JP4066051B2 - Concrete block with road marking material and manufacturing method thereof - Google Patents

Description

  The present invention melts a thermoplastic road marking material on the surface of a solid concrete block such as a curb made of concrete blocks beside the road and a curb of a median strip provided at the center of the road. Further, the present invention relates to a concrete block with a road marking material, which serves as a warning sign, and a method for manufacturing the same, for preventing collision with a curb such as a vehicle and notifying a driver who drives a vehicle at night, etc.

    Conventionally, in order to prevent a vehicle from colliding with the surface of a concrete block, which is a curbstone, a liquid fluorescent paint is applied or a reflective road sign seal is applied. Specifically, it is shown in FIG. 7 and FIG. FIG. 7 is a perspective view of a concrete block to which a reflective road sign seal is attached according to the conventional invention.

As shown in FIG. 7, on the surface of the median strip 8 provided at the center of the roadway 6, a reflection type reflection sheet 9 is attached that constitutes a road sign material and reflects the headlight of the vehicle. . However, the reflective sheet 9 was deteriorated due to changes in temperature or wind and rain, and had many peelings 9a, tears 9b, etc., so it was not durable and did not sufficiently function as a road marking material.

  FIG. 8 is a perspective view of a concrete block showing a case where a thermoplastic road sign material is melted directly on the surface of the concrete block according to the conventional invention and bubbles are formed on the surface. As shown in FIG. 8, simply melting the road sign sheet 11 on the surface of the concrete block 10 generates innumerable bubbles 11 a having different sizes, causing the road sign sheet 11 to peel off. Not only did the appearance deteriorate, but the commercial value of the concrete block was lost.

  The road sign material sheet used in the present invention is a highly reflective material used when forming a white line or a pedestrian crossing provided at the center of the roadway, from colored pigments, reflective materials such as glass beads, etc. A thermoplastic synthetic resin compound sheet comprising a fixing component and a synthetic resin that binds the reflective material such as the pigment and glass beads. The types of road marking materials include solvent-type road marking materials, melt-type road marking materials, and aqueous road marking materials.

The present invention uses a road sign sheet that is a melt-type road sign. The road sign sheet is a sheet-like material containing glass beads that are reflective materials based on the JIS standard (JIS K5665, Type 3 No. 1). Glass beads shall be JIS standard (JIS R3301 No. 1).

In the conventional invention, there is an invention called “reflective concrete manufacturing method” which is a manufacturing method of reflective concrete in which an appropriate amount of a binder such as cement and lime and glass beads having an appropriate grain size are added and kneaded with water. It was.
JP-A-54-71110

  However, since the conventional decorative concrete block has a smooth surface, the fluorescent paint or the like peels off in a short period of time, and the reflective road sign seal in the median strip causes peeling due to deterioration or the like. It is a very big problem that the road sign material does not have durability.

  When the road sign sheet is melted directly on the surface of the concrete block, the road sign is stuck, but when it melts, air bubbles enter between the surface of the concrete block and the road sign sheet, Since the bubbles burst and the road sign sheet is torn, the entire road sign sheet is easily peeled off, loses its value as a product, and is very expensive.

  Further, in the case of the “reflective concrete manufacturing method” which is a conventional invention, the concrete is poured, before the concrete is dried and solidified, a required portion of the outer peripheral surface, a binder such as cement and lime, and a particle size of 0.3 to 1 Since an appropriate amount of glass beads of about 0.0% is kneaded with water and the reflection layer body part is integrally formed, the installed curb block must be replaced. Time and cost are disadvantageous for the contractor.

  Therefore, the present invention does not stick fluorescent paint or reflective road sign stickers that are liable to peel or deteriorate, and does not generate bubbles even when the road sign sheet is directly melted on a concrete block with a smooth surface. A concrete block with a road marking material that serves as a mark for preventing the collision of a vehicle and informing a driver who drives a vehicle at night, etc., without impairing the commercial value of the concrete block, and without incurring a great deal of cost and effort. The object is to provide a manufacturing method thereof.

