JPH0366446B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paving precast used for paving the surface layer of a road, a method for producing the same, and a road formed by laying the precast board.

[Conventional technology]

It is already known that roads paved with cement concrete or asphalt can be repaired by laying large precast boards, or by laying small blocks or connected blocks (Japanese Patent Application Laid-open No. 195605/1983). , No. 58-222203).

[Problem that the invention seeks to solve]

However, since large precast boards have a large area, they are susceptible to cracks due to various influences such as temperature changes, vehicle loads, and ground subsidence after construction, and small blocks are manufactured in large quantities. It takes a lot of work both on top and in construction, and work efficiency is extremely low. Furthermore, a connecting block is a flexible plate-like structure made by connecting a number of blocks to each other using a connecting material such as a wire mesh.It is difficult to manufacture, and its flexibility makes it difficult to transport and install. It is cumbersome to handle.

Therefore, the present invention eliminates these various drawbacks, and furthermore, the advantages of large precast boards (manufacturing,
A precast board for paving that incorporates the advantages of small blocks or connected blocks (accommodates the undulations of the road surface and does not cause cracks in each unit block), and its manufacturing method, and its use. The aim is to provide paved roads with improved quality.

[Means for solving problems]

The configuration of each of the present inventions will be explained based on the illustrated embodiments as follows.

Precast Board for Paving A rectangular precast board a has a mesh b embedded in the entire thickness of the board near its bottom in parallel to the bottom.
Furthermore, separators c that divide the precast board a into a grid pattern are buried vertically and horizontally with their upper edges flush with the top surface of the precast board a and their lower edges substantially aligned with the top surface of the net b. ing.

Method for manufacturing a precast board for paving: In a bottomed form e, separators c are placed vertically and horizontally to form sections 1 in the shape of a checkerboard. Cement mortar or resin mortar is poured into each section 1 until it is flush with the upper edge of the separator c.
A net b is placed on top of the net b, and cement mortar or resin mortar is again poured onto the net b to bury the net b.

Paved road A precast paving board a having the above structure is laid on two surfaces of the base pavement with an adhesive 3 interposed therebetween.

In the above, the precast board a may be made of synthetic resin such as epoxy, polyester, or acrylic, in addition to being made of cement concrete.
Moreover, it does not matter whether the mesh b is made of wire mesh or synthetic resin. In other words, these materials are not important components of each invention and can be selected as appropriate. The separator c is made of a material that does not originally impregnate water or synthetic resin, or is made of a material that has been subjected to a necessary waterproofing treatment, and is in the form of cardboard.

[Effect]

The precast board for paving of the present invention is partitioned into a grid pattern by separators c, but the whole is continuous due to the thickness near the bottom surface, that is, the bottom part, in which the net b is buried in the entire area, and unlike the conventional Since the size is equivalent to one large precast board, manufacturing,
It has the advantage of being easy to transport and construct as a large pre-cast board, and also, since it is curved at the separator c section and its extended bottom can be separated, it can withstand undulations or unevenness of the road surface. It can be fitted in the same way as a conventional small block or connecting block.

According to the manufacturing method of the present invention, a precast paving board having the above structure can be easily manufactured.

In addition, the road of the present invention is one in which a precast paving board having the above structure is laid on two surfaces of the base pavement with an adhesive 3 interposed therebetween, and a large number of small blocks d separated by separators c are arranged in a row. in a state of
These small blocks d, like conventional small blocks, do not cause cracks due to temperature changes, vehicle loads, ground subsidence, etc. after construction, and even during construction, precast boards a are similar to large boards. Although it can be easily handled as a road surface, the small blocks d divided by the separator c are separated at the separator c as described above to adapt to the slight undulations of the road surface.

〔Example〕

Examples will be described in detail below.

A is a precast board made of cement concrete or synthetic resin, and b is a mesh made of metal or synthetic resin, which is buried in the bottom of the precast board a, that is, in the entire thickness of the wall near the bottom surface, and is buried parallel to the bottom surface. A separator c is made of waterproof paper and divides the precast board a into a large number of small blocks d, which are about the same size as conventionally known small blocks. That is, the separator c has an upper edge attached to the precast plate a.
They are buried vertically and horizontally within the wall thickness of the precast board a with the lower edge substantially aligned with the top surface of the mesh b, thereby dividing the precast board a into a grid pattern. This is what we are doing.

