KR20140139814A - Polyurethane composition for paving an eco-friendly road and method of process thereof - Google Patents
Polyurethane composition for paving an eco-friendly road and method of process thereof Download PDFInfo
- Publication number
- KR20140139814A KR20140139814A KR1020130060389A KR20130060389A KR20140139814A KR 20140139814 A KR20140139814 A KR 20140139814A KR 1020130060389 A KR1020130060389 A KR 1020130060389A KR 20130060389 A KR20130060389 A KR 20130060389A KR 20140139814 A KR20140139814 A KR 20140139814A
- Authority
- KR
- South Korea
- Prior art keywords
- weight
- parts
- composition
- isocyanate
- resin premix
- Prior art date
Links
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/10—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C04B26/16—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
- C04B26/26—Bituminous materials, e.g. tar, pitch
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polyurethanes Or Polyureas (AREA)
- Road Paving Structures (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a polyurethane mixture for eco-friendly roads which can be advantageously used for packaging asphalt roads such as highways and general highways, and a method for producing the same. More specifically, the present invention relates to a polyurethane mixture for eco- It is easy to construct and economical. When the road is constructed by using such a mixture due to increase of the intermeshing stress and increase of toughness of the asphalt binder, plastic deformation, fatigue crack, port hole breakage The present invention relates to a polyurethane mixture for environmentally friendly packaging and a method for producing the same.
Description
The present invention relates to a polyurethane mixture for eco-friendly roads which can be advantageously used for packaging asphalt roads such as highways and general highways, and a method for producing the same. More specifically, the present invention relates to a polyurethane mixture for eco- It is easy to construct and economical. When the road is constructed by using such a mixture due to increase of the intermeshing stress and increase of toughness of the asphalt binder, plastic deformation, fatigue crack, port hole breakage The present invention relates to a polyurethane mixture for environmentally friendly packaging and a method for producing the same.
The asphalt road as shown in Fig. 1 is packed so that the vehicle can pass smoothly on the ordinary road.
Road pavement is a member that is directly exposed to vehicle loads and various environmental conditions (East Sea, storm, and melting agent) during the public period, so various defects and damage occur frequently. Fig. 2 shows photographs of plastic deformation, fatigue cracking, and port hole breakage occurring in asphalt road pavement. FIG. 3 shows the result of stress concentration analysis distributed in the cross section of the conventional package according to the external traffic load action. The breakage as shown in FIG. 2 is caused by a repetitive external load, Which is 3-5 cm below the top floor or the surface), as the stress is concentrated too much.
So far, various studies have been conducted to extend the life of asphalt pavement. Typical methods include a method using a chemical modifier and a method using a grid-like geosynthetic fiber.
A method using a chemical modifier is a method in which the viscosity of an asphalt binder is increased by melting petroleum (SBS or SBR) polymer particles in an asphalt binder. Although this method has a favorable effect on plastic deformation and the like, in the case of using a general chemical reforming material, the energy cost is increased due to the increase of the mixture production temperature, the difficulty in quality control, the possibility of cracking due to the increase in brittleness of the material at low temperature, There are difficulties in practical application accompanied by environmental problems due to use of particles.
The method of using the grid-like geosynthetic fiber is a method in which the geosynthetic fiber woven in the form of a lattice is laminated in the middle. Although this method has a favorable effect on cracking and plastic deformation, it is difficult to cope with the case where the construction process is complicated and the construction period is lengthened and the construction cost is increased and the largest concentrated stress or shear deformation occurs in the surface layer There is a problem.
The present invention relates to a road pavement mixture which is eco-friendly, easy to construct, economical, and excellent in physical properties and capable of preventing plastic deformation, fatigue cracking, and port holes. And to provide a manufacturing method thereof.
In order to solve the above technical problems, the polyurethane mixture for eco-friendly road packaging according to the present invention comprises an aggregate, an asphalt and a polyurethane binder, wherein the polyurethane binder comprises an isocyanate polyurethane composition comprising a curing agent and an isocyanate, , A polyol, and an additive.
