JPH10147767A - Paving mixture and cured product thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a paving mixture which can be applied at ordinary temperature and is used as a paving material for e.g. a sidewalk surface course and a cured product thereof. SOLUTION: This mixture comprises 100 pts.wt. aggregate, 1-5 pts.wt. filler, 1-15 pts.wt. hydraulic inorganic material, 2-12 pts.wt. modified asphalt emulsion containing an epoxidized diene block copolymer and 0.2-3 pts.wt. thermosetting resin emulsifier. The filler and the inorganic material should be dispersed in a mixture of the modified asphalt emulsion with the thermosetting resin emulsifier, and the aggregate should be coated with this mixture.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pavement mixture which can be applied at room temperature as a pavement material for a surface layer such as a sidewalk, a general road, an expressway, a passage in a factory yard, an airport and the like, and a cured product thereof.

[0002]

2. Description of the Related Art In recent years, the construction of pavements and a number of structures has dramatically reduced the surface of the soil in and around the city area, preventing penetration of rainwater and the like. For this reason, obstacles such as death of trees, land subsidence, and flooding of rivers due to concentrated torrential rain have occurred. The permeable pavement is introduced to solve such a problem, and permeates and drains rainwater and the like from the pavement road surface to prevent these obstacles.

[0003] The permeable pavement has a porosity of at least 15 to 25% in order to allow rainwater or the like to penetrate into the lower part for the purpose.
Degree required. The mixture of the aggregates is different from that of the ordinary pavement mixture. For example, a pavement mixture containing a large amount of coarse aggregate such as open-grained asphalt concrete is paved, and a cured product obtained by the pavement mixture has poor engagement between the aggregates. For this reason, it is inferior in resistance to deformation against traffic load, and permeable pavement is mainly used for sidewalks.

[0004] On the other hand, asphalt pavement can be rugged, bumpy, uneven due to an increase in traffic volume of large vehicles and weather conditions.
It tends to cause a reduction in flatness and a liquidity phenomenon. Especially,
The pavement surface suffers significant wear due to spike tires and tire chain wear in winter. For this reason, puddles are formed on the pavement surface during rainfall, and in addition to the hydroplaning phenomenon and slippage, visual impairment due to splashing or smoking occurs, which is a traffic safety problem as one of the causes of the accident. Therefore, the practical use of the permeable pavement is also urgently applied to general roads and the like, and permeable pavement is being experimentally implemented in various places. In addition, since the permeable pavement has a large space, the space is preferable for the street pavement of an urban road also in that the space absorbs the traveling sound of the vehicle and has an effect of reducing noise.

[0005]

However, as described above, the water-permeable pavement has larger voids than the ordinary pavement, has less fine particles in the coating mixture, and is expected to have strength due to the effect of engaging the aggregate. Can not. Therefore, in order for the permeable pavement to maintain stability, a bonding material having a strong bonding force for strongly bonding between aggregates is required. In addition, since the permeable pavement is used on general roadways, highways, and the like, the pavement mixture requires a high degree of dynamic stability. Since the preparation and paving of the paving mixture are all carried out under heating, it is necessary to use a binder having a high viscosity at 60 ° C.

As a binder of a paving mixture for permeable pavements, modified asphalt modified with polymers has been used. For example, the "modified asphalt type II" described in the Asphalt Pavement Guidelines issued by the Japan Road Association has a much higher softening point and a higher viscosity at 60 ° C (about 200,000 poise or more). Modified asphalt "and the like. In addition, since the permeable pavement has a large void, it is easily deteriorated under the influence of direct sunlight or air. For this reason, in order to increase the thickness of the binder-containing layer on the surface of the aggregate and to reduce "sagging" during work, it is necessary to increase the viscosity of the binder at high temperatures.

However, these ultra-high-viscosity modified asphalts and other modified asphalts have large fluctuations in viscosity due to temperature changes, so that careful attention must be paid to temperature control when preparing and paving a paving mixture. , There are difficulties in use. Moreover, the use of ultra-high viscosity modified asphalt does not yet provide satisfactory degrees of flow resistance at high temperatures.

[0008]

Means for Solving the Problems The inventor of the present invention coated an aggregate surface with a modified asphalt emulsion and a thermosetting resin emulsion and dispersed a filler and a hydraulic inorganic material in the coating. It was found that a pavement mixture capable of avoiding "drip" in the inside was obtained, and after curing of the pavement mixture, it was found that a pavement material having excellent durability and abrasion resistance could be obtained, thereby completing the present invention.

