JPH0227004A - Grass-proofing injection joint material or grass-proofing molding joint material and grass-proofing joint construction method for pavement - Google Patents

Abstract

PURPOSE:To persistently prevent the vegetation in the joint part by mixing a grass-proofing agent and a repellent into the mixture of asphalt and polymeric materials, and filling these into the joint between a pavement and the side-ditch. CONSTITUTION:Polymeric materials such as natural rubber, synthetic rubber, and polymer are mixed into asphalt such as straight asphalt, and blown asphalt. Next, a grass proofing agent insoluble in water such as phenoxy, benzoic, urea, dinitroaniline, pyrimidine, fatty acid, and inorganic series, and a repellent such as phenoxy fatty acid ester are added to the above. Then, this is filled into the joint 3 between the surface layer 1 of an asphalt pavement and a U-shaped concrete ditch 2.

Description

[Detailed description of the invention] <Field of industrial application> The purpose of this invention is to prevent weeds between roads and concrete structures surrounding them, and is particularly applicable to farm roads, sidewalks, and embankments where weeds are likely to grow. etc., relates to a weed-prevention injection joint material or a weed-prevention molded joint material that prevents the growth of weeds, and a weed-prevention joint construction method for paved roads.

<Prior Art and its Problems> 13) Although farm roads and sidewalks have relatively little traffic of vehicles and people, they are not completely free of traffic, so they are simply paved with asphalt concrete. Such roads have low traffic volume and the surrounding natural environment is prone to weed growth. In particular, on farm roads and sidewalks where there are concrete structures such as U-shaped ditches and L-shaped gutters on the road shoulders, H
Grass seeds germinate and grow, and as a result, weeds invade the inside of the pavement, causing problems such as destruction of the pavement, poor visibility, lack of aesthetic appeal, and the cost of mowing.

Conventionally, in order to prevent the growth of weeds on such roads, the method of spraying herbicides etc. under the pavement surface in advance has been used, but it is not long-lasting and no real weed control effect can be expected. Ta. Therefore, the present applicant previously invented a weed-proof paved road whose surface layer is made of asphalt concrete mixed with herbicides, etc., and filed a patent application (see Japanese Patent Application No. 63-94659). According to this invention, the weed prevention effect was sufficient in the paved portion, but the weed prevention effect of this weed prevention pavement road was not sufficient between the pavement and the concrete structure, and the weed prevention treatment in this area was not sufficient. A new problem arose. Furthermore, in conventional paving work, if there was a concrete structure on the shoulder of the road, an asphalt emulsion was applied to the concrete structure, and asphalt pavement was then applied on top of the asphalt emulsion.

Even if an asphalt emulsion is applied, the asphalt and concrete structure will not be completely bonded, so weeds will begin to grow between the pavement and the concrete structure in a short period of time, resulting in the pavement being destroyed by weeds. There was a problem. There was also a so-called joint material between the paving section and the concrete structure that would not keep it cold, but this "IJl!!
The material was mainly used for the purpose of joining the paving section with the concrete 1/structure, and no special weed control measures were taken for these materials, so it was decided to use the 1] ground material like this. Even if the space between the pavement and the concrete structure is sealed, eventually dirt and sand will accumulate on top of the joint material, and weed seeds will fly there, causing the weeds to grow and tear the pavement from the joint. There was a problem that it was destroyed.

In other words, in order to prevent the growth of weeds between the ♂11 cover and the concrete structure, simply sealing the area with this ♂1'' area will prevent the growth of weeds. It was found that it was necessary to carry out weed control treatment using repellents and repellents.

Therefore, the weed control injection material or weed control molding material according to the present invention is a mixture of asphalt, a polymer, and a herbicide or (and) repellent. It is used to prevent the growth of weeds and is used between pavement and concrete structures. In addition, in order to solve the above-mentioned problems, the method for constructing weed-proof joints on paved roads according to the present invention includes constructing joints on paved roads using a joint material mixed with herbicides and/or repellents. This is designed to prevent weeds from growing between the pavement and the concrete structure.

