JPH06294104A - Pavement with water-permeable thin resin layer and construction thereof - Google Patents

Abstract

PURPOSE:To form a slip prevention layer a while keeping water-permeability, by scattering fine aggregates on a paving surface of thin resin layer formed on the substrate and sticking them through the high molecular resin. CONSTITUTION:A thin resin layer 2 having a specified thickness is paved on a water-permeable concrete bed 3 constituting the base-course When applying it, after liquid epoxy resin is mixed with paving aggregates 1 so that the epoxy resin covers uniformly the surface of aggregates 1, the mixture is spread on the paving substrate base-course 3 and the surface is finished by means of a trowel or the like so that adjacent aggregates are firmly stuck to each other through the solidified epoxy film. And fine silica sand 5 is scattered on the pavement 2a of thin resin pavement layer 2 formed in such a way so as to cover the surface and stuck thereto, in order to prevent slipping in rain. When necessary, reflecting granules are mixed therewith so that front light of a car is reflected by the granules at night.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-permeable resin thin layer pavement and a method for constructing the same, and is particularly paved on a base layer such as water-permeable concrete pavement to maintain high water permeability and prevent slippage on the surface. The present invention relates to a water-permeable resin thin layer pavement having a layer formed therein and a method for constructing the pavement.

[0002]

2. Description of the Related Art In recent years, various pavements having water permeability have been developed in urban areas for the purpose of returning rainwater to nature. Among them, the water-permeable resin pavement has come to be often used for pavement of pedestrian roads that emphasizes landscape such as promenades and park plazas. This water-permeable resin pavement is laid on a base pavement material such as water-permeable concrete as a base layer with a polymer resin such as epoxy resin as a binder to spread a single particle size aggregate to a predetermined thickness and to solidify the resin to form a surface layer. It is a special pavement that has water permeability. This kind of water-permeable resin pavement is often constructed in a place where balance with the landscape and surrounding colors is important, and natural gravel with an appropriate color and uniform particle size is used as the aggregate used. There are many. However, since these natural pebbles have a round grain shape and a smooth aggregate surface and the surface is covered with an epoxy resin or the like, there is a problem in that when they are paved on a sidewalk or the like, they tend to slip when raining or the like.

[0003] Therefore, as a technique capable of solving such a problem, a cavern around a paving aggregate (hereinafter referred to as a large diameter aggregate) such as crushed stone which constitutes a water-permeable resin paving through a polymer resin is used. A water-permeable pavement has also been proposed in which small-diameter aggregates such as sand are adhered to increase the adhesive strength between large-diameter aggregates that make up the pavement, and at the same time exhibit an anti-slip effect on the pavement surface No. 4-67525). In addition, this type of water-permeable resin pavement is handled as a resin mortar water-permeable pavement in the "Mortar Construction Method Resin-based Thin Layer Pavement Manual" by the Japan Resin Pavement Association, and various technical standardization of its composition and construction method has been advanced. ing. In the same book, "mortar" is defined as a mortar-like mixture obtained by preliminarily mixing aggregates such as crushed stone, silica sand, and natural stone with a polymer resin such as epoxy resin as a binder in a predetermined composition. is doing.

On the other hand, even in the conventional existing pavement, a neat anti-slip method and the like have been standardized by the Japan Pavement Association as a pavement surface treatment method for the purpose of preventing slippage.

[0005]

However, a water-permeable resin pavement in which the above-mentioned small-diameter aggregate is mixed with a polymer resin to adhere to the periphery of the large-diameter aggregate to improve the adhesive strength between the aggregates, In the resin mortar water-permeable pavement in the above-mentioned procedure,
A pavement material is produced by mixing a polymer resin such as a liquid epoxy resin and an aggregate having a different particle size with a mixer or the like. At this time, in the water-permeable resin pavement described in the above publication, at the time of mixing, the polymer resin is first attached to the periphery of the large-diameter aggregate, and then the small-diameter aggregate is attached to the polymer resin. However, the viscosity of the polymer resin adhering to the large-diameter aggregate at this time is in a high state, and unless the setting method of the small-diameter aggregate, the type of mixer used and the aggregate mixing time are set appropriately, the small-diameter aggregate is However, there is a problem in that a uniform material cannot be provided because it cannot be uniformly attached to the entire circumference of the large-diameter aggregate.

