JPS63147001A - Execution of tile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a tile construction method for tile paving,
In particular, it relates to a method of tiling on asphalt concrete.

[Prior Art] The most common conventional method of tile paving (a paving method using tiles as a finishing material) is shown in FIG. In FIG. 3, in order to perform tile paving, a roadbed 2 is prepared on a roadbed 1, and cement concrete 3 is poured to create a structure that can withstand traffic loads and the like. Then, spread the leveling mortar 4,
Tiles 6 are pasted thereon through mortar 5. The roadbed refers to the area of soil approximately 1 m thick below the pavement; in the case of an embankment, it is approximately 1 m below the finished surface of the embankment, and in the cut section, it is approximately 1 m below the excavated surface.

The roadbed is a part that plays the role of distributing the traffic load and safely transmitting it to the roadbed. Therefore, the roadbed must have sufficient bearing capacity and must be made of a durable material well-laid to the required thickness. Conventionally, this roadbed has been formed using Talalasharan (cut stone), but the roadbed may also be formed using methods such as cement stabilization treatment or bituminous stabilization treatment.

Further, the leveling mortar 4 on the cement concrete 3 is formed by spreading cement mortar with a large amount of sand and relatively little moisture. As shown in the figure, the method of tiling using mortar 5 is adopted when tiling is carried out the day after the leveling mortar 4 has been laid. Mortar mixed with a type of water retention agent is used. When tiling is to be carried out after laying down the leveling mortar, cement paste (cement dissolved in water) is poured over the leveling mortar and tiles 6 are driven in from above. In addition, the code|symbol 10 is an expansion joint.

FIG. 4 is a sectional view illustrating a different conventional construction method, in which tiles 6 are directly pasted on cement concrete 3 with mortar 5 interposed therebetween. The construction method shown in FIG. 4 omits the labor of preparing a mortar base (leveling mortar), and as compared to the construction method shown in FIG. 3, the construction period is shortened and costs are also reduced.

[Problems to be solved by the invention] In the conventional tile construction method described above, concrete is poured on the roadbed and mortar is used on top of it to make the tile bows long. It hardens by reacting with water, and it takes a considerable amount of time to reach the required strength. Tile pavement is in high demand in places where it is desired to complete the pavement as quickly as possible, such as shopping streets and station plazas, so conventional methods that require long curing and curing times as described above are It was inconvenient.

The construction method shown in Figure 4 is shorter than the construction method in Figure 3 by omitting the leveling mortar, but in the end, the curing period of the cement concrete layer 3 is required, so the construction period is still longer, and the interlocking Compared to paving methods using blocks or paving methods using colored asphalt, this method is inferior in terms of construction time.

In addition, cement materials shrink during the hardening stage, so
If the curing period is not sufficient, there is a risk of damage such as peeling of the tiles. In addition, curing of concrete floor surface is B.
r1tish 5 standard states that 4 weeks are required, and if a mortar base (when laying leveled mortar) is to be prepared, tiling cannot be completed until another 4 weeks have passed.

[Means for Solving the Problems] According to the present invention, tiles are laid on asphalt concrete using cement mortar.

[Function] In the present invention, it is not necessary to form a concrete base, and the construction period is significantly shortened. In addition, the load applied to the asphalt surface is dispersed by the tiles, making it possible to protect the asphalt concrete.

[Examples] The present invention will be described in more detail below with reference to examples shown in the drawings.

FIG. 1 is a longitudinal sectional view for explaining an embodiment of the method of the present invention, and FIG. 2 is an enlarged sectional view of the main part of FIG.

In this embodiment method, a roadbed 2 is formed on a roadbed 1 by a crusher run, an asphalt concrete 7 is placed on top of the roadbed 2, a surface-treated mortar 8 is laid on the asphalt concrete 7, and the mortar 5 is used for pasting. The tiles 6 are pasted through them. In addition, the code|symbol 9 shows a cement joint.

In the present invention, this cross-sectional configuration is determined based on the paving guidelines based on the expected traffic volume and the bearing capacity of the ground.

Asphalt pavement is performed based on this design, and various types of asphalt concrete (hereinafter referred to as asphalt concrete) can be used, including coarse-grained asphalt, dense-grained asphalt, and non-grained asphalt. In addition, since coarse-grained ascon and open-area ascon have good compatibility with cement mortar, it is desirable to use these coarse-grain or open-ascon as the ascon. It is also preferable to divide the ascon into two layers, as in the illustrated embodiment, with the lower side 7a made of dense-grained ascon and the upper side 7b made of coarse-grained or open-grained ascon.

