KR102265535B1 - Self-healing asphalt composition and manufacturing, waterproofing structure method thereof - Google Patents

Abstract

The present invention relates to self-healing rubber asphalt, a preparation method thereof, and a waterproofing method using the self-healing rubber asphalt. More particularly, the asphalt comprises: 60 to 80 wt% of petroleum asphalt; 10 to 30 wt% of plasticizer; 1 to 10 wt% of ionomer; 1 to 10 wt% of thermoplastic rubber; 1 to 10 wt% of polymer resin; 1 to 20 wt% of filler; and 1 to 10 wt% of tackifier. Therefore, the present invention provides the self-healing rubber asphalt, the preparation method thereof, and the waterproofing method using the self-healing rubber asphalt, in which a supramolecular polymer having a non-covalent bond with a polymer having a high interatomic bonding force was mixed with asphalt to form a supramolecular complex network structure. Then, a microcrack interfaces in the rubber asphalt compound stick to each other, to suppress the growth of microcracks and give a self-healing ability. Then, a sheet-type packaging fiber coated or impregnated with an antioxidant and asphalt is installed on an upper part, to induce an integration with a waterproofing layer (rubber asphalt compound) located at an upper portion, thereby preventing the loss of more than the molecular unit of the rubber asphalt compound and blocking ultraviolet rays. Accordingly, the physical properties of the rubber asphalt compound are maintained for a long time to prevent cracking.

Description

Self-healing rubber asphalt, manufacturing method thereof, and waterproofing method using self-healing rubber asphalt {SELF-HEALING ASPHALT COMPOSITION AND MANUFACTURING, WATERPROOFING STRUCTURE METHOD THEREOF}

The present invention relates to a self-healing rubber asphalt, a manufacturing method thereof, and a waterproofing method using self-healing rubber asphalt. In particular, the rubber asphalt has self-healing ability by using covalent bonds between complex polymers and non-covalent bonds of supramolecular complex networks. Self-healing rubber asphalt and its self-healing rubber asphalt that provides self-healing ability to the rubber asphalt coating waterproofing layer installed on the bridge deck or slab structure subjected to traffic load, and installs sheet-type packaging fibers to prevent oxidation and cracks It relates to a manufacturing method and a waterproofing method using self-healing rubber asphalt.

In general, as time goes by, the physical properties of asphalt are embrittled by oxides such as chitons and carboxylic acids, which are generated by molecular cutting by ultraviolet rays and an oxidation reaction between oxygen and asphalt hydrocarbons, and cracks occur.

In particular, asphalt-based road pavement materials or waterproofing materials that are subjected to environmental loads such as temperature changes and vehicle traffic loads may deteriorate faster and may easily crack.

Currently, there are many crack repair methods such as sealant treatment, but there is no technology to prevent cracks by sealing microcracks.

For the purpose of repairing cracks revealed so far, the asphalt surface is treated with a sealant that protects the asphalt surface from environmental degradation and moisture penetration, or the original asphaltene and malten ratio is restored to restore the properties of the aged asphalt to the original asphalt. The asphalt surface is sometimes treated with a rejuvenator designed to change its properties.

However, these chemicals only work on the asphalt surface and have the disadvantages of being non-continuous and only one-time use. Another problem is that they are for crack repair, not crack prevention.

That is, the method described above is a crack repair method, not a crack prevention or prevention method, and has a problem that requires a lot of time and effort for the operation in that it requires a manual operation of the operator.

Registered Patent No. 10-1025011 Registered Patent No. 10-1524934

The present invention has been devised to solve the above problems, and by using the covalent bond between complex polymers and the non-covalent bond of the supramolecular complex network, the rubber asphalt has self-healing ability, so that the bridge deck or slab structure subjected to traffic load Self-healing rubber asphalt that gives self-healing ability to the waterproofing layer of the rubber asphalt coating installed in the building and ensures long life by installing sheet-type packaging fibers to prevent oxidation and cracking, its manufacturing method, and waterproofing method using self-healing rubber asphalt Its purpose is to provide

The above purpose is, petroleum asphalt 60 to 80% by weight, plasticizer 10 to 30% by weight, ionomer 1 to 10% by weight, thermoplastic rubber 1 to 10% by weight, polymer resin 1 to 10% by weight, filler 1 to 20 It is achieved by self-healing rubber asphalt, characterized in that it is composed of 1 to 10% by weight of the tackifier.

