KR100541520B1 - The construction method using composition for repairing cracks in pavement - Google Patents

Abstract

The present invention relates to a construction method using a goose-based composition for cracking and joint repair on the pavement, the object is to construct a goose-based composition having excellent physical properties on the pavement crack and joint, to prevent the progress of cracking, It is to provide a construction method using a goose-based composition for repairing cracks and joints on the pavement that can extend the life of the road, reduce road management costs, and facilitate vehicle communication.

The present invention is to cut the construction site to a predetermined depth and width, cutting the construction site to remove the foreign matter of the cutting site; Crack and joint high pressure heat treatment for high pressure heat treatment of the cut portion; Asphalt 20-40wt%, Special Polymer Plastic 5-15wt%, Special Fiber Filler 20-30wt%, Softener 10-30wt%, Tire Powder 5-20wt%, Special Minerals 10-20wt%, UV Stabilizer 0.1-3wt%, Oxidation Dissolving and heating a goose-based composition which maintains the goose-based composition consisting of 0.1 to 3 wt% of an inhibitor at 150 to 180 ° C; A goose-based composition infiltration step of penetrating the heated goose-based composition into cracks and joints by means of an installation device; A goose-based composition applying step of applying the goose-based composition by a shoe-nozzle placing device to the crack and joint portion in which the goose-based composition penetrates; The goose-based composition is to include a fine aggregate spraying step of spraying fine aggregate on the infiltration and applied cracks.

Pavement Crack, Joint, Crack Repair, Construction Quality, Crack Repair, Goose Composition

Description

Construction method using composition for repairing cracks in pavement

1 is an exemplary block diagram showing a manufacturing process according to the present invention

Figure 2 is an exemplary block diagram showing a construction process according to the present invention

Figure 3 is an exemplary view showing a construction cross section according to the present invention

Figure 4 is an exemplary view showing the configuration of a shoe-nozzle installation apparatus according to the present invention

5 is an exemplary view showing a nozzle unit configuration of a shoe-nozzle installation apparatus according to the present invention.

6 is an exemplary view showing a shoe configuration of the shoe-nozzle installation apparatus according to the present invention.

* Explanation of symbols for main parts of the drawings

(11): nozzle 12: on-off valve

(13): adjusting cable (14): adjusting handle

15: work handle 16: screw coupling

(17): nozzle separation fitting (21): "c" type housing

22: adjustment clamp 23: slider

(24): Bolt (25,25 '): Bracket

(26): screw guide rod (27): nozzle guide

(27 '): shoe nozzle 28: nut

(N): Nozzle part (S): Shoe part

(P): nozzle pipe 100: shoe-nozzle laying device

The present invention relates to a construction method using a goose-based composition for cracking and joint repair of pavement, and the construction width and thickness of the goose-based composition having excellent adhesion and flexibility to the initial cracking site or joint of the existing pavement road It relates to a construction method using a goose-based composition for repairing cracks and joints on a pavement to prevent crack progression and extend road life.

In general, cracks and joints on the pavement are not only frozen due to external environment, that is, high temperature and low temperature gaps, continuous load transfer due to traffic load, ground behavior and momentary impact, but also plastic deformation and detachment. , Cracks occur vertically or horizontally on the pavement surface due to the intrusion of chloride used to remove sea ice and freezing, and these cracks are formed by the external environment and external force that overcome the bonding force between the asphalt particles. Infiltration of air, water and water tends to cause serious damage due to the rapid crack propagation, and the expansion and contraction of concrete, floating settlement of foundations, and cracks in concrete roadways when used for a long time or when an overloaded vehicle passes the road. Is occurring or breakage is occurring

In order to construct cracks and joint repair parts on the pavement as described above, many researches and developments on crack and joint repair parts are being conducted. Such cracks and joint repair materials include polymer additives including rubber additives and SBS, asphalt, etc. Is formulated at a certain ratio at a predetermined temperature, and a plasticizer is added to impart fluidity to the basic curable property so that filling can be made naturally, and when cured for a predetermined time, it is completely cured to repair cracks and joints on the pavement. have.

However, the conventional pavement cracks and joint repair site repairing material as described above has a long time to harden after the operation to delay the opening of the repair road, there was a problem that obstructs the flow of traffic.

In addition, in order to constantly adjust the construction width, construction thickness, etc. of the repair material for the cracks and joint repair parts of the pavement during the construction work, a large number of highly skilled workers have to construct the construction work for many working hours by hand work. There is a variety of problems, such as delay in rise and work time, the workability is reduced, the road life is shortened due to the deterioration of the construction quality of the unskilled construction.

The present invention is to solve the above problems, the object is to construct a goose-based composition having excellent properties on the pavement cracks and joints, to prevent the progression of cracks and joint breakage, and to extend the life of the road In addition, while reducing the road management cost, and to provide a construction method using a goose-based composition for repairing cracks and joints on the pavement to facilitate the vehicle communication.