  In order to solve the above-mentioned problems, the present invention provides a concrete block provided with a large number of projections and depressions on the surface, and a fixing component made of a reflective material such as a colored pigment or glass beads on the surface of the concrete block. A thermoplastic synthetic resin compound sheet comprising a synthetic resin that binds a reflective material such as pigment and glass beads is melted and fixed, and a concrete block with a road marking material and a method for manufacturing the same are provided. .

  Since this invention is the above structure, the following effects are acquired. 1stly, the concrete block with a road sign material which is this invention, and its manufacturing method are the thermoplastic synthesis | combination which has reflectors, such as a pigment and a glass bead, on the surface of the concrete block which provided many protrusion-like unevenness | corrugations on the surface. Since the resin compound sheet is melted and fixed, it can be attached very easily. Also, the road sign material sheet melted on the surface of the concrete block does not deteriorate due to wind and rain, and is peeled off or torn, unlike the fluorescent paint or reflective reflective sheet that is the road sign material provided on the curb of the median strip. It is excellent in durability.

  Secondly, since no air bubbles are generated on the road marking material sheet on the surface of the concrete block, there is no peeling or tearing, so the cost of inspection and maintenance can be minimized, and high-signature road marking material is included. Concrete can be provided.

  Thirdly, the method of manufacturing a concrete block with a road sign material can be easily processed even for a concrete block that has already been installed as a curbstone, etc., using water-resistant sandpaper, If you use a portable sandblaster (registered trademark) that sprays a lot of granular sand at the same installation location, use a concrete block with a lot of protrusions and depressions on the surface. A road sign sheet can be easily melted and a concrete block with a road sign material according to the present invention can be provided.

  With the immediate demolding method, problems such as peeling of fluorescent paint, which is a road sign material provided on curbs, etc., and deterioration or peeling of reflective road sign seals provided on the surface of curb stones provided in the median strip This was realized by melting a concrete block having a large number of protrusions and depressions on the surface and a synthetic resin compound sheet made of a reflective material such as pigment or glass beads on the surface of the concrete block.

  Below, based on an accompanying drawing, the concrete block with a road sign material and its manufacturing method which are the present invention are explained in detail. FIG. 1 is a flowchart of a concrete block with a road sign material and a method for manufacturing the same according to the present invention, and FIG. 2 is a perspective view of the concrete block with a road sign material and a method for manufacturing the same according to the present invention.

As shown in FIG. 1, the method for manufacturing a concrete block with a road sign material according to the present invention fixes sandy particles made of sand or glass particles to a predetermined outer surface of a base material such as foamed polystyrene resin. A mold block is manufactured, and concrete is placed on a mold formed by transferring the mold mold to a synthetic resin, thereby producing a concrete block having a large number of protrusions and depressions on the surface. Heat comprising a concrete block installation step S1 installed at the curb portion between the roadway and the sidewalk, and a synthetic resin containing pigments, glass beads, etc. on the surface of the concrete block after passing through the concrete block installation step S1 A sheet cutting step of cutting a plastic road sign sheet with a cutter or scissors according to the length of the concrete block in the longitudinal direction or the short direction. 2, a sheet sticking step S3 in which the glass bead side faces upward on the surface of the road sign sheet cut by the sheet cutting step S2, and the surface of the concrete block is placed by the sheet sticking step S3. The road sign material sheet affixed to the top is covered with a heating device such as a burner, and the melted road sign material sheet is melted into the unevenness of the melted portion of the surface of the concrete block, and is subjected to a melting step S4 and a melting step S4. The road sign sheet adhered to the surface of the concrete block is naturally dried or dried with a mechanical device or the like, and the drying / cooling step S5 for cooling, and the road sign material sheet is fixed to the concrete block through the drying / cooling step S5. Completion S6.