Here, the asphalt and polymer used in the weed prevention injection joint material or weed prevention molded joint material and method for constructing weed prevention joints for paved roads according to the present invention will be explained. As the asphalt, straight asphalt, blown asphalt and mixtures thereof can be used. These can be appropriately selected depending on the place of use, the type and concentration of the drug used.

In addition, by increasing the amount of blown asphalt used, softening of the injection joint can be prevented. In addition, as the polymer, natural rubber, styrene-butadiene rubber, synthetic rubber including imprene rubber and butyl rubber, thermoplastic elastomer including styrene-butadiene block copolymer, and ethylene-hinyl acetate copolymer are used alone or in mixtures thereof. can. The amount of elliptical addition of the polymer depends on the type of asphalt and the degree of penetration, as well as the type of polymer added and the copolymer ratio.

Varies depending on molecular weight, but 5% to 30% by weight
Just add it.

For convenience in manufacturing and use, for example, mineral powder such as stone powder, bentonite, and clay may be added as an extender to improve resistance to deformation and ease of cutting. good. The amount added is desirably 5 parts by weight or less per 1 part by weight of the polymer mentioned above.

Next, herbicides and repellents will be explained.

Any chemical can be used as long as it can be mixed with asphalt and a polymer, but in addition to heat resistance at the manufacturing temperature of the asphalt mixture, safety against toxicity, and corrosivity of metals, In consideration of chemical damage to agricultural products caused by elution of the drug by rainwater, etc., it is preferable to use one that is insoluble in water. However, it is not necessary to use a material that satisfies all of these conditions.

As a herbicide, it is especially a non-selective soil treatment type herbicide.
It is desirable to have a product that is highly effective against perennial weeds, has good stability, and has a long-lasting effect. For example, phenoxy-based products include 3, 5, 6-1-lichloro-2-? Lysyloxyacetic acid [-, generic name "triclopyr", below [] is the generic name],
2.4-dichlorophenoxyacetic acid [2,4-FA] is
As a benzoic type, 3,6-dichloro-2-mer-
+cybenzoic acid [dicamba], 4-amino-3°5.6
-) Diro-2-pyridinecarboxyl alcohol [Pichloram] is 1-bamate-based, methyl N-(4-aminophenylsulfonyl) carbamate [Ashramco, s-ethyl N, N diimbutyl thiocarpamate]・
[Butyrate is nitrile type, 2,4-cyclobenennitrile [dichlorobenyl], 2,6-cyclothiobenzamide (chlorothiamide), and urea type is 3.(3,4-dichlorophenyl), 1- Dinotylurea [diuron], 3.(4chlorophenyl)-1
, 1-dimethylurea [monuron], 3-(5-ethylsulfonyl 1.3.4-thiacyan-2-yl)
-1°3-dimethylurea [ethidimuron], 3. (5t
3-(5tert-butyl-1,3,4-thiadiazol-2-yl)-1,3-
Dimethylurea [tebutiuron 1.3. (5-ethylsulfonyl-1゜3.4-thiadiazol-2-yl)-
1,3 dimethylurea [petitanolco], dinitroaniline series include 2,6-dini-I-rho-N, N-dipropyl-4-trifluoromethylaniline [trifluralin], N-butyl-N-ethyl-2,6-dinitro-4 -trinorolomethylaniline [Hennefin] is a diphenyl ether type, methyl 5-(2,4-dichlorophenoxy)2-nitroheneneate [biphenone Cuzco is a pyrimidine type, 5-promo 3-sec
Butyl-6-methylpyrimidine-2,4 (IH.

3H)-dione [promacyl], 5-promo 3isopropyl-6-methylpyrimidine-2,4(IH,3H)
-dione [isodylco], triazine series such as 2-chloro-4,6-bis(ethylamino)-1,3,5-triazine [simazine], 2-chloro-4-ethylamino-6-imbrovir Minnow 1,3.5-1 riazine [
atrazine], but fatty acids include calcium trichloroacetate [TCA], 2,2-dichloropropionic acid [
Darapon], 2,2,3,3-tetrafluoropropionic acid [tetrapion], and as inorganic compounds, calciucyanamide [cyanamide], ammonium (or sodium or potassium) thiocyanate [thiocyanate], etc. can be used. These may be used alone or in an appropriate mixture. It is preferable to use these in an amount of 0.001 to 5.0% (weight ratio) to the mixture of asphalt, polymer, and filler from the viewpoint of effectiveness and prevention of environmental pollution. The amount may be appropriately selected depending on the location and purpose of use.