In the present invention, the polyurethane mixture is a concept that collectively means aggregates and asphalt mixed with the polyurethane binder to be used for road pavement, that is, a surface layer and a base layer of a road.
The resin premix composition and the isocyanate composition are mixed in a liquid phase in an amount of 20 to 100 parts by weight based on 100 parts by weight of the resin premix composition and 20 to 100 parts by weight of the isocyanate polyurethane composition.
The present invention also discloses a method for producing a polyurethane mixture for eco-friendly packaging,
A method for producing a polyurethane mixture for eco-friendly road packaging comprises preparing 100 parts by weight of an isocyanate polyurethane composition in 100 parts by weight of a curing agent by blending 100 parts by weight of an isocyanate with an NCO content of 30 to 32% NCO and a viscosity of 50 to 300 cps / ; 35 to 67 parts by weight of a natural polyol, 28 to 60 parts by weight of a common hard polyol, 0.5 to 1.5 parts by weight of a crosslinking agent, 0.1 to 1.0 part by weight of a catalyst and 0.1 to 1.5 parts by weight of an additive are mixed with 100 parts by weight of a resin premix To 1500 cps / 23 占 폚 to prepare a liquid resin premix composition in liquid form; And mixing the isocyanate polyurethane composition and the resin premix composition with an aggregate and an asphalt.
The method for producing an environmentally friendly polyurethane mixture according to the present invention is characterized in that 60 to 85 parts by weight of an isocyanate system, 10 to 25 parts by weight of a polyol and 1 to 5 parts by weight of an additive are contained in an amount of 30 to 32% Is in the range of 50 to 300 cps / 23 占 폚 to prepare a liquid isocyanate polyurethane composition;
35 to 67 parts by weight of a natural polyol, 28 to 60 parts by weight of a common hard polyol, 0.5 to 1.5 parts by weight of a crosslinking agent, 0.1 to 1.0 part by weight of a catalyst and 0.1 to 1.5 parts by weight of an additive are mixed with 100 parts by weight of a resin premix To 1500 cps / 23 占 폚 to prepare a liquid resin premix composition in liquid form; And mixing the isocyanate polyurethane composition and the resin premix composition with an aggregate and an asphalt.
According to the present invention, the following effects can be expected.
First, the polyurethane mixture for eco-friendly road packaging according to the present invention and the method for manufacturing the same are advantageous in terms of ease of construction and energy because it is possible to apply at room temperature without heating operation in road pavement.
Second, the polyurethane mixture for eco-friendly road packaging according to the present invention and its manufacturing method have an advantage of being able to prevent tearing, breakage, etc. on the road by improving structural durability such as excellent bending strength, restoring elasticity and plastic deformation prevention.
Thirdly, the polyurethane mixture for environmental friendly packaging according to the present invention and the manufacturing method thereof are advantageous in environmental friendliness by not using petroleum polymer.
Figure 1 shows a cross-sectional configuration of a typical asphalt road pavement.
Fig. 2 shows a broken state of the conventional asphalt road pavement.
Fig. 3 shows stress distribution and shear deformation distribution due to axial load action in asphalt road pavement.
The present invention relates to a polyurethane mixture for eco-friendly packaging comprising an aggregate, an asphalt and a polyurethane binder, and a process for producing the same. Hereinafter, preferred embodiments of the present invention will be described.
The polyurethane mixture for eco-friendly road packaging according to the present invention is formed by mixing an aggregate, an asphalt and a polyurethane binder, and relates to a mixture used for road construction.
The above-mentioned asphalt is not particularly limited, and for example, conventional asphalt such as straight asphalt, semi-asphalt asphalt, prone asphalt, cut back asphalt, regenerated asphalt and the like can be used. These may be used alone or in combination of two or more.
The aggregate may be aggregate or filler such as used for pavement for general roads, granularity or blend of granularity, for pervious pavement, for drainable pavement, for soundproof pavement, etc. For example, as the aggregate, crushed stone, crushed stone, gravel, sand or a mixture thereof can be used. As the filler, it is possible to use a salt, talc, calcium carbonate or a mixture thereof.