That is, according to the present invention, 1 to 5 parts by weight of filler, 1 to 1 part by weight of hydraulic
A pavement mixture comprising 5 parts by weight, 2 to 12 parts by weight of a modified asphalt emulsion containing an epoxidized diene block copolymer and 0.2 to 3 parts by weight of a thermosetting resin emulsion. To provide. Further, the filler and the hydraulic inorganic material are dispersed in a mixture of a modified asphalt emulsion and a thermosetting resin emulsion, and the pavement mixture is characterized in that the mixture covers the surface of the aggregate. To provide. The present invention also provides a cured product of the paving mixture. Hereinafter, the present invention,
This will be described in detail.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The aggregate used in the present invention may be an aggregate used for ordinary asphalt pavement. In the present invention, the coarse aggregate that stops on the 2.36 mm sieve, and the coarse aggregate that passes through the 2.36 mm sieve and is set to 0.3 mm.
Both fine aggregates that stop on the 075 mm sieve are referred to as "aggregates". What passes through a 0.075 mm sieve is referred to as “filler”.

The coarse aggregate and fine aggregate used in the present invention include crushed stone, crusher run, screenings, crushed stone dust and sand. In addition, light-colored aggregates, hard aggregates and the like can also be used. For light-colored aggregates, for example,
Luxovite, Sinopearl, aluminum grains, ceramic grains, plastic grains, colored aggregates and the like. Examples of the hard aggregate include emery and silica sand. In addition, an aggregate precoated with asphalt can be used as a part of the aggregate.

The fillers used in the present invention include fillers for screening, stone powder, incinerator ash, clay, talc, fly ash, carbon black and the like.
In addition, rubber powder, cork powder, wood powder, resin powder,
Short fibers such as inorganic fibers, pulp, synthetic fibers, and carbon fibers can be used together as a part of the filler.

The compounding amount of the filler with respect to 100 parts by weight of the aggregate may vary depending on the type of the aggregate, the type of the filler, the composition of the modified asphalt emulsion, and the like, but is usually in the range of about 1 to 5 parts by weight. When the content of the filler is less than 1 part by weight, it is insufficient to form a thick coating film of the modified asphalt emulsion on the surface of the aggregate. On the contrary, the adhesiveness and coatability of the modified asphalt emulsion to the material tend to decrease.

The hydraulic inorganic material used in the present invention includes cement, anhydrous gypsum, gypsum hemihydrate, powdered blast furnace slag, and the like. As cement, ordinary Portland cement, early strength Portland cement, ultra-high strength Portland cement, moderate heat Portland cement, white Portland cement, blast furnace cement, silica cement, fly ash cement, alumina cement, expansion cement,
Sulfur-resistant cement, jet cement, blast furnace colloid cement, colloid cement, ultra-rapid hardening cement, etc.

The amount of the hydraulic inorganic material used is usually 1 to 15 parts by weight, more preferably 3 to 9 parts by weight, per 100 parts by weight of the aggregate. If the amount of the hydraulic inorganic material is less than 1 part by weight, the stability of the cured product of the paving mixture is reduced, while if it exceeds 15 parts by weight, the rigidity of the cured product of the paving mixture is too strong, It loses flexibility and causes cracking. In addition, together with the hydraulic inorganic material,
If necessary, a known cement admixture, for example, a shrinkage compensating material, a hardening accelerator, a hardening retardant, a dispersant, an air promoting agent, a thickener, a water reducing agent, a filler, and the like can be used in combination.

The asphalt in the modified asphalt emulsion used in the present invention is one of petroleum asphalts such as natural asphalt, straight asphalt, blown asphalt, semi-blown asphalt, solvent deasphalted asphalt (for example, propane deasphalted asphalt). Alternatively, two or more kinds can be used. In view of the properties after the modified asphalt emulsion is decomposed or cured, it is preferable to use those having a penetration degree (25 ° C.) of 40 to 300, particularly preferably 40 to 200. is there.

The emulsifier used in the modified asphalt emulsion used in the present invention is classified into cationic, anionic, nonionic and the like depending on the type of the surfactant used. The asphalt emulsion may be any of them. Specifically, coconutamine acetate, stearylamine acetate, coconutamine hydrochloride, stearylamine hydrochloride, alkylamine salts such as stearylamine oleate, lauryltrimethylammonium chloride, stearyltrimethylammonium chloride, alkylbenzyldimethylammonium chloride Etc., cationic surfactants such as benzalkonium-type inverted soaps, alkyl naphthalene sulfonates, dialkyl sulfosuccinates, alkyl diallyl ether sulfonates, alkyl phosphates, polyoxyethylene alkyls and the like. Anionic surfactants such as alkyl allyl ether sulfates, polyoxyethylene alkyl ethers, polyoxyethylene alkyl phenyl ethers, sorbies Emissions fatty acid esters, polyoxyethylene sorbitan fatty acid esters, may be mentioned polyethylene glycol fatty acid ester, a nonionic surfactant of polyoxyethylene alkylamine and the like.

