JP2001026903A - Surface treatment method for passage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To realize a surface treatment for passage having satisfactory strength, adhesive strength and durability by applying a coating material consisting of a mixture of a resin hardenable even under the present of water with aggregates. SOLUTION: From the viewpoint of ensuring water permeability and preventing the void clogging by dust, aggregates are formed of, for example, 60-90 wt.% of aggregates with a large grain size of 3.0-0.4 mm and 10-40 wt.% of aggregates with a small grain size of less than 0.4 mm, and a polysulfide denatured resin hardenable even under the presence of water is mixed to the aggregates. More specifically, the resin is applied to the circumference of the aggregates to the degree where the aggregates are mutually spot-connected by the resin. For example, when the aggregates of 1.5 mm or less and polysulfide denatured urethane are used, the weight ratio of aggregate/resin is set to about 13/1-3/1. A coating material 2 is preferably filled only in voids 5 present on the surface of asphalt, whereby the aggregates 4 in the asphalt paint are firmly fixed, and the water permeability as the whole is retained. Since this coating material 2 can be applied even under the presence of water, the term of works can be remarkably shortened, and the strength, adhesive strength and durability can be also improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for treating a surface of a passage capable of performing a surface treatment excellent in strength, adhesive strength and durability in a short period of time.

[0002]

2. Description of the Related Art Conventionally, passages (including roads) have been paved with asphalt or concrete. In this method, a mixture of asphalt (or concrete) and aggregate (pebble) is laid on the surface of a passage. They are,
This is because it is superior in cost and durability to other methods.

[0003] However, even such a pavement method has various problems, and may require more excellent functions. For example, there are cases where it is required to prevent clogging together with water permeability, when noise prevention is required, and when there is a demand for facilitating repair and improving durability.

For example, a demand for water permeability occurs in the following situation. In the case of asphalt pavement, since the asphalt component itself does not allow water to permeate, the entire pavement surface does not permeate water and either accumulates on the surface or flows into a gutter. However, if rainwater accumulates on the road surface, it forms a film, which is very dangerous because it leads to an automobile slip accident. In addition, since there was no permeation of water downward and the water flowed downstream from the gutter, groundwater was reduced and land subsidence occurred. In addition, the decrease in groundwater is also affecting surrounding plants.

Therefore, a so-called drainage and water-permeable asphalt has been recommended so that the pavement surface has a function of transmitting water downward (water permeability), absorbs rainwater, and does not form a film on the surface. This is to increase the grain size of coarse aggregate as aggregate,
In addition, the range of the particle size is narrowed, and a high viscosity modified asphalt having excellent durability is used as the asphalt. Thus, the aggregates are point-bonded to each other, a gap is provided, and water is transmitted between the gaps.

[0006] Further, a demand for facilitating the repair of roads is that, in the case of concrete pavement, unevenness occurs on the pavement surface,
Occurs when reproducing smoothness. That is, since concrete cannot be spliced, it is necessary to remove all the concrete portions and to cast new concrete again. This not only greatly increases the cost and construction period, but also raises serious problems in the treatment of concrete waste.

Therefore, it is conceivable to provide a resin layer as a protective layer on the concrete surface. This is a method of applying a resin after the concrete is hardened.

[0008]

However, in the above-described water-permeable asphalt method, since the aggregate itself is bonded and fixed only at points, the aggregate separates on heavy roads or the like, and the aggregate is separated by a tire or the like. It is often scattered, and as a result, the portion often becomes a concave portion. Further, once the concave portion is formed, the scattering of the edge portion is further accelerated. Therefore, the road must be repaired frequently (every year or about once every two years). Not only causes traffic congestion due to traffic interruption, etc., but also costs are considerable.

Further, in order to ensure water permeability, a void is naturally required, but the void is clogged with dust or sand, and the void is clogged. If the voids are clogged, the water permeability will be lost or significantly reduced. Further, the aggregate constituting the surface structure of the water-permeable pavement moves due to the temperature and the traffic load, and the so-called voids are crushed, which impairs the water-permeable performance.