Furthermore, as a repellent, one having the effect of preventing the intrusion of weed shoots and roots or tree roots can be used, and for example, phenoxy fatty acid ester can be used as a phenoxy-based repellent. Since it is insoluble in water, there is no risk of it being leached out by rainwater, etc., so it has a long-lasting effect and can be used in large quantities. For example, it can be used in an amount of 0.01 to 5.0% (weight ratio) based on the mixture of asphalt, polymer, and filler. However, the amount to be used may be appropriately selected depending on the location and purpose of use. Additionally, herbicides and repellents may be appropriately mixed and used.

Next, a method for manufacturing a weed control injection joint material or a weed control molded joint material according to the present invention will be explained. Weed control joint material is manufactured by uniformly mixing polymeric substances with asphalt to obtain modified asphalt, adding the necessary amount of filler, and finally adding repellents and the like. As the manufacturing equipment, equipment commonly used for mixing polymeric substances, such as a can having a heating device and a stirring device, a mixer with a heating device, a calender roll, etc., can be used depending on the physical properties such as the viscosity of the mixture.

Forming into a strip can be done by extruding 1 base material into a ribbon shape using an extrusion molding machine, or using the above [1 base material by casting method,
It is made into a sheet of specified thickness by extrusion method, roll method, etc.
It may be cut to a predetermined width with a suitable knife or the like while running soapy water, or it may be cut with a jet of water.

Next, a method for producing a weed-prevention injection joint material or a weed-prevention molded joint material according to the present invention will be described based on Examples.

<Example 1> 800 g of straight asphalt with a penetration degree of 175 was heated and melted, 200 g of styrene-butadiene copolymer was added, and the mixture was kept at 170' (!) and stirred for 3 hours to dissolve uniformly. While continuing to do this, 1000 g of kansui powder was gradually added as a bulking agent and mixed for another 1 hour. 10 g of phenoxy fatty acid ester was added as a repellent and mixed for 10 minutes, then heating and stirring were stopped, and the mixture was allowed to cool naturally to form a repellent. We manufactured a weed control injected joint material.

<Example 2> In the same manner as in Example 1, 10 g of phenoxy fatty acid ester was added and mixed for 10 minutes, then heating and stirring were stopped, and the mixture was poured into a mold lined with release paper to a thickness of 5 mm. After cooling, it was cut into 3 cm wide pieces with a knife under a soapy water droplet to produce a molded weed joint material containing a repellent. This product became viscous and did not fall on the vertical surface of Cement Concrete 1 even at 00°C, and also passed the sagging test at 70°C.

<Example 3> 4 Heat and melt 900 g of straight asphalt with a temperature of 175 degrees, add 100 g of ethylene-vinyl acetate copolymer (vinyl acetate content 15%), and maintain at 170 °C for 6 hours.
The mixture was stirred for 0 hours to uniformly dissolve the mixture. Then, while maintaining the same temperature and continuing to stir, 1000 g of industrial stone powder was gradually added as a bulking agent and further heated and mixed for 1 hour. 10 g of phenoxy fatty acid ester was added as a repellent and mixed for 10 minutes, then heating and stirring were stopped. This was allowed to cool naturally to produce a weed-preventing joint material containing a repellent.

<Example 4> In the same manner as in Example 3, 10 g of phenoxy fatty acid ester was added and mixed for 10 minutes, then heating and stirring were stopped, and this was poured into a mold lined with release paper to form a cylinder with a length of 20 cm and a diameter of 5 cm. It was made into a lump and left to cool. This mass was put into an extrusion molding machine and extruded into a ribbon shape with a thickness of 5 mm and a width of 3 cm, and was wound up with a release paper in between to produce a weed control molding 1'' base material containing a repellent. This one is 0°C
However, it stuck to the vertical cement concrete surface and did not fall, and it also passed the 70°C drip test.

