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WO2016052927A1 - Procédé de réparation de fissure et d'application d'un revêtement général sur des routes bétonnées et bitumées - Google Patents

Procédé de réparation de fissure et d'application d'un revêtement général sur des routes bétonnées et bitumées Download PDF

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Publication number
WO2016052927A1
WO2016052927A1 PCT/KR2015/010100 KR2015010100W WO2016052927A1 WO 2016052927 A1 WO2016052927 A1 WO 2016052927A1 KR 2015010100 W KR2015010100 W KR 2015010100W WO 2016052927 A1 WO2016052927 A1 WO 2016052927A1
Authority
WO
WIPO (PCT)
Prior art keywords
epoxy
concrete
pavement
urethane
silica sand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2015/010100
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English (en)
Korean (ko)
Inventor
최동현
박혜정
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ROADCHEM CO Ltd
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ROADCHEM CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ROADCHEM CO Ltd filed Critical ROADCHEM CO Ltd
Publication of WO2016052927A1 publication Critical patent/WO2016052927A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/10—Coherent pavings made in situ made of road-metal and binders of road-metal and cement or like binders
    • E01C7/14—Concrete paving
    • E01C7/147—Repairing concrete pavings, e.g. joining cracked road sections by dowels, applying a new concrete covering
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0966—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving
    • E01C23/0973—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for filling or priming, with or without working the surface of the filling or applying particulate material thereto, e.g. for filling the joints of stone-sett paving with liquid or semi-liquid materials, e.g. crack sealants
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/10—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for raising or levelling sunken paving; for filling voids under paving; for introducing material into substructure
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/12—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for taking-up, tearing-up, or full-depth breaking-up paving, e.g. sett extractor
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C7/00—Coherent pavings made in situ
    • E01C7/08—Coherent pavings made in situ made of road-metal and binders
    • E01C7/18—Coherent pavings made in situ made of road-metal and binders of road-metal and bituminous binders
    • E01C7/187—Repairing bituminous covers, e.g. regeneration of the covering material in situ, application of a new bituminous topping