In other words, in order to ensure water permeability, it is essential to prevent the collapse of the voids on the pavement surface and the clearance of the pavement voids. However, if there is a gap for water permeability, the gap is caused by sand and the like entering the gap, and the gap itself is clogged due to deformation of a tissue constituting a pavement surface. Ensuring water permeability and preventing void clogging are contradictory matters.

In order to obtain a pavement with as small a gap as possible and excellent durability, the aggregate and resin constituting the pavement are important. A suitable aggregate particle size and particle size distribution for preventing void clogging have already been devised and filed.

However, as the binder of the aggregate used at that time, a usual resin such as an epoxy resin or a urethane resin is used. When a method for preventing void clogging is applied to newly used water-permeable asphalt road pavement and repair, these generally used resins have disadvantages due to water and cause various problems. That is, in the case of a newly constructed asphalt pavement, water is often sprayed on the compacting machine in order to prevent adhesion to the compacting machine. Therefore, the pavement surface immediately after compaction is wet with water. In the presence of water, resin mortar for preventing void clogging cannot be applied. When applied, the resin causes poor curing, and not only does not exhibit sufficient strength (such as adhesive strength), but also has insufficient durability. Also, at the time of construction, the weather is not always sunny, and even in the case of rain, it may be necessary to force the work due to the construction period, and as a result, the resin is deteriorated by water.

Further, even if a protective layer is provided on the surface, simply applying a resin layer on a concrete layer or the like causes delamination, resulting in a very short life as a pavement road.

In view of the background of the prior art, the present invention
An object of the present invention is to provide a surface treatment method for a passage which can be constructed even in rainy weather, and which can provide a surface-treated passage excellent in strength, adhesive strength and durability in a short construction period.

[0015]

The present invention employs the following means in order to solve the above-mentioned problems. That is, the method for treating the surface of a passage according to the present invention is characterized in that an application material obtained by mixing a resin and an aggregate that cures even in the presence of moisture is applied onto the passage.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION The passages referred to here are roads (roadways, sidewalks), bridges, gardens, parks, and the pavement may be asphalt pavement or concrete pavement. The asphalt and concrete layers may be water-permeable or non-water-permeable.

Further, in the present invention, the timing of applying the resin mortar is not limited. It may be after the asphalt layer or concrete layer has hardened (new or existing) or before hardening. Before hardening in the case of asphalt is a state in which the temperature of the asphalt is high and fluidity still remains. Also,
The term “before hardening in the case of concrete” as used herein is a concept that includes all the period from the time when the surface water is drawn immediately after casting to the time when it is completely hardened. However, between 1 and 2 days immediately after the concrete is cast is preferable. As described above, if the applied layer is applied before the layer is completely or incompletely cured, the permeability of the resin mortar is increased and the resin mortar adheres more firmly.

The resin which cures even in the presence of water means a resin which is not cured even if the resin before curing is in contact with moisture. In the present invention, any resin may be used as long as it is such, but a resin modified with polysulfide is preferable. This is one in which one or more units containing S are contained in the main chain or the side chain. Of course, the polymer is a collection of various molecular weights, and since the S content in the monomer unit may be different, the average amount of S is about 0 to 3 units.

More specifically, -X- (R ₁ -S _a ) _b-
R ₂ -Y- (polysulfide chain) is contained in the main chain or side chain.

Here, R ₁ and R ₂ are divalent methylene groups
(—CH ₂ —) divalent dimethyl ether group (—CH ₂
OCH ₂ —) divalent isopropanol group (—CH ₂ C
H (OH) CH ₂ —), a divalent ethanol group (—CH ₂
CH (OH) -), _{also, (- CH 2 CH 2 OCH} 2 O
CH ₂ CH ₂ —), (—CH ₂ CH ₂ O—), etc.
These may be one or more, and may be a combination thereof. Further, R ₁ and R ₂ may be the same or different.

X and Y are groups selected from -S-, -O- and -NH-. a is 0 to 5 for each repeating unit
And b is an integer of 1 to 50. However, when a is 0 for all the repeating units, at least one of X and Y is a -S- group. a is preferably 1 to 2.5.

It is sufficient that the above-mentioned polysulfide chain is located somewhere in the structure of the resin.