<Example 5> 950 g of strained asphalt l- with a button penetration degree of 175 was heated and melted, and 50 g of styrene-butadiene rubber was added.
The mixture was kept at 170°C and stirred for 3 hours to uniformly dissolve it. After adding 1 g of tebutiuron as a herbicide and mixing for 10 minutes, heating and stirring were stopped, and the mixture was allowed to cool naturally to produce a herbicide-containing weed-preventing joint material.

<Example 6> In the same manner as in Example 5, 1 g of tebutiuron was added and mixed for 10 minutes, then heating and stirring were stopped, and the mixture was poured into a mold lined with release paper to a thickness of 10 mm. After cooling, the mixture was cut into 5 cm widths with a knife under dripping soapy water to produce a herbicide-containing molded joint material. This one is 0
It stuck to vertical surfaces of cement concrete and did not fall even at 70°C, and passed the sag test at 70°C.

<Example 7> 700 g of straight asphalt with a temperature of 175 t1 was heated and melted, 100 g of ethylene-vinyl acetate copolymer (vinyl acetate content 15%) and 200 g of styrene-butadiene copolymer were added, and the mixture was kept at 170°C for 60 hours. Stir to dissolve uniformly. Then, while maintaining the same temperature and continuing stirring, add 5000 g of bentonite l-1 as an amplifying agent to Xinoa, heat and mix for another 1 hour, add 300 g of trifluralin as a herbicide and mix for 50 minutes, then stop heating and stirring. was allowed to cool naturally to produce a weed control injected joint material containing herbicides.

<Example 8> In the same manner as in Example 7, 300 g of trifularin was added and 50 g
After mixing for a minute, heating and stirring were stopped, and the mixture was poured into a mold lined with release paper to form a cylindrical mass with a length of 20 cm and a diameter of 5 cm, and allowed to cool. This mass was put into an extrusion molding machine, extruded into a ribbon shape with a thickness of 3 mm and a width of 2 cm, and rolled with a release paper sandwiched therebetween to produce a molded weed-preventing joint material containing a herbicide. This product sticks to the vertical surface of cement concrete even at 0°C and does not fall, and also at 70°C.
I also passed the nodare test.

<Example 9> 400 g of strained asphalt with a penetration of 175 and 400 g of blown asphal with a penetration of 150 were heated and melted, and 200 g of natural rubber was added thereto.
The mixture was kept at °C and stirred for 24 hours to uniformly dissolve it. After adding 3 g of 2.4-PA as a herbicide and mixing for 10 minutes, heating and stirring were stopped, and the mixture was allowed to cool naturally to produce a herbicide-containing weed-preventing joint material.

<Example 10> In the same manner as in Example 9, 3 g of 2.4-FA was added and mixed for 10 minutes, then heating and stirring were stopped, and this was placed in a mold lined with release paper to a thickness of 5 mm. Poured it in. After cooling, it was cut into 3 cm wide pieces using a water jet to produce a herbicide-containing weed-preventing molded joint material. This product adhered to the vertical cement concrete surface even at 0°C and did not fall, and also passed the sag test at 70°C.

<Example 11> 700 g of blown asphalt with a penetration degree of 150 was heated and melted, 300 g of ethylene-vinyl acetate copolymer (vinyl acetate content 15%) was added, and the mixture was kept at 170°C and stirred for 60 hours to dissolve uniformly. . Then, while keeping the mixture at rotating temperature and continuing stirring, 3000 g of Kansui powder was gradually added as a bulking material, and the mixture was further heated and mixed for 1 hour. Then, 10 g of trifluralin as a herbicide and 20 g of phenoxy fatty acid ester as a repellent were added, and after mixing for 20 minutes, heating and stirring were stopped, and the mixture was allowed to cool down naturally.Weed control injection 1 containing herbicide and repellent. The raw material was manufactured.

