JPH0355601B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a tile construction method for tile pavement, and particularly to a method for tiling on asphalt concrete or semi-rigid pavement.

[Conventional technology] Tile paving (paving method using tiles as a finish)
The most common conventional method is shown in FIG. In Figure 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, a leveling mortar 4 is laid, and tiles 6 are pasted thereon through a pasting mortar 5. The roadbed refers to the area of soil approximately 1m thick below the pavement; in the case of an embankment, it is approximately 1m below the finished surface of the embankment, and in the cut area, it is approximately 1m 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, this roadbed must have sufficient bearing capacity and must be made of a durable material well-laid to the required thickness. Conventionally, this roadbed is made using cracked stones, but the roadbed may also be formed using methods such as cement stabilization or bituminous stabilization.

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. In addition, as shown in the figure, the pasting mortar 5
This method of tiling is used when tiling is carried out the day after the leveling mortar 4 has been laid, and the mortar used is a mixture of cement and sand with a methyl cellulose-based water retention agent. There is. 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 cross-sectional view explaining different conventional construction methods, in which tiles 6 are placed on cement concrete 3.
are directly pasted through the pasting mortar 5. 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 tiles are laid on top of it using mortar, but this cement concrete does not absorb water. It takes a considerable amount of time to react and harden to achieve 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 the conventional method of construction, which requires a long curing time as described above, is inconvenient. It was hot.

The construction method shown in Figure 4 is shorter than the construction method shown 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 construction method is shorter than that in Figure 3. Compared to paving methods using king blocks and paving methods using colored asphalt, this method is inferior in terms of construction time.

Furthermore, since cement materials undergo shrinkage during the hardening stage, if a sufficient curing period is not allowed, there is a risk of damage such as peeling of the tiles. Furthermore, the British Standard states that 4 weeks are required for curing the concrete floor surface, and if a mortar base (when laying a leveling mortar) is to be prepared, tiles cannot be laid until another 4 weeks have elapsed. Become.

[Means for Solving the Problems] The present invention involves laying a unit tile on an asphalt concrete or semi-rigid pavement surface, and fixing the base material of the unit tile to the asphalt concrete or semi-rigid pavement surface with nails or pins. This is how it was done. In addition to single-needle pins, various types of pins such as U-shaped pins and anchor pins can be used.

[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 or semi-rigid pavement surface is distributed by the tiles, making it possible to protect the asphalt concrete or semi-rigid pavement surface.

[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 spread on the asphalt concrete 7,
Place mortar 5 on top of it. Furthermore, a unit tile 11 is laid on top of it, and the base material 11a of the unit tile 11 is fixed to the asphalt concrete 7 with nails 12. Reference numeral 11b indicates a unit tile.

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

Asphalt pavement is performed based on this design, and asphalt concrete (hereinafter referred to as
There is something called Ascon. ), various types of ascon, such as open-grain ascon, coarse-grain ascon, and dense-grain ascon, can be used. Furthermore, since coarse-grained ascon and open-grained ascon have good compatibility with cement mortar, it is desirable to use these coarse-grained or open-grained ascon as the ascon. Also,
As in the illustrated embodiment, it is also suitable to divide the ascon into two layers, with the lower side 7a being a dense-grain ascon and the upper side 7b being a coarse-grain or open-grain ascon.

This asphalt paving is carried out by heating and softening the asphalt, but after paving, the heated asphalt is waited for to return to room temperature before surface treatment 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, EVA emulsion, and SBR latex. 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 the polymer-containing cement mortar is applied on the ascon 7, the sticking mortar 5 is applied on the surface-treated mortar 8, and then the surface is made flat. In this case, a suitable mortar 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, when drying is easy, it is suitable to mix an appropriate amount of methylcellulose-based water retention agent into the pasting mortar. Polymer dispersions may be used in place of water.

Thereafter, a unit tile 11 is laid on the mortar 8, and nails 12 are driven into the base material 11a so that the nails 12 reach the ascon 7 to fix the unit tile 11 to the ascon 7.

As the unit tile 11, a tile is attached to a base material, and various types of tiles can be used without particular limitation as long as this base material can be nailed or pinned. As an example of the most suitable unit tile 11,
One example is the one proposed in No. 42985.
The unit tile according to this project uses a non-woven fabric made of corrosion-resistant fiber as a base material, which is impregnated with cement base or the like containing rubber latex or synthetic resin emulsion as needed, and the tile is adhered to this. It is a combination of many tiles.

