JPH10176112A - Paving material for road, etc. - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paving material for road which can not only use asphalt effectively but also apply necessary color, and give the most suitable hardness for road, and is excellent in durability and can be processed in a usual way. SOLUTION: This paving material for road, etc., is formed by kneading the materials (1)-(8) into 50g asphalt at the ratios shown in the following. (1) asphalt emulsion 50cc, (2) asphalt dispersant 500cc, (3) sodium hydroxide 100g, (4) white cement 150g-200g, (5) titanium oxide 300g, (6) synthetic rubber 20-30g, (7) polypropylene powder 30g, (8) pigment 70g.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a material for pavement of roads and the like, and more particularly to a pavement material which has overcome the difficulty in coloring asphalt.

[0002]

2. Description of the Related Art General roads, parks, and promenades in shopping streets are so-called pavements, and various methods and materials for pavement have been proposed. In particular, the pavement method or pavement material that has recently attracted attention is not only a pursuit of sufficient functionality to perform sufficient pavement, but also a sensitivity problem that it is possible to apply beautiful colors. Is also moving in the direction of trying to solve it.

[0003] For example, Japanese Patent Application Laid-Open No. 3-115607 discloses a method of providing an inexpensive asphalt pavement method having good water permeability, beautiful colors and gloss, and an inexpensive asphalt pavement. 95% or more of appropriate additives such as materials are blended, and the mixture, which is entirely colored, is directly and appropriately thickened on a roadbed made of crushed stone to form a surface layer, and the surface of the surface is decorated. Spray the granules for
An asphalt pavement method characterized by finishing rolling and further polishing the surface layer has been proposed. According to this pavement method, `` The appearance of the surrounding asphalt mixture is very porous and highly permeable, and the shine of the ornamental granules scattered and polished on the surface layer and It blends well with buildings, has a beautiful appearance, and has low cost. " (Effects of the invention on page 3 of the above publication)

[0004] However, the raw asphalt itself obtained by distillation of natural or crude oil is an individual or a semi-individual mainly composed of “clear blue” which originally exhibits a black or dark brown color. According to experiments, it is almost impossible to decolorize it at low cost. Therefore, the "decolorized asphalt" itself, which is a major premise of the invention disclosed in Japanese Patent Application Laid-Open No. 3-115607, is difficult to obtain in the first place, and even if obtained, it is very expensive. The invention disclosed in the gazette is not suitable for being implemented as a whole.

[0005] On the other hand, what is required of roads in the current vehicle society is not "being highly permeable".
More durability of the surface layer. That is, on a road with heavy traffic, particularly at an intersection, a large amount of vehicles pass with braking, and a large force is applied to the road surface many times, thereby forming a rut on the surface of a pavement road. These ruins hinder safe traffic and must be repaired early. In order to perform this repair, the cost is higher than forming a new pavement road. Therefore, it is necessary to reduce the number of repairs if possible.

On the road pavement, in order to reduce costs by using waste materials and to make effective use of waste materials,
It is common to use asphalt. However, when asphalt is mixed, the surface is softened and deformed, for example, like a road exposed to direct sunlight in the middle of summer, so that repairs must be performed every year.

[0007] If so, it seems to be good to perform a very hard surface pavement, such as concrete pavement.
A pavement with a very hard surface would not be useful for passing vehicles. This is because if the surface layer on which the tire comes into contact with the ground is very hard, the wear of the tire becomes severe. Also, consider the promenades of parks and shopping streets where people walk directly on them,
If this promenade has a certain degree of softness, such as "soil", walking fatigue is reduced. However, if these promenades are made too hard because the durability is taken into consideration, the promenades become easily prone to walking fatigue.

The inventor of the present invention has conducted various studies on how to obtain a more functional pavement material while taking advantage of the use of asphalt, and as a result, completed the present invention. It is.

[0009]

SUMMARY OF THE INVENTION The present invention has been made to improve the above situation, and an object of the present invention is to further enhance the functionality while effectively utilizing asphalt.

That is, the object of the present invention is to
Of course, you can use asphalt effectively,
It is an object of the present invention to provide a pavement material for roads which can be provided with necessary coloring, and which can provide an optimum hardness to a road, has excellent durability, and can be constructed by a usual method. .

[0011]

Means for Solving the Problems In order to solve the above problems, the means adopted by the present invention is as follows: "50 g of asphalt is provided with the following materials (1) to (8) at each subsequent stage. A pavement material for roads, etc., formed by kneading at the indicated ratios: (1) asphalt emulsion 50 cc (2) asphalt dispersant 500 cc (3) caustic soda 100 g (4) white cement 150 g to 200 g (5) Titanium oxide 300 g (6) Synthetic rubber 20 g to 30 g (7) Polypropylene powder 30 g (8) Pigment 70 g ". Of course, the amount shown in the next row of each material indicates the ratio to the total amount of (1) to (8) with respect to, for example, 50 g of asphalt, and is not limited thereto. Needless to say, it is only necessary to use the paving material.