On the other hand, for the above purpose, 60 to 80% by weight of petroleum asphalt, 10 to 30% by weight of plasticizer, 1 to 10% by weight of ionomer, and 1 to 10% by weight of thermoplastic rubber are added to a heating stirrer and heated to 100 to 200 ℃. An asphalt mixture generating step of heating and mixing for 60 to 180 minutes to produce a modified asphalt; When the asphalt mixture is produced, 1 to 10% by weight of a polymer resin, 1 to 20% by weight of a filler, and 1 to 10% by weight of a tackifier are added and heated and mixed at 140 to 190°C for 60 to 80 minutes, characterized in that It is also achieved by the manufacturing method of self-healing rubber asphalt.

In addition, the above object, the base surface cleaning step (S1) of maintaining the surface dry state after removing the latency, rust, foreign substances of the structure base surface 102 and repairing the deteriorated area; an adhesive layer forming step (S2) of forming an adhesive layer 104 by applying an asphalt-based or resin-based primer to the base surface 102 of the structure by the base surface cleaning step; a coating film waterproofing layer forming step (S3) of forming a coating film waterproofing layer 106 by laying the self-healing rubber asphalt on the adhesive layer 104 to a thickness of 0.5 to 3.0 mm; A sheet layer forming the sheet layer 108 by laying the sheet-type packaging fiber 108 with a thickness of 0.5 to 3.0 mm formed by impregnating or coating the asphalt containing antioxidant on the coating film waterproof layer 106 with a nonwoven fabric or felt. It is also achieved by a waterproofing method using self-healing rubber asphalt, characterized in that it includes a step (S4).

And, the above object is, after removing foreign substances such as latency and rust of the base surface of the structure and repairing the deteriorated part, the base surface cleaning step (S11) of maintaining the surface dry state; an adhesive layer forming step (S22) of forming an adhesive layer 104 by applying an asphalt-based or resin-based primer to the base surface of the structure according to the base surface cleaning step; a first waterproofing layer forming step (S33) of forming a first waterproofing layer 112 by laying 0.5 to 3.0 mm of the self-healing rubber asphalt on the adhesive layer 104; A first sheet layer 114 is formed by laying a sheet-type packaging fiber 202 with a thickness of 0.5 to 3.0 mm formed by impregnating or coating asphalt with an antioxidant on the first waterproofing layer 112 on a nonwoven fabric or felt. A first sheet layer forming step (S44) and; A second coating film waterproofing layer is formed by laying 0.5 to 3.0 mm of self-healing rubber asphalt according to any one of claims 1 and 2 on the first sheet layer 114 to form a second coating film waterproof layer 116 Step (S55) and; A second sheet layer 118 is formed by laying a sheet-type packaging fiber 202 having a thickness of 1.0 to 3.0 mm formed by impregnating or coating asphalt with an antioxidant on the second coating film waterproof layer 116 on a nonwoven fabric or felt. It is also achieved by a waterproofing method using self-healing rubber asphalt, characterized in that it includes a second sheet layer forming step (S66).

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Here, it is preferable that the mesh network 204 having a grid size of 5 to 20 mm is laminated and installed on the sheet-shaped packaging fiber 202 .

In addition, the thickness of the first sheet layer 114 is preferably formed to be relatively thinner than the thickness of the second coating film waterproofing layer 116 .

The present invention is to form a complex supramolecular complex network structure by mixing a supramolecular type polymer having a high covalent bond and a non-covalent bond with a polymer having a high covalent bond with asphalt, so that the microcrack interface in the rubber asphalt compound sticks to each other. It gives self-healing ability while suppressing crack growth, and installs sheet-type pavement fiber coated or impregnated with antioxidant and asphalt on the upper part to induce integration with the waterproof coating layer (rubber asphalt compound) located at the bottom, especially multi-layer structure By increasing the adhesive force between the waterproofing layers when forming the waterproofing layer of This has the effect of preventing cracks.