Definitions

  • the present invention is to remove the aging surface of concrete and asphalt roads and then repair the cracks and to repair the front surface plastering material for the road to apply and apply the entire surface up to 2 ⁇ 8mm on the road and crack repair of concrete and asphalt roads using the same And a total plastering method.
  • automotive roads can be classified into asphalt pavement and concrete pavement, and concrete used for concrete pavement according to the present invention is exposed to sunlight and new construction occurs all the time, and temperature changes and freezes and thaws repeatedly in summer and winter. Therefore, the basic design is to install the expansion joint at regular intervals in the longitudinal direction.
  • Asphalt is produced naturally and artificially from petroleum, and most of the asphalt currently used for pavement is petroleum asphalt. Asphalt has a high temperature and becomes a liquid state, and at low temperatures, it becomes very hard, and when paving roads, solid asphalt is heated and melted into a liquid state and aggregates such as crushed stone, sand, and stone Asphalt road is formed by mixing about 5 ⁇ 6% of liquid asphalt and applying it to the road and then pave the road.
  • Concrete roads may be partially damaged due to various factors, such as lack of compaction or poor mix quality of cement and aggregate, such as lack of quality control during paving, and environmental effects such as construction in winter. Breakage or cracking occurs.
  • Conventional concrete road repairing method is to cut the existing pavement, cast high-strength concrete and perform machine automatic horizontal plastering using surface flattener. When the repair is performed in this way, joints are essentially formed on the repaired pavement surface and the existing pavement surface, and damage occurs again around the formed joint.
  • the modified ascon is packed after cutting the bottom to 5 cm.
  • such a floor has been cut to remove the cutting to a certain thickness and the asphalt paving is carried out to the entire surface until now, the total method of construction. Since the asphalt is weakly bonded to the existing concrete, the vicious cycle of repeating the asphalt pavement is repeated every time since the vehicle starts to ring and cracks as the vehicle passes and begins to partially dig out.
  • Blocking or restricting the traffic for a long time not only causes traffic jams, but also weak durability due to weak cohesion at the boundary between the existing road surface and the resurfaced material. There are problems such as excessive maintenance costs.
  • the first object of the present invention is to allow the front pavement in the case where the front pavement is required because it is relatively broadly damaged, including partial damage parts of a relatively wide range in concrete and asphalt roads.
  • the second object of the present invention is excellent in the cohesion with the existing road pavement due to the high tensile strength and high elongation of the road surface repaired using the front coating material, and the urethane is epoxy while having waterproofness to prevent water from seeping
  • the present invention provides a method of applying a front plaster using a plaster coating material that can protect mortar from the impact of a tire and block UV rays of sunlight for a long time.
  • the crack repair of the concrete pavement is characterized in that after the holes are drilled at regular intervals along the cracks, the epoxy is filled in the holes to give the shear force.
  • crack repair of the asphalt pavement in the second step by cutting along the cracks, applying epoxy to the cutting surface, filling the urethane into the cutting portion, and by spraying silica sand on the urethane urethane to stretch the asphalt It was characterized by enabling absorption.
  • the front plastering material for concrete and asphalt roads according to the present invention is mixed with silica sand and fast curing epoxy included in the plastering material, so that the compressive strength and adhesive force, which is the characteristic of epoxy, are added, and thus the plastering material is attached with the cohesion on the ground. have.
  • epoxy is applied to the existing package before spraying, and silica sand is sprayed to make epoxy mortar slip easily without slipping when performing epoxy mortar plastering, and water is absorbed in the repair body or heat from concrete and asphalt ground. And moisture is released through the urethane coated in the fine gap between silica sand or gravel to prevent the front plastering coating from falling off from the base surface.
  • the fast-hardening epoxy contained in the repairing material cures quickly after pavement repair and paving, and eliminates preliminary processes such as cutting, crushing, waste collection, water cleaning, and drying, which are used to pour concrete. This can minimize the vehicle travel time limit.
  • the existing method removes 2cm to 5cm of existing concrete or asphalt pavement, and then performs asphalt pavement, which inevitably generates a lot of waste and is not environmentally friendly. If the cutting is over a certain thickness and the strength is considerably lowered, and if the pavement of 5cm is removed about 2cm in the case of asphalt pavement, the asphalt remaining about 3cm due to the impact cannot be maintained because of the impact, and cracks occur and fall off from the ground surface. The phenomenon occurs. Therefore, when the surface of aging concrete and asphalt is cut to about 2 ⁇ 5mm and the front plastering of the present invention is carried out, there is no drop-off separation phenomenon and the part of the epoxy mortar that has been dropped after a certain period of time has been plastered again and worn out.
  • Figure 1 is a cross-sectional view showing the shape of the damaged portion of the concrete or asphalt partially dropped off the entire surface of the existing road.
  • FIG. 2 is a cross-sectional view of the surface small amount cutting step (S1) for slightly cutting off the surface of the concrete or asphalt road according to the present invention to about 2 ⁇ 5mm.
  • Figure 3 is a cross-sectional view of the state (S3) sprayed silica sand after the epoxy or concrete road according to the invention.
  • S4 is a cross-sectional view of a state (S4) for plastering epoxy mortar on the concrete or asphalt road according to the present invention.
