JPS63147002A - 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] [A field of application] 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, 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 crusher runs (cut stones), but the roadbed may also be formed using construction 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. If you want to continue tiling after laying the leveling mortar, pour cement paste (cement mixed with water) onto the leveling mortar and fold the tiles 6 from above. Let's do it. 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 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. there were.

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] In the present invention, semi-rigid pavement is applied to asphalt concrete, and tiles are laid on the 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. Furthermore, since the semi-rigid pavement layer and the mortar are compatible with each other relatively well, the reliability of the tile installation is increased.

[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 the method of this embodiment, a roadbed 2 is formed on a roadbed 1 by a crusher run, a medium-grained asphalt concrete 7 is placed on top of the roadbed 2, and semi-rigid pavement is applied on top of it. As is well known, semi-rigid pavement is a pavement in which a special infiltration paste characterized by cement is dispersed and infiltrated into the interstices of the surface aggregate of medium-grained asphalt concrete. Reference numeral 7a in FIG. 1 indicates the lower layer which is not penetrated by the paste, and 7b indicates the layer of semi-rigid pavement which is penetrated by the paste. Then, a surface-treated mortar 8 is laid on this semi-rigid pavement layer 7b, and the tiles 6 are pasted through the mortar 5.
Attach. 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 carried out based on this design, and asphalt concrete (hereinafter sometimes referred to as Ascon) is used as medium-grained Asphalt concrete.

An example of the blending of the particle-sized ascon is shown below.

Table 1 During this period, semi-rigid pavement is applied to the granular ascon.
The penetrating cement paste used for this semi-rigid pavement is
Preferably, the material is mainly composed of cement and fly ash or pozzolan, and is mixed with special additives such as resin emulsion or rubber latex. Silica powder may be used instead of fly ash or pozzolan. Furthermore, silica sand may be used if necessary. To perform semi-rigid pavement, for example, it is performed as follows. That is, after paving the medium-grained ascon, and after the pavement has cooled down, a paste prepared in advance is spread, spread with a rubber rake, and rolled with a vibrating roller of about 1.0 mm. The amount of spraying paste for penetration depends on the depth of penetration, but is generally 4 to 611/d. In the illustrated embodiment, the paste is semi-penetrated, but the paste may be fully penetrated throughout the entire thickness of the medium-grained ascon. In the case of total penetration, the particle size of the intermediate-grained ascon should be made coarser than in the case of semi-penetration.

The surface of this semi-rigid pavement layer is treated with polymer-containing cement mortar. Cement mortar with polymer is
Preferably used 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, E
Examples include VA emulsion type and SBR latex type. Such polymer-containing cement mortar is characterized by good compatibility with semi-rigid pavement. This polymer-containing cement mortar is used as a semi-rigid pavement layer 7b.
Brush, spray or trowel are suitable for top application. However, when using a brush, it is better to use a softer mortar than using a trowel.

After applying the polymer-containing cement mortar, 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. If the mortar is easily dried, it is preferable to mix an appropriate amount of a methyl cellulose-based water retaining agent into the mortar. Polymer dispersions may be used in place of water.

In the above embodiment, a mortar 5 is used to form a tile 6 in a bow length by using a mortar 5 having a thickness of about 3 to 5 mm, for example, on a surface-treated mortar 8 having a thickness of about 1 to 2 mm. ,
The surface treatment mortar 8 may be applied thickly and the tiles 6 may be directly attached. 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 it is possible for the cement mortar to penetrate into the surface of the semi-rigid pavement layer and provide sufficient adhesive strength, a mortar that does not contain a polymer may be used. It is also possible to install tiles on semi-rigid paving surfaces with a chisel.

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, by pouring ascon,
After applying semi-rigid paving with paste on top of it, tiling can be carried out after two days. In addition, according to the present invention, the mortar is provided on a semi-rigid layer that has relatively good compatibility with the mortar, so the bonding strength between the mortar layer and the semi-rigid pavement layer is high, and the tile The reliability of pasting is also excellent.

In addition, when performing semi-rigid pavement as in the present invention, if it is designed to have the same strength, the unit cost of semi-rigid pavement is considerably lower than that of cement concrete, and the construction cost is also 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 Figure 3 Figure 4

Claims (2)

[Claims] (1) A tile construction method characterized by applying semi-rigid paving to asphalt concrete and laying tiles on top of the asphalt concrete with cement mortar. (2) The method according to claim 1, wherein the cement mortar is a polymer-containing cement mortar.