As the modified asphalt emulsion used in the present invention, a modified asphalt obtained by modifying the asphalt with a premix type obtained by mixing an epoxidized diene-based block copolymer with water is mixed in water with an emulsifier, a dispersant, a stabilizer and the like. Oil-in-water type modified asphalt emulsion emulsified and dispersed in water. Alternatively, a modified asphalt emulsion obtained by modifying the epoxidized diene-based block copolymer with a post-mix type in which the block copolymer is directly mixed with an oil-in-water asphalt emulsion can also be used. By blending the modified asphalt emulsion, the mixability with the aggregate, filler and hydraulic inorganic material is improved.

The epoxidized diene-based block copolymer incorporated in the modified asphalt emulsion used in the present invention is as follows. Examples of the vinyl aromatic compound constituting the block copolymer include styrene, α-methylstyrene, vinyltoluene, p-tert-butylstyrene, 1,1
One or more of diphenylethylene and the like can be selected, and among them, styrene is preferably used. Further, as the conjugated diene compound, for example, one or more of butadiene, isoprene, 1,3-pentadiene, 2,3-dimethyl-1,3-butadiene and the like can be used. Among them, butadiene, isoprene and a combination thereof are preferred. It is preferable that the vinyl aromatic compound is 10 to 70% by weight and the conjugated diene compound is 30 to 90% by weight.

The number average molecular weight of the block copolymer having the above structure is from 5,000 to 1,000,000,
It is preferably in the range of 10,000 to 800,000, and the molecular weight distribution [the ratio of the weight average molecular weight (Mw) to the number average molecular weight (Mn) (Mw / Mn)] is preferably 10 or less. Furthermore, the molecular structure of the block copolymer is
It may be linear, branched, radial or any combination thereof.

As a method for producing these block copolymers, any method can be used as long as it has the above-mentioned structure. For example, a vinyl aromatic compound-conjugated diene compound block copolymer can be synthesized in an inert solvent using a lithium catalyst by a method described in Japanese Patent Publication No. 40-23798. Also, the partially hydrogenated block copolymer,
The above-mentioned vinyl aromatic compound-conjugated diene compound block copolymer is obtained by hydrogenation. A method for producing this hydrogenated block copolymer is described in, for example,
-8704 and JP-B-43-6636 can be employed. In particular, a hydrogenated block copolymer synthesized using a titanium-based hydrogenation catalyst exhibiting excellent performance in weather resistance and heat deterioration resistance of the obtained hydrogenated block copolymer is most preferable. -1
No. 33203, JP-A-60-79005 and hydrogenation of a block copolymer having the above structure in an inert solvent in the presence of a titanium-based hydrogenation catalyst by hydrogenation. A block copolymer can be synthesized. In this case, the aliphatic double bond based on the conjugated diene compound of the vinyl aromatic-conjugated diene compound block copolymer is preferably one in which more than 0 and 99% or less are hydrogenated, more preferably more than 0 and 70% or less. Is hydrogenated. These block copolymers and partially hydrogenated block copolymers are on the market and can be easily obtained.

The epoxidized diene block copolymer used in the present invention is obtained by reacting an epoxidizing agent with a block copolymer having the above-mentioned structure or a partially hydrogenated block copolymer to obtain an epoxidized diene-based block copolymer. Epoxidized double bond.

The epoxidized diene-based block copolymer used in the modified asphalt emulsion used in the present invention is obtained by hydrolyzing the above block copolymer or partially hydrogenated block copolymer in an inert solvent, It can be obtained by reacting with an epoxidizing agent such as peracids. As the peracids, formic acid, peracetic acid, perbenzoic acid or a mixture thereof with hydrogen peroxide, or an organic acid with hydrogen peroxide,
Alternatively, a catalytic effect can be obtained by using molybdenum hexacarbonyl in combination with tertiary butyl hydroperoxide. The optimum amount of the epoxidizing agent can be appropriately determined based on the individual epoxidizing agent used, the desired degree of epoxidation, the individual block copolymer used, and the like. The obtained epoxidized diene block copolymer can be isolated by an appropriate method, for example, a method of precipitating with a poor solvent, a method of throwing the polymer into hot water with stirring, and a method of distilling off the solvent, directly. It can be performed by a desolvation method or the like.

The mixing ratio of the asphalt and the epoxidized diene-based block copolymer in the modified asphalt emulsion used in the present invention is 1 to 100 parts by weight of the asphalt.
0 to 100 parts by weight, more preferably 20 to 50 parts by weight. When the amount of the epoxidized diene-based block copolymer is less than 10 parts by weight, the modified asphalt emulsion decomposes and hardens, and the adhesive strength and grasping power of the modified asphalt to the aggregate after curing are inferior, exceeding 100 parts by weight. In such a case, the cohesive force is too strong, so that it is easy to peel off from the aggregate, and it is not economical.