  • Figure 5 is a cross-sectional view of the state (S5) after applying the urethane and sprayed silica sand after plastering the epoxy mortar on the concrete or asphalt road according to the present invention.
  • FIG. 6 is an enlarged cross-sectional view of portion 'A' of FIG. 5.
  • Figure 7 is a block diagram showing a step by step plastering repair process of concrete or asphalt road according to the present invention.
  • FIG. 8 is a plan view and a cross-sectional view of a crack portion for explaining a method for repairing cracks in a concrete pavement.
  • FIG. 9 is a cross-sectional view of a crack portion for explaining a method for repairing cracks in an asphalt pavement.
  • Plastering material for concrete roads according to the present invention is an environmentally friendly repair material that is simple, easy to maintain and minimize waste generation by cutting the surface a small amount of the road, and then completely plastering and applying the surface after crack repair.
  • Asphalt cracks are highly mobile, so the cracks are repaired by a combination of epoxy and urethane, and then plastered and applied.
  • Plastering material for the entire surface coating of concrete or asphalt surface uses epoxy mortar composed of fast epoxy and silica sand and fast epoxy and silica sand, urethane and silica sand.
  • the particle diameter of the silica sand and gravel forming the repairing material is 4 mesh to 40 mesh, and the mixing ratio of epoxy and silica sand is 1: 2.5 to 1: 5 by volume.
  • FIG. 1 is a cross-sectional view showing a broken part 10a partially broken in the entire surface of a concrete or asphalt road pavement 10 used in the prior art.
  • the present invention provides a first step S1 of cutting a small amount of the surface as shown in FIG. 7, a second step S2 of repairing a crack, and silica sand after epoxy coating. And a third step (S3) of applying, a fourth step (S4) of plastering epoxy mortar and a fifth step (S5) of applying a silica sand after urethane application.
  • the aged surface of the concrete or asphalt road pavement 10 is cut and removed to a thickness of 2 mm to 5 mm using a diamond cutter as shown in FIG. 20).
  • the existing method removes 20mm to 50mm and then wraps it to 40mm to 50mm, so the existing concrete thickness of about 30cm is reduced to 25cm or less, so the thickness is reduced in the defective state. Weak and cracked, so chances of getting back again are high.
  • materials such as concrete and asphalt are heterogeneous materials, all materials of asphalt or improved asphalt are not integrated with existing concrete substrates.
  • the concrete surface is well cut and the asphalt and the improved asphalt are paved with 40mm to 50mm. At this time, cutting 50mm of concrete road is too hard and the ground concrete becomes weak, so 20mm cutting and subsequent work are often performed.
  • the thickness difference of more than 20mm from the existing surface of the product acts as a risk factor when driving at high speeds.
  • the present invention is to remove only the surface of the deteriorated concrete or asphalt as scraping to minimize the impact on the mother and the pavement also forms a 2mm to 8mm, so that the existing pavement floor and flatness is kept constant.
  • the second step (S3) of applying the silica sand after the epoxy coating is a process of spraying the silica sand (30b) after applying the epoxy (30a) to the surface cutting portion 20 This is very important as a layer in which the existing package and the package of the present invention is integrated. Epoxy 30a penetrates into the concrete to be integrated into a mass.
  • the fourth step (S4) for plastering the epoxy mortar is plastered with epoxy mortar (40) mixed with epoxy and silica sand of 4 to 40 mesh in a volume ratio of 1: 2.5 to 1: 5, respectively, as shown in FIG. It is the process which becomes the backbone of this invention which implements. This process is so important that it is a key part of the work.
  • Epoxy has excellent tensile strength, compressive strength and adhesive strength, so if you use epoxy well, you can complete the work very successfully in construction and civil engineering. However, if you do not use this property well and just apply it, you will not be able to cope with the swelling power of the sunlight, heat and moisture, and the film will break out, causing a defect in the product and reworking the entire surface.
  • Epoxy has excellent tensile strength, compressive strength, and adhesion, but it is not breathable, hot air release, or moisture release. Therefore, when the epoxy is not proportioned and plastered or applied, it bursts out due to moisture and heat.
  • the adhesion between the silica sand and the silica sand or gravel and gravel is made well and a slight gap is generated so that the urethane flows between these pores during the subsequent urethane work so that moisture and heat are transferred through the breathable urethane.
  • it is a breakthrough system that does not create expansion pressure inside the epoxy mortar and at the same time achieves waterproof performance without defect.
  • the fifth step (S5) of applying the silica sand after the urethane coating is a process of applying the urethane (50a) and spraying the silica sand (50b) after the epoxy mortar 40 is solidified as shown in FIG.
  • Urethane molding (50a) (50b) plays a very important role to prevent the slip by absorbing the impact of the vehicle wheels and hold the silica sand.
  • FIG. 6 is a detailed cross-sectional view of the present invention, which is a detail that plays a very important role of discharging the heat and moisture while the urethane (50a) flows through the epoxy mortar (40) to integrate.
  • the second step (S2) for repairing the cracks not described in FIG. 7 will be described in detail with reference to FIGS. 8 and 9 because there is a difference between the crack repair method of concrete and the crack repair method of asphalt.
  • the road repair paving method according to the present invention cuts 2 to 5 mm on the damaged part 10a generated on the existing road pavement 10, and then the damaged part 10a. ) Becomes shallower (S1).
  • the urethane (50a) is applied as shown in Figure 5 and immediately sprayed with silica sand (50b) (S5).
  • the root of the silica sand (50b) is settled down the urethane (50a), so that the surface of the urethane (50a) so that the silica sand (50b) is covered to cover the entire non-slip. This keeps the non-slip state in the future when the urethane 50a wears due to the vehicle traffic, thereby maintaining the anti-slip performance.