1 is a flowchart showing a first embodiment of a waterproofing method using a self-healing rubber asphalt according to the present invention in time series.
Figure 2 is a view showing a construction cross-section according to the first embodiment of the waterproof construction method using the self-healing rubber asphalt of the present invention.
3 is a flowchart showing a second embodiment of a waterproofing method using a self-healing rubber asphalt according to the present invention in time series.
Figure 4 is a view showing a construction cross-section according to the fourth embodiment of the waterproof construction method using the self-healing rubber asphalt of the present invention.
5 is a view showing another embodiment of the sheet-type packaging fiber according to the present invention.

The present invention is a self-healing rubber asphalt, a manufacturing method of self-healing rubber asphalt, and a waterproofing method using self-healing rubber asphalt. Hereinafter, the composition of the self-healing rubber asphalt will be described, and then the self-healing rubber asphalt manufacturing method will be described, and finally A waterproofing method using self-healing rubber asphalt will be described.

<Self-healing rubber asphalt>

The self-healing rubber asphalt is 60 to 80% by weight of petroleum asphalt, 10 to 30% by weight of plasticizer, 1 to 10% by weight of ionomer, 1 to 10% by weight of thermoplastic rubber, 1 to 10% by weight of polymer resin, filler It is composed of 1 to 20% by weight and 1 to 10% by weight of a tackifier.

Of the self-healing rubber asphalt composition, petroleum asphalt can be selected from one or more of straight, cutback, emulsified, and blown asphalt as a main component, and when used alone, straight asphalt flows down at high temperatures, and is damaged even by small external impacts , it is preferable to use a petroleum asphalt penetration of about 40 or more, and 60 to 80% by weight is added based on 100% by weight of the total self-healing rubber asphalt composition, because a phenomenon of easy separation may occur due to a decrease in bonding strength with each mixture. do.

In addition, the plasticizer in the self-healing rubber asphalt composition may be selected from at least one of paraffinic oil, naphthenic oil, aromatic oil, or vegetable oil such as soybean, corn, etc. , used as a composition enhancer for fluidity, dispersibility, and physical properties of asphalt, and has a low viscosity when added, thereby improving initial adhesion and helping to improve permeability to an adherend.

When less than 10 wt% of a plasticizer is added to 100 wt% of the self-healing rubber asphalt composition, it is not possible to suppress a sudden change in physical properties, and it is difficult to properly control the working temperature, and also to secure improvement in tensile performance or heat resistance It is difficult to do, and when 30% by weight or more is added, plasticity is lost and morphological stability cannot be maintained.

And, in the self-healing rubber asphalt composition, the ionomer is a copolymer of ethylene and methylacrylic acid, which has cross-linking by metal ions such as Na, K, Mg, and Zn in the carboxyl group. As a generic term for polymers, ionomers have good adhesion to other polymers or metal foils and good adhesion to oils and oils.

The amount of methyl acrylic acid or methylacrylate in the ionomer is about 4 to 15%, and the smaller the amount of methyl acrylate, the smaller the metal adhesion, the stiffness, and the transmittance, while the adhesive strength increases.

The characteristic of ionomer resin is that when the ion crosslinked molecule is heated, the crosslink is broken and thermal adhesiveness appears, so that the processability is improved, and when cooled, it is ion crosslinked again and becomes strong, so the mechanical properties are excellent. In addition, it has excellent oil and cold resistance, and excellent resistance to strong acids, strong alkalis, grease oils, organic solvents and water.

In general, the supramolecular sieve polymer having non-covalent bonds has a disadvantage in that its supramolecular attraction has a lower binding energy compared to the covalent bond, and its properties are similar to rubber, so it is difficult to use as a structural material due to weak mechanical strength.