[0023] For example, in the case of epoxy, the synthesis method comprises adding a sulfur-containing monomer or oligomer having a reactive functional group (including a prepolymer) and an epoxy prepolymer having two or more epoxy groups in a molecule. It is synthesized by a reaction or, for example, an addition reaction of a polysulfide polythiol and an epoxy prepolymer.

In the case of urethane, one-pack urethane contains a polysulfide chain in part or all of the main chain of the molecule. Should be included. In the case of the two-pack type, the polysulfide resin (terminal S
H) may itself be a curing agent.

The aggregate includes stone, sand, gravel, ceramic, and their crushed and crushed products, plastic, rubber and the like. The size is not particularly limited, and may be determined depending on the case where water is passed, the case where filling is performed for durability, and the like. Generally, it is about 0.1 to 10 mm.

However, in order to ensure water permeability, the preferred size is one obtained by sieving a particle size of 3.0 mm or more. Of course, since strict sieving is not possible, more than about 10% by weight may be contained.

From the viewpoint of ensuring water permeability and filling the pavement surface with a resin mixture containing these aggregates to prevent clogging of voids, it is preferable that the aggregates have a certain particle size distribution. Was.

First, the first is as follows.

(1) Aggregate having a particle size of 3.0 to 0.4 mm is 60 to 90% by weight. (2) Aggregate having a particle size of less than 0.4 mm is 10 to 40% by weight. When a large aggregate having a particle diameter of 3.0 to 0.4 mm is mixed with 60 to 90% by weight and a small aggregate of less than 0.4 mm is mixed with 10 to 40% by weight, the balance between the water passage function and the void prevention function is improved. Well, it was found that water permeability was ensured and it was difficult for air gaps to be clogged. Particle size is 3.0-
When the large aggregate of 0.4 mm exceeds 90% by weight, the filtering effect is reduced. This is because, based on experiments performed by the inventor, the size of the material (sand, dust, etc.) that clogs the gaps of general roads is 0.1%.
This is because it was found that the majority was 0.2 mm. In addition, when a small aggregate having a particle size of less than 0.4 mm exceeds 40% by weight, water permeability decreases.

Further, the particle size distribution of the aggregate is as follows: (1) Aggregate having a particle size of 3.0 to 0.8 mm is 30 to 50% by weight in order to ensure water permeability and prevent clogging of voids due to dust and the like. 30 to 5 aggregates with a particle size of less than 0.8 to 0.4 mm
0% by weight (3) 5 to 15 aggregates having a particle size of less than 0.4 to 0.2 mm
% By weight (4) 2 to 15% by weight of aggregate having a particle size of less than 0.2 mm is preferred.

Among them, (1) 35-45% by weight of aggregate having a particle size of 1.2-0.8 mm (2) 35-45% by weight of aggregate having a particle size of less than 0.8-0.4 mm 4
5% by weight (3) 7 to 15 aggregates having a particle size of less than 0.4 to 0.2 mm
% By weight (4) 2 to 10% by weight of the aggregate having a particle size of less than 0.2 mm is preferable. As in this range, the particle size of the large aggregate is set to 1.2 mm or less, 0.4 mm to 1.2 m.
A greater effect can be obtained by not only setting the ratio of particles of m to 70% by weight or more and the ratio of particles of less than 0.4 mm to 25% by weight or less, but also defining the ratio of particles of each diameter.

The aggregate used in the present invention may be the above-mentioned stone or rubber alone. In particular, for those having poor adhesion and fixation to a cement-based solidifying material such as rubber, an adhesive is provided around the material. The surface material may be fixed through the intermediary.

The surface material may be silica sand grains or powder, cement powder, inorganic powder such as tanker, silica, ceramic, or the like, or organic powder such as pulverized plastic, or the like. It may be shaped. It may be a long one such as fiber or a fine powder such as fly ash. This is because the chemical entity and the reaction are not always required, but the physical existence and the shape itself are first required.
Of course, it is more preferable that the material is chemically fixed.

The size of the surface material is about 0.01 μm to 1 mm, but may be larger depending on the size of the core material. The size of the surface material may be determined based on the relative relationship with the core material. In the case of a fiber or the like, the length may be the same as the diameter of the core material (the longest diagonal line).