That is, the completed concrete block is a concrete block 1 with a road sign material according to the present invention, a concrete block having protrusions on its surface, and a synthetic block containing pigment, glass beads, etc. on the surface of the concrete block. A thermoplastic road sign sheet made of a resin is melted. Next, the detail of the Example of each process from the said concrete block S1 to completion S6 is demonstrated.

  FIG. 2 shows an example of a concrete block with a road sign material and its manufacturing method 1. (1) to (4) are based on each step from the concrete block installation step S1 to the completion S6. (1) is an embodiment based on the concrete block installation step S1 shown in FIG. As shown in (1), the main body 2a of the concrete block 2 includes an upper surface 2c that is a part of the surface, a left end portion of the front surface 2d, a right end portion, and a part of the left side surface 2e. Is provided. Since the melting part 2b has irregularities on the surface, it is a mechanism for improving the meltability of the road sign sheet. In addition, the range which provides the fusion | melting part 2b does not limit the whole surface of the concrete block 2, and a part.

  A method of providing fine irregularities on the melted portion 2b on the surface of the concrete block 2 is to manufacture a mold master by fixing sandy particles made of sand or glass particles on a predetermined outer surface of a base material such as a polystyrene resin. A mold completed by a method for producing a mold for a non-slip decorative concrete product (described in Japanese Patent Application No. 2002-250199) that can be transferred by transferring the mold master to an appropriate synthetic resin is used.

The concrete block 2 used in the present invention is manufactured by placing concrete in the mold. (Hereinafter, the concrete block used in the present invention is referred to as the concrete block 2 manufactured by the immediate demolding method.) Then, the surface of the concrete block 2 for curb manufactured by the immediate demolding method melts the projections and depressions. A large number of portions 2b are provided, and the concrete block 2 is excellent in melting.

  In addition, it is preferable that the height of the protrusion-like unevenness of the melted part 2b is about ± 1 mm from the base portion of the concrete block having a smooth surface, and the unevenness is also irregularly arranged. Further, the melting part 2b is provided with a depression of 2 mm or more in advance in consideration of the thickness of a road sign sheet described later in (2) and thereafter, and the depression of the projection block is provided in the depression to increase the height of the concrete block base material. You may align.

For concrete blocks that have already been installed as curbs, in the case of manual work, water-resistant sandpaper may be used at the installation location to provide protrusions and depressions on the melted part 2b. A portable sand blaster (registered trademark) that performs edging or the like by spraying a large amount of granular sand at a place may be used, and protrusions and depressions may be provided on the melting portion 2b. The water-resistant sandpaper is a commercially available product having an eye roughness of 0.1 mm to 1.0 mm.

Next, (2) is an embodiment of the sheet cutting step S2 and the sheet sticking step S3 shown in FIG.
As shown in (2), the road sign sheet 3 is a roll-shaped member containing glass beads that are reflected on the surface of the vehicle 3d by the surface of the vehicle 3d. The side that is in close contact with the concrete block 2 is the back surface 3e. A detailed description of the components of the road sign sheet will be given in FIG. Moreover, the road sign material sheet 3 is cut into an appropriate length according to the length of the concrete block 2 using a commercially available scissors, a cutter or the like, and used as the road sign material sheet 3a.

After the sheet cutting step S2 is completed, the sheet sticking step S3 is completed by placing a rectangular sheet on the upper surface of the concrete block 2 from the upper surface 2c of the concrete block 2 to the front surface 2d.

(3) is an embodiment based on a melting step S4 for melting a road sign sheet on a concrete block and a drying / cooling step S5, which is a step after the melting step S4, as shown in FIG. is there. As shown from the above (2) to (3), the road sign sheet 3 is a cassette cylinder type by applying heat from a nozzle 4e provided at the tip of a portable burner 4 or the like, This is a mechanism in which the road sign sheet 3b is melted along the projections and depressions provided in large numbers in the melting portion 2b provided in advance on the surface of the concrete block 2.