In the present invention, by mixing rubber with thermoplastic reversible covalent bonds and ionomers whose molecular chains are ionic bonds in the present invention to form a supramolecular complex network, external damage and microcracks such as cracks or scratches generated in rubber asphalt are self-contained. that made it heal

Here, the self-healing network using a supramolecular sieve is prepared in a mixed form of a linear supramolecular sieve and a nonlinear supramolecular sieve. The linear supramolecular sieve has high chain mobility but few crosslinking points, and the nonlinear supramolecular sieve has low chain mobility, so it has high chain mobility and many Since it is important to properly mix the linear and non-linear supramolecular sieves to have a crosslinking point at the same time, it is preferable to add 1 to 10% by weight of the ionomer based on 100% by weight of the total weight of the self-healing rubber asphalt composition.

That is, a supramolecular complex network is formed by mixing a linear supramolecular sieve in which a single molecule capable of multi-hydrogen bonding is introduced at the end of the linear oligomer and a non-linear supramolecular sieve having a single molecule capable of multi-hydrogen bonding at the end of the non-linear oligomer. to form

The ionomer used in the present invention is an olefin-based carboxyl ionomer in the form of powder or granules, a polymer copolymerized with ethylene and (meth)acrylic acid. Due to the electrostatic attraction of the neutralizing cation of sodium (Na) or zinc (Zn), the carboxyl anion is It acts as a reversible cross-linking between supramolecular network polymer chains.

In general, olefinic carboxyl ionomers consist of about 75 to 80% of hydrogen bonds and 15 to 20% of ionic bonds, and form non-covalent hydrogen bonds with maltene in asphalt and ionic bonds with metal compounds. .

In addition, the ethylene-based ionomer used in the present invention has similar physical properties to the ethylene-based resin and is easy to mix, but in the present invention, compatibility with asphalt is improved by mixing the EVA polymer resin with polarity, and the ionomer The complex self-healing ability was increased by inducing the binding force between the dipoles of the carboxyanion of EVA and the EVA.

When a complex network structure in the form of supramolecules is formed based on non-covalent bonds and covalent bonds, the interaction force between molecules and atoms is re-formed through molecular recognition and rearrangement at the time of initial fracture by external impact, enabling healing and repairing damaged areas. Damaged parts can be restored several times just by touching each other.

Among the self-healing rubber asphalt compositions, the thermoplastic rubber is CR (Polychloroprene Rubber), IIR (Isoprene Isobutylene Rubber), IR (Isoprene Rubber), PIB (Poly Iso Butylene), SBS (Styrene Butadiene Styrene), SBR (Styrene Butadiene Rubber) , SEBS (Styrene Ethylene Butadiene Styrene), SIS (Styrene Isoprene Styrene), or one or more of these polymers are selected. When several rubbers are mixed, it is preferable to mix them all in the same ratio and adjust the elastic modulus of the asphalt mixture. It improves the durability of asphalt by absorbing shock during external (repetitive heavy impact) pressure, and increases plasticity resistance at high temperature and crack resistance at low temperature.

The thermoplastic rubber forms a network with asphalt to improve interfacial adhesion to increase high elasticity, heat resistance, tensile strength and plastic deformation resistance, and to improve flow-down or deformation at high temperatures and cracks and breakages in low-temperature environments in winter. have.

In the styrene-butadiene-based thermoplastic rubber, the butadiene chain block reacts with malten such as an aromatic compound of petroleum asphalt by heat and shear force to swell about 20% in volume or to soften the isoprene chain, thereby increasing the physical crosslinking point and making the network structure dense. have.

As an example of the thermoplastic rubber polymer, the EPP polymer (tentative name) is obtained by polymerization of SEBS and PP, and has both the properties of an elastomer and a plastomer. It suppresses breakage and has polarity, so it has good compatibility with asphalt and excellent weather resistance, making the product durable.

The thermoplastic rubber used in the present invention has a reversible covalent bond, so that a rubber asphalt having excellent strength can be obtained, and it is preferable to use a styrenic rubber.

More specifically, the mechanical properties are improved by the styrene chain block, which is a hard polymer of the block copolymer, and shear stirring so that the ionomer can be evenly mixed with the butadiene or isoprene chain block, which are soft polymers expanded when mixed with asphalt, It was induced to form a complex network structure with non-covalent bonds (ionic bonds) and covalent bonds of block copolymers.