The surface material is not limited to one type, and a plurality of types may be used. In particular, the larger ones may be fixed first and the smaller ones partially fixed thereafter. In this way, the aggregate has a larger uneven surface as a whole.

In particular, if a fiber-like material is used as the large surface material, it is considered that the resistance when the aggregate comes off is large.

In order to fix the surface material to the core material to which the adhesive has adhered, the surface material may be applied to the core material. For example, the core material coated with a resin (adhesive) can be freely rolled in the surface material, the surface material is sprayed on the core material, or the core material is put into a container containing the surface material and stirred. The fixation of the surface material is simple because it only has to adhere to the entire periphery of the core material. Excess material does not adhere, and the surface material naturally adheres to the portion where the resin is exposed. After being fixed, an excess surface material may be removed with a sieve.

Fixing work (process) between the adhesive and the surface material
Is not limited to once, and may be performed a plurality of times. After applying the adhesive, a large and small surface material may be mixed and adhered.

The surface material particles tend to adhere to the surface of the adhesive preferentially as the adhesion area with respect to the weight increases.

When the surface material is applied to the surroundings after the adhesive is applied, the surface material does not always form a single layer and cover the entire surface uniformly. That is, there is a case where something is buried in the adhesive. In the present invention, all may be buried, but if part of the surface material located on the most surface is not covered with the resin, the physical and chemical properties of the surface material surface can be utilized. In many cases, the adhesion to the solidified material becomes good.

Further, after fixing a surface material (which may be of one type, two types, large or small, or various types) to the core material, a part of the surface material is removed by blasting or the like, and the surface of the aggregate is removed. Large irregularities may be formed.

The blasting treatment can be carried out by colliding high-speed small particles against the surface of the aggregate. The mixture may be caused to collide with the mixture. Further, when a part of the surface material particles is mixed with a material that is eluted or deformed by an organic solvent such as styrene foam, irregularities are easily formed on the aggregate surface by the solvent treatment.

The coating material is a mixture of the above-described aggregate and resin, and the mixing ratio is to be determined according to the size of the aggregate and the type of resin, and is not particularly limited. In resin,
Other than the aggregate, if it does not deviate from the gist of the present invention,
You can mix anything. For example, pigments, ultraviolet absorbers, and the like. This coating material (resin mortar) may itself be water-permeable or non-water-permeable. This is possible only by adjusting the mixing ratio of the resin and the aggregate.

Next, a method for ensuring water permeability when applied to asphalt pavement will be described. It is preferable to use a material that ensures a certain degree of water permeability, can fill the gaps between the stones on the surface of the asphalt layer, and has good workability. In this case, the resin of the present invention has relatively high water repellency after curing, so that the water permeability of the resin gap is good, and other treatments are unnecessary. Is also good.

In order to enhance the effect of preventing the asphalt aggregate from scattering, the resin may be mixed with short fibers for reinforcement.
For example, a carbon fiber about 1 mm long is
About 0.1 to 1.0% by weight is mixed. Of course, the fiber material may be glass, polyester, cotton thread, or any other reinforcing material.

In order to ensure the water permeability of the water-permeable coating material, not only the size of the above-mentioned aggregate but also the mixing ratio of the aggregate and the resin becomes a problem. However, that depends on the size of the aggregate and the type of resin. In short, it is preferable that the resin is applied around the aggregate and the aggregates are joined to each other at points by the resin. That is, the gap between the aggregates is secured. It is suitable to have a small thickness around the periphery, which is also the minimum thickness for joining the aggregate. Such a ratio is normal sand (1.5m
m or less) as the aggregate, and when using polysulfide-modified urethane as the resin, the weight ratio was about aggregate / resin = 13/1 to 3/1.

Generally, it is about 19/1 to 7/3.

In order to ensure water permeability, it is preferable that only the gap existing on the surface of asphalt or the like be filled (scrubbed), but it may be applied more than that. For example, several millimeters to 1
It is applied thicker than the asphalt surface by about 0 mm.

However, it is preferable to fill only the asphalt gap (aggregate gap).

