JP3236943B2 - Permeable room temperature mixture and production method thereof - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permeable room temperature mixture which can be applied as a pavement material for surface layers such as sidewalks, general roads, highways, factory yards, airports and the like at room temperature, and a method for producing the mixture.

[0002]

2. Description of the Related Art In recent years, the so-called conventional soil surface has been drastically reduced due to pavement and structures in the urban area and its surroundings following the wave of urbanization, and penetration of rainwater and the like has been hindered.
Obstacles such as death of trees, land subsidence, and flooding of rivers due to torrential rain are frequently occurring. The permeable pavement has been implemented in response to such a problem, and has a function of immediately preventing seepage and drainage of rainwater or the like from the pavement road surface.

[0003] The mixture of the permeable pavement has a porosity of at least 1 in order to allow rainwater or the like to penetrate into the lower part for the purpose.
5-25% is needed. For this reason, the mixture of the aggregates is significantly different from that of the ordinary pavement mixture. For example, a mixture of a large amount of coarse aggregates such as open-grained asphalt concrete is included, and the mixture of the aggregates is poor. Therefore, the permeable pavement mixture has heretofore been mainly used only for sidewalks because of its poor deformation resistance against traffic loads.

[0004] However, recently, this permeable pavement has been tried on roadways, and has attracted attention.

[0005] In addition, due to the recent increase in the traffic volume of large vehicles, the pavement structure, weather conditions, and the like, asphalt pavement has been conspicuously generating rutting, unevenness, reduced flatness, and a fluidity phenomenon. In addition, the pavement surface is significantly worn due to spikes in winter and abrasion caused by tire chains. For this reason, puddles are formed on the pavement surface during rainfall, and there are concerns about driving errors caused by hydroplaning phenomena, slippage, splashing and visual field obstruction due to smoking, etc., which is one of the major causes of accidents and is a serious accident in traffic safety. It is a problem. Under such circumstances, countermeasures are urgently required, and practical use of permeable pavement is also urgently required on roadways. At present, permeable pavement is being experimentally implemented in various places.

[0006] When permeable pavement is carried out on a road, this is called drainage pavement. In drainage pavement, since the bearing capacity is reduced when rainwater penetrates into the roadbed and subgrade, the lower layer of drainage pavement is generally a dense pavement, and is a horizontal structure where drainage rainwater etc. is drained to the shoulder of the road. ing. In addition, drainage pavement has large voids,
Since the gap absorbs the traveling noise of the vehicle, it has an effect of reducing noise, and is sometimes called low-noise pavement, and is also attracting attention as a street pavement of an urban road.

[0007] The drainage pavement mixture, as described above,
Compared with a normal pavement mixture, the mixture has larger voids, that is, because of a small amount of fine particles in the mixture of the aggregate, the strength due to the engaging effect of the aggregate cannot be expected. Therefore, in order to increase the stability of the drainable pavement mixture, a binder having a strong grasping force for strongly bonding between aggregates is required. In addition, since the drainable pavement mixture is used for general roadways, highways, and the like, it is required to have high dynamic stability. For that, the softening point is high,
It is necessary to use a binder having a high viscosity at 60 ° C.

For this reason, the binder for the drainable pavement mixture is a modified asphalt modified with a polymer, which is described in the “Asphalt Pavement Guidelines” published by the Japan Road Association. An ultra-high viscosity modified asphalt having a much higher softening point than asphalt type II and a high viscosity at 60 ° C. (about 200,000 poise or more) is used. Furthermore, since the drainage pavement mixture is apt to deteriorate due to direct sunlight or air due to its large voids, it is necessary to increase the thickness of the binder with respect to the aggregate. Therefore, it is necessary to increase the viscosity of the binder at a high temperature to reduce the "sag" at the time of work, and it is necessary to use not only the above-mentioned ultra-high viscosity improving asphalt, but also the modified asphalt and In some cases, a synthetic fiber, a fibrous filler, or the like is used in combination.