In addition, for high tensile strength, it is preferable to use a styrene-butadiene rubber having a styrene content of 25% to 50% relative to 100% butadiene, and the higher the styrene content, the higher the temperature crack resistance. If it is difficult and the butadiene content is too large, it is easy to age and the plastic deformation resistance is low.

When less than 1 wt% of thermoplastic rubber is added to 100 wt% of the self-healing rubber asphalt composition, the high modulus of elasticity is lowered, the impact absorption rate is lowered, the durability is lowered, and when more than 10 wt% is added, compatibility with asphalt is lowered and the price economical.

Among the self-healing rubber asphalt composition, the polymer resin is a thermoplastic olefin TPO (thermo plastic olefin) such as EVA, PP, PE, etc., which is soft and has strong tensile strength to improve breakage inhibition under external pressure. The total 100 of the self-healing rubber asphalt composition When less than 1% by weight of the polymer resin is added with respect to weight%, the effect of inhibiting breakage on tensile strength and pressure is insignificant, and when it exceeds 10% by weight, compatibility with petroleum asphalt is remarkably deteriorated.

Here, when the petroleum asphalt and the thermoplastic olefin are mixed, the thermoplastic olefin has somewhat poor compatibility with the petroleum asphalt, so a compatibilizer capable of increasing the affinity with the asphalt is required. In this case, the olefinic ionomer is the petroleum asphalt of the thermoplastic olefin. A supramolecular complex network is formed while enhancing compatibility with

Fillers include inorganics such as talc, calcium carbonate, pulp, silicon dioxide, limestone, magnesium silicate, slaked lime, black carbon, aromatic amines, phenols, phosphorus, ionic, polycarboxylic acid, wax, celluloid fiber, clay, By adding one or two or more of the oils and fats such as sawdust, the compatibility with asphalt and ionomer and the adhesive strength of the composition can be improved by increasing the binding force, reducing the price, and imparting polarity. By absorbing the plasticizer, the mixture becomes soft and cold resistance is improved and to prevent spillage at high temperatures.

It is preferable to mix the filler in an amount of 1 to 20% by weight based on 100% by weight of the total self-healing rubber asphalt composition.

Among the self-healing rubber asphalt composition, the tackifier includes one or two or more of acrylic resin, phenolic resin, terpene resin, natural resin, petrochemical resin, PVB resin, polybutene, and bonding strength between polymers, adhesive strength, heat resistance, etc. This is improved, and a high molecular weight rosin ester obtained by reacting a petrochemical resin with a natural resin may be added, or a terpene phenolic resin may be added to maximize post adhesion, heat resistance and bonding strength.

When less than 1% by weight of the tackifier is added to the total 100% by weight of the self-healing rubber asphalt composition, the effect of improving the bonding performance between the mixed raw materials and improving the adhesion is insignificant, and when more than 10% by weight is added, the viscosity increases excessively, Agglomeration occurs during mixture production and installation, and the product price increases due to an increase in the content of tackifiers, which are relatively more expensive than low-cost raw materials. In addition, the phenomenon of hardening at low temperatures and reduced fluidity cannot be avoided. function is rather deteriorated.

The manufacturing method of the present invention self-healing rubber asphalt having the composition as described above will be described as follows.

60 ~ 80% by weight of petroleum asphalt, 10 ~ 30% by weight of plasticizer, 1 ~ 10% by weight of ionomer, and 1 ~ 10% by weight of thermoplastic rubber are put into a heating stirrer and heated and mixed at 100 ~ 200℃ for 60 ~ 180 minutes to carry out the step of creating an asphalt mixture to produce modified asphalt.

That is, in the present invention, the ionomer of Ethylene Methylacrylic Acid (EMAA) or Ethylene Acrylic Acid (EAA) in petroleum asphalt, plasticizer, and thermoplastic rubber is first heated and mixed at a temperature of 140 to 190° C. for 2-3 hours. By first mixing an ionomer with good compatibility with rubber asphalt, a supramolecular complex network with ionic bonds is formed in the network structure of rubber asphalt, and not only self-healing performance but also compatibility with polymer resin is improved.