In the water-permeable resin pavement described in the above-mentioned publication and the resin mortar water-permeable pavement described in the procedure, aggregates having different particle diameters are mixed in advance as a leveling material. Therefore, as shown in FIG. 6A, the pavement material laid on the base pavement material is in a state in which the small-diameter aggregate 50 is attached to the periphery of the large-diameter aggregate 51 through the polymer resin 52. The small-diameter aggregate 50 enters into the coating film of the resin 52, so that the film thickness of the polymer resin 52 is increased. Since it is laid and leveled in this state and ironed,
There is a possibility that the polymer resin 52 adhering to the surroundings narrows the gaps 54 between the large-diameter aggregates 51 and blocks passages such as rainwater, and the water permeability of the water permeable pavement is reduced. .

Further, in these water-permeable resin pavements, as shown in FIG. 6B, a large-diameter aggregate 51 to which a small-diameter aggregate 50 is attached via a polymer resin 52 is laid and leveled on the pavement surface. Later, since the surface is finished with a trowel 53 or the like, the small diameter aggregate 50 adhering to the pavement surface is scraped off, or the large diameter aggregate 5 is removed.
There is also a problem that it is pushed into the gap between the two to cause clogging, and both the anti-slip effect and the water permeability of the pavement surface are reduced.

On the other hand, in the neat type anti-slip method in which slip prevention is carried out afterward, a primer layer is formed on the surface of an ordinary base pavement surface, and an epoxy resin binder is evenly formed on the road surface at a predetermined thickness. An adhesive layer is formed by coating, and a single hard aggregate of 1.2 to 3.2 mm is sprayed on the adhesive layer, and a part of the aggregate is embedded in the adhesive layer.
It is designed to form a non-slip layer. However, when this method is applied to the above-mentioned water-permeable resin pavement, the formed adhesive layer blocks the voids between the aggregates on the surface of the water-permeable pavement, and there is a possibility that sufficient water permeability cannot be obtained.

Further, since the polymer resin coating formed around the large-diameter aggregate has a glossy surface, the resin pavement is characterized in that the pavement surface has gloss. Therefore, when it is desired to have a matte effect from the viewpoint of harmony with the surroundings, the above-described method of mixing and adhering the small-diameter aggregate can be used. However,
When the mat is partially frosted, there is a complication that it is necessary to replace the unmixed and mixed small-diameter aggregates one by one and spread them.

Therefore, the object of the present invention is to solve the above-mentioned problems of the prior art, and to easily and efficiently prevent the surface of a water-permeable resin thin layer pavement from slipping and to have a matting effect. It is an object of the present invention to provide a water-permeable resin thin layer pavement and a construction method of the pavement.

[0011]

In order to achieve the above object, a first aspect of the present invention is to spread a predetermined single grain size aggregate having a polymer resin coating on the surface thereof on a base pavement material and spread it to a predetermined thickness. In a water-permeable resin thin layer pavement in which a resin thin layer pavement is paved, in the resin thin layer pavement, powdery aggregate is dispersed and adhered to an upper surface of the resin thin layer pavement in a state where the polymer resin is uncured. It is characterized in that a non-slip layer is formed on it.

The second aspect of the present invention is, as a construction method for carrying out the first aspect of the present invention, mixing a predetermined single grain size aggregate and a polymer resin in a liquid state to form a polymer on the surface of the single grain size aggregate. A resin coating is formed, the single-grain aggregate is laid on the surface of the base pavement material to a predetermined thickness, and the thin resin layer pavement is paved by curing and adhesion of the polymer resin coating, and the polymer resin coating is uncured. Among them, the powder-granular aggregate is sprinkled and adhered on the upper surface of the resin thin layer pavement to form a non-slip layer on the upper surface.

Further, in the first invention, the powdery aggregate is powdery silica sand, a mixture of powdery silica sand and reflective particles, or powdery silica sand and fluorescent particles. It is preferably a mixture of

[0014]

According to the first aspect of the present invention, while the polymer resin on the surface of the resin thin layer pavement is in an uncured state, the granular aggregate is sprinkled and adhered through the polymer resin, Since the anti-slip layer is formed, the anti-slip effect can be exhibited while maintaining high water permeability as the water-permeable resin pavement.