The melted road sign sheet 3b is provided so as to cover the entire melted part 2b of the main body 2a of the concrete block 2. In addition, when melting must be performed at a temperature of 5 ° C. or less as in winter, it is preferable to preheat the surface of the concrete block 2 and raise the temperature of the surface of the concrete block 2 in advance.

  The burner 4 is a commercial product, and a handy type burner having a nozzle 4e at the tip and a cassette-type cylinder as a heat source is used. The burner 4 may have a calorific value of 1500 kC to 1900 ° C and a calorific value of 3000 kcal or more.

For the start of the blister, the distance from the nozzle 4e at the tip of the burner 4 to the road sign sheet 3b is about 30 cm, and the surface temperature of the road sign sheet 3b is kept at 80 ° C. or higher, preferably 100 ° C. to 120 ° C. In this way, it begins to blow as it reciprocates from top to bottom along the right end from the left end of the road sign sheet 3b.

First, the burner 4 is set to low heat, and the cut road sign material sheet 3a is applied to the concrete block 2 shown in (2), and then the road sign material is set on high fire like the concrete block 2 shown in (3). What is necessary is just to heat so that the whole sheet | seat 3b may become uniform temperature. The time required for a series of burrs is 3 to 5 minutes.

  At the end of the fogging, the surface of the road sign material sheet 3b melts along the surface of the road sign material sheet 3b, that is, along the many projections and depressions provided in the melting part 2b of the concrete block 2, and the road sign material sheet 3b However, it is only necessary that the projections have irregularities. In the present invention, by providing a large number of projections and depressions on the surface of the concrete block 2 in advance, bubbles are completely prevented from being generated in the road sign sheet 3b, which is a failure of fogging.

  In addition, the handy type burner 4 as a heat source can use a plurality of the burners in order to melt the road sign sheet in a shorter time. The handy type burner 4 may be any other burner that can be connected to a bomb-type propane gas or natural gas. In the case of the cylinder type, the calorific value of 4000 kcal to 5000 kcal is sufficient.

  Further, in order to melt the road sign sheet 3b with the concrete block 2 and improve the adhesiveness, a primer or the like which is a base treatment material can be used on the surface of the concrete block 2. The primer used in the present invention is a viscous paint that can be used for both concrete and asphalt, and is a normal temperature, dry type paint mainly composed of an aqueous acrylic resin emulsion.

When the primer is applied, it is desirable to use a commercially available brush or roller, and to remove in advance dust, dirt, oil, moisture, etc. on the surface of the concrete block. The coating amount of the primer is suitably used in the range of 0.15 kg / ^{m 2} of 0.2 kg / ^{m 2.}

(4) is an example of the drying / cooling step S5 and the completion S6 of FIG. The surface 3d of the road sign sheet 3c that has been melted on the surface of the concrete block 2 is naturally dried and fixed as it is, so that the drying / cooling step S5 is performed. The dry time is 120 minutes for summer and 140 minutes or more for winter.

When the drying / cooling step S5 is performed, dust such as dust is prevented from being mixed. When the surface 3d of the road sign material sheet 3c is completely fixed, the concrete block 1a with the road sign material is completed S6. Next, in FIGS. 3 and 4, the details of the second embodiment and the third embodiment of the concrete block with road sign material will be described.

  FIG. 3 shows a second embodiment of a concrete block with a road sign material according to the present invention. FIG. 4 is a third embodiment of a concrete block with a road sign material according to the present invention.

  As shown in FIG. 3, a concrete block 1b with a road sign material according to the present invention has a curb provided at the boundary between a roadway 6 and a sidewalk 7, that is, an inclined upper surface 2g of a substantially trapezoidal concrete block 2f. This is a case where the marker sheet 3c is melted. Moreover, the concrete block 1b with a road sign material can be melted not only on the upper surface 2g of the substantially trapezoidal concrete block 2f but also on the entire surface of the concrete block 2f.

The substantially rectangular concrete block 2h provided continuously with the concrete block 1b with the road sign material is also applied to the whole or part of the surface of the concrete block 2h in the same manner as the concrete block 1b. 3c can be melted.