However, since the production and paving of these drainage pavement mixtures are all carried out by heating, the ultra-high-viscosity modified asphalt and the modified asphalt containing vegetable fibers used have a low viscosity due to temperature change. Because of the large fluctuations, it was necessary to pay close attention to temperature control, which was technically very difficult. The use of ultrahigh-viscosity modified asphalt improves the flow resistance at high temperatures, but it is still not satisfactory, and further improvement is required.

[0010]

SUMMARY OF THE INVENTION The present invention meets such a demand, and can be constructed at room temperature, does not require temperature control, and has a high-concentration and high-viscosity modified asphalt having a high aggregate surface. It is coated with a thick film of emulsion and thermosetting resin emulsion, and by dispersing filler and hydraulic inorganic material in the coating film, it does not cause “drip” during work, it is made of hydraulic inorganic material After the decomposition and curing of the modified asphalt emulsion by the hydration reaction and the reaction curing of the thermosetting resin emulsion, a strong thick film of the modified asphalt and a strong film of the thermosetting resin are formed on the aggregate surface. The present invention provides a water-permeable room-temperature mixture having excellent durability, flow resistance, and abrasion resistance, and a method for producing the same.

That is, the present invention provides a modified surface of an aggregate in which asphalt in an asphalt emulsion or one or more selected from rubber and a thermoplastic polymer is mixed with the asphalt emulsion. Coated with a porous asphalt emulsion and a thermosetting resin emulsion, wherein the filler and the hydraulic inorganic material are dispersed in the coating film;
1 to 5 parts by weight of a filler, 1 to 15 parts by weight of a hydraulic inorganic material, and asphalt in an asphalt emulsion or asphalt emulsion mixed with one or more selected from rubber and a thermoplastic polymer to modify 2 to 12 parts by weight of the modified asphalt emulsion and 0. thermosetting resin emulsion.
It is another object of the present invention to provide a method for producing a water-permeable room-temperature mixture, characterized by adding and mixing 2 to 3 parts by weight.

Hereinafter, the present invention will be described in detail.

The aggregate used in the present invention is no different from the aggregate normally used for asphalt pavement. Further, in the present invention, according to the description of the “Asphalt Pavement Outline”, the aggregate that stops on the 2.36 mm sieve is referred to as coarse aggregate, and the aggregate that passes through the 2.36 mm sieve, and passes through the 2.36 mm sieve.
The aggregate that stops on the 075 mm sieve is fine aggregate and 0.07
What passes through a 5 mm sieve is called a filler.

Examples of general coarse and fine aggregates include crushed stone, crusher run, screenings, crushed dust, sand and the like. In addition, light-colored aggregates and hard aggregates can also be used. Light-colored aggregates include, for example, loxobite, Sinopearl, aluminum particles, ceramic particles, plastic particles, and colored aggregates. Examples of the hard aggregate include emery and silica sand. Examples of the filler include a filler for screening, stone powder, incinerator ash, clay, talc, fly ash, and carbon black. In addition, rubber powder, cork powder, wood powder,
Short fibers such as resin powder, inorganic fibers, pulp, synthetic fibers, and carbon fibers can be used in combination as a part of the filler.
As a part of the aggregate, an aggregate precoated with asphalt can also be used.

The blending amount of the filler with respect to 100 parts by weight of the aggregate can 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. If the amount 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, while if it exceeds 5 parts by weight, the modified asphalt emulsion for the aggregate is insufficient. On the contrary, the adhesiveness and coatability 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 early strength Portland cement, moderate heat Portland cement, white Portland cement, blast furnace cement, silica cement, fly ash cement, alumina cement, expanded 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 about 1 to 15 parts by weight, more preferably about 3 to 9 parts by weight, based on 100 parts by weight of the aggregate. The amount of hydraulic inorganic material is
When the amount is less than 1 part by weight, the stability of the cured product in the permeable room temperature mixture is reduced. On the other hand, when the amount is more than 15 parts by weight, the rigidity of the cured product in the permeable room temperature mixture becomes too strong, causing deflection. Loss of properties, causing cracking. In addition, together with the hydraulic inorganic material, if necessary, a known cement admixture, for example, a shrinkage compensator, a hardening accelerator, a hardening retarder, a dispersant, an air-propellant, a thickener, a water reducing agent, a filler Can be used in combination.