In the modified asphalt emulsion used in the present invention, a rubber or a thermoplastic polymer can be used in combination. By blending a rubber or a thermoplastic polymer, the modified asphalt emulsion can be given a viscosity. Rubbers that can be used include natural rubber, backlash, recycled rubber, styrene-butadiene rubber, styrene
Isoprene rubber, isoprene rubber, polyisobutylene rubber, butadiene rubber, chloroprene rubber, butyl rubber,
Halogenated butyl rubber, chlorinated polyethylene, chlorosulfonated polyethylene, ethylene propylene rubber, EP
Examples thereof include T rubber, olefin rubber, styrene / butadiene block polymer rubber, and styrene / isoprene block polymer rubber. Examples of the thermoplastic polymer include an ethylene-vinyl acetate copolymer, an ethylene-acrylate copolymer, polyethylene, polypropylene, and a vinyl acetate-acrylate copolymer. One or more of these are used. In addition, various shapes and forms of rubber and thermoplastic polymer are used.

Examples of the shape of the rubber or the thermoplastic polymer include powder, granules, latex, emulsion, and water. They are,
It can be used for any of the premix type and the postmix type. In particular, the latex, emulsion, and aqueous thermoplastic polymer is preferably used for the postmix type modified asphalt emulsion. .

The compounding amount of the rubber or the thermoplastic high polymer is 0 to 10 parts by weight with respect to 100 parts by weight of asphalt.
The range is 0 parts by weight. If the amount exceeds 100 parts by weight, the effect of adding the epoxidized diene-based block copolymer is reduced, and the adhesive strength to the aggregate and the grasping power are reduced.

In the modified asphalt emulsion used in the present invention, a thermoplastic solid resin or a solid rubber is used as a tackifier together with the rubber and the thermoplastic polymer to improve adhesion and compatibility. , A liquid resin, a softener, a plasticizer, and the like. For example, rosin and its derivatives, terpene resins and petroleum resins and their derivatives, alkyd resins, alkylphenol resins, terpene phenol resins, cumarone indene resins, synthetic terpene resins, alkylene resins, polyisobutylene, polybutadiene, polybutene, isobutylene and butadiene Polymer, mineral oil,
Animal oils and plant oils such as process oils, anthracene oils, pine oils and pine oils, polymerization oils, plasticizers and the like. Further, an antioxidant, an antioxidant, sulfur and the like can be added. Furthermore, for the purpose of adjusting the viscosity of the modified asphalt emulsion, M
Water-soluble polymer protective colloids such as C, CMC, HEC, PVA, and gelatin can be added.

The concentration of the evaporation residue (solid matter) of the modified asphalt emulsion is preferably 30 to 80% by weight, particularly preferably 50 to 70% by weight. Within this concentration range, it is possible to prevent "sagging" during work and to obtain a pavement material having excellent abrasion resistance after curing. If necessary, a reactive water-soluble synthetic resin or emulsified synthetic resin and a curing agent thereof can be added to the asphalt emulsion as a modified asphalt emulsion.

In the pavement mixture of the present invention, the blended amount of the modified asphalt emulsion is 2 to 100 parts by weight of the aggregate.
It is preferably from 12 to 12 parts by weight, particularly from 5 to 10 parts by weight. The amount of modified asphalt emulsion used is
When the amount is less than 2 parts by weight, the modified asphalt emulsion does not have a sufficient coating thickness on the aggregate, cannot exhibit an excellent function as a pavement compound, and has poor durability. Rather, the stability of the working mixture is reduced.

The thermosetting resin emulsion used in the present invention comprises an "epoxy resin" and a "hardening agent", each of which is in the form of an emulsion. For the emulsification of the epoxy resin, an emulsified product dispersed in water is used. The emulsion may be any of an anionic type, a nonionic type and a cationic type, but generally a nonionic type is preferred. The water content in the emulsion is preferably 50% by weight or less, and particularly preferably 40% by weight or less.

As used herein, the term "epoxy resin" refers to a compound having one or more epoxy groups in a molecule, most commonly a condensate of bisphenol A and epichlorohydrin. For example, a liquid or solid resin containing glycidyl ether of bisphenol A as a main component and manufactured by Yuka Shell Chemical Co., Ltd., "Epicoat 815", "Epicoat 828", "Epicoat 834", "Epicoat 100"
1 "and" Epicoat 1004 ". In addition, glycidyl ether of bisphenol F,
Dimer acid glycidyl ether, polyalkylene glycol glycidyl ether, glycidyl ether of bisphenol A alkylene oxide adduct, aliphatic glycidyl ether, urethane-modified bisphenol A glycidyl ether, aliphatic aromatic co-condensed glycidyl ether,
Vinyl cyclohexane dioxide, dicyclopentanedene oxide, hydrogenated bisphenol A glycidyl ether, epoxidized polybutadiene, and the like can also be used. These epoxy resins can be used alone or in combination of two or more.