According to a second aspect of the present invention, a predetermined single grain size aggregate and a liquid polymer resin are mixed to form a polymer resin coating on the surface of the single grain size aggregate. Material is spread on the surface of the base pavement material to a predetermined thickness and the resin thin film pavement is paved by curing and adhering the polymer resin coating, and while the polymer resin coating is uncured, the powder-granular aggregate is applied to the resin. Since it was made to scatter and adhere to the upper surface of the thin layer pavement, and the anti-slip layer was formed on the upper surface, there is no need for construction management to evenly mix the granular aggregate, and the water permeable thin layer pavement part High water permeability can be maintained without clogging, and the anti-slip material on the pavement surface will not fall off during construction, so high anti-slip performance can be obtained.

Further, in the first aspect of the present invention, the anti-slip effect and the reflection effect can be obtained by using a mixture of powdered silica sand and reflective particles or a mixture of powdered silica sand and fluorescent particles. It is possible to secure safety while walking due to the light emission effect.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a water-permeable resin thin layer pavement and a construction method of the pavement according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a partial cross-sectional view showing an enlarged part of a water-permeable resin thin layer pavement according to the present invention. In the figure, in this embodiment, the pavement aggregate 1 is made of single-grain natural stone gravel. Since the natural stone gravel has various color tones and patterns depending on the place of origin and material, the type may be appropriately determined from the viewpoint of harmony with the surroundings. The particle size of the aggregate to be used is preferably 5 mm, which is the maximum particle size in view of the workability when paved. In addition to so-called river gravel, JIS A 5
It is also possible to use the crushed stone for roads specified in 001. In this case, the crushed stone No. 7 class corresponds to the above-mentioned natural stone gravel, but if the layer thickness of the resin thin layer pavement 2 is set to be thick as the surface layer of the water permeable resin thin layer pavement, the particle size is larger than that. May be used.

In this embodiment, the resin thin layer pavement 2 is paved with a layer thickness of about 10 mm on the water-permeable concrete layer (layer thickness 80 mm) constituting the base layer 3. This resin thin layer pavement 2
On the surface of the paving aggregate 1 used in the above, a coating 4 of an epoxy resin, which is a polymer resin, is formed with a uniform thickness. The epoxy resin coating 4 is formed on the base layer after the liquid epoxy resin and the paving aggregate 1 are kneaded with a mixer so that the epoxy resin uniformly covers the surface of the paving aggregate 1 as described later. A surface finish is applied by a trowel presser or the like so that adjacent aggregates are firmly adhered to each other through an epoxy resin coating which is spread on a certain base pavement material to a predetermined thickness and solidified.

Further, the pavement 2a of the resin thin layer pavement 2 is adhered with powdered silica sand 5 scattered so as to cover the surface thereof. The silica sand 5 in the form of powder is attached to the epoxy resin coating 4 on the surface of the paving aggregate 1 so that a part of the silica sand 5 is embedded in the surface of the paving aggregate 1 when the epoxy resin itself is hardened. The epoxy resin coating surface 4 is integrally fixed via the epoxy resin, and the epoxy resin coating surface 4 is not directly exposed to the paving surface 2a, and a paving surface covered with silica sand 5 is formed. The pavement surface 2a has a high anti-slip effect and the gloss peculiar to the epoxy resin is reduced, so that a calm atmosphere can be created in terms of landscape. Although silica sand No. 7 according to the JIS standard is used as the granular aggregate in this embodiment, it goes without saying that other types of silica sand and different particle size distributions can also be used.