[0018] Asphalt emulsions can be cationic, anionic or non-ionic depending on the type of surfactant used as an emulsifier.
The asphalt emulsion used in the present invention is classified into a nonionic type and the like, and any type of asphalt emulsion may be used as long as it is a modified asphalt emulsion.

The modified asphalt emulsions of the cationic, anionic and nonionic types used in the present invention include natural asphalt, straight asphalt, blown asphalt, semi-blown asphalt, solvent deasphalted asphalt (for example, propane-based bitumen asphalt) and the like. Emulsifier, dispersant, modified asphalt modified by a premix type method in which one or more kinds of petroleum asphalts are mixed with one or more kinds selected from rubber and thermoplastic polymer An oil-in-water type modified asphalt emulsion emulsified and dispersed in water by using a stabilizer or the like, wherein the modified asphalt emulsion is well mixed with an aggregate, a filler and a hydraulic inorganic material. Alternatively, a modified asphalt emulsion modified by a post-mix type method in which one or more selected from rubber and a thermoplastic polymer are directly mixed with an oil-in-water asphalt emulsion is used.

The rubber and the thermoplastic polymer used in the modified asphalt emulsion include, for example, natural rubber, gutta-virta, cyclized rubber, styrene-butadiene rubber, styrene-esoprene rubber, isoprene rubber, polyisobutylene rubber, butadiene rubber, and chloroprene. Rubber, butyl rubber, halogenated butyl rubber, chlorinated polyethylene,
Rubbers such as chlorosulfonated polyethylene, ethylene propylene rubber, EPT rubber, olefin rubber, styrene / butadiene block polymer rubber, styrene / isoprene block polymer rubber, and ethylene / vinyl acetate copolymer, ethylene / acrylate copolymer, It is a thermoplastic polymer such as polyethylene, vinyl acetate / acrylate copolymer. One or more of these are used. In addition, various shapes and forms of the rubber and the thermoplastic polymer are used. For example,
Examples include powdery, granular, latex, emulsion, aqueous, and the like. These latex, emulsion, and water-based emulsions are used in modified asphalt emulsions by a post-mix type method. Of course, these are also used in modified asphalt emulsions by the premix type method.

Along with the rubber and the thermoplastic polymer, a thermoplastic solid resin or a solid rubber, a liquid resin, a softener, as a tackifier to improve adhesion and compatibility.
Addition of a plasticizer or the like is also performed. For example, rosin and its derivatives, terpene resins and petroleum resins and its derivatives, alkyd resins, alkylphenol resins, terpene phenol resins, coumarone indene resins, synthetic terpene resins, alkylene resins, polyisobutylene, polybutene, polybutene, isobutylene and butadiene Polymers, mineral oils, process oils, pine oils, anthracene oils, pine oils, plasticizers, animal and vegetable oils, polymerized oils and the like. Further, an antioxidant, an antioxidant, sulfur and the like can be added. Further, for the purpose of adjusting the viscosity of the modified asphalt emulsion, a water-soluble polymer protective colloid such as MC, CMC, HEC, PVA, or gelatin can be added.

The mixing ratio of the asphalt to the rubber and the thermoplastic polymer in the modified asphalt emulsion is about 10 to 100 parts by weight, more preferably about 20 to 50 parts by weight, per 100 parts by weight of the asphalt. is there. When the amount of the rubber and the thermoplastic polymer is less than 10 parts by weight, the modified asphalt emulsion decomposes and cures, but after the modified asphalt has poor adhesion to the aggregate and poor grasping power, it has a weight of 100 parts by weight. If it exceeds the part, the cohesive force is too strong, and it is easy to peel off from the aggregate, and it is not economical. As the asphalt in the modified asphalt emulsion, it is preferable to use one having a penetration (25 ° C.) of about 40 to 300 in consideration of the properties after decomposition and hardening. The concentration of evaporation residue (solid matter) of the modified asphalt emulsion is usually about 50 to 70% by weight.
In the present invention, those having as high a concentration as possible are preferred.