An excellent feature of this example is that only the gap is filled with the coating material to expose the aggregate of the asphalt layer to the surface. As a result, the aggregate in the asphalt pavement is firmly fixed and has water permeability by itself, so that the water permeability as a whole is not impaired. In addition, since another layer is not added to the asphalt surface, delamination does not occur. The method of filling and coating is not particularly limited, but it is possible to manually fill the gaps in the stones of the asphalt surface layer with a rake or a trowel if it is a manual operation, or asphalt finisher for a road if the area is large. In addition, it is better to apply it so that it is worn by the head of the stone. The filling depth (thickness) is desirably sufficient to fill at least the aggregates on the surface in order to prevent the asphalt aggregate from scattering or flowing. Of course, it may be filled more deeply.

The method of the present invention can be applied not only to the coating of aggregates on the surface of asphalt or the like, but also to the coating of the aggregates, as well as to the concaves (macro concaves such as rutting and potholes, Or cracks).
Even when the asphalt is water-permeable, if that portion is largely peeled off and a dent is formed, garbage may be clogged or water may accumulate there. Therefore, if this is not repaired, the meaning of water-permeable asphalt is lost. Therefore, it is useful if the present invention is applied to such a place. Of course, a concave portion of a passage other than asphalt pavement may be used. Even in the presence of moisture, it can be used to repair any road because it solidifies and bonds.

Further, the coating material of the present invention can be applied on a passage having no water permeability (a non-water-permeable asphalt layer, a concrete layer, etc.) so that water does not accumulate on the surface.
For example, at bus stops and the like, there are many asphalt and concrete pavements that have no water permeability. In such a place, on a rainy day, a person waiting for a bus splashes and splashes rainwater collected on the road. In such a place, apply the coating material of the present invention to a predetermined thickness (about several mm to 10 mm).
It is applied. In this case, the surface water immediately permeates downward, and the surface water is not splashed by a vehicle or the like. The permeated water flows along the conventional surface into gutters and the like.

In recent roads, there is also a demand for applying a pattern to the road surface due to the problem of aesthetics for the area. In such a case, the present invention is very easy. First, a mold member (pattern) punching out a shape desired to be expressed as a pattern is laid on the road surface, and the coating material of the present invention (a color different from the existing pavement surface) is applied thereon. Then, when the mold member is peeled off after the application is completed, the pattern according to the mold member remains. In this case, the portion covered by the mold member may be left as it is, or a mold member having an inverse pattern may be placed and only the portion may be coated with the coating material of the present invention of another color.

In this way, it is possible to easily form a road with an excellent appearance and in which the separation of pebbles and the like is prevented.

Next, a method of applying a resin mortar before the applied layer is cured will be described.

First, before the asphalt is cured, the temperature is high (several tens of degrees Celsius) and the fluidity is low, but it can be applied immediately after the asphalt is laid, and the application can be performed as if it were one step. Of course, it can also be applied as a separate step. In this case, since the fluidity remains in the asphalt, penetration of the resin mortar is promoted. As a result, the resin mortar fits into the gaps in the concrete, and the resin mortar becomes a complicated structure and is stabilized, the asphalt aggregate scattering prevention property is significantly improved, and the resin layer is less likely to peel.

In the case of concrete, it may be applied at any time, but it can be applied sufficiently even if the water on the surface is drained. In such a state, since the fluidity is large, the permeability increases as in the case of asphalt, and the same effect as in the case of asphalt is exhibited.
This pre-curing application is one of the major features of the present invention that uses a resin that cures even in the presence of moisture. As a result, the delay of the next process due to the hardening time of the concrete, which is one of the causes of the increase in the conventional construction period, can be reduced, and the construction period is significantly shortened.

As described above, by laminating the resin mortar on the layer to be coated (asphalt, concrete, etc.), the layer to be coated is not only protected and the life is extended, but also when the surface is damaged, the resin mortar layer is removed. By replacing only the parts, repair work becomes very easy.

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

FIG. 1 shows an example of the method of the present invention, that is, prevention of clogging while ensuring water permeability on the asphalt pavement surface.
This is an example in which the aggregate is prevented from scattering.

FIG. 1A shows a state where the coating material 2 is applied to the asphalt pavement surface 1. The coating material 2 is filled into the gap 5 of the aggregate 4 with the smoothing tool 3 (rake or the like),
The surface is evenly applied. FIG. 1B shows a state where the application is completed. From the level of the asphalt surface, it can be seen that it hardly comes out above. The construction is now complete.

