JPH041825B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a method of finishing concrete stairs for buildings.

Conventional technology Conventionally, to finish concrete stairs, the raised part was finished with mortar, and then the mortar was left to harden for a day, and then the primer-treated treads were finished with mortar using a trowel. .

Problems to be Solved by the Invention In the above-mentioned conventional technology, the raised part is finished with mortar using a trowel, so it takes a long time to finish, and the mortar on the tread surface is left for one day to finish. It takes two to three days to finish one floor due to trowel finishing and difficult work surfaces such as transporting materials.Furthermore, the hardening of the mortar may be delayed depending on the temperature, and it is difficult to move the materials. It was necessary to cure the corners of the surface until they were strong enough to withstand walking. Additionally, since the mortar was applied using a trowel, highly skilled techniques were required to achieve a precise finish.

Means for Solving the Problems The means of the present invention for solving the above-mentioned problems is to paste a ready-made decorative board to the raised part of a concrete staircase in a lump with mortar containing quick-setting material, and after it hardens, the tread surface becomes and a finishing method for stairs in which a cement-based self-leveling material is poured between the riser and the prefabricated decorative board.

Embodiments Examples of the present invention will be described with reference to the drawings.

In Figures 1 and 2, in order to finish the stairs 1 with concrete still in place, first, a ready-made decorative board (noncombustible material) 3 such as a flexible board or concrete molded board is placed on the riser 2 to a thickness of 10 mm to 15 mm. Paste the dumplings at intervals using mortar 4 containing a quick-setting material (sodium silicate, calcium chloride, etc.). At this time, the upper end 5 of the ready-made decorative board 3 is made to be about 10 mm higher than the tread surface 6 and equal to the finished height of the tread surface 6. Immediately after the dumpling-attached mortar 4 hardens, a cement-based self-leveling material 7 (trade name: Lion High Flow, manufactured by Osaka Cement Co., Ltd., etc.) is poured onto the tread surface 6. After the cement-based self-leveling material 7 flows from the tread surface 6 into the space between the ready-made decorative board 3 and the riser 2, it is filled so as to be at the same level as the upper end 5 of the ready-made decorative board 3. In this way, the work is completed by sequentially constructing from the top tier to the bottom tier.

In Fig. 3, a ready-made decorative board 3 with a non-slip 8 adhered to the upper end 5 is pasted to the raised part 2 with mortar 4 containing quick-setting material, and immediately after the mortar 4 hardens, a cement-based self-leveling material 7 is applied to the tread surface 6 and It is finished by pouring between the riser 2 and the ready-made decorative board 3.

Effects of the Invention Conventionally, it took 4 to 5 days to complete a staircase for two floors because the mortar finish was applied with a trowel, but this invention uses the above-mentioned means, so it is easy to paste ready-made decorative boards with dumplings. Unlike finishing with a trowel, pasting the dumplings can be done quickly without requiring any skill, and it can be done easily and quickly since the cement-based self-leveling material is poured immediately afterwards. It can be completed in a day, reducing the construction period by more than half.

Furthermore, since the riser is a ready-made decorative board, the surface accuracy is high, and the treads are finished with high horizontal accuracy using a cement-based self-leveling material, making it possible to provide high-quality stairs in a short construction period and at a low price.

[Brief explanation of drawings]

The drawings show embodiments of the invention.
The figure is a longitudinal side view, FIG. 2 is a perspective view, and FIG. 3 is a longitudinal side view showing another embodiment. 1...Concrete stairs, 2...Rise, 3
... ready-made decorative board, 4 ... mortar, 5 ... upper end,
6...Tread surface, 7...Cement self-leveling material, 8...Non-slip.

Claims (1)

[Scope of Claims] 1. Ready-made decorative board 3 is pasted in dumplings with mortar 4 containing quick-setting material on the raised 2 parts of concrete staircase 1,
This is a staircase finishing method in which cement-based self-leveling material 7 is poured between the treads 6 and risers 2 and ready-made decorative boards 3 after hardening. 2. The finishing method for stairs according to claim 1, in which a non-slip 8 is adhered to the upper end 5 of the ready-made decorative board 3.