The "curing agent" is a compound having a functional group which reacts with an epoxy group in the molecule, and a generally known one can be used. For example, aliphatic polyamines, aromatic polyamines, cycloaliphatic polyamines, aliphatic hydroxypolyamines, modified polyamines thereof, these amine adducts, polyamides, ketamine, tertiary amines,
Examples thereof include imidazole, BF ₃ amine complex, acid anhydride, dimer acid, trimer acid, and liquid polysulfide rubber. These curing agents can be used alone or in combination of two or more. Among the curing agents, those having water solubility or dispersibility in water are used as they are or in a state of being dispersed in water. In the case of a curing agent which is insoluble or has no dispersibility in water, it can be used after being dispersed in water with a suitable surfactant or acid. It is preferable that the water content in the prepared curing agent is small. The quantitative ratio between the epoxy resin and the curing agent is allowed in a relatively wide range centering on the equivalent value that is the basis of the bonding reaction between the two,
It is desirable to use the equivalent value or a ratio close to the equivalent value. In addition, a substance that promotes the curing reaction between the epoxy resin and the curing agent, for example, phenol, cresol, alkylphenol, salicylic acid, triphenyl phosphate, furfuryl alcohol, or the like may be added.

As the thermosetting resin of the thermosetting resin emulsion used in the present invention, a phenol resin may be used. Examples of the phenol resin include a novolak phenol resin and a resol phenol resin. In order to form a thermosetting resin emulsion, these phenol resins are emulsified with the above-mentioned surfactant.

The use amount of the thermosetting resin emulsion of the present invention is usually 0.2 to 3 parts by weight, more preferably 0.3 to 2.0 parts by weight, per 100 parts by weight of the aggregate. When the use amount of the thermosetting resin emulsion is less than 0.2 parts by weight, it is difficult to form a strong coating on the aggregate, and the durability as a paving mixture is inferior. This is because the impact resistance of the paving mixture is rather reduced.

The method of using the modified asphalt emulsion and the thermosetting resin emulsion in the present invention will be described. First, a required amount of a modified asphalt emulsion is mixed in advance with a required amount of an emulsion of an epoxy resin, and this is referred to as an “epoxy resin emulsion”. On the other hand, a “hardening emulsion” is prepared by adding a required amount of a hardening agent to a required amount of a modified asphalt emulsion in advance. Next, a mixture obtained by previously mixing an epoxy resin emulsion and a curing emulsion is added to the aggregate and mixed to produce a paving mixture.
Alternatively, a method may be employed in which either the epoxy resin emulsion or the curing emulsion is first charged into the aggregate, and then the other one of the curing emulsion or the epoxy resin emulsion is charged and mixed. Table 1 shows combinations of components to be blended as the paving mixture of the present invention.

[0037]

[Table 1]

In the pavement mixture of the A type illustrated in Table 1, the porosity of the pavement material, which is a cured product of the pavement mixture, is about 20 to 30%. The preparation method is that a required amount of crushed stone No. 5 is charged into a mixer such as a pug mill mixer, and then coarse sand,
A required amount is added in order of the filler and the hydraulic inorganic material, and the kneading is performed for about 3 to 5 seconds. Thereafter, the required amount of the epoxy resin emulsion and the curing emulsion is added to the mixture, and the mixture is mixed in a mixer for about 15 to 25 seconds. The mixture of the epoxy resin emulsion and the curing emulsion prepared in advance is added thereto. Thus, the paving mixture of the present invention can be obtained. The required amounts of the epoxy resin emulsion and the curing emulsion can be separately added irrespective of the order of addition, and mixed in a mixer to obtain the paving mixture of the present invention. As a result, the surface of the aggregate is coated with a thick film of a mixture of a high-concentration and high-viscosity modified asphalt emulsion and a thermosetting emulsion, and the filler and the hydraulic inorganic material are dispersed in the coating film. "Dare"
Does not occur, and the modified asphalt emulsion is decomposed by the hydration reaction with the hydraulic inorganic material,
After curing, it is possible to obtain a pavement mixture in which a strong thick coating of modified asphalt and a strong coating of thermosetting resin are formed on the aggregate surface. The water content of the pavement mixture is usually only the water content derived from the modified asphalt emulsion, but if it is not sufficient, for example, if the water content for hydration of the hydraulic inorganic material is insufficient or the water content is insufficient. When using materials, fillers and the like together, or when adjusting the consistency to further ensure workability, water may be supplied as appropriate.

The porosity of the cured pavement material of the B type pavement mixture in Table 1 is in the range of 15 to 25%. The method for preparing the B type pavement mixture is the same as the method for preparing the A type except that No. 6 crushed stone is used instead of No. 5 crushed stone.