  • FIG. 8 is a plan view of the concrete pavement showing a repair method suitable for repairing the crack 81 of the concrete pavement 80 in the second step of repairing the crack.
  • the present invention focuses on the principle of the shear force force, as shown in FIG. 8 (a), drills the holes 82 at regular intervals along the cracks 81 of the concrete pavement 80, and then blows away the dust.
  • An elastic epoxy 83 is poured into the hole 82. It is well known that the road cannot be injected because the road does not take much time. Since the hole 82 is drilled, the elastic epoxy 83 enters deeply, and since the hole 82 is drilled at a predetermined interval of about 20 cm, the epoxy 83 is completely adhered to the bottom at a predetermined interval.
  • FIG 8 (d) shows a cross-sectional view of the construction surface in which the epoxy 83 is poured through the hole 82 as in the present invention.
  • epoxy 83 flowed along the hole 82 to the bottom.
  • Figure 8 (e) shows that only the epoxy (83) flowed into the surface without a hole in the conventional manner. Since only epoxy is buried on the surface, no force can be exerted, and there is no shear force, so a slight force is applied to the crack 81.
  • Figure 9 (a) shows a crack 91 of the general asphalt pavement 90 as the asphalt pavement 90 moves a lot in accordance with the temperature change in the summer and winter, and the repair method of the concrete pavement as shown in FIG. Even if epoxy is added together, cracks are generated on the spot and cracks are transferred to subsequent packages.
  • the cross section is cut along the crack 91 in the shape of 'V', and then the epoxy 92 is applied to the cut surface thinly and the urethane 93 is cracked 91.
  • the silica sand (94) is carried out by adjusting the time when the urethane (93) is slightly hardened so that the silica sand (94) does not sink, and the half is adhered to the urethane (93) and the third is the subsequent third step.
  • the thickness of the concrete decreases and the ground is weakened.
  • the asphalt and the concrete cannot be fundamentally integrated, so that the cracks occur and fall off due to repeated impact vibration during the traffic passage. Afterwards, the entire asphalt pavement must be repeated.
  • the above-mentioned epoxy is fast-hardening, and the mixing ratio of the epoxy mortar 40 material may mix fast-hardening epoxy and 4-40 mesh silica sand in a volume ratio of 1: 2.5 to 1: 5, respectively. .
  • the blending ratio exemplified herein is an optimal numerical range in consideration of tensile strength, compressive strength and adhesive strength of the repairing material, as in the following test example, wherein the present invention uses a fast curing epoxy mortar mixed with a fast curing epoxy and a silica sand. If the repairing material is prepared by applying the fast-hard epoxy and silica sand exemplified above, it should be understood that it falls within the scope of the present invention even if it is outside the range of the compounding values exemplified above.
  • the fast epoxy mortar hardens and dries within a fast pot life, thereby allowing traffic flow. It can be constructed in the form of partial repair or full repair by section by controlling partly. At this time, the curing drying time depends on the temperature, so when the concrete floor is actually heated by sunlight and the temperature rises, it can be cured and dried in a shorter time to pass the vehicle as soon as possible. In the summer of 30 ° C, the work can be completed in 30 minutes.
  • the fast curing epoxy mortar 40 is mixed in the field using a drum mixer or a drill mixer, and spread on the floor using iron trowels, rubber trowels and hopper equipment, and then rub the floor as if plastering.
  • the plastering application is completed only once to complete the work, and the damaged part 10a is filled up on the existing road pavement 10, and the flat surface is completed with epoxy mortar 40 to fill the horizontal with the existing pavement 10. It's a new way to create flat surfaces in a simple and technological way. Conventional method is to remove the entire surface to make a flat surface and then packing while maintaining a constant thickness of 40mm to 50mm.
  • urethane recommends products with a urethane tensile strength of 100 kg / cm2 or more and elongation of 300% or more, but even if the limit is not reached, the concept of using urethane as a function of protecting epoxy mortar without a seam should be widely recognized. Of course.
  • a material in which a fast epoxy and a silica sand having a particle diameter of 4 to 40 mesh are mixed at a volume ratio of 1: 3 is prepared and mixed in a proportion thereof, and the width, length, and height are 5 cm and 5 cm, respectively.
  • the first test body of 5 cm cube and the second test body of 30 cm, 30 cm, and 5 cm cube were molded and cured, and then the Korea Institute of Chemical Convergence and Testing tested the compressive strength of the first test body and the adhesion strength of the second test body. And abrasion resistance test was performed, respectively, the results are shown in Tables 1 to 3 below.
  • the compressive strength of the first test body is a volume ratio of fast epoxy to silica sand is 1: 3 to 63.96 MPa.
  • the compressive strength of the ground concrete is 25 ⁇ 30 MPa, which maintains a very good compressive strength above the compressive strength of the ground concrete.
  • the adhesive strength of the second test specimen is a fast ratio of epoxy to silica sands in a volume ratio of 1: 3 to 2.5 MPa, and the reference adhesive strength of concrete flooring material is 0.8 N / mm2 or more, thereby improving the adhesive strength of the conventional road concrete. You can see that it is quite good.
  • the wear resistance of the second test body is 0.63 mm.
  • the standard of wear resistance of concrete for concrete road presented by Korea Expressway Corporation is 2mm or less. Therefore, it can be seen that the wear resistance of 0.63 mm is very good.
  • step (S5) of applying the urethane on the epoxy mortar 40 is added, it is possible to prevent the epoxy mortar from abrasion and the direct exposure of the epoxy mortar from sunlight to aging.
  • the curing and drying time of epoxy is very decisively affected by the temperature. In reality, the curing and drying process is performed in the concrete and asphalt heat conditions, so the curing and drying time is much faster in this section. In summer, it hardens to dry within 30 minutes.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Road Paving Structures (AREA)
  • Road Repair (AREA)