Also, the aggregate used in the present invention may be an asphalt recycled aggregate produced by pulverizing waste materials of existing packages. Alternatively, a mixture of a new material and an asphalt recycled aggregate may be used.
By using asphalt regenerated aggregate, recycled aggregate obtained from waste materials of existing asphalt pavement, which was difficult to be reused in conventional high performance pavement, can be used more effectively. In addition, in the present invention, since the mixture containing the polyurethane binder is excellent in toughness, even when recycled aggregate is used, it is difficult for the recycled aggregate to peel off from the mixture, so that the recycled aggregate has an advantage of being environmentally friendly.
Further, since the present invention uses a polyurethane binder having excellent toughness, it has an advantage of excellent physical strength even when recycled aggregate is used.
Particularly, in the present invention, by using an environmentally friendly polyurethane binder as a modifier, the physical properties such as toughness of the mixture are improved, and plastic deformation and damage problems such as portholes on the road can be prevented.
In the present invention, the polyurethane binder comprises a liquid type isocyanate polyurethane composition comprising a curing agent and isocyanate, and a liquid premix composition of a liquid type including a resin premix, a polyol and an additive, and is mixed with an aggregate and an asphalt at room temperature So that the construction can be performed.
In the present invention, the isocyanate polyurethane composition shows two embodiments.
The first embodiment is a liquid composition comprising 100 parts by weight of isocyanate based on 100 parts by weight of a curing agent and having a NCO content of 30 to 32% NCO and a viscosity of 50 to 300 cps / Quot;).
And the second embodiment comprises 60 to 85 parts by weight of isocyanate, 10 to 25 parts by weight of polyol and 1 to 5 parts by weight of an additive, based on 100 parts by weight of the curing agent, having an NCO content of 15 to 25% NCO and a viscosity of 300 to 800 cps / (Hereinafter referred to as "second composition") at 23 占 폚.
In the first composition and the second composition, the isocyanate is an isocyanate having at least one isocyanate group (NCO Group). Examples of the isocyanate include 4,4'-diphenylmethane diisocyanate, pure-MDI ), Toluene diisocyanate (TDI), methylene diphenyl diisocyanate (crude MDI), and the like can be preferably used.
In the second composition, the polyol has a hydroxyl group (-OH) in the molecule, and a polyether or a polyol or a mixture thereof may be used.
In the second composition, the active hydroxyl group (-OH) of the polyol is mixed with the isocyanate group (NCO Group) of the isocyanate to form an urethane prepolymer having an isocyanate group at the terminal formed.
The polyol is preferably dehydrated under vacuum so that the water content does not exceed 0.05% by weight. In order to control the moisture content, the production of carbon dioxide, which is a by-product, is increased due to excessive reaction due to excessive water content, thereby preventing formation of bubbles and deterioration of binding force.
The prepolymer formed by the reaction of the polyol and the isocyanate has a structure in which an isocyanate group at the terminal reacts with a component having a hydroxy group such as moisture in the air to generate an amino group through a camamic acid and the thus formed amino group reacts with another isocyanate group to form a urea bond And the aggregate is adhered to each other through such a process.
If the content of the isocyanate group in the first composition is less than 30 and the amount of the isocyanate group in the second composition is less than 15, the amount of the isocyanate group which can react with water to form a urea bond is insufficient, The urea bond can not be formed due to the reaction with the carbamic acid without reacting with the carbamic acid to thereby form a carbamate salt. Accordingly, there is a problem that the adhesive strength is lowered. When the ratio exceeds 32 in the first composition and exceeds 25 in the second composition, Not a lot of Isocyanates
There is no improvement in physical properties. Therefore, in the present invention, the amount of the isocyanate group is limited in the combination of the first composition and the second composition.