That is, not only when the road sign sheet 3c is already melted as in the concrete block 1b with the road sign material according to the present invention, but also with the existing curb, the substantially trapezoidal concrete block 2f or the rectangular concrete block 2h. The road sign sheet 3c can be melted and applied to the surface of the vehicle on the spot. The road sign sheet 3 c is the same material as the center line 5 provided in the center of the roadway 6.

In FIG. 4, instead of the rectangular road sign concrete block 2 h shown in FIG. 3, the road sign material sheet 3 c is melted on a part or the whole of the surface of the substantially trapezoidal concrete block 2 f so that the concrete block 2 f is It is a perspective view of 3rd Example at the time of arrange | positioning over multiple. Therefore, the usage-amount of the rectangular concrete block 2h shown in FIG. 3 can be reduced significantly.

And even when the vehicle enters the sidewalk 7 from the roadway 6 at night as indicated by the arrow A shown in the upper right of FIG. 4, the road sign sheet 3f contains glass beads as a reflective material. The function of can be demonstrated. Next, in FIG. 5 and FIG. 6, details of materials and materials used at the time of manufacturing the concrete block with road sign material of the first embodiment, the second embodiment or the third embodiment will be described.

  FIG. 5 is a perspective view of a road sign material used when manufacturing a concrete block with a road sign material according to the present invention, and FIG. 6 is a perspective view of a burner used when manufacturing a concrete block with a road sign material according to the present invention.

  As shown in FIG. 5, the road sign sheet 3 used in the present invention is a thermoplastic synthetic resin compound sheet in the form of a roll and containing countless glass beads on the surface. The performance of the road sign sheet 3 used in the present invention is based on JIS standard JIS-K-5665, with a specific gravity of 1.8 to 2.3, preferably 1.8, and a softening point of 80 ° C. or higher, preferably 104. ˜105 ° C., yellowness 0 to +0.1, preferably 0.08, 45 ° 0 ° diffuse reflectance, wear resistance 200 mg or less / 100 times, 36 to 37, alkaline resistance calcium hydroxide saturation The road sign sheet 4 that has passed 18 hours of the solution is used.

Further, as other performances of the road sign sheet 3, 1.8 is applied when the heating residue is 99 or more, 17% when the glass bead content is 15 to 18%, and ultraviolet carbon is applied in the accelerated weathering test. In this case, the road sign sheet 4 having the performance of hardly causing discoloration, cracking, peeling, and wrinkles is used.

The length and thickness of the road sign sheet 4 is from 15 cm to 45 cm in width, the thickness is 1.2 mm ± 0.2 mm, and the color of the road sign sheet 4 is white, yellow, red, blue, green, brown As such, coloring is not limited. In addition, durability has durability from 1 to 2 years or more after melting into a concrete block.

  In addition, as shown in FIG. 6, the handy type burner 4 is a commercial product, a torch part 4a having a nozzle 4e for injecting flame, a cylinder part 4b for supplying gas to the torch part 4a, and a torch It consists of a substantially concave connector 4c connected to the cylinder part 4b at the bottom of the part 4a. The heating power can be adjusted with a rotatable adjustment knob 4d provided on the back surface of the torch portion 4a.

  FIG. 9 is a left side view of a melting portion of a concrete block with a road marking material and a concrete block with a road marking material used in the manufacturing method thereof according to the present invention.

  As shown in FIG. 9, the concrete block 2 provided with a large number of protrusions and depressions on the surface can form protrusions and depressions having various vertical cross-sectional shapes in order to melt the road sign sheet. Specifically, in the order from the left, the concave and convex portions of the square shape 2i, which is a vertical cross-sectional shape in which square or rectangular dents are alternately provided, and the vertical cross-sectional shape in which triangles with pointed apexes are alternately provided at intervals. There are irregularities of a certain triangular shape 2j, and irregularities of a triangular pyramid shape 2k, which is a vertical cross-sectional shape in which triangular pyramids having rounded apexes are alternately provided at intervals.