[0012] When constructing the pavement material of the present invention, it is necessary to employ asphalt emulsion. The reason is that asphalt produced as waste material is effectively used, and the cost of the entire pavement material is reduced. To do that. Of course, the asphalt itself is in a solid or semi-solid state and is difficult to handle as it is, so it is used as a liquid asphalt emulsion in which asphalt is dispersed in water using an emulsifier, and asphalt remains as it is. If so, it must be heated and softened, but by using asphalt emulsion,
Eliminate or minimize heating during kneading and construction.

The above asphalt emulsion contains asphalt, which is an oily substance, an emulsifier for uniformly dispersing the asphalt, and water. The emulsifier is used for the purpose of uniformly dispersing water molecules in asphalt, and the emulsion in this case is a so-called W / O type. And the water in this emulsifier effectively acts to harden the cement and to give appropriate strength to the asphalt pavement surface.

[0014] This asphalt emulsion, 50cc
Although it is necessary to prepare a certain amount, as described above, this amount is specified in relation to other materials described below. And the amount of this asphalt emulsion is 50cc
The reason why the degree is required is that if the amount is more than 50 cc, the coloring property of the pigment described below decreases, which is not preferable. If the amount is less than 50 cc, the asphalt cannot be effectively used. It is.

The pavement material of the present invention requires about 500 cc of an asphalt dispersant, because asphalt itself is a substance that is difficult to disperse evenly in other materials. This is because the asphalt dispersant makes the asphalt in the asphalt emulsion more easily dispersed in other materials. If about 50 cc of the asphalt emulsion is used, about 500 cc is required as an asphalt dispersant for neutralizing the asphalt therein.

The caustic soda (3) is necessary for decolorizing the asphalt in the asphalt emulsion to a certain extent, and requires about 100 g in relation to the amount of each material described below and the amount of asphalt in the asphalt emulsion. It is.

The white cement (4) is for imparting hardness to the surface of the pavement completed by the pavement material, and is 150 g to 200 g in relation to the amount of each material.
It is necessary to some degree. Of course, this white cement is 15
If it is less than 0 g, the required hardness of the road surface cannot be obtained, and if it is more than 200 g, the required flexibility of the road surface cannot be obtained unless the amount of the following synthetic rubber is increased. Of course, this white cement is hardened by water, and the water contained in the above-mentioned asphalt emulsion or asphalt dispersant is effectively used.

On the other hand, the titanium oxide (5) is used for decolorizing the entire pavement material containing asphalt and for maintaining the hardness of the completed road surface. Optimally, the ratio to the total is about 300 g. The reason is that this titanium oxide is 300g
If the amount is less than this, sufficient decolorization of asphalt cannot be performed, and if the amount is more than 300 g, the effect for decolorization cannot be improved.

Asphalt is an individual or semi-solid carbon-based black substance whose main component is, as described above,
It is extremely difficult to whiten this. Generally, an oxidizing agent, a reducing agent, or the like is used to decolor organic dyes, but it is not effective for the asphalt. Therefore, in the pavement material according to the present invention, a method of decoloring by a physical method using titanium oxide is adopted instead of decomposition and decolorization by a chemical agent.

The synthetic rubber (6) is necessary for providing elasticity such as "soil" to the surface layer of the completed road, and is also required as a "binder" for connecting each material particle. It is something. That is, this synthetic rubber forms a film on the surface of asphalt and effectively acts as an adhesive such as the above-mentioned titanium oxide. In that sense, the optimal amount of the synthetic rubber is 20 g to 30 g. If the amount of the synthetic rubber is less than 20 g, the necessary elasticity cannot be imparted and the connecting effect between the material particles cannot be sufficiently exerted. If the amount is more than 30 g, the completed road surface is made unnecessarily soft. Not only that, since synthetic rubber is an expensive material, it raises costs and is meaningless.

The synthetic rubber can be used alone or in combination with natural rubber, but the amount of addition greatly affects the hardness of the road after paving. For this reason, it is necessary to minimize the amount of the synthetic rubber to be added to roads where heavy vehicles may pass.

And, the polypropylene powder of (7)
Like the synthetic rubber described above, it is used as a link between the respective material particles, so to speak, instead of the expensive synthetic rubber, and the optimum amount is about 30 g. This polypropylene powder is added next to (1) to (3) when the respective materials are kneaded as in the embodiment described later,
It is added and kneaded before the synthetic rubber of (6).

The base material as the pavement material of the present invention is completed by each of the above-mentioned materials. In the pavement material of the present invention, the pigment (8) (of various colors) 70g is used (although there are things). The optimum amount is about 70 g if each material has the above ratio.

With the pavement material according to the present invention configured as described above, asphalt in the asphalt emulsion, when paved using the same, has a decolorizing effect of caustic soda and a white cement and white color of titanium oxide. The color is sufficiently bleached, and the color of the pigment is surely developed, so that the aesthetic appearance of a road such as a promenade is made sufficient. In addition, even if the road surface formed by this paving material is raised by, for example, solar heat, the white cement and titanium oxide are not softened, and the softening point of the polypropylene powder is 120 ° C or higher, Does not soften. Of course, the road surface formed by this paving material contains a large amount of white cement and titanium oxide, and thus has a desired hardness and excellent durability.