Abstract

La présente invention concerne un procédé permettant de réparer une fissure et d'appliquer un revêtement général sur des routes bétonnées et bitumées. En vue de mettre en œuvre un revêtement général lorsque le revêtement général est nécessaire du fait de l'endommagement partiel ou important sur des routes bétonnées et bitumées, l'invention porte sur un procédé de réparation d'une fissure et d'application d'un revêtement général sur des routes bétonnées et bitumées, ledit procédé comprenant les étapes suivantes : une première étape consistant à découper et à retirer une surface détériorée au moyen d'une machine de coupe de surface ; une deuxième étape consistant à réparer une fissure ; une troisième étape consistant à appliquer un époxy à durcissement rapide et à disperser un sable siliceux ; une quatrième étape consistant à former un revêtement de réparation par enduction de l'ensemble de surface avec un mortier époxy à durcissement rapide à une épaisseur située dans la plage allant de 2 à 8 mm, le mortier époxy à durcissement rapide étant préparé par mélange d'un époxy à durcissement rapide et d'un sable siliceux de 4 à 40 mesh à un rapport volumique allant de 1:2,5 à 1:5 ; et une cinquième étape consistant à appliquer de l'uréthane sur l'ensemble de la surface, de sorte que l'uréthane s'écoule entre le sable siliceux et le revêtement de réparation et à disperser un sable siliceux de sorte que la chaleur et l'humidité soient évacuées par le biais de l'uréthane.
PCT/KR2015/010100 2014-09-29 2015-09-24 Procédé de réparation de fissure et d'application d'un revêtement général sur des routes bétonnées et bitumées Ceased WO2016052927A1 (fr)

Applications Claiming Priority (2)

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KR1020140130184A KR101522505B1 (ko) 2014-09-29 2014-09-29 콘크리트, 아스팔트 도로의 크랙 보수 및 전면 미장도포방법
KR10-2014-0130184 2014-09-29

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KR101868863B1 (ko) * 2017-11-27 2018-06-19 로드켐 주식회사 주차장, 공장, 도로 또는 옥상의 방수바닥재 및 그의 시공 방법
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KR102416515B1 (ko) 2022-05-03 2022-07-06 주식회사 다현산업 순환 경량골재를 이용한 도로의 긴급보수용 개질 아스팔트계 친환경 보수재 조성물 및 이의 제조방법
KR102686038B1 (ko) 2023-07-24 2024-07-19 주식회사 유테크 배수성아스콘포장의 보수 및 예방적유지관리를 위한 투수성 레진 모르타르 조성물 및 이를 이용한 포장방법

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