In addition, the vertical cross-sectional shape of the concrete block 2 includes a concavo-convex shape of the symmetrical shape 2l, which is a longitudinal cross-sectional shape provided in a gentle wave shape, and a further continuous waveform by further subdividing the waveform of the symmetric shape 2l, which is a gentle wave shape. 2 m of irregularities having a vertical cross-sectional shape provided in the above, and irregularities of square shapes 2 i, triangles 2 j, irregularities of triangular pyramids 2 k, irregularities of symmetrical shape 2 l, irregularities of symmetrical shape 2 l, and ripples 2 m There is a concavo-convex shape of a deformed shape 2n, which is a longitudinal cross-sectional shape provided in a combination of a concavo-convex shape of a gentle wave shape 2k and a undulation shape of a ripple shape 2m.

A concrete block with a road sign material and a method for producing the same according to the present invention include a U-groove upper surface portion, a lid portion of the U-groove, or a lid having a square cross section, which is a concrete product used for sewers and the like. A road sign sheet can be melted on the surface of a cylindrical culvert.
Also, any concrete product can be applied as a mark for preventing the collision of vehicles such as vehicles and notifying the position of each concrete product by melting the road sign sheet on the left and right ends 5-10 cm in width. .

It is a flowchart of the concrete block with a road sign material which is this invention, and its manufacturing method. It is the perspective view which implemented the concrete block with a road sign material which is this invention, and its manufacturing method. It is 2nd Example of the concrete block with a road sign material which is this invention. It is 3rd Example of the concrete block with a road sign material which is this invention. It is a perspective view of the road sign material used at the time of manufacture of the concrete block with a road sign material which is this invention. It is a perspective view of the burner used at the time of manufacture of the concrete block with a road sign material which is this invention. It is a perspective view of the concrete block which affixed the reflective road sign sticker in the conventional invention. FIG. 8 is a perspective view of a concrete block showing a case where a road marking material is melted directly on the surface of a decorative concrete block and bubbles are formed on the surface according to the conventional invention. FIG. 9 is a left side view of a melting portion of a concrete block with a road marking material and a concrete block with a road marking material used in the manufacturing method thereof according to the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Concrete block with road sign material and its manufacturing method 1a Concrete block with road sign material 2 Concrete block 2a Main body 2b Melting part 2c Upper surface 2d Front surface 2e Left side surface 2f Concrete block 2g Upper surface 2h Concrete block 2i Square shape 2j Triangle shape 2k Triangular pyramid 2l Symmetrical shape 2m Rippled 2n Deformed shape 3 Road sign sheet 3a Road sign sheet 3b Road sign sheet 3c Road sign sheet 3d Surface 3e Back 3f Road sign sheet 4 Burner 4a Torch part 4b Cylinder part 4c 4d Adjustment knob 4e Nozzle 5 Center line 6 Roadway 7 Sidewalk 8 Median strip 9 Reflective sheet 9a Peel 9b Break 10 Concrete block 11 Road sign sheet 11a Bubble S1 Concrete block Installation process S2 sheet cutting process S3 sheet sticking step S4 melting step S5 drying and cooling step S6 completed

Claims (2)

An installation process for installing a concrete block having projection-like fine irregularities on the surface, and a road sign sheet made of a thermoplastic synthetic resin containing a colorant and a reflective material, the longitudinal direction or the short direction of the concrete block A sheet cutting process for cutting the sheet according to the length of the sheet, a sheet affixing process for placing the cut road sign sheet on the surface of the concrete block with the surface facing upward, and heating the affixed road sign sheet with a burner And a melting process that melts along the unevenness of the concrete block so as to prevent bubbles from entering, and a drying / cooling process that cools and dries the adhered road sign sheet and adheres it to the surface of the concrete block. A method for producing a concrete block with a road sign material. A concrete block with a road sign material manufactured by the method according to claim 1.

Images