That is, the mechanical properties of rubber asphalt are improved by the covalent bonding force of the thermoplastic rubber, and when mixed with asphalt, the non-covalent ionic bond of the ionomer and the polymer rubber are mixed by shear stirring so that the ionomer can be evenly mixed with the chain block of the expanded and softened polymer rubber. It is to induce the formation of a complex network structure having covalent bonds.

Here, for high tensile strength, it is preferable to use a styrene-butadiene rubber having a styrene content of 25% to 50% relative to 100% butadiene, and the higher the styrene content, the higher the temperature cracking resistance. If it is difficult and the butadiene content is too large, it is easy to age and the plastic deformation resistance is low.

When the asphalt mixture is produced, 1 to 10% by weight of a polymer resin, 1 to 20% by weight of a filler, and 1 to 10% by weight of a tackifier are added and heated and mixed at a temperature of 140 to 190℃ for 60 minutes or more to obtain self-healing rubber asphalt. will be manufacturing

The above-mentioned polymer resin is a thermoplastic olefin and has both the characteristics of an elastic body and a plastic body, so that it is possible to obtain rubber asphalt having excellent strength.

On the other hand, when the self-healing rubber asphalt is manufactured as described above, a waterproofing method using the self-healing rubber asphalt can be carried out, and the present invention presents the waterproofing method as the first and second examples.

First, in the first embodiment, as shown in FIGS. 1 and 2, a cleaning and combustion operation to remove foreign substances such as rust or latency of the base surface 102 using shot blasting or water jet, etc. Performs the surface cleaning step (S1) for repairing the deteriorated part.

Then, the adhesive layer forming step (S2) of forming the adhesive layer 104 by applying an asphalt-based or resin-based primer to the base surface 102 of the structure by the base surface cleaning step of 0.4 L/m 2 or more with a roller and a duster is performed.

In addition, the self-healing rubber asphalt is placed on the upper portion of the adhesive layer 104 by 0.5 to 3.0 mm using a push stick or application equipment to form a self-healing waterproofing layer 106. The coating film waterproofing layer forming step (S3) as shown in FIG. Conduct.

Since the hydrogen bond between the ionomer and asphalt, which is one of the core self-healing cores of the self-healing rubber asphalt, can be easily oxidized by ultraviolet rays, in the present invention, oxidation and cracking are caused by adding an antioxidant function to the pavement fiber using carbon black or the like. prevent occurrence.

That is, the upper portion of the waterproofing layer 106 is impregnated or coated with rubber asphalt or blown asphalt containing an antioxidant in a nonwoven fabric or felt, and a sheet-type packaging fiber having a thickness of 0.5 to 3.0 mm is laid to form the sheet layer 108. At this time, the sheet-type packaging fiber is installed by a butt joint or an overlap joint method of 50 mm or more using a manpower or a sheet installation device, and the joint between the sheets is sealed with a coating film waterproofing material, whereby the sheet layer forming step (S4) is carried out.

The second embodiment of the waterproofing method using the self-healing rubber asphalt is for forming a multi-layer waterproofing layer, and the base surface cleaning step (S11), the adhesive layer forming step (S22), the first coating film waterproofing layer forming step (S33) of FIG. ), the first sheet layer forming step (S44) is constructed in the same way as the base surface cleaning step (S1), the adhesive layer forming step (S2), the coating film waterproofing layer forming step (S3), and the sheet layer forming step (S4) of the first embodiment do.

And, after the first sheet layer forming step (S44) is performed as described above, after about 30 minutes or more has elapsed so that the first coating film waterproof layer 112 is sufficiently cured, the second coating film waterproof layer 116 is applied to the first sheet layer ( 114) Install it on the top.

Here, the thickness of the first sheet layer 114 is preferably formed to be relatively thinner than the thickness of the second coating film waterproofing layer 116 .

At this time, it is possible to achieve integration with the first sheet layer 114 and the first waterproof film waterproof layer 112 positioned below by the adhesive force and the installation temperature of the second coating film waterproof layer 116 .