Another object of the present invention is to easily adjust the construction width and construction thickness of the goose-based composition to have different construction widths and construction thicknesses according to cracks and joint repair areas on the pavement, thereby improving the construction properties and construction quality, It is to provide a construction method using a goose-based composition for repairing cracks and joints that can be equipped with a beautiful beauty.

The present invention is 20-40wt% asphalt, special polymer plastic 5-15wt%, special fibrous filler 20-30wt%, softener 10-30wt%, tire powder 5-20wt%, special minerals 10-20wt%, UV stabilizer 0.1-3wt %, And 0.1 to 3 wt% of antioxidant.

The special polymer plastic is a thermoplastic resin and a thermoplastic elastomer, which adjusts high temperature fluidity, improves adhesion, low temperature, improves adhesion and elasticity, reinforces strength, and is added to enhance bonding strength when mixing with aggregates. Polystyrene, poly butadiene, polyethylene, poly ethylene, ethylene-butene copolymer, ethylene-octene copolymer alone or 2-3 Use a mixture of species. Such a special polymer plastic stick is stable in heat (high temperature), and the adhesive force with the lower leg (asphalt road surface) is increased.

The special fibrous filler is uniformly dispersed and added to improve specific gravity control and weather resistance, and uses a cellous system, and includes PP short fibers, PE short fibers, paper grinds (powder), glass fibers, and the like. Mainly, 100-300 mesh thing is used.

The tire powder is added to absorb shock and noise, and finely crushed waste tires (10 to 80 mesh) are used.

The softener is used as a dispersion medium to impart softness and fluidity to the mixture, using one or two or more selected from aromatic, paraffinic, and naphthenic process oils, and considering the softness and fluidity of the entire mixture. 10-30 wt% is added.

The special mineral material is injected into the dispersion (100 ~ 300 mesh), such as a cell-based filler (Filler) and talc (talc), ceramics, haemulseok, etc., to increase the filling resistance of the goose-based joint composition, resistance to shear force, Contribute to improving weather resistance.

The UV stabilizer is a kind of light stabilizer to prevent the aging of rubber or plastics, and to improve weather resistance and light resistance, using a conventional UV stabilizer commonly used as a UV stabilizer, hydroxy benzophenone (Hydroxy Benxophenone), It is preferable to use one selected from Benzotriazoles and Subsitutes Acrylate.

The antioxidant is to prevent the polymer material from being deteriorated due to oxidation and deterioration by oxygen in the air, and includes phenolic antioxidants, monophenolic, bisphenolic, and polymeric phenolic antioxidants, and amine oxidation. One selected from the inhibitors is used, and 0.1 to 3 wt% is added.

1 is a block diagram showing a manufacturing process according to the present invention, the present invention is added to the softener in the asphalt, and homogenized by stirring it at a constant temperature, and then added / stirred special polymer plastic and tire powder After dissolving, special fibrous filler is added to homogeneously stir, and special minerals are added to homogeneous stir and then UV stabilizer and antioxidant are added.

That is, the present invention is a softener input step of homogeneously stirring by adding a softener to the asphalt (S100); A special polymer plastic input step of completely dissolving the special polymer plastic and the tire powder in the homogenized solution (S200); A special fibrous filler input step of homogeneously stirring the special fibrous filler in a solution in which the special polymer plastic and tire powder are dissolved (S300); A general filler input step (S400) of homogeneous stirring by adding the special fibrous filler and then adding special minerals; A UV stabilizer and an antioxidant input step of adding the UV stabilizer and an antioxidant to the solution in which the filler is siliceous and stirred (S500); It consists of a packaging step (S600) for individually packaging the homogeneously stirred mixture.

The softener input step (S100) is to homogeneously stir by adding the softener to the asphalt, and stirred for 20 to 40 minutes at 10-20 rpm at a temperature of 170 ~ 190 ℃, preferably at 15 rpm for 30 minutes.

The special polymer plastic input step (S200) is a complete dissolution of the special polymer plastic and tire powder into the solution softened by the siliceous siliceous solution, the special polymer plastic and tire powder in a solution maintaining the temperature of 170 ~ 190 ℃ The solution is stirred at 3 to 4 hr and 25 to 35 rpm to dissolve and disperse. In this case, in order to melt (dissolve) the special polymer plastic and the tire powder, a temperature of 170 to 190 ° C must be maintained, and the homogeneous stirring speed is preferably 30 rpm.

The special fibrous filler input step (S300) is a special fibrous filler is added to the mixed solution in which the special polymer plastic and the tire powder are completely dissolved, and is stirred for 2 to 3 hr to homogenize completely.

The special minerals input step (S400) is a special minerals in a completely stirred solution of the special polymer plastic and tire powder, and homogeneously stirred for 90 to 150 minutes, preferably a homogeneous stirring for 120 minutes.