In addition to the above, it is also possible to prepare a combination of A type and B type, that is, a combination of No. 5 crushed stone and No. 6 crushed stone. Further, after kneading only the aggregate with a mixer, adding a modified asphalt emulsion, an epoxy resin emulsion and a hardening emulsion together with a filler and a hydraulic inorganic material, and mixing them to obtain a pavement mixture of the present invention. Can also.

The paving mixture according to the present invention can be paved as a surface layer of a permeable pavement on a sidewalk or a roadway in the same paving procedure as a known asphalt mixture. The pavement method and the machinery to be used when the pavement mixture of the present invention is used are the same as those of the known asphalt mixture, but are largely different in that heating is not required.

The pavement mixture of the present invention can be used for paving on sidewalks, general roads, highways, factory yards, airports, and other surface layers, and cured products can be used as paving materials. The pavement mixture of the present invention can be applied at normal temperature.

[0043]

EXAMPLES The present invention will now be described specifically with reference to examples, but the present invention is not limited to these examples.

(Test Method) (1) Marshall Stability Test A pavement mixture was made into a test piece for marshall stability test at room temperature for 50 times on one side at room temperature and cured at room temperature (20 ° C.) for 7 days. A Marshall stability test (60 ° C., 30 minutes) was performed. The Marshall stability (kg) indicates the resistance of the pavement mixture to the composition flow, and the larger the value, the better the adhesiveness of the pavement binder to the aggregate. (2) Wheel tracking test Specimen (30 cm × 30 c) molded with a roller compactor
m × 5 cm). The test conditions were 60 ° C. and the corresponding load (ground pressure) was 6.4 + 0.15 kg / cm ² according to the asphalt pavement requirements. Dynamic stability is 1
run times per mm deformation, ie, deformation resistance (times / m
m). Those with high dynamic stability have excellent fluid resistance and high-temperature stability. (3) Cantaburo test A specimen prepared according to the same procedure as the marshall stability test specimen in accordance with JIS A1121 aggregate wear test was cured at room temperature (20 ° C.) for 7 days, and then the specimen was placed on a Los Angeles tester. , And the amount of loss after rotation for 10 minutes (300 rotations) was measured. (4) Water Permeability A specimen was prepared in the same procedure as the wheel tracking test specimen, cured at room temperature for 7 weeks, and then subjected to a water permeability test according to a method commonly used in the field of the present invention. (5) Chain labeling test This is a test for checking the resistance of a pavement body to abrasion caused by a vehicle wearing a tire chain or a spike tire. The specimen is reciprocated in a horizontal direction, and the wheel with the tire chain is rotated. While descending, it comes into contact with the specimen, and its surface is peeled and worn by a chain. The amount of abrasion was represented by abrasion cross-sectional area (cm ² ). Specimen is 5cm × 15cm ×
30cm, test temperature is -10 ± 1 ℃, test time is 1.5
Time.

(Production Example) Production of modified asphalt emulsion: Epoxidized styrene / butadiene block copolymer 2 was added to 75 parts by weight of heated and melted straight asphalt (penetration 150 to 200).
The modified asphalt modified by mixing 0 parts by weight and 5 parts by weight of petroleum resin was emulsified with a cationic surfactant (stearyltrimethylammonium chloride) to obtain a modified asphalt emulsion (70% by weight of a distillation residue). . Production of Epoxy Resin Emulsion: First, an epoxy resin (bisphenol A type glycidyl ether) (manufactured by Yuka Shell Chemical Co., Ltd .: "Epicoat 828") is emulsified with polyoxyethylene nonylphenol ether to prepare an epoxy resin emulsion (epoxy resin component 65). % By weight). Then
2.8 parts by weight of the epoxy resin emulsion was added to and mixed with 47.2 parts by weight of the modified asphalt emulsion obtained in the above, to obtain an epoxy resin emulsion (1.8% by weight of epoxy resin component). Similarly, an epoxy resin emulsion containing 2.8% by weight of an epoxy resin component was obtained from 45.7 parts by weight of the modified asphalt emulsion and 4.3 parts by weight of the epoxy resin emulsion, and 44.4 parts by weight of the modified asphalt emulsion was obtained. From this and 5.6 parts by weight of the epoxy resin emulsion, an epoxy resin emulsion having an epoxy resin component of 3.6% by weight was obtained. Production of emulsion for curing: First, a self-emulsifying polyamide-based curing agent ("Epicure 3255" manufactured by Yuka Shell Chemical Company)
Was neutralized with hydrochloric acid, and 25 parts by weight of the emulsion was mixed with a cation-based mixing emulsion (“Catiosol CME-
2)) Added to and mixed with 75 parts by weight to obtain an emulsion of a curing agent (curing agent component: 15.4% by weight). Then, 38.3 parts by weight of modified asphalt emulsion obtained in
1.7 parts by weight were added and mixed to obtain a hardening emulsion (hardener component: 1.8% by weight). Similarly, from 32.5 parts by weight of the modified asphalt emulsion and 17.5 parts by weight of the emulsion of the curing agent, a curing emulsion containing 2.8% by weight of a curing agent component was obtained, and 26.6 parts by weight of the modified asphalt emulsion was obtained. 25. an emulsion of the compound and a curing agent
From 4 parts by weight, a hardening emulsion having a hardener component of 3.6% by weight was obtained.