Therefore, the road formed by the pavement material does not have a car rut and does not need to be repaired frequently even in a place where the traffic is heavy. Also, even if the pavement material contains asphalt or synthetic rubber, the road formed by this pavement material does not soften even when the temperature is raised by direct sunlight in the summer, and frequent repairs are not required. Not only that, it is also excellent in durability.

Also, since the pavement material contains synthetic rubber, the road surface formed by this pavement material has a certain degree of softness as if it were the surface of soil, so that the user walks on it. People rarely feel tired.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION In order to form the above-mentioned pavement material, the following method is preferred. The amount of each material shown below is
As described above, it is a laboratory stage, and when performing actual pavement construction, it is only necessary to use materials in proportions corresponding to the respective amounts.

(1) Pavement material for roads where heavy vehicles may travel First, 50 cc of asphalt, 50 cc of asphalt emulsion, 500 cc of asphalt dispersant, and 30 g of polypropylene powder were added and blended. At about 100 ° C. At this stage, since the heat generated by the kneading is small, the polypropylene powder has not been softened yet.

[0029] 200 g of white cement, 300 g of titanium dioxide, and 20 g of synthetic rubber are added to the above kneaded material, and then kneaded while heating to about 170 ° C. At this time, the temperature rises due to frictional heat generated by the kneading operation, and the temperature rises to about 170 ° C. This increase in temperature softens the added synthetic rubber and polypropylene powder, thereby bonding the material particles.

Then, 70 g of a pigment of a required color is added to the kneaded material as described above, and kneading is performed until the pigment is sufficiently colored. Thereafter, the completed kneaded material is laid directly on the surface of the crushed stone formed on the roadbed, and the pavement is completed after the hardening thereof is completed.

The pavement road made of the paving material obtained as described above has a tough strength enough to withstand frequent running of heavy vehicles, and is sufficiently colored by pigments. It became the most suitable pavement material for the road on which it travels.

(2) Pavement for Promenade First, 50 cc of asphalt, 50 cc of asphalt emulsion, 500 cc of asphalt dispersant, and 30 g of polypropylene powder are added and blended, and kneaded at about 100 ° C. At this stage, since the heat generated by the kneading is small, the polypropylene powder has not been softened yet.

To the above kneaded material, 150 g of white cement, 300 g of titanium dioxide and 30 g of synthetic rubber are added, and then kneaded while heating and raising the temperature to about 170 ° C. At this time, the temperature rises due to frictional heat generated by the kneading operation, and the temperature rises to about 170 ° C. This increase in temperature softens the added synthetic rubber and polypropylene powder, thereby bonding the material particles.

Then, 70 g of a pigment of a required color is added to the kneaded material as described above, and kneading is performed until the pigment is sufficiently colored. Thereafter, the completed kneaded material is laid directly on the surface of the crushed stone formed on the roadbed, and the pavement is completed after the hardening thereof is completed.

The pavement promenade made of the pavement material obtained as described above gives the human body a ground-like feel and is sufficiently colored by pigments, making it an optimum pavement material for a promenade. Was.

By the way, the mixing and kneading of each of the above-mentioned materials are as follows.
What is necessary is just to employ the asphalt plant currently used for asphalt pavement as it is. In this case, in the asphalt plant, only the formation of the kneaded material before adding the pigment is performed, and if the addition of the pigment is performed at a pavement site, for example, using a generally used asphalt finisher, the pavement material As a result, the asphalt plant manufacturing operation accompanying the color change can be omitted. That is, if the coloring of the pavement material according to the present invention by the pigment is not performed in the asphalt plant, the kneaded material in that case is one in which the asphalt has been almost decolorized, so that the following another coloring is performed. Because it is convenient.

[0037]

As described in detail above, in the present invention,
As exemplified in the above embodiment, asphalt emulsion, asphalt dispersant, caustic soda, white cement,
The pavement material formed with titanium oxide, synthetic rubber, polypropylene powder, and a pigment of a desired color in the above proportions has the feature, whereby, as a matter of course, asphalt can be effectively used, and necessary coloring is applied. Thus, it is possible to provide a pavement material for roads, which can provide optimum hardness to roads, has excellent durability, and can be constructed by ordinary methods.

The construction using the paving material according to the present invention is as follows:
It can be carried out by an ordinary method, and it is not particularly necessary to employ new facilities and equipment, and the construction cost can be reduced.

Claims (1)

[Claims] (1) For 50 g of asphalt, the following (1)
A pavement material for roads or the like, characterized by being formed by kneading the materials of (8) to (9) at the ratios shown in the following stages. (1) Asphalt emulsion 50 cc (2) Asphalt dispersant 500 cc (3) Caustic soda 100 g (4) White cement 150 g to 200 g (5) Titanium oxide 300 g (6) Synthetic rubber 20 g to 30 g (7) Polypropylene powder 30 g (8) Pigment 70g