When the resin of the coating material 2 was a polysulfide-modified epoxy resin, the same operation was performed in the presence of water. The main component of the resin was FLEP 60 (trademark, manufactured by Toray Thiokol Co., Ltd.) as the main component, and the curing agent was mainly composed of the aliphatic polyamine, and the ratio of the main component / the curing agent was 3/1.

Water was sprayed on the asphalt pavement surface with a watering can or the like, and after reaching the wet, steady surface, spraying was stopped and the coating material 2 was applied immediately to complete the construction. 24
It was confirmed that the curing of the coating material 2 after the lapse of time and the adhesion to the asphalt pavement surface were equivalent to the absence of water.

FIG. 2 shows an example in which the mold member 6 is used. First, as shown in FIG. 2A, the mold member 6 is attached to the asphalt surface. From above, FIG. 2 (b)
The coating material 2 is applied as shown in FIG. As can be seen from this figure, it is better that the mold member 6 is thin in order to make the design clear. Finally, when the mold member 6 is peeled off, the coating material 2 remains only in the punched portion and forms a pattern (FIG. 2C). Since there are voids on the surface, the larger the pattern, the better.

Next, the effect of the aggregate used in the method of the present invention on various particle size distributions will be compared.

In the experiment, an air gap prevention test and a function recovery test were performed. As a test body (test piece), a water-permeable asphalt having a diameter of 10 cm and a height of 5 cm was used. The filling thickness of the coating material was 1.0 to 1.5 cm. In the test for preventing void clogging, 3 g of a void clogging substance having various particle sizes was sprayed thereon, watering was repeated until the surface did not change, and the specimen was dried every five times.
The water permeability was measured according to the water permeability test method of the water-permeable asphalt mixture of IS-A1218. The spraying of the void clogging material was repeated 30 times, and each time, the water permeability was measured and the change with time was observed.

The particle size distribution of the tested aggregate is as follows. However, the resin is a polysulfide-modified urethane resin (a urethane resin UP-395 manufactured by Asahi Denka Kogyo Co., Ltd. and “Thiocol” LP-3 manufactured by Toray Thiokol Co., Ltd., are 7/3).
And reacted at room temperature for 4 days at a ratio of
The resin ratio was 100/15. BE are examples of the present invention. A No filling. That is, the water-permeable asphalt itself used in the experiment.

B. (1) Aggregate having a particle size of 1.5 to 1.0 mm is 30% by weight (2) Aggregate having a particle size of less than 1.0 to 0.8mm is 20% by weight (3) Particle size is 0.8 (4) 10% by weight of aggregate having a particle size of less than 0.4 mm.

C. (1) Aggregate having a particle size of 1.0 to 0.8 mm is 40% by weight (2) Aggregate having a particle size of less than 0.8 to 0.4mm is 40% by weight (3) Particle size is 0.4 (4) 10% by weight of aggregate having a particle size of less than 0.2 to 0.1 mm.

D. (1) 35% by weight of aggregate having a particle size of 1.0 to 0.8 mm (2) 35% by weight of aggregate having a particle size of less than 0.8 to 0.4 mm (3) 0.4% of particle size (4) 15% by weight of aggregate having a particle size of less than 0.2 to 0.1 mm.

E. (1) Aggregate having a particle size of 1.0 to 0.8 mm is 25% by weight (2) Aggregate having a particle size of less than 0.8 to 0.4mm is 45% by weight (3) Particle size is 0.4 (4) 15% by weight of aggregate having a particle size of less than 0.2 to 0.1 mm.

F. (1) No aggregate having a particle size of 0.4 mm or more (2) 50% by weight of aggregate having a particle size of less than 0.4 to 0.2 mm (3) Particle size of less than 0.2 to 0.1 mm 50% by weight of aggregate.

The following proportions of the mixture were used as void clogging substances. This is similar to a clogged substance (sand, dust, etc.) on a general road.

(A) Particle size of 0.83 to 0.43 mm is 20% by weight (b) Particle size is less than 0.43 to 0.25mm and 20% by weight (c) Particle size is less than 0.25 to 0 (D) Particle size of less than 0.11 to 0.08 mm and 10% by weight. (E) Particle size of less than 0.08 mm and 20% by weight.

