formwork 6 is combined with side girder formwork and bottom formwork (not shown) to form a framework for pouring concrete for stairs.

FIG. 2 shows the arrangement of the side gutter pad 10, which is a member of the framework.
I added an a. Further, although not shown in the drawings, this hollow board 10 is provided with air vent holes during concrete pouring.

The stair concrete 13 shall be launched from the bottom step to the top step at once, and a temporary cover 9 made of plywood veneer or the like is installed to prevent the concrete from blowing out from the treads 2.
Keep it.

Then, at the stage when the concrete 13 has been poured to the uppermost end, the lower temporary cover 9 is removed.

After doing this, apply 1 layer of double-sided adhesive tape to the bottom surface.
A plastering board 12 to which non-slip material 5 is pasted through 1 is set parallel to the upper end of the riser formwork 6, but at this stage the concrete 13 is in an uncured state and the non-slip material 5 covers the surface. I left behind and immersed myself in concrete 13.

The plastering wood 12 on the surface of the non-slip material 5 has the role of preventing concrete from adhering to the surface of the non-slip material 5 and fixing the non-slip material 5 at a specified position without disturbing it.

At the same time, the tread 2 is pressed down with a metal trowel, and this work can be done using the plastering board 12. When pressing concrete with this trowel, the notch 8 at the lower end of the riser form 6 serves to facilitate the insertion of the trowel. Additionally, the tread 2 is provided with a water gradient as shown by the arrow in Figure 1.

After the concrete 13 hardens, the non-slip material 5 is buried and restrained by the concrete 13, so the plastering lumber 12 is removed leaving it alone, and the riser form 6 is demolded. This formwork 6
The riser 1 formed by this method has an exposed finish.

〔Effect of the invention〕

As described above, the concrete staircase finishing method of the present invention allows the finishing work to begin immediately after concrete is poured, thereby significantly shortening the process and reducing construction costs.

Furthermore, since the finish is not based on the mortar method, a good finish can be obtained without causing peeling of the mortar and non-slip material in the future.

Furthermore, since the non-slip material is placed below the plastering board, the plastering board can prevent concrete from adhering to the surface of the non-slip material, resulting in a clean finish. .

In addition, plastering boards, which are small, non-slip materials that do not take up much space, can be easily and reliably fixed in a specified position.

[Brief explanation of drawings]

Fig. 1 is a longitudinal side view showing one embodiment of the concrete staircase finishing method of the present invention, Fig. 2 is a longitudinal sectional front view of the drainage gutter section, Fig. 3 is a plan view of the concrete staircase, and Fig. 4 is the same as above. The front view and FIG. 5 are perspective views of the same. 1... riser, 2... tread, 3... wall, 4...
Drainage gutter, 5... Non-slip material, 6... Riser formwork, 7... Crosspiece, 8... Notch, 9... Temporary cover, 10... Nusumi board, 10a... Taper, 1
1...Double-sided adhesive tape, 12...Plastering wood, 13
……concrete.

Claims (1)

[Claims] 1 After pouring concrete and while the riser form is being set, set a plastering board with non-slip material affixed to the underside with double-sided adhesive tape parallel to the top edge of the form to cover the surface of the non-slip material. This finishing method for concrete stairs is characterized in that the concrete steps are immersed in the concrete, the concrete treads are pressed down with a metal trowel, and the riser formwork and plastering timber are removed after the concrete has hardened.