This asphalt paving is performed by heating and softening the asphalt, but after paving, the heated asphalt is allowed to return to room temperature before being surface treated with polymer-containing cement mortar. The polymer-containing cement mortar is one in which about 0.1 to 3 parts of fine aggregate are mixed with 1 part of cement, and a polymer dispersion is mixed therein to give an appropriate softness. Commonly used polymer dispersions include acrylic emulsion,
Examples include EVA emulsion type and SBR latex type. Such polymer-containing cement mortar is characterized by good compatibility with ascon. A brush, spray or trowel is suitable for applying this polymer-containing cement mortar onto the ascon 7. However, when using a brush, it is better to use a softer mortar than using a trowel.

After applying the polymer-containing cement mortar onto the ascon 7, the mortar 5 is applied onto the surface-treated mortar 8, and the tiles are rolled or hammered into the tiles. In this case, the suitable mortar for pasting is one prepared by mixing about 0.5 to 3 parts of fine aggregate to 1 part of cement and mixing with water. In addition, if it dries easily,
For pasting, it is preferable to mix an appropriate amount of a methyl cellulose-based water retaining agent into the mortar. Polymer dispersions may be used instead of water.

Incidentally, in the above embodiment, tiling is performed on a newly paved ascon, but in the present invention, tiling may be performed on an existing ascon. In particular, when mortar penetration can be expected, such as when a new school is opened,
It is possible to tile with high adhesion strength even on existing ascon.

Furthermore, according to the present invention, tiles can be laid by scraping off the existing asphalt pavement and re-laying only the surface layer with asphalt.

In the above embodiment, the tiles 6 are pasted to a thickness of about 3 to 5 mm, for example, on the surface treatment mortar 8 having a thickness of about 1 to 2 mm, using the mortar 5. You may apply the tiles 6 immediately after painting. In addition, when mortar is used for tiling, it is preferable to tile after the surface-treated mortar has hardened to some extent.

In the above examples, a surface-treated mortar containing a polymer is used, but if the cement mortar can penetrate into the surface and provide sufficient adhesion, such as with open Ascon or coarse-grained Ascon, it is possible to use a polymer. It is also possible to affix tiles on top of ascon with only mortar that does not contain.

Further, although the above embodiment relates to an example in which tiles are laid on an asphalt surface formed on a roadbed, the present invention can be applied to other asphalt-finished floor surfaces (for example, rooftops, pedestrian bridges, pedestrian decks, etc.). It can also be applied to tiling.

[Effects of the Invention] As described above, according to the present invention, tiling can be carried out without forming a cement concrete base, so the period required for hardening of cement concrete can be omitted, and the construction period can be significantly shortened. Tiling can be done at (For example, tiling can be done the day after asphalt pavement is placed.) Furthermore, according to the present invention, tiles are laid on top of asphalt pavement, so the load applied to the asphalt pavement can be reduced. It becomes dispersed in the tiles, reduces the amount of deflection of the asphalt, improves the strength of the asphalt, and extends its lifespan. Furthermore, as a result of various experiments, it has been found that the amount of deflection (measured by Penkelman beam) when a vehicle with a 5-ton wheel load (5-ton truck per wheel) passes by, for example, decreases by about 40%. It was done.

Furthermore, according to the present invention, even if the tile expands due to heat,
Since the underlying asphalt expands and contracts following the expansion of the tile, the asphalt does not restrict the tile and there is no risk of the tile peeling or cracking.

In addition, when constructing an ascon as in the present invention, if it is designed to have the same strength, the unit price of the ascon will be lower than that of cement concrete, and the construction cost will be significantly reduced.

[Brief explanation of the drawing]

FIG. 1 is a sectional view for explaining the method of the present invention, FIG. 2 is an enlarged view of the same essential part, and FIGS. 3 and 4 are sectional views for explaining the conventional method. 1... Roadbed, 2... Roadbed, 3...
Cement concrete, 4... Leveling mortar, 5... Mortar for pasting, 6... Tile, 7... Asphalt concrete, 8... Surface treatment mortar. Patent Applicant: Teru Ina, Representative Director of Inax Co., Ltd. Patent Applicant: Representative Director of Toa Road Industry Co., Ltd.
Sadao Nakayama Patent Attorney Tsuyoshi Shigeno Figure 1 Figure 2

Claims (2)

[Claims] (1) A tile construction method characterized by laying tiles on asphalt concrete using cement mortar. (2) The method according to claim 1, wherein the cement mortar is a polymer-containing cement mortar.