The amount of the modified asphalt emulsion used was as follows:
The amount is usually about 2 to 12 parts by weight, more preferably about 5 to 10 parts by weight, based on 00 parts by weight. If the amount of the modified asphalt emulsion is less than 2 parts by weight, the coating thickness of the modified asphalt emulsion on the aggregate is insufficient, and the excellent function as a water-permeable room temperature mixture is not exhibited, and the durability is poor. If it is inferior, but exceeds 12 parts by weight, the stability of the water-permeable room-temperature mixture is rather reduced.

The thermosetting resin emulsion used in the present invention is mainly an emulsion of an epoxy resin and its curing agent.

The epoxy resin is a liquid or solid epoxy resin containing a compound having one or more epoxy groups in one molecule as a main component. Epoxy resins are most commonly condensates of bisphenol A and epichlorohydrin (based on the glycidyl ether of bisphenol A) as liquid or solid resins such as Epicoat 81.
5, 828, 834, 1001, 1004 (all are shell chemistry, trade names) and the like. In addition, glycidyl ether of bisphenol F, glycidyl ether of dimer acid, polyalkylene glycol glycidyl ether, glycidyl ether of bisphenol A alkylene oxide adduct, aliphatic glycidyl ether, urethane modified bisphenol glycidyl ether, aliphatic aromatic cocondensed glycidyl ether, vinyl Examples include cyclohexane dioxide, dicyclopentanedene oxide, and hydrogenated bisphenol glycidyl ether.

These epoxy resins are used alone or in combination of two or more. Further, a substance that promotes a curing reaction between the epoxy resin and the curing agent, for example, phenol, cresol, alkylphenol, salicylic acid, triphenyl phosphate, furfur alcohol, or the like can be used.

In the present invention, the epoxy resin as described above is dispersed in water and used in the form of an emulsion. The type of the emulsified epoxy resin may be any of an anionic type, a nonionic type, and a cationic type, but a nonionic type is generally desirable. The moisture in the emulsified epoxy resin is 5
If possible, the content is preferably 40% by weight or less.

The curing agent is mainly composed of a compound having a functional group which reacts with an epoxy group in one molecule. Specifically, a generally known material is used. For example, aliphatic polyamines, aromatic polyamines, cycloaliphatic polyamines, aliphatic hydroxy polyamines, these modified polyamines, these amine adducts, polyamide, Keteimin, tertiary amines, imidazoles, BF ₃ amine complexes, acid anhydride, Examples include dimer acid, trimer acid, and liquid polysulfide rubber.

The above-mentioned curing agents are 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 used in a state of being dispersed in an aqueous solution or water. The curing agent which is insoluble or has no dispersibility in water is used after being dispersed in water with an appropriate surfactant, acid or the like. The water content in the curing agent prepared as described above is preferably as low as possible.

The quantitative ratio between the epoxy resin and the curing agent is allowed in a relatively wide range centering on the equivalent value which is the basis of the bonding reaction between the two, but it is desirable to use the equivalent value or a ratio close to the equivalent value. .

The amount of the thermosetting resin emulsion as described above is usually from 0.2 to 3 per 100 parts by weight of the aggregate.
The amount is about part by weight, more preferably about 0.3 to 2.0 parts by weight. When the amount of the thermosetting resin emulsion used is less than 0.2 parts by weight, it is difficult to form a strong coating on the aggregate and the durability as a water-permeable room-temperature mixture is inferior, whereas 3 parts by weight is used. If it exceeds, the impact resistance of the permeable room temperature mixture is rather lowered.

The method of using the modified asphalt emulsion and the method of using the thermosetting resin emulsion in the present invention are as follows.
An example is as follows.

A required amount of the modified asphalt emulsion was mixed in advance with a required amount of the epoxy resin emulsion, and this was used as an agent A.
Further, a required amount of the modified asphalt emulsion previously added and mixed with a required amount of the hardening agent processed as described above to obtain a B agent, and a mixture obtained by previously mixing the A agent and the B agent is added to the aggregate. Any method, such as a method in which the agent A or the agent B is charged into the aggregate first, and a method in which the agent B or the agent A is charged and then mixed, can be used.

The permeable cold mixture according to the present invention usually comprises
It is prepared according to the following procedure.