In addition, since the first and second compositions have an active isocyanate group (-NCO), they exhibit adhesion properties (curing property) when reacted with a very small amount of water and alcohol groups (-OH) Particularly, in the present invention, the first composition or the second composition is used in a liquid state at room temperature and mixed with the third composition to be described below, so that the viscosity of the first composition is 50 to 300 cps / Lt; / RTI > to < RTI ID = 0.0 > 800cps / 23 C. < / RTI > This is because the strength is lowered when the viscosity is low and the workability is lowered due to mixing and stirring when the viscosity is high.
The additive may be optionally added as needed, and may be selected from a pigment for color mixing and a flame retardant for reinforcing flame retardancy.
In the present invention, a resin premix composition is proposed as a subject. The resin premix composition (hereinafter referred to as "third composition") comprises 35 to 67 parts by weight of a natural polyol, 0.1 to 1.0 part by weight of a catalyst and 0.1 to 1.5 parts by weight of an additive, and has a viscosity of 600 to 1500 cps / 23 占 폚.
The crosslinking agent improves the reactivity synergistic effect and the shrinkage problem due to the promotion of the curing property. 1,4-butanediol, ethylene glycol, glycerin, diethylene glycol, triethylene glycol, triethanolamine, ethylene glycol, 1,4-butanediol, diethanolamine and monoethanolamine.
The liquid compositions of the first to third liquid compositions may be prepared by mixing the first composition with the third composition or the second composition with the third composition so that the mixing ratio of the third composition to the third composition With respect to 100 parts by weight, it is proper that the first composition or the second composition is mixed in an amount of 20 to 100 parts by weight. This limitation is to prevent deterioration of the adhesive strength and to prevent the physical strength from being lowered.
Meanwhile, 100 parts by weight of isocyanate is blended with 100 parts by weight of a curing agent to form an isocyanate polyurethane having a NCO content of 30 to 32% NCO and a viscosity of 50 to 300 cps / Preparing a composition (S11); 35 to 67 parts by weight of a natural polyol, 28 to 60 parts by weight of a common hard polyol, 0.5 to 1.5 parts by weight of a crosslinking agent, 0.1 to 1.0 part by weight of a catalyst and 0.1 to 1.5 parts by weight of an additive are mixed with 100 parts by weight of a resin premix To 1500 cps / 23 占 폚 to prepare a liquid resin premix composition (S12); Mixing the isocyanate polyurethane composition and the resin premix composition with an aggregate and an asphalt (S13).
Also, in the method for producing a polyurethane mixture for eco-friendly road packaging according to the present invention, 60 to 85 parts by weight of isocyanate, 10 to 25 parts by weight of a polyol and 1 to 5 parts by weight of an additive are added to 100 parts by weight of a curing agent in an NCO content of 30 to 32% (S21) of preparing a liquid isocyanate polyurethane composition by blending the polyisocyanate component with a viscosity of 50 to 300 cps / 23 占 폚 to prepare a liquid isocyanate polyurethane composition; and mixing 35 to 67 parts by weight of a natural polyol and 28 to 60 parts by weight 0.5 to 1.5 parts by weight of a crosslinking agent, 0.1 to 1.0 part by weight of a catalyst and 0.1 to 1.5 parts by weight of an additive at a viscosity of 600 to 1500 cps / 23 DEG C to prepare a liquid resin premix composition (S22) , And mixing the isocyanate polyurethane composition and the resin premix composition with an aggregate and an asphalt (S23).
In the above steps S11 and S21, it is proper to carry out the reaction at 60 to 90 DEG C for 5 to 7 hours. Additives can be added selectively as needed, pigments for color mixing, and flame retardants for flame retardancy.
It is appropriate that the NCO content test in steps S11 and S21 is measured by KS M 5969 (test method for isocyanate group content in urethane intermediate or prepolymer).
Since the physical properties of the first composition and the second composition prepared in steps S11 and S21 may be changed when they are exposed to moisture in the air, it is reasonable to control exposure to water and store them at room temperature (23 to 25 DEG C).
In steps S12 and S22, the third composition is prepared by adding polyol, crosslinking agent, catalyst, and additives having a large weight ratio at room temperature (23 to 25 DEG C) in this order and stirring for 3 hours or more. Also in this case, it is proper that the third composition is controlled at a room temperature (23 to 25 ° C) to control moisture exposure, because physical properties may change when exposed to moisture in the air.