In the UV stabilizer and antioxidant input step (S500), when the UV stabilizer and the antioxidant are added to the dissolution tank all at once, agglomeration occurs, and each is added and stirred for about 15 to 45 minutes while being slowly added to facilitate dispersion. Let's do it.

As described above, the present invention is put asphalt and softener in a fixed-quantity dissolution tank and heated to 170 ~ 190 ℃, then added a special high-molecular plastic and tire powder and dissolved for a certain time to homogeneously stir, other components are It is not necessary to put them in order, but it is preferable to put them in order to keep the quality of the product homogeneous.

Figure 2 is a block diagram showing a construction process according to the present invention, Figure 3 shows an exemplary view showing a construction cross section according to the present invention, the present invention cuts the construction site to a predetermined depth and width, cutting Construction site cutting step (S`100) to remove foreign substances in the site; A crack high pressure heat treatment step of performing a high pressure heat treatment of the cut portion (S`200); Asphalt 20-40 wt%, special polymer plastic 5-15wt%, special fibrous filler 20-30wt%, softener 10-30wt%, tire powder 5-20wt%, special minerals 10-20wt%, UV stabilizer 0.1-3wt%, Dissolving and heating the goose-based composition containing 0.1 to 3 wt% of an antioxidant to maintain at 150-180 ° C. (S′300); A goose-based composition penetration step (S`400) for infiltrating the heated goose-based composition into a crack and a joint part by a laying apparatus; Goose-based composition applying step (S`500) for applying the goose-based composition by the installation apparatus to the crack and the joint site in which the goose-based composition penetrated; The goose-based composition is composed of a fine aggregate spraying step (S`600) for spraying fine aggregates in the cracked and penetrated site.

The construction site cutting step (S`100) is to automatically cut the cracks and joints to a predetermined depth by a mechanical cutting device, maintaining a depth of 5 to 40mm according to the cracks and joints, 2 to 12mm Cutting to maintain the width of the cut, using a pavement cutting machine for cutting cracks and joints made to process the residue by the air compressor, the air compressor is integrally installed in the mechanical cutting device.

The crack and joint high pressure heat treatment step (S`200) is a high-temperature heat treatment of the cut crack and the joint to process the residue and drying at the same time, the pressure of about 80 ~ 120psi, and the high pressure heated to about 650 ~ 750 ℃ It is treated by air and melts the asphalt surface, so there is no need to apply a separate primer.

The goose-based composition dissolving and heating step (S`300) is to dissolve and heat the goose-based composition of the present invention by equipment such as cooker, asphalt 20 to 40wt%, special polymer plastic 5-15wt%, special fibrous fillers 20-30 wt%, softener 10-30wt%, tire powder 5-20wt%, special minerals 10-20wt%, UV stabilizer 0.1-3wt%, antioxidant composition 0.1-3wt% into the cooker equipment Then, it is heated by indirect heating by gas or diesel heating means to dissolve the solidified goose-based composition, and always maintains the working temperature of 150 ~ 180 ℃.

The goose-based composition penetrating step (S`400) and the goose-based composition applying step (S`500) are heated into the crack portion 400 and the joint portion of the asphalt 200 cut by the shoe-nozzle laying apparatus 100. Injecting / infiltrating and applying the dissolved goose-based composition 300, the goose-based composition is supplied through a feed pipe from a cooker, which is a goose dissolving equipment, into the crack and joint spaces through the nozzle part of the shoe-nozzle installation device. The goose-based composition is injected and penetrated, and the goose-based composition is press-coated so as to have a predetermined width and height at the crack and joint portions through the shoe part of the shoe-nozzle installation device.

The shoe-nozzle installation apparatus 100 is applied to receive the goose-based composition 300 through the supply pipe (not shown) from the cooker (not shown), which is a goose melting equipment as shown in Figure 4 to 6 It consists of a nozzle part N and the shoe part S which partitions and crimps | compresses the goose type composition apply | coated to the cracking site | part at the said nozzle part.

The nozzle portion (N) is provided with a nozzle 11 at the front end of the nozzle pipe (P) and built in the opening and closing valve 12 at the rear end thereof is opened and closed by the control handle 14 by the control cable 13 and the rear end A work handle 15 is installed at the end thereof, and a screw coupler 16 is formed at the last end thereof to be connected to the supply pipe of the cooker.

The shoe part S has a structure of an adjustment clamp 22 and a slider 23 at the tip of the “c” type housing 21, and can be fixed and released by a bolt 24, and the adjustment clamp 22 and the slider are provided. 23 forms a gap from the bottom of the housing 21 to the top and installs the screw guide rods 26 at the rear end brackets 25 and 25 'of the housing 21, so that the screw guide rods 26 The nozzle guide port 27 integrated with the schnozzle 27 'is inserted into the inner side, and one side of the screw guide rod 26 is coupled to the nut 28 so as to correspond to the tip slider 23 structure. have.

