JPS603135Y2 - Asphalt pine core material - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a core material to be inserted into an asphalt mat provided for the foundation of a breakwater, etc. in the construction of ports, seawalls, etc.

The above-mentioned asphalt mat is molded into a mold using asphalt, fine aggregate such as stone powder and sand, and coarse aggregate such as crushed stone, and the core material is laid and inserted as reinforcement during molding.

Therefore, such a core material is
In addition to being heat resistant enough to withstand moderately high temperatures and having good adhesion to asphalt, it is also required to have excellent strength, ease of handling, and good workability during mat production.

In the past, hemp netting was used as the core material, but it had problems with strength and heat resistance, so recently glass fiber has been used. The strips 1 were assembled in a lattice pattern, and their intersections were joined with clasps 2 or the like.

However, with this conventional method, the lattice pattern must be knitted by hand, which is extremely troublesome.
In addition, the intervals become irregular and the accuracy deteriorates.

In addition, woven items are thicker and difficult to transport and store in rolls, resulting in large losses during transportation.
Moreover, if it is folded, there is a risk that the strength will decrease at the crease.

Furthermore, it may be possible to transport the upper lattice-like material as a roll of fixed length, but when using it, the ends would be overlapped, and this overlapping part has a disadvantage in terms of the strength of the asphalt mat. There are also unnecessary parts, there is a lot of waste, and the strength of the overlapping part of the brackets is very unstable.

The purpose of the present invention is to solve the above-mentioned disadvantages of the conventional example, and because it is not necessary to knit the fiber strips that provide the main strength of the core material in a lattice shape, manufacturing is simple and transportation and quality control are easy. The quality is stable, and the strength, width, and
Asphalt mat core material whose spacing etc. can be freely adjusted according to the application, and furthermore, when inserting it into the asphalt mat, the strength and direction of strength of the mat itself can be freely adjusted by changing the method of laying this core material. Our goal is to provide the following.

However, according to the present invention, the purpose of the lever is to impregnate asphalt or resin into a lattice body, which is a combination of heat-resistant fiber strips arranged in parallel at regular intervals and parallel threads at regular intervals perpendicular to the strips. This is achieved by

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

Fig. 2 is a perspective view showing an embodiment of the core material of the present invention, and Fig. 3 is a partially enlarged view. It is a strip made of fiber.

As shown in Fig. 3, these belt-like bodies 3.3', 3''... are made by arranging a large number of strings made of fibers and knitting them into a shape, but they are not necessarily the same as the example shown in the figure. It is not limited, and may be manufactured by other methods.

In the case of this figure, each strip 3.3', 3''...
・A twine 4 is placed on both sides to prevent fraying.

The above strips 3.3', 3"... are arranged in parallel at regular intervals of about 20, and each strip 3.3', 3"...
...This strip-shaped body 3.3', 3''...
etc., are connected in groups of threads 5.5', 5'', etc. perpendicular to each other.

In addition, these threads 5, 5', 5''... are made of the same glass fiber etc. as the strips 3゜3', 3''..., and are approximately IC771 each. In order to arrange the strips 3.3', 3", etc. in parallel at regular intervals and perpendicularly intersect with the strips 3.3', 3", etc., as shown in FIG.
Connect a part of ... with this in a sewing-like manner.

Such strips 3.3', 3''... groups and threads 5
A lattice body consisting of groups of ゜5', 5''... is impregnated with asphalt or resin.

Next, to explain how to use it, the core material of the present invention produced as described above does not overlap the strips 3.3', 3", etc., so it is difficult to You can roll it out, pull it out and cut it to the required area for use.

In addition, since it is impregnated with asphalt or resin, the mat has increased strength and adhesion with asphalt during mat production, and even if it is cut during the above-mentioned use, the cut portion will not fray.

To manufacture an asphalt mat using such a core material, first melt a mixture of asphalt and aggregate at about 200°C, inject it into a formwork to create a lower asphalt mixed layer, and then Once cooled, the core material of the present invention is placed.

In addition, when arranging the above, as shown in Fig. 4, if two sheets of the core material of the present invention are placed one on top of the other and placed so that the 3.3', 3", etc. are orthogonal to each other, the vertical Strength can be obtained both in the direction and in the lateral direction.

Subsequently, molten mixed asphalt is similarly injected into the mold to form an upper asphalt mixed layer, thereby obtaining an asphalt maturo with a core material as shown in FIG.

At that time, the molten mixed asphalt was mixed into strips 3゜3', 3''
It passes through the gap between the threads 5, 5', 5''... and becomes integrated with the mixed asphalt of the lower layer,
The core material is firmly fixed within the asphalt mix layer.

Moreover, FIG. 6 shows another example of use, in which two pieces of the core material of the present invention may be placed vertically apart from each other to obtain matsuturo instead of being directly stacked on top of each other.

In this way, the position and number of the core material of the present invention to be inserted into the Matsutoro, and the belt-shaped bodies 3゜3', 3'', which constitute the core material, are as follows.
The strength of the asphalt mat itself can be freely set in the direction of...

The core material of the asphalt mat of the present invention having the structure described above has the following effects.

■ Since the core material is impregnated with asphalt or resin, its tensile strength increases, and it also prevents deterioration of strength due to rubbing, unevenness, temperature, moisture, etc., and also improves adhesion with the asphalt that makes up the mat. It can be inserted into the mat in a stable state, and even when it is cut and only the necessary amount is used, no fraying occurs at the cut portion.

■ The core material itself can be rolled up during transportation and storage, and then cut out and used only when necessary, so instead of manufacturing mat-sized core materials at the factory and transporting them to the site, as was done previously. This eliminates the need to transport the product, reducing transportation loss, which is economical, and eliminates the risk of quality deterioration due to folding for transportation.

■ There is no manual work to weave the strips in a lattice pattern as in the past.
Since it is only necessary to overlap them in the mat or insert them one above the other, the process is simplified and the mat can be manufactured easily and quickly.

■ As the core material inserted into the mat can freely set the insertion point and insertion direction of the strip which has the main strength, it is possible to freely set the insertion point and insertion direction of the core material, which has the main strength. You can get asphalt mats.

[Brief Description of the Drawings] Figure 1 is a plan view showing the core material of a conventional asphalt mat, Figure 2 is a perspective view showing an embodiment of the core material of the present invention, and Figure 3 is a part of Figure 2. The enlarged slope view, Figure 4, shows the core material in Figure 2.
The oblique view of the stacked asphalt mats, and FIGS. 5 and 6 are longitudinal sectional front views of the asphalt mat with the core material inserted. 1.3.3', 3''...band-shaped object, 2...
- Clasp, 4...Twin thread, 5.5', 5"...
... Thread, 6... Asphalt mat.

Claims (1)

[Scope of utility model registration request] A core of an asphalt mat characterized by impregnating asphalt or resin into a lattice body which is a combination of a group of heat-resistant fiber strips arranged in parallel at regular intervals and a group of parallel threads at regular intervals perpendicular to the strips. Material.