A pavement structure suitable for constructing the water-permeable resin thin layer pavement shown in this embodiment will be briefly described with reference to FIG. FIG. 2 shows an example of a cross section of a pavement structure for constructing a water-permeable resin thin layer pavement according to the present invention. A crusher run with a name of C-40 with a particle size range of 0 to 40 mm is used for the roadbed 6, and the layer thickness varies depending on the applications such as the pavement plaza and the parking lot.
It is set to 0 to 150 mm. For the base layer 3 which is the upper layer of the roadbed 6, it is preferable to use a water-permeable concrete known under the trade name Permiacon or the like in order to ensure water permeability of the pavement. The water-permeable concrete base layer has better adhesiveness to the resin thin-layer pavement 2 and water permeability than the asphalt base layer, and it is possible to minimize water storage in the resin thin-layer pavement 2 and Combined with the surface friction of the formed anti-slip layer, it is effective in preventing slippage during rainfall. A resin thin layer pavement as the surface layer 2 is constructed on the upper surface of the water-permeable concrete forming the base layer 3 (see FIG. 1). On the surface of the resin thin layer pavement 2, silica sand 5 as a granular aggregate is fixed via an epoxy resin coating 4. Therefore, an anti-slip effect can be obtained on the pavement surface 2a. Moreover, the pavement surface 2a is matte-finished by the silica sand 5 covering the pavement surface 2a. Further, since the surface of the epoxy resin coating 4 is covered with the silica sand 5 as a secondary effect of the silica sand 5 being sprinkled and attached to the paved surface 2a, it can be expected to prevent yellowing deterioration of the epoxy resin due to ultraviolet rays. .

Next, a modified example of the powder-granular aggregate dispersed on the surface of the water-permeable resin thin layer pavement will be described with reference to FIG. FIG. 1A shows an example in which the silica sand 5 shown in FIG. 1 is mixed with the reflective granules 10 obtained by crushing glass beads or glass pieces to have a predetermined particle diameter to form a granular aggregate. It is a thing. As shown in the figure, since the mixture of silica sand 5 and the reflective particles 10 such as glass beads is sprayed and fixed on the surface of the resin thin layer pavement 2, the water permeable resin thin layer pavement according to the present invention is A reflective non-skid, water-permeable pavement that can reflect the headlights of automobiles at night can be provided. Other examples of modification of the reflective granular material 10 include pearl pigment and silicon carbide particles. The pearl pigment is a granular material in which the surface of natural mica is thinly coated with a titanium oxide layer, and the light incident on this granular material interferes and is reflected, resulting in a soft and deep luster. Compared with ordinary pigments, it has a softer shade and gives a high-grade color. If silicon carbide particles with a large degree of aggregate particle size due to the degree of reflectance are used, a crisp and visually distinct reflected light can be obtained due to the reflection of light during the day or at night. When used, it produces a glittering, reflected light that shines finely into a surface.

FIG. 2B shows a modified example in which the self-luminous fluorescent fine particle material 11 is mixed with the silica sand 5 to form a granular aggregate. As a concrete example of this self-luminous fluorescent fine particle material, the fluorescent material is uniformly mixed with an epoxy resin,
It is known that the resin is solidified and crushed to a predetermined particle size. This kind of fluorescent fine particle material absorbs ultraviolet rays during the day and emits the stored energy at night. The fluorescent material used has a good affinity with the epoxy resin, is chemically stable even when mixed in the resin, and can retain its long-term light emitting property. Various applications such as outdoor taxiways at night can be realized by applying powder-aggregate, which is a mixture of these, on the pavement surface. The weight ratio of silica to sand in any of the granular aggregates made of any mixture can be changed depending on its use, but in order to maintain the anti-slip effect as the pavement surface, the weight mixing ratio is generally 10 to 50%.
Is preferred.

FIG. 4 is a schematic cross-sectional view showing an example in which masking is performed at the time of spraying powder-grain aggregate such as silica sand on the pavement surface. A masking plate 20 having a predetermined shape as shown in the figure is laid on the pavement surface 2a on which it is not desired to attach the powdery grain aggregate as an example of silica sand 5, and the powdery grain aggregate is sprayed over the entire pavement surface. Just do it. As described above, in the conventional water-permeable resin thin layer pavement, it is difficult to perform partial non-slip pavement such as so-called zebra pavement, whereas in the present invention, a free planar anti-slip surface is easily formed on the pavement surface. can do.

Next, the procedure for constructing the water-permeable resin thin layer pavement according to the present invention will be described with reference to FIGS. 2 and 5. First, the surface treatment of the base layer 3, which is a base paving material, is performed. As the surface treatment, the leitance, water, dust and oil remaining on the surface are removed. At this time, appropriate masking or a formwork is applied to a portion where the thin layer paving aggregate 1 is not applied (step 10). Main agent and curing agent of polymer resin as binder
Accurately weigh the weight of paving aggregate and powder aggregate. In the present embodiment, the weight ratio of the aggregates used is set so that the paving aggregate / powder-grain aggregate ratio is about 14. It is preferable to set this weight ratio appropriately according to the required anti-slip effect.