That is, the shoe-nozzle installation apparatus can work only with the nozzle portion N according to the working purpose, and can be used by combining the shoe portion S and the nozzle portion N. That is, since the nozzle 11 of the nozzle part N is coupled to the nozzle separation fitting 17 by a nut method, after separating it, the shoe nozzle 27 'of the shoe part S is connected by a nut method. Can be used in combination.

The shoe-nozzle installation apparatus configured as described above penetrates the goose-based composition through the nozzle 11 installed at the tip of the nozzle part N nozzle pipe into the gap of the cracked portion during the penetration of the goose-based composition (S`400). Let's do it.

In addition, during the step of applying the goose-based composition (S`500), the nozzle 11 installed at the tip of the nozzle pipe nozzle pipe is removed, and the shoe nozzles 27 'are coupled to the tip of the nozzle pipe and then cut. Put the shoe part S on the upper part along the crack part line, release the bolt 24 of the adjustment clamp 22 according to the crack width, and adjust the space | interval with the slider 23, and the screw guide rod 26 Adjust the nut 28 as well to adjust the crack width, and rotate the control handle 14 hinged to the control handle base 18 of the nozzle portion (N), the control cable 13 is to open and close the valve 12 After opening and spraying the goose-based composition dissolved at 150 to 180 ° C. in the cooker through the nozzle pipe P connected to the supply pipe and the screw fitting 16, the operator can apply the nozzle device N. On the screw guide rod 26 inside the " c " housing 21 by holding the working handle 15 and the adjusting handle 14 of A distribution nozzle 27 'and integral with the nozzle guide opening (27) evenly by moving left / right and adjusts up / down a nozzle guide opening (27), if necessary.

When an appropriate amount of the high-temperature (150-180 ° C.) goose-based composition is applied as described above, the work handle 15 is gradually moved along the crack site line. At this time, the goose-based composition applied due to the "c" type housing 21 does not deviate from the partitioned range, the adjustment clamp 22 and the slider 23 mounted at the front end are about 3 mm above the bottom of the housing. Since there is a gap of about 3mm higher than the crack surface is pressed while being applied to repair the crack road.

In the fine aggregate coating step (S`600), fine aggregates such as silica sand are sprayed to a thickness of 3 to 4 mm on the cracked portion to which the goose-based composition of the present invention is applied.

As described above, the repaired asphalt cracks are allowed to pass after 10-30 minutes after construction, so the repair construction is carried out while the traffic is phased out.

The penetration test, softening point, and evaporation loss of the goose-based composition of the present invention are constructed as described above, and the results are shown in [Table 1].

Table 1

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

As such, the goose-based composition of the present invention has flexibility and elasticity like silicone even when cured, and when the vehicle passes after construction, the goose-based composition penetrates deeper into the gap between cracks and joints due to the weight of the vehicle body and is firm. It is sealed so as to prevent crack progression and thereby prolong road life. In addition, since it penetrates into cracks and joints and is completely sealed, rainwater penetration is prevented during rain.

In addition, the goose-based composition of the present invention does not need to apply a primer, which is a pretreatment process according to construction because of the excellent adhesion to cracks and joints, thereby simplifying the work process.

In addition, since the traffic can be opened within 10 to 30 minutes after construction, there are many effects such as normalizing the flow of the vehicle early.

Claims (3)

delete delete Cutting the construction site to a predetermined depth and width, and removing the construction site to remove foreign substances from the cutting site; Crack and joint high pressure heat treatment for high pressure heat treatment of the cut portion; 20-40 wt% asphalt alone or in polystyrene, poly butadiene, polyethylene, poly-ethylene, ethylene-butene copolymer, ethylene-octene copolymer 5 ~ 15wt% of special polymer plastic mixed with 2 ~ 3 kinds, 10 ~ 30wt% of softener, 5 ~ 20wt% of tire powder, 20 ~ 30wt% of cellulosic special fibrous fillers, and cellulose with special minerals ) The goose-based composition to which 10-20 wt% of a mineral selected from a filler, talc, ceramic, and vesicles, 0.1-3 wt% of UV stabilizers, and 0.1-3 wt% of antioxidants is heated to 150-180 Dissolving and heating the goose-based composition maintained at ℃; A goose-based composition infiltration step of penetrating the heated goose-based composition into cracks and joints by means of an installation device; A goose-based composition applying step of applying the goose-based composition by a shoe-nozzle placing device to the crack and joint portion in which the goose-based composition penetrates; Construction method using a goose-based composition for repairing cracks and joints on the pavement, characterized in that it comprises a fine aggregate spraying step of spraying fine aggregate on the cracked site where the goose-based composition is penetrated and applied.

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