In addition, not only this mixture but also (b) and (e) alone were tested.

The function of preventing void clogging is easy to compare with the coefficient of water permeability. If the coefficient of water permeability decreases, it means that the space is clogged. However, since the absolute value of the permeability varies depending on the presence or absence of the coating material, the absolute value cannot be simply compared. Also, even if the coating material is filled, it is natural that the water permeability required by the drainage pavement is secured.
Therefore, 100 times the numerical value obtained by dividing the water permeability after the gap was closed by the water permeability before the gap was closed was used as an index of how much the space was closed, as the residual water permeability.

Table 1 shows the results.

[0078]

[Table 1]

From this table, it can be seen that, in the case where the pore clogging substance is very fine, in the case of (e), the coarser the aggregate of the coating material, the harder the pore clogging. That is, since the gap is large, the clogged material flows down together with the water. On the other hand, when a relatively large pore clogging substance is used (case (b)), it can be seen that conversely, the smaller the aggregate of the coating material, the more difficult the pore clogging. That is,
This is probably because the pore clogging material is so large that it does not clog in the aggregate gap. Then, in the case of a mixture close to the actual pore clogging substance, that is, a mixture that is coarser and finer than those described in (e) and (b) above is not filled at all.
It can be seen that a very small F has a large gap.

Next, the recovery of the function when the clogging material in Table 1 was a mixture was examined. The test specimen was thoroughly dispersed in water, and suctioned for the same time with a household vacuum cleaner. The residual water permeability after suction was measured. Table 2 shows the results.

[0081]

[Table 2]

In the example of A, almost no recovery has occurred. This is presumably because there is no thin coating layer, and the air gap is clogged in the deep layer of the asphalt layer and cannot be sucked. In the example of F, it is considered that the suction is difficult because the eyes are fine.

[0083]

According to the method of the present invention, there are the following advantages. (1) Since the present invention uses a special resin that cures even in the presence of water, it can be easily and firmly applied and fixed to a newly installed asphalt or concrete layer. (2) In addition, the work can be carried out immediately after spraying water during asphalt construction, so the construction period is significantly reduced. (3) In the case of concrete, it can be applied before it is completely hardened, and is sufficiently hardened and bonded, so that the construction period is also significantly reduced. (4) Even when cured in the presence of water, the cured resin in the coating material is normal and maintains strength, adhesive strength, and durability. (5) When fine aggregate is used as the aggregate, the amount of dust is extremely small and cleaning is easy. (6) It can be easily applied to existing paved roads. (7) The pattern can be easily provided. (8) Can be used for various passages.

[Brief description of the drawings]

FIG. 1 is a process sectional view showing an example of a construction method of the present invention.

FIG. 2 is a process sectional view showing another construction method of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Asphalt surface 2 Coating material 3 Coating tool 4 Asphalt aggregate 5 Void 6 Type member

 ────────────────────────────────────────────────── ─── Continued from the front page (72) Inventor Hideharu Nagata 9-17, Higashitakatsu-cho, Tennoji-ku, Osaka-shi, Osaka F-term (reference) 2D051 AG11 AH01 EA01 2D053 AA21 AD01 AD03 4D075 DB12 EA23 EB33 EB38 EC01 EC05 EC13

Claims (6)

[Claims] 1. A method for treating a surface of a passage, comprising applying an application material obtained by mixing a resin and an aggregate that cures even in the presence of moisture onto the passage. 2. The method according to claim 1, wherein the resin is a polysulfide-modified resin. 3. The method according to claim 2, wherein the paving material on the passage is asphalt and has already been hardened. 4. The method according to claim 2, wherein the paving material on the passage is asphalt, and a coating material obtained by mixing the polysulfide-modified resin and the aggregate is applied before the asphalt is cooled and hardened. Passage surface treatment method. 5. The method according to claim 2, wherein the paving material on the passage is concrete and has already been hardened. 6. The paving material of the passage is concrete,
3. The method according to claim 2, wherein a coating material obtained by mixing the polysulfide-modified resin and the aggregate is applied before the concrete is hardened.