(Example 1) In a pug mill mixer, 85 parts by weight of No. 6 crushed stone, 11.3 parts by weight of coarse sand, 0.5 part by weight of carbon black, 3.2 parts by weight of Lion High Set (manufactured by Osaka Cement Co., Ltd.) Are added in the order described above, and kneading is performed for about 3 seconds. Then, while mixing, the epoxy resin emulsion (1.8% by weight of epoxy resin component) and the emulsion for curing (1.8% by weight of curing agent component) are mixed. 8 pre-mixed
Parts by weight were added and mixed for about 15 seconds. The result of the Marshall stability test is that the density is 2.012 g
/ Cm ³ , the porosity was 17.4%, the Marshall stability was 1,530 kg, and the flow value (1/100 cm) was 20. The result of the wheel tracking test was a density of 1.988.
g / cm ³ , dynamic stability (DS) 20,500 times / m
m. The result of the Cantablo test was 12%. The water permeability was 5.8 × 10 ^-2 cm / sec, and a sufficient water permeation function was obtained as a paving mixture. The result of the chain labeling test showed that the amount of wear was 0.5
cm ² , the abrasion loss of the usual fine-grained ascon (13) l. The value was less than 5 to 2.0 cm ² , and the abrasion resistance was excellent.

(Example 2) Instead of 1.8% by weight of the epoxy resin component, an emulsion of 2.8% by weight was used as an epoxy resin emulsion, and 1.8% by weight of a curing agent component was used as a hardening emulsion.
Was performed in the same manner as in Example 1 except that 2.8% by weight was used instead of. A test was performed in the same manner as in Example 1 using the obtained paving mixture. The result of the Marshall stability test is that the density is 2.006 g.
/ Cm ³ , the porosity was 17.3%, the Marshall stability was 1,500 kg, and the flow value (1/100 cm) was 19. The results of the wheel tracking test indicate that the density is l. 98
5 g / cm ³ , dynamic stability (DS) 20,500 times /
mm. The result of the Cantablo test was a loss of 14%. The result of the permeability test is that the permeability coefficient is 5.9 × 10 ^-2 cm /
sec. As in Example 1, a pavement mixture having a sufficiently water-permeable function was obtained. The result of the chain labeling test showed that the amount of wear was 0.4.
cm ² .

Example 3 3.6% by weight of an epoxy resin emulsion was used instead of 1.8% by weight of an epoxy resin component, and 1.8% by weight of a curing agent component was used as a hardening emulsion.
Was performed in the same manner as in Example 1 except that 3.6% by weight was used instead of A test was performed in the same manner as in Example 1 using the obtained paving mixture. The Marshall stability test result shows that the density is 2.007 g /
cm ³ , porosity of 17.5%, marshall stability of 1,
560 kg, flow value (1/100 cm) was 24. The wheel tracking test result showed that the density was 1.979.
g / cm ³ , dynamic stability (DS) 20,500 times / m
m. The result of the Cantablo test was a loss of 6%. The result of the permeability test is that the permeability coefficient is 6.1 × 10 ^-2 cm /
sec. As in Examples 1 and 2, a water-permeable mixture having a sufficient water-permeable function was obtained. The results of the chain labeling test showed that the amount of wear was 0.3
cm ² .

Comparative Example 1 Crushed stone, coarse sand and stone powder were prepared in the same manner as in Example 1 with the composition shown in Table 2. Using a mixture of the heated aggregate and 5 parts by weight of heated and melted straight asphalt (penetration of 60 to 80),
The test was performed in the same manner as in Example 1. The results were as follows. The Marshall stability test result shows that the density is 1.915 g /
cm ³ , porosity 22%, Marshall stability 220 k
g, flow value (1/100 cm) was 28. As a result of the wheel tracking test, the density was 1.93.
The test specimen was broken about 20 minutes after the start of the test in a state where the dynamic stability (DS) could not be measured at 2 g / cm ³ . The result of the Cantablo test was a loss of 49%. The results of the permeability test indicate that the permeability coefficient is 4 × 10 ^-2 cm / sec.
Met. The results of the chain labeling test were not measurable because the aggregate scattered during the test.