In order to minimize the uneven curved portion of the second waterproofing layer 116 and to form a continuous surface, the first sheet layer 114 should be thinner than the waterproofing layer, and the joint between the sheets of the second sheet layer 118 is the first The sheet layer 114 is alternately constructed as shown in FIG. 4 so as not to overlap in the same place as the joint.

The packaging fiber for oxidation and crack prevention is a sheet with a thickness of 0.5 to 3.0 mm as rubber asphalt or blown asphalt containing antioxidants is impregnated or coated in a nonwoven fabric or felt of 50 g/m2 or more made of fibers with excellent heat resistance such as glass fiber. In the form of rubber asphalt, the first coating film waterproofing layer 112 and the second coating film waterproofing layer 116 are installed on the upper part.

The antioxidant may be a mixture of a UV-blocking agent that is carbon black or titanium dioxide and HALS or a phenol-based primary antioxidant, and it is preferable to use carbon black and HALS.

Primary antioxidant, a radical scavenger, makes unstable free radicals (radicals) generated by oxidation into a stable form, and carbon black, a by-product of the waste tire thermal decomposition method, blocks UV light and is effective in preventing photodegradation. When mixed with asphalt, the resistance to plastic deformation of asphalt is improved.

In the present invention, carbon black in the form of a lump may be milled into a powder of 0.075 mm or less, and thus, oxidation of rubber asphalt that is melted and mixed at a high temperature can be prevented.

It is manufactured by mixing black carbon or HALS with rubber asphalt or blown asphalt by heating, melting, shearing, stirring, and then coating the core substrate made of fibers with excellent heat resistance or impregnating the core substrate with the melt-mixed asphalt solution.

In particular, the sheet-type packaging fiber 202 may be a mixture of a commonly used nonwoven or woven fabric and grid-type fiber, and when a lot of durability is required, the size of the grid as shown in FIG. 5 on the top It is preferable to install and use a mesh network 204 of 5 to 20 mm.

When constructing asphalt concrete pavement by the mesh network 204, it is possible to prevent damage to the pavement fibers due to compaction of the upper asphalt concrete aggregate, and the sheet-type pavement fibers 202 are attached to the tracks or wheels of heavy paving equipment and rolled up. loss can be prevented.

The sheet-type packaging fiber 202 not only prevents the loss of more than molecular units while reinforcing the tensile strength of the self-healing coating waterproofing layers 106, 112, 116 located below it, but also serves to suppress the growth of microcracks. do.

By adding a UV blocking function to the sheet layers 108, 114, and 118 installed on the waterproof coating layer 106, 112, 116, the tensile strength of the waterproof coating layer 106, 112, 116 and the molecular weight The effect of preventing cracks can be obtained by preventing more than a unit of loss (bleeding) and at the same time blocking ultraviolet rays.

The self-healing rubber asphalt or compound layer according to the present invention is based on intramolecular or intermolecular non-covalent bonds, and multiple molecules gather through molecular recognition and self-assembly and use the attraction between supramolecules, which are organized macromolecules, in the form of supramolecules in polymers. It is a method that can be healed by forming a network structure to re-form intermolecular interaction forces. It is called a supramolecular network-type self-healing polymer, and has the advantage of being able to reversibly heal at the molecular level without damaging the material several times.

102: base surface 104: adhesive layer
106: coating film waterproof layer of the first embodiment
108: sheet layer of the first embodiment
112: the first coating film waterproofing layer of the second embodiment
114: first sheet layer of the second embodiment
116: second coating film waterproof layer of the second embodiment
118: second sheet layer of the second embodiment
202: packaging fiber 204: mesh network

Claims (6)