Table 1 shows an example of typical combinations of materials for hardening the permeable room-temperature mixture according to the present invention.

[0036]

[Table 1]

1) Preparation of Type A Water Permeable Room Temperature Mixture A type has a water permeable room temperature mixture having a porosity of 20 to 30%.
Suitable for the preparation of a range of degrees. The preparation of the A-type permeable room-temperature mixture is performed using a mixer such as a pugmill mixer. First, a required amount of No. 5 crushed stone is put into a mixer, and then a required amount of coarse sand, a filler, and a hydraulic inorganic material are added in this order, and kneading is performed for about 3 to 5 seconds. Thereafter, a required amount of the previously mixed agent A and agent B is added to this mixture, and the mixture is mixed in a mixer for about 15 to 25 seconds to obtain a water-permeable room-temperature mixture of the present invention. it can. Needless to say, the required amount of the agent A and the agent B can be separately added irrespective of the order of addition and mixed in a mixer to obtain the permeable room-temperature mixture of the present invention. That is, the surface of the aggregate is coated with a thick coating of a high-concentration and high-viscosity modified asphalt emulsion and a thermosetting resin emulsion, and the filler and the hydraulic inorganic material are dispersed in the coating film. No sagging occurs, and the modified asphalt emulsion is decomposed by the hydration reaction with the hydraulic inorganic material,
After curing and after the thermosetting resin emulsion is reactively hardened, it is possible to obtain a water-permeable room-temperature mixture in which a strong thick film of modified asphalt and a strong film of thermosetting resin are formed on the aggregate surface. .

The water content of the water-permeable room-temperature mixture is usually sufficient only from the modified asphalt emulsion and the thermosetting resin emulsion. When there is not enough water for mixing, when an admixture, a filler and the like are used together, and when the consistency is adjusted to ensure workability, water may be appropriately supplied.

2) Preparation of Type B Permeable Room-Temperature Mixture Type B is prepared as a permeable room temperature mixture having a porosity in the range of about 15 to 25%. The method for preparing the B-type permeable room-temperature mixture is the same as the preparation method of 1) except that No. 5 crushed stone is used instead of No. 5 crushed stone, and therefore a description thereof will be omitted.

In addition to the above, the water-permeable room-temperature mixture of the present invention can of course be obtained by the method of preparing a combination of the A type and the B type, that is, the combination of the No. 5 crushed stone and the No. 6 crushed stone. .

Further, after kneading only the aggregate with a mixer, the agent A and the agent B are added together with the filler and the hydraulic inorganic material and mixed, whereby the water-permeable room temperature mixture of the present invention can be obtained.

The pot life of the permeable room temperature mixture of the present invention is as follows:
Although it can be adjusted according to the mixing ratio of each material, it is usually preferably about 2 hours in consideration of the time required for transportation and pavement and the demand for early traffic release after pavement. Of course, the pot life can be changed as appropriate depending on the conditions.

The permeable room-temperature mixture according to the present invention is laid as a surface layer of a drainage pavement on a sidewalk or a roadway in the same manner as a known asphalt mixture. When the permeable room-temperature mixture of the present invention is used, the pavement method and the machinery to be used are the same as those of the known asphalt mixture except that heating is not required.

[0044]

EXAMPLES Examples will be shown below to further illustrate the features of the present invention.

[0045]

[Preparation of main materials used]

1) Heat melted straight asphalt (penetration 1
50 to 200) 75 parts by weight of a modified asphalt prepared by mixing 20 parts by weight of a styrene / butajan block polymer rubber and 5 parts by weight of a petroleum resin and emulsifying with a cationic surfactant to form a modified asphalt emulsion ( (Evaporation residue 70% by weight).

2) Epoxy resin shrimp coat 828 (trade name of Yuka Shell Epoxy Co., Ltd.) was emulsified with a nonionic surfactant to prepare an epoxy resin emulsion (epoxy component 65).
% By weight).

3) Polyamide-based curing agent Self-emulsifying type EpiCure 3255 (trade name of Yuka Shell Epoxy Co., Ltd.) neutralized with hydrochloric acid, and 25 parts by weight of a cationic mixing emulsion (Nichigei Chemical Industry Co., Ltd.) To 75 parts by weight) to obtain an emulsion of a curing agent (curing agent component: 15.4% by weight).