(Comparative Example 2) Crushed stone, coarse sand and stone powder were prepared in the same manner as in Example 1 with the composition shown in Table-2. The same test as in Example 1 was conducted using a mixture obtained by mixing 4.8 parts by weight of a commercially available modified asphalt having a viscosity at 60 ° C. of 200,000 poise or more with the heated aggregate at 60 ° C. The results were as follows. The result of the Marshall stability test is that the density is 1.947 g.
/ Cm ³ , porosity 21%, Marshall stability 610
kg and the flow value (1/100 cm) were 23. As a result of the wheel tracking test, the density was 1.99.
8 g / cm ³ , dynamic stability (DS) 3600 times / m
m. The result of the Cantablo test was a loss of 20%. The result of the permeability test is that the permeability coefficient is 5.9 × 10 ^-2 cm /
sec. As a result of the chain labeling test, the abrasion loss was 10.
It was 0 cm ² . Table 2 and Table 3 show the results of the above Examples and Comparative Examples.
Shown in

[0051]

[Table 2]

[0052]

[Table 3]

Example 4 The mixture for paving obtained in Example 1 was used for actual paving. First, a cationic asphalt emulsion for infiltration as a tack coat (52% by weight of evaporation residue) was applied to the existing dense-grained asphalt concrete pavement surface.
Was sprayed at a rate of 0.31 / m ² , and the paving mixture of Example 1 was mixed with 1 using an asphalt finisher.
It was spread at a rate of 10 kg / m ² . The paving mixture was supplied to the asphalt finisher from a dump truck as in the case of a normal heated asphalt mixture. The compaction was performed only by the vibration of the asphalt finisher, and the roller was not rolled. However, the road surface was finished flat and the surface was not rough. One month has passed since the opening of the traffic, but the pavement using the pavement mixture had an on-site permeability of 6.1 × 10 ^-2 cm / sec.
The drainage function during rainfall is good and there is no cracking, no flow due to traffic load, no asphalt flush, etc., and the friction coefficient (μ) by the DF tester is 60 km / h.
Was 0.48, which was a very good state with slip resistance.

(Results) When Examples 1, 2, and 3 were compared with Comparative Examples 1 and 2, all had a water permeability of 10 ⁻² in units of water permeability.
However, as compared with Comparative Example 1, Examples 1 to 3 had about seven times the marshalling stability as compared with the heated asphalt mixture, and were excellent in flow resistance against traffic loads. Also,
The abrasion resistance was also excellent from the result of the abrasion loss in the chain labeling test. Also, in comparison with Comparative Example 2, Examples 1 to 3 show a value of about 2.5 times the martial stability and about 6 times the dynamic stability (DS), and are stable against traffic loads. In particular, it had excellent flow resistance at high temperatures in summer. Also,
From the results of the abrasion of the chain labeling test, about 20
It was quite excellent in abrasion resistance by 30 to 30 times.

[0055]

【The invention's effect】

(1) The pavement mixture of the present invention can be manufactured and paved at room temperature, and the equipment and steps are simplified. Moreover, it is possible to obtain a product of stable quality without the need for temperature control. (2) The pavement mixture according to the present invention is such that the aggregate surface is coated with a thick film of a high-concentration and high-viscosity modified asphalt emulsion and a thermosetting resin emulsion, and a filler and a hydraulic inorganic material are contained in the coating film. Because the materials are dispersed, no sagging occurs during the operation, and a small amount of hydraulic inorganic material promotes the dispersion of the modified asphalt emulsion, and after the modified asphalt emulsion decomposes and hardens, and After the reaction curing of the curable resin emulsion, it becomes a stronger film of modified asphalt and thermosetting resin, so it is not affected by sunlight or air, has excellent weather resistance and stability against traffic load, especially high temperature in summer It shows an excellent effect on the flow resistance at the time. (3) The pavement mixture of the present invention has a strong bonding force after the modified asphalt emulsion is decomposed and cured and after the reaction curing of the thermosetting resin emulsion, so that the aggregate is not scattered and the abrasion resistance is reduced. Are better. Therefore, it is possible to add a large amount of the modified asphalt emulsion, and the flow resistance in summer is high and the durability is good. Also, the wear resistance in winter is good. (4) The pavement mixture of the present invention easily secures the porosity, is excellent in its retention, and has an excellent water permeability.

Claims (3)

[Claims] 1 to 5 parts by weight of a filler, 1 to 15 parts by weight of a hydraulic inorganic material, and 2 to 12 parts by weight of a modified asphalt emulsion containing an epoxidized diene-based block copolymer based on 100 parts by weight of an aggregate. And thermosetting resin emulsion 0.
A pavement mixture comprising 2 to 3 parts by weight. 2. The method according to claim 1, wherein the filler and the hydraulic inorganic material are dispersed in a mixture of the modified asphalt emulsion and the thermosetting resin emulsion, and the mixture covers the surface of the aggregate. The pavement mixture according to claim 1. 3. A cured product of the paving mixture according to claim 1 or 2.