The method for manufacturing the paving precast board having the above structure is as follows.

e has an internal length, width, and height of approximately 100 cm and 60 cm, respectively.
cm, 4 cm, a square bottomed formwork f is an assembled separator formed by assembling the above-mentioned separators c vertically and horizontally to form a large number of sections 1, and this assembled separator f is fitted into the bottomed formwork e.

Next, cement mortar or resin mortar is poured into the bottomed form e, that is, into each section 1, until it is flush with the upper surface of the assembled separator f, that is, the upper edge of each separator c.

Subsequently, the above-mentioned net b
Thereafter, cement mortar or resin mortar is again poured onto the net b until it is flush with the upper opening of the bottomed form e, and after hardening, the mold is removed.

As a result, the length, width, and height are approximately 100
cm, 60cm, and 4cm precast paving plates a are produced.

This precast paving board a is lowered onto the adhesive 3 applied and spread on the upper surface of the base pavement 2 of the road g, and is pressed by rolling pressure to complete construction of the intended paved road.

Figure 4 shows a cross-section of one side of a road on which cement-concrete paving precast plates a and a have been laid along the road ruts, and Figure 5 shows an enlarged view of the main parts. Straight asphalt is used as the agent 3, and asphalt 4 for rubbing is filled between the two plates a and the outside thereof.

In the above, if there are undulations on the rut surface,
By rolling, the small blocks d of the paving precast board a separate their extended bottoms at the separator c, are bent and displaced, and are pressed onto the adhesive 3 and integrated.

〔Effect of the invention〕

As is clear from the above, the precast board for paving of the present invention has separators dividing it into a grid pattern, but the thickness near the bottom where the net is buried throughout the area, that is, the bottom part The entire piece is continuous and has a size equivalent to a single conventional large precast board. Therefore, it has the advantage of being easy to manufacture, transport, and install as a large precast board. Furthermore, since the separator part is curved and its extended bottom part can be separated, it adapts to the undulations or unevenness of the road surface in the same way as conventional small blocks or connected blocks.

According to the manufacturing method of the present invention, a precast paving board having the above structure can be easily manufactured.

In addition, the road of the present invention has the above-mentioned paving precast board laid on the underlying pavement surface with an adhesive, and has a large number of small blocks separated by separators arranged in a row. Like conventional small blocks, these small blocks do not cause cracks due to temperature changes, vehicle loads, ground subsidence, etc. after construction, and even during construction, precast boards can be used as large boards. Although it is easy to handle, small blocks divided by separators can be separated and adapted to the slight undulations of the road surface as described above.

In this way, the precast board for pavement of the present invention is
It combines the advantages of conventional large precast boards, small blocks, and connecting blocks, and eliminates their disadvantages, and is effective not only for new pavement construction but also for repair pavement construction.

In particular, when repairing damaged or rutted road surfaces caused by vehicles using spiked tires, tire chains, etc., it is possible to perform construction quickly and in a short period of time with fewer traffic obstacles. This makes it possible to create a paved road that requires less frequent repairs later on.

[Brief explanation of drawings]

The drawings show embodiments of each of the inventions, and Fig. 1 is a perspective view of a precast paving board, Fig. 2 is a sectional view thereof, and Fig. 3 is a perspective view of a net, an assembled separator, and a bottomed formwork. , FIG. 4 is a sectional view of a road using the above-mentioned precast paving board, and FIG. 5 is an enlarged view of the main part thereof. a...Precast board, b...Net, c...Separator, d...Small block, e...Bottomed formwork, f
... Assembly separator, 1 ... Division, 2 ... Base pavement, 3 ... Adhesive.

Claims (1)

[Scope of Claims] 1. A rectangular precast board, in which a net is embedded in the entire wall thickness near the bottom surface parallel to the bottom surface, and a separator that divides the precast board into a grid pattern, A precast board for paving, characterized in that it is buried vertically and horizontally with its upper edge flush with the top surface of the precast board and its lower edge substantially aligned with the top surface of the net. 2 A step of placing separators vertically and horizontally in a bottomed form to form sections in a grid pattern, and a step of pouring cement mortar or resin mortar into each section until it is flush with the upper edge of the separator. A method for producing a precast board for paving, comprising the steps of: placing a net on top of the net; and pouring cement mortar or resin mortar again onto the net and burying the net. 3 It is a rectangular precast board, and a net is embedded in the entire thickness of the board near the bottom parallel to the plane, and a separator that divides the precast board into a grid pattern has an upper edge of the precast board. The precast boards for paving are buried vertically and horizontally so that they are flush with the upper surface and their lower edges are substantially aligned with the upper surface of the net, and are laid on the underlying paved surface using an adhesive. Paved road.