[0048]

Example 1 2.8 parts by weight of an epoxy resin emulsion was added to 47.2 parts by weight of the modified asphalt emulsion and mixed to obtain agent A (1.8% by weight of an epoxy resin component).

On the other hand, 31.7 parts by weight of the modified asphalt emulsion and 11.7 parts by weight of a hardener emulsion were added and mixed to obtain agent B (hardener component 1.8% by weight).

In a pug mill mixer, 85 parts by weight of No. 6 crushed stone,
Coarse sand 11.3 parts by weight, carbon black 0.5 parts by weight, Lion High Set (manufactured by Osaka Cement Co., Ltd.)
2 parts by weight were charged in the order described above, and kneading was performed for about 3 seconds. Then, while mixing, 8 parts by weight of a premix of the agent A and the agent B were added and mixed for about 15 seconds.

Using the water-permeable room-temperature mixture thus obtained, a specimen for a marshalling stability test was prepared at room temperature, 50 times on one side, on both sides. After training at room temperature (20 ° C.) for 7 days, the marshalling stability was measured. A degree test (60 ° C., 30 minutes) was performed.

As a result, the density was 2,006 g / cm ³ , the porosity was 17.6%, the marshall stability was 1580 kg,
The flow value (1/100 cm) was 22.

Further, using the resulting water-permeable room-temperature mixture, the mixture was rolled with a roller converter to obtain 30 cm × 30 cm ×
After preparing a 5 cm test specimen and cultivating it at room temperature (20 ° C.) for 7 days, the test concentration was 60 ° C. and the load capacity (according to the wheel tracking test method described in “Pavement Test Method Handbook” issued by the Japan Road Association. Ground pressure) 6.4 + 0.15Kg
/ Cm ² , the density was 1.985 g / cm
³ . The dynamic stability (DS) was 21,000 times / mm.

Further, a specimen prepared by the same procedure as the specimen for the Marshall stability test was cured at room temperature (20 ° C.) for 7 days, and the specimen was put into a Los Angeles testing machine.
The loss after rotation (300 rotations) for 10 minutes (also referred to as Cantablo test method) was measured and found to be 12%.

Further, a test piece prepared by the same procedure as the test piece for wheel tracking test was cured at room temperature (20 ° C.) for 7 days, and then subjected to a water permeability test. The water permeability coefficient was 5.9 × 10 ^−2. In cm / aec, a sufficient water-permeability function was obtained as a water-permeable room-temperature mixture.

Similarly, a test piece prepared according to the same procedure as the test piece for wheel tracking test was cured at room temperature for 7 days and then subjected to a chain labeling test (−10 ° C., 1.5 hours). 1.5 cm ² , 1.5 to 2.0 c of the amount of abrasion of ordinary dense grain ascon (13)
m is ² smaller value, excellent water permeability cold mixture in abrasion student was obtained.

[0057]

Example 2 4.3 parts by weight of an epoxy resin emulsion were added to 45.7 parts by weight of the modified asphalt emulsion and mixed to obtain agent A (epoxy resin component: 2.8% by weight).

On the other hand, 37.5 parts by weight of the modified asphalt emulsion was mixed with 17.5 parts by weight of an emulsion of a curing agent,
(Curing agent component 2.8% by weight).

The preparation of the water-permeable room-temperature mixture was carried out in the same manner as in Example 1. That is, the amounts of the aggregate, the amounts of the A agent and the B agent, and the mixing method are the same as those in Example-1.

A test was carried out in the same manner as in Example 1 using the thus obtained permeable room-temperature mixture. The results were as follows.

The results of the Marshall stability test indicate that the density is 2.
002 g / cm ³ , porosity of 17.7%, Marshall stability of 1520 Kg, flow value (1/100 cm) of 2
It was one.

As a result of the wheel tracking test, the density was 1.983 g / cm ³ and the dynamic stability (DS) was 2100.
It was 0 times / mm.