<Example 12> In the same manner as in Example 11, 10 g of trifularin and 20 g of phenoxy fatty acid ester were added and mixed for 20 minutes, then heating and stirring were stopped, and the mixture was poured into a mold lined with release paper to a length of 20 cm. The mixture was formed into a cylindrical lump with a diameter of 5 cm and allowed to cool. This mass was put into an extrusion molding machine and extruded into a ribbon shape with a thickness of 5 mm and a width of 3 cm, and rolled with a release paper sandwiched therebetween to produce a molded weed control joint material containing a herbicide and repellent. This product stuck to the vertical cement concrete surface even at 0°C and did not fall, and also passed the sag test at 70°C.

Next, a method for constructing weed control joints for paved roads according to the present invention will be explained based on the drawings.

Construction example l〉 Asphalt pavement surface layer 1 and concrete U-shaped groove 2
1 of the weed control injection joint material produced in Example 1 was applied to the joint 3 between the
The weed-preventing joint material was poured into the joint 3 by heating it to 70'O and injecting it to give it fluidity.

After two years, the site was inspected and no weeds were found.

Construction Example 2> The weed-preventing molded joint material 5 manufactured in Example 2 was attached to the L-shaped gutter 4, and the surface layer 1 of asphalt pavement was paved.

After two years, the site was inspected and no weeds were found.

<Effects of the Invention> As described above, according to the weed prevention injection joint material or weed prevention molded joint material and weed prevention joint construction method for paved roads according to the present invention, weed prevention joints can be easily grown on pavements and concrete structures where weeds are likely to grow. You can easily install weed control joints containing herbicides and repellents between the plants. Moreover, the chemicals are asphalt etc.
This mixed state allows the drug to be effective against weeds, etc., and since the drug is coated and fixed with asphalt, it prevents the drug from leaching out due to rainwater, etc. The effect can be maintained for a long period of time, and since the drug is hardly leached into rainwater or groundwater, and is particularly unlikely to cause chemical damage to crops, it can be applied even on farm roads.

[Brief explanation of the drawing]

The drawing is a sectional view showing an embodiment of the method for constructing weed prevention joints for paved roads according to the present invention. 1...Surface layer 2...U-shaped groove 3...Joint 4...L-shaped gutter 5...Procedure amendment for weed-preventing molded joint material (voluntary) 1. August 17, 1963 Patent Office Director Yoshi 1) Indication of Moon Takeshi 1 case 1988 Patent Application No. 174896? Title of the invention: Weed-preventing injection joint material or weed-preventing molded joint material and method for constructing weed-preventing joints for paved roads 3 Relationship to the supplementary case Patent applicant: Seiki Tokyu, 2-9-3 Shiba Koen, Minato-ku, Tokyo Representative Kazuo Hirano Kogyo Co., Ltd. 5-38-1 Kamata, Ota-ku, Tokyo 5 Contents of the amendment in column 6 of “Detailed Description of the Invention” of the specification subject to the amendment (1) Specification, page 15, 19 In the first line, the statement "Bronze asphalt with a penetration of 150" is corrected to "Bronze asphalt with a penetration of 27." (2) In the 16th line of page 16 of the specification, the statement ``Freon asphalt with a penetration degree of 150'' is corrected to ``Bronne asphalt with a penetration degree of 27''. (3) On page 16, line 19 of the specification, the phrase "maintained at 170°C" is corrected to "maintained at 200°C."

Claims (1)

[Scope of Claims] 1. A weed-preventing joint material comprising a mixture of asphalt and a polymer mixed with a herbicide or/and repellent. 2. A weed-preventing joint material comprising a mixture of asphalt, a polymer, and an extender mixed with a herbicide or (and) a repellent. 3. A molded weed-preventing joint material characterized by mixing asphalt and a polymer with a herbicide or (and) repellent and forming the mixture into a strip. 4. A weed-preventing molded joint material characterized by mixing a herbicide or/and repellent with a mixture of asphalt, a polymer, and an extender, and forming the mixture into a belt shape. 5. A method for constructing weed-proof joints for paved roads, characterized in that the joints on paved roads are constructed by injection or molded joints mixed with herbicides and/or repellents.