It is proper that the first composition or the second composition is used in a ratio of 20 to 100 parts by weight with respect to 100 parts by weight of the third composition in the steps S13 and S23.
There is no particular limitation on the mixing method in steps S13 and S23. For example, a method such as a premix method in which premixed asphalt, a polyurethane binder and an aggregate are mixed, a polyurethane binder, and a plant mix method in which asphalt and aggregate are mixed can be used. However, The method is a plant mix method. Examples of the plant mix method include a method in which an aggregate and an asphalt are mixed in advance, a polyurethane binder is added and mixed, a method in which an aggregate, an asphalt and a polyurethane binder are mixed at the same time, an aggregate and a polyurethane binder are premixed It is natural that various methods such as mixing and adding asphalt are suggested.
Asphalt surface layer asphalt layer
Aggregate subbase floor
Claims (9)
The polyurethane binder may further comprise:
An isocyanate polyurethane composition comprising a curing agent and an isocyanate,
A resin premix composition comprising a resin premix, a polyol, a crosslinking agent, a catalyst, and an additive.
The isocyanate polyurethane composition,
A polyurethane mixture for eco-friendly packaging, comprising 100 parts by weight of isocyanate relative to 100 parts by weight of a curing agent, wherein the NCO content is 30 to 32% NCO and the viscosity is in the range of 50 to 300 cps / 23 占 폚.
The isocyanate polyurethane composition,
Wherein the composition comprises 60 to 85 parts by weight of an isocyanate, 10 to 25 parts by weight of a polyol and 1 to 5 parts by weight of an additive with respect to 100 parts by weight of a curing agent and has an NCO content of 15 to 25% NCO and a viscosity of 300 to 800 cps / By weight of the polyurethane mixture for environmental protection.
In the resin premix composition,
35 to 67 parts by weight of a natural polyol, 28 to 60 parts by weight of a common hard polyol, 0.5 to 1.5 parts by weight of a crosslinking agent, 0.1 to 1.0 part by weight of a catalyst and 0.1 to 1.5 parts by weight of an additive are added to 100 parts by weight of a resin premix, And a viscosity of 600 to 1500 cps / 23 占 폚.
Wherein the isocyanate polyurethane composition is mixed in an amount of 20 to 100 parts by weight based on 100 parts by weight of the resin premix composition.
35 to 67 parts by weight of a natural polyol, 28 to 60 parts by weight of a common hard polyol, 0.5 to 1.5 parts by weight of a crosslinking agent, 0.1 to 1.0 part by weight of a catalyst and 0.1 to 1.5 parts by weight of an additive are mixed with 100 parts by weight of a resin premix To 1500 cps / 23 占 폚 to prepare a liquid resin premix composition in liquid form;
And mixing the isocyanate polyurethane composition and the resin premix composition with an aggregate and an asphalt.
35 to 67 parts by weight of a natural polyol, 28 to 60 parts by weight of a common hard polyol, 0.5 to 1.5 parts by weight of a crosslinking agent, 0.1 to 1.0 part by weight of a catalyst and 0.1 to 1.5 parts by weight of an additive are mixed with 100 parts by weight of a resin premix To 1500 cps / 23 占 폚 to prepare a liquid resin premix composition in liquid form;
And mixing the isocyanate polyurethane composition and the resin premix composition with an aggregate and an asphalt.