The results of the cantalob test show that the loss amount is 1
4%, and the permeability test result shows that the permeability coefficient is 6.1 × 10
^-2 cm / sec. As in Example 1, a water-permeable room temperature mixture having a sufficient water-permeable function was obtained.

Further, as a result of the Cheng labeling test, the amount of abrasion was 0.4 cm ² .

[0065]

Example 3 To 44.4 parts by weight of a modified asphalt emulsion, 5.6 parts by weight of an emulsion of an epoxy resin were added and mixed to prepare agent A (3.6% by weight of an epoxy resin component).

On the other hand, 25.4 parts by weight of the modified asphalt emulsion was mixed with 25.4 parts by weight of an emulsion of a hardening agent to obtain a B agent (hardening agent component: 3.6% by weight).

Preparation of the water-permeable room temperature mixture was carried out in the same manner as in Example 1. That is, the amounts of the aggregate, the amounts of the A agent and the B agent, and the mixing method are the same as those in Example-1.

A test was carried out in the same manner as in Example 1 using the water-permeable room-temperature mixture thus obtained. The results were as follows.

The Marshall stability test results showed that the density was 2.
004 g / cm ³ , porosity of 17.8%, Marshall stability of 1585 Kg, flow value (1/100 cm) of 2
It was 8. As a result of the wheel tracking test, the density was 1.977 g / cm ³ and the dynamic stability (DS) was 2100.
It was 0 times / mm.

The results of the cantaburo test show that the loss amount is 10%.
%, And the permeability test result shows that the permeability coefficient is 6.2 × 10
^-2 cm / sec. Example-1 and Example-
Similarly to 2, a water-permeable mixture having a sufficient water-permeable function was obtained.

Further, as a result of the chain labeling test, the amount of abrasion was 0.3 cm ² .

[0072]

[Comparative Example] As Comparative Example-1, heated aggregate having the same aggregate composition as that of Example-1 (however, carbon black and Lion High Set were replaced with stone powder) was heated and melted with straight asphalt (with needles). Using a mixture containing 5 parts by weight (degree: 60 to 80), a test was conducted in the same manner as in Example 1, and the results were as follows.

The Marshall stability test results show that the density is 1.
915 g / cm ³ , porosity was 22%, Marshall stability was 220 Kg, and flow value (1/100 cm) was 28.

As a result of the wheel tracking test, the test piece was broken about 20 minutes after the start of the test in a state where the density was 1.932 g / cm ³ and the dynamic stability (DS) could not be measured.

Further, the results of the cantaburo test show that the loss amount is 49%.
%, And the permeability test result indicates that the permeability coefficient is 5.4 × 10
^-2 cm / sec.

Furthermore, the results of the chain labeling test were not measurable because the aggregate scattered during the test.

As Comparative Example-2, a heated aggregate having the same aggregate composition as in Example-1 (however, carbon black and Lion High Set were replaced with stone powder) was heated and melted at 60 ° C to have a viscosity of 20. Using a mixture of 4.8 parts by weight of a commercially available modified asphalt of 10,000 poise or more,
The same test as in Example 1 was performed. The results were as follows.

The results of the Marshall stability test were as follows.
947 g / cm ³ , porosity was 21%, Marshall stability was 610 kg, and flow value (1/100 cm) was 23.

The results of the wheel tracking test were that the density was 1.998 g / cm ³ and the dynamic stability (DS) was 350
It was 0 times / mm.

The results of the cantaburo test show that the loss amount is 2
0%, and the permeability test result shows that the permeability coefficient is 5.9 × 10
^-2 cm / sec. Furthermore, as a result of the chain labeling test, the amount of abrasion was 10.0 cm ² .

Tables 2 and 3 summarize the results of the above Examples and Comparative Examples.