An epoxy resin is generally used as the polymer resin, but a catalyst-curable acrylic resin is suitable when the curing temperature in winter is low, and a urethane resin is used when a pavement layer having high elasticity is applied. It is also possible to use. The mixing of the main component of the polymer resin and the curing agent is performed with a hand mixer in a predetermined container. Further, the kneading of the polymer resin and the paving aggregate after the mixing is carried out by a forced kneading mixer or the like to form a polymer resin film uniformly around the paving aggregate (step 20). Next, the paving aggregate covered with the polymer resin is spread with a rake or a scoop on the surface of the base layer so as to have a uniform thickness. Further, the surface of the spread aggregate is smoothed with a trowel finish. When it is desired to construct a pavement surface that is solid to some extent, surface finishing may be performed with a power trowell or the like. It is also preferable to form joints at predetermined intervals as needed (step 30). Predetermined masking is performed before the polymer resin coating on the paving surface of the paving aggregate is cured, and the granular aggregate is mechanically sprayed by a spreader or the like so that the paving surface has a uniform spraying amount (step 40). , 50). After spraying, the state where the influence of rainfall or the like can be avoided is maintained, and curing is performed for a curing time determined in relation to the pavement surface temperature (step 60). As described above, the machine for spraying the powder / aggregate described in the embodiment is not limited in its model, and can run on the uncured pavement surface and can evenly spray the powder / granular material. Many spreaders can be used. Needless to say, it is possible to select various types of mixers for kneading aggregates and spreading and leveling machines that can properly handle paving materials.

[0026]

As is apparent from the above description, according to the present invention, while maintaining the water permeability of the water-permeable resin thin layer pavement,
An anti-slip structure can be easily applied to the pavement surface, and durability can be expected due to the adhesive effect of the anti-slip layer made of polymer resin.

[Brief description of drawings]

FIG. 1 is a partially enlarged sectional view showing an embodiment of a water-permeable resin thin layer pavement according to the first invention.

FIG. 2 is a partial cross-sectional view showing an example of a pavement structure for applying the water-permeable resin thin layer pavement shown in FIG.

FIG. 3 is a partially enlarged view showing a modified example of the powdery grain aggregate used in the first invention.

FIG. 4 is a cross-sectional view showing an example of masking work in the method for constructing a water-permeable resin thin layer pavement according to the second invention.

FIG. 5 is a work flow diagram showing an example of a construction procedure of a construction method of a water-permeable resin thin layer pavement according to a second invention.

FIG. 6 is a partially enlarged cross-sectional view showing an example of a conventional water-permeable resin thin layer pavement.

[Explanation of symbols]

 1 Pavement aggregate 2 Surface layer (resin thin layer pavement) 3 Base layer (water-permeable concrete) 4 Polymer resin (epoxy resin) 5 Powder-grain aggregate (silica sand)

Claims (5)

[Claims] 1. A water-permeable resin thin-layer pavement in which a single-granular aggregate having a polymer resin coating formed on its surface is spread on a base pavement material to a predetermined thickness, and a resin thin-layer pavement is paved. In the layered pavement, a water-permeable resin thin layer, characterized in that the polymer resin is in an uncured state, and a powder aggregate is sprinkled and adhered to the upper surface of the resin thin layer pavement to form a non-slip layer on the upper surface. pavement. 2. A single-granular aggregate and a liquid polymer resin are mixed to form a polymer resin coating on the surface of the single-granular aggregate, and the single-granular aggregate has a predetermined thickness on the surface of the base pavement material. And paving the resin thin layer pavement by curing and adhering the polymer resin coating, and while the polymer resin coating is uncured, apply the powder aggregate to the upper surface of the resin thin layer pavement. ,
A construction method of a water-permeable resin thin layer pavement, characterized in that an anti-slip layer is formed on the upper surface. 3. The water-permeable resin thin layer pavement according to claim 1, wherein the powdery aggregate is powdery silica sand. 4. The water-permeable resin thin-layer pavement according to claim 1, wherein the powder-granular aggregate is a mixture of powder-granular silica sand and reflective particles. 5. The water-permeable resin thin layer pavement according to claim 1, wherein the powdery aggregate is a mixture of powdery silica sand and fluorescent particles.