After nailing or pinning, the joints of the tiles 6 are filled with a suitable joint material 13, such as a cement-based joint material, to complete the construction.

In the present invention, ascon 7 is an open ascon,
Semi-rigid paving may be performed by infiltrating this with cement base, and then unit tiles may be laid through surface treatment mortar and pasting mortar. The cement paste for penetration used in this semi-rigid pavement is mainly composed of cement and fly ash or pozzolan, and is preferably mixed with special additives such as resin emulsion or rubber latex, and silica is used instead of fly ash or pozzolan. Powder may also be used. Furthermore, silica sand may be used if necessary. The semi-rigid pavement may be either a semi-permeable pavement or a fully permeable pavement.

FIG. 5 is a sectional view showing another embodiment of the present invention, in which a narrow band member 14 is placed over the peripheral edge of the base material 11a of the unit tile 11.
An example is shown in which the material is nailed or pinned. Note that after nailing or pinning, the narrow strip member is used as a joint material 13.
Preferably, it is coated with Other configurations are in the second
Since it is similar to the figure, the same or corresponding parts are given the same reference numerals and the explanation thereof will be omitted.

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 in open-grained ascon, tiles can be laid on existing ascon with high tensile strength.

Furthermore, according to the present invention, tiles can be laid by scraping off the existing asphalt pavement surface 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, but the surface treatment mortar 8 is applied thickly. Alternatively, the tiles 6 may be attached directly. In addition, when using mortar for tiling, it is preferable to allow the surface-treated mortar to harden to some extent before tiling.

In the above examples, surface-treated mortar containing polymer is used, but if cement mortar can penetrate into the surface and provide sufficient adhesive strength, such as open-grained ascon or coarse-grained ascon, It is also possible to tile on ascon with only mortar without polymers. Moreover, an organic adhesive such as gypsum may be used instead of polymer-containing mortar or ordinary mortar. Furthermore, if the top surface of asphalt concrete or semi-rigid pavement is finished extremely flat, it may be nailed or pinned without using the mortar described above.

Furthermore, although the above embodiments relate to tiling on asphalt or semi-rigid pavement formed on a subgrade, the present invention is applicable to floor surfaces finished with other asphalt or semi-rigid pavement (for example, roof tops). It can also be applied to tiling on pedestrian bridges, pedestrian bridges, pedestrian decks, etc.).

[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, it is possible to tile the asphalt or semi-rigid pavement the next day after pouring the asphalt.) In addition, when tiling is carried out on asphalt or semi-rigid pavement according to the present invention, it is possible to perform tiling on asphalt or semi-rigid pavement. The effect is that the applied load is distributed across the tiles, the amount of deflection of the asphalt or semi-rigid pavement layer is reduced, the yield strength of the asphalt or semi-rigid pavement layer is improved, and its life is extended. Furthermore, even if the tile expands due to heat, the asphalt underlying it expands and contracts following the expansion of the tile, so the asphalt does not restrict the tile and there is no risk of the tile peeling or cracking.

In addition, when asconcrete or semi-rigid pavement is used as in the present invention, if it is designed to have the same strength, the unit cost of ascon and semi-rigid pavement is considerably lower than that of cement concrete, and the construction cost is also significantly lower. Reduced.

[Brief explanation of drawings]

Figure 1 is a sectional view explaining the method of the present invention, Figure 2 is an enlarged view of the same essential parts, Figures 3 and 4 are sectional views explaining the conventional method, and Figure 5 is a different method of the present invention. FIG. 1... Roadbed, 2... Roadbed, 3... Cement concrete, 4... Leveling mortar, 5... Pasting mortar, 6... Tile, 7... Asphalt concrete, 8... Surface treatment mortar, 11... …
Unit tile, 12...nail.

Claims (1)

[Claims] 1. A unit tile consisting of a plurality of tiles adhered to a base material is laid on an asphalt concrete or semi-rigid pavement surface, and the base material of this unit tile is attached with nails or pins to the asphalt concrete or A method of installing tiles characterized by fixing them to semi-rigid paved surfaces. 2. The method according to claim 1, characterized in that the unit tiles are laid on the asphalt concrete or semi-rigid pavement surface via cement mortar.