Petroleum asphalt 60 ~ 80% by weight, plasticizer 10 ~ 30% by weight, ionomer 1 ~ 10% by weight, thermoplastic rubber 1 ~ 10% by weight, polymer resin 1 ~ 10% by weight, filler 1 ~ 20% by weight, tackifying Self-healing rubber asphalt, characterized in that it is composed of 1 to 10% by weight.
60 ~ 80% by weight of petroleum asphalt, 10 ~ 30% by weight of plasticizer, 1 ~ 10% by weight of ionomer, and 1 ~ 10% by weight of thermoplastic rubber are put into a heating stirrer and heated and mixed at 100 ~ 200℃ for 60 ~ 180 minutes. An asphalt mixture generating step of generating an asphalt mixture that is modified asphalt;
When the asphalt mixture is produced, 1 to 10% by weight of a polymer resin, 1 to 20% by weight of a filler, and 1 to 10% by weight of a tackifier are added and heated and mixed at 140 to 190°C for 60 to 80 minutes, A method of manufacturing self-healing rubber asphalt.
a base surface cleaning step (S1) of removing latitude, rust, and foreign substances from the base surface of the structure 102, repairing the deteriorated area, and maintaining the surface dry state;
an adhesive layer forming step (S2) of forming an adhesive layer 104 by applying an asphalt-based or resin-based primer to the base surface 102 of the structure by the base surface cleaning step;
60 to 80% by weight of petroleum asphalt, 10 to 30% by weight of plasticizer, 1 to 10% by weight of ionomer, 1 to 10% by weight of thermoplastic rubber, 1 to 10% by weight of polymer resin, filler on the upper portion of the adhesive layer 104 A coating film waterproofing layer forming step (S3) of laying a self-healing rubber asphalt composed of 1 to 20% by weight and 1 to 10% by weight of a tackifier to a thickness of 0.5 to 3.0 mm to form a waterproofing layer 106;
A sheet layer forming the sheet layer 108 by laying the sheet-type packaging fibers 108 with a thickness of 0.5 to 3.0 mm formed by impregnating or coating asphalt with an antioxidant on the coating film waterproof layer 106 on a nonwoven fabric or felt. A waterproofing method using self-healing rubber asphalt, characterized in that it comprises a step (S4).
a base surface cleaning step (S11) of removing foreign substances such as latency and rust of the base surface of the structure 102, repairing the deteriorated area, and maintaining the surface dry state;
an adhesive layer forming step (S22) of forming an adhesive layer 104 by applying an asphalt-based or resin-based primer to the base surface 102 of the structure according to the base surface cleaning step;
60 to 80% by weight of petroleum asphalt, 10 to 30% by weight of plasticizer, 1 to 10% by weight of ionomer, 1 to 10% by weight of thermoplastic rubber, 1 to 10% by weight of polymer resin, filler on the upper portion of the adhesive layer 104 A first waterproofing layer forming step (S33) of forming a first waterproofing layer 112 by laying 0.5 to 3.0 mm of self-healing rubber asphalt composed of 1 to 20% by weight and 1 to 10% by weight of a tackifier;
A first sheet layer 114 is formed by laying a sheet-type packaging fiber 202 having a thickness of 0.5 to 3.0 mm formed by impregnating or coating asphalt with an antioxidant on the first waterproofing layer 112 on a nonwoven fabric or felt. A first sheet layer forming step (S44) and;
60 to 80% by weight of petroleum asphalt, 10 to 30% by weight of plasticizer, 1 to 10% by weight of ionomer, 1 to 10% by weight of thermoplastic rubber, 1 to 10% by weight of polymer resin on the first sheet layer 114 %, 1 to 20% by weight of filler, and 1 to 10% by weight of tackifier, 0.5 to 3.0 mm of self-healing rubber asphalt is installed to form the second waterproofing layer 116 (S55) Wow;
The second sheet layer 118 by laying the sheet-type packaging fiber 202 with a thickness of 1.0 to 3.0 mm formed by impregnating or coating asphalt with an antioxidant/paper agent on a nonwoven fabric or felt on the second waterproofing layer 116. A waterproofing method using self-healing rubber asphalt, characterized in that it comprises a second sheet layer forming step (S66) of forming a.
5. The method of claim 3 or 4,
A waterproofing method using self-healing rubber asphalt, characterized in that a mesh network 204 having a grid size of 5 to 20 mm is laminated on an upper portion of the sheet-type packaging fiber 202 .
5. The method of claim 4,
A waterproofing method using self-healing rubber asphalt, characterized in that the thickness of the first sheet layer 114 is relatively thinner than the thickness of the second coating film waterproofing layer 116 .

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