Wherein the isocyanate polyurethane composition and the resin premix composition are mixed with the aggregate and the asphalt at room temperature, and 20 to 100 parts by weight of the isocyanate polyurethane composition is mixed and stirred with respect to 100 parts by weight of the resin premix composition, Gt;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130060389A KR20140139814A (en) | 2013-05-28 | 2013-05-28 | Polyurethane composition for paving an eco-friendly road and method of process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020130060389A KR20140139814A (en) | 2013-05-28 | 2013-05-28 | Polyurethane composition for paving an eco-friendly road and method of process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR20140139814A true KR20140139814A (en) | 2014-12-08 |
Family
ID=52457945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020130060389A KR20140139814A (en) | 2013-05-28 | 2013-05-28 | Polyurethane composition for paving an eco-friendly road and method of process thereof |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR20140139814A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101673323B1 (en) | 2015-05-07 | 2016-11-09 | (주)대한솔루션 | Apparatus for forming polyurethane form |
| KR101683546B1 (en) | 2015-09-18 | 2016-12-08 | (주)대한솔루션 | Apparatus for forming polyurethane foam |
| CN115448642A (en) * | 2022-08-31 | 2022-12-09 | 上海科妥建设工程咨询合伙企业(有限合伙) | Asphalt cold-patch material and preparation method thereof |
-
2013
- 2013-05-28 KR KR1020130060389A patent/KR20140139814A/en not_active Application Discontinuation
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101673323B1 (en) | 2015-05-07 | 2016-11-09 | (주)대한솔루션 | Apparatus for forming polyurethane form |
| KR101683546B1 (en) | 2015-09-18 | 2016-12-08 | (주)대한솔루션 | Apparatus for forming polyurethane foam |
| CN115448642A (en) * | 2022-08-31 | 2022-12-09 | 上海科妥建设工程咨询合伙企业(有限合伙) | Asphalt cold-patch material and preparation method thereof |
| CN115448642B (en) * | 2022-08-31 | 2023-08-04 | 上海科妥建设工程咨询合伙企业(有限合伙) | Asphalt cold-patch material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Cong et al. | The use of polyurethane for asphalt pavement engineering applications: A state-of-the-art review | |
| KR101489892B1 (en) | Composite materials comprising aggregate and an elastomeric composition | |
| JP5111395B2 (en) | Ballast and method for producing ballast | |
| US20180312437A1 (en) | Polyurethane, modified asphalt and mixture material containing same and pavement structure | |
| KR102079572B1 (en) | Dual complex waterproof sheet and waterproof method using the same | |
| CN102719187A (en) | Single-component asphalt polyurethane waterproof coating and preparation method thereof | |
| RU2669384C2 (en) | Method for improving crack resistance of polyisocyanurate-containing reaction products | |
| CN102007083A (en) | Multicomponent composition for filling and/or grouting cracks, flaws, and cavities in structures or earth and stone formations | |
| KR20140139814A (en) | Polyurethane composition for paving an eco-friendly road and method of process thereof | |
| EP2785667B1 (en) | Repair method for road pavings, in particular for open-pore asphalts | |
| EP2370636A1 (en) | Recycling of road surfaces | |
| KR20140029651A (en) | Polyurethane composition for using waterproofing | |
| US20080044661A1 (en) | Isocyanate Composition Comprising a Vegetable Oil and Composites Therefrom | |
| JP2010121350A (en) | Polyurethane composition for elastic pavement | |
| JP2019529304A (en) | Particles coated with adhesion promoters for polymer concrete compositions | |
| JP2006111855A (en) | Two-pack type curing composition and on-site-applicable elastic pavement material composition using the same | |
| JP4074526B2 (en) | Room temperature asphalt mixture and its construction method | |
| EP3402926B1 (en) | Road surfacing composition | |
| KR100982480B1 (en) | Manufacturing method of polyurethane-epoxy hybrid resins | |
| CN1250671C (en) | Polysulfur sealing gum reinforced using polythiourea | |
| KR100416077B1 (en) | Plate for protecting street trees | |
| JP2021046760A (en) | Floor slab waterproof structure, and manufacturing method and materials used for the same | |
| KR20200133926A (en) | Rapidly hardening polymer compound for reinforcement of concrete structure | |
| DE102010031311A1 (en) | Method for the production of cover layer or supporting layer for roads, paths and other traffic areas, comprises producing a mixture containing mineral materials, and a polymer reaction mixture and/or if necessary further additives | |
| JP4909956B2 (en) | Roadbed crushed caking agent and roadbed stabilization method using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A201 | Request for examination | ||
| E902 | Notification of reason for refusal | ||
| E601 | Decision to refuse application |