[0082]

[Table 2]

[0083]

[Table 3]

Example-1, Example-2 and Example-3
If, when comparing the Comparative Example 1 and Comparative Example -2 permeability both have a water permeability function in 10 ^-2 order, but in comparison with Comparative Example 1, the present invention The permeable room-temperature mixture has a marshal stability of about 7 times that of the heated asphalt mixture and a dynamic stability (DS) that is incomparable, indicating that it has excellent flow resistance to traffic loads. In addition, the amount of abrasion in the results of the chain labeling test was not comparable, indicating that the abrasion resistance was excellent. Further, in comparison with Comparative Example-2, the water-permeable room-temperature mixture of the present invention has a Marshall stability about 2.5 times that of the ultra-high-viscosity modified asphalt heated mixture and a dynamic stability (DS). Is about 6 times, which means that it is stable against traffic loads and is particularly excellent in flow resistance at high temperatures in summer. Further, it can be seen that the abrasion amount in the chain labeling test is about 20 to 30 times, which is quite excellent in abrasion resistance.

[0085]

Example 4 The permeable room temperature mixture obtained in Example 1 was
Used for actual pavement.

First, a cationic asphalt emulsion for penetration (52% by weight of evaporation residue) was used as a tack coat on an existing dense-grained asphalt concrete pavement surface in an amount of 0.3 l / l.
After spraying at a rate of m ^2, using asphalt pavers, water permeability room temperature mixture of Example -1 110K
g / m ² . The supply of the permeable room-temperature mixture to the asphalt finisher was performed from a dump truck as in the case of the usual heated asphalt mixture. The compaction was performed only by the pipe of the asphalt finisher, and the roller was not rolled. However, the road surface was finished flat and there was no rough surface.

One month has passed since the opening of the traffic, but the pavement using the permeable room temperature mixture had an on-site permeability coefficient of 6.1 × 10
^-2 cm / sec, good drainage function during rainfall, no cracks, no flow due to traffic load, no asphalt flushing, etc., and a friction coefficient (μ) with a DF tester of 0. It was in a very good state with a slip resistance of 48.

[0088]

As described above, according to the present invention, the following effects can be obtained.

1) Since the water-permeable room-temperature mixture of the present invention can be produced at room temperature, equipment and steps are simplified, and there is no need for temperature control, so that a product of stable quality can be obtained. Further, the obtained water-permeable room-temperature mixture can be paved at room temperature without heating as in the case of manufacturing, and the need for difficult temperature management as in the related art is eliminated.

2) The water-permeable room-temperature mixture of the present invention has an aggregate surface coated with a thick coating of a high-concentration and high-viscosity modified asphalt emulsion and a thermosetting resin emulsion, and a filler and water are contained in the coating. Since the hard inorganic material is dispersed, no sagging occurs during work, and a small amount of hydraulic inorganic material accelerates the decomposition of the modified asphalt emulsion, and the modified asphalt emulsion decomposes. After curing and after thermosetting of the thermosetting resin emulsion, it becomes a stronger film of modified asphalt and thermosetting resin, so it is not affected by sunlight or air, and has excellent weather resistance,
In addition, it has an excellent effect on stability against traffic load, particularly flow resistance at high temperature in summer.

3) The water-permeable room-temperature mixture of the present invention has a strong bonding force after the modified asphalt emulsion is decomposed and cured and after the thermosetting resin emulsion has been cured by reaction. Excellent wear resistance. 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 water-permeable room-temperature mixture of the present invention can easily secure the porosity, and has an excellent water-permeability function, which is its original purpose, over its retention.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-126804 (JP, A) JP-A-58-58305 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E01C 7/18-7/30

Claims (2)

(57) [Claims] A modified asphalt emulsion in which the surface of an aggregate is modified by mixing asphalt in an asphalt emulsion or one or more selected from rubber and a thermoplastic polymer into an asphalt emulsion. A water-permeable room-temperature mixture characterized by being coated with a thermosetting resin emulsion, wherein a filler and a hydraulic inorganic material are dispersed in the coating film. 2. Filler 1 to 100 parts by weight of aggregate
5 parts by weight, 1 to 15 parts by weight of hydraulic inorganic material, and asphalt in asphalt emulsion or one or two selected from rubber and thermoplastic high molecular weight polymer in asphalt emulsion
Modified asphalt emulsion 2-1 which is modified by mixing more than one species
A method for producing a water-permeable room-temperature mixture, wherein 2 parts by weight and 0.2 to 3 parts by weight of a thermosetting resin emulsion are added and mixed.