KR20180014320A - construction methods of pervious pavement using one pack binder and pervious pavement thereby - Google Patents

Abstract

The present invention relates to a construction method of a pervious pavement material to display a natural color instead of an artificial color and pervious pavement constructed thereby and, more specifically, relates to a construction method of a pervious pavement material using one pack binder and pervious pavement constructed thereby, wherein an eco-friendly resin binder is used as a raw material to prevent environmental pollution in an area, and after construction, the pervious pavement is harmless to health of a pedestrian in addition to a worker using the pervious pavement material.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a permeable packaging material using a one-component biobinder and a method of producing the same,

TECHNICAL FIELD The present invention relates to a method of constructing a permeable packaging material and a permeable packaging made thereby. More specifically, the present invention relates to a method of constructing a permeable packaging material and a permeable packaging using a one-pack type biobinder capable of expressing natural colors rather than artificial colors.

The present invention also relates to a method of constructing a permeable packaging material using a one-component binder which does not cause environmental pollution in the area due to the use of an environmentally friendly resin binder as a raw material, .

The road is a space where vehicles or people pass through, and is packed using various materials to secure the mobility of vehicles and people. The pavement material for roads is used in combination with cement, asphalt, polymers and other durable aggregates. do.

In the case of roads packed with such road packaging materials, there is a problem in that the water is hard to drain due to poor drainage in the case of rains, and the water is slippery or obstructs the walking of the pedestrian.

In order to solve such a problem, various pavement materials and construction methods capable of improving water permeability and water permeability have been developed, for example, Patent Documents 1 to 3.

Patent Document 1 discloses an aggregate aggregate having a particle size of 90 to 100% passing through a 13 mm sieve, 50 to 100% passing through a 10 mm sieve, 30 to 80% passing through a 5 mm sieve and 0 to 10% passing through a 2 mm sieve And 5 - mm sieve, passing through 0 - 40% in 2 - mm sieve and passing 0 - 5% in 0.5 - mm sieve, A process of blending the glass with water and cement and mixing the materials at a water / cement ratio of 30 to 45% so that the slump is in the range of 0 to 4 cm, a step of spraying the foamed material onto the surface of the mixed concrete, The method of claim 1, wherein the surface of the water permeable concrete is polished by a roller.

In Patent Document 2, a color packing layer is packed in an upper layer of a road on which a porous concrete is packed. In the packing layer, 6 to 21 parts by weight of an adhesive composed of an acrylic binder and a coupling agent are mixed with 100 parts by weight of a color stone, Packaging,

Patent Document 3 discloses a cement paste which is obtained by mixing a natural stone / artificial stone aggregate with a white cement paste, wherein the white cement paste is not a paste of general cement but a white cement and an aggregate according to the color of an inorganic pigment and a coupling agent or an additive for strength- The color of the cement paste and the natural stone / artificial stone aggregate is matched to give a natural feel, the surface is gathered by adding the process of grinding / wire brushing the remaining cement paste on the surface and coated with a colorless coating agent if necessary, Extension, surface protection, color development and visibility.

Various types of permeable packaging materials and packaging methods have been developed, but conventional color permeable packaging methods are based on mixing a pigment with a pigment to express a desired color. When a large amount of the pigment is used, the pigment dissolves and flows out over time There is a problem of contamination of the ground water as well as the discoloration of the paint.

Further, mixing of the pigment with the binder increases the viscosity of the binder, and there is a problem that the binder having an increased viscosity penetrates between the aggregates and blocks the gap between the aggregates, thereby deteriorating the water-pervious effect.

The above-mentioned cement system is an inorganic raw material for absorbing water, and when dust or silt particles are introduced in the state of absorbing water, it is present in the permeable packaging material due to the tensile force of the surface etc., And thereafter, there is a problem that the pores are gradually decreased due to the seeds of these particles being added to the raw materials and the like which are additionally introduced at the time of rainfall, resulting in lack of permeability at the end. In addition, there is a problem of bleaching in using cement as a binder. Whitening by the CaO component reacts with the CO ₂ gas in the air remaining in the cement is generated intensively in the spring and fall to be precipitated as CaCO _3, which is generated from dust, car provided by the pedestrian on the particles of the generated CaCO ₃ (NOx, SOx) are piled up, and the packing surface is contaminated by friction such as mold spores and walking. In addition, since the agglomerated particles flow into the packing material to fill the gap, the durability There is a problem in that it causes deterioration and lack of permeability.

In addition, in the case of a water-permeable packaging material which is applied using a resin binder, volatile organic compounds such as toluene, xylene, and xylene which are prohibited or avoided from being used as harmful substances in the human body are used, There is a disadvantage that the harmful component is exposed to the pedestrian after the packaging.

Further, in the case of a binder made of a conventional volatile organic compound, there is a problem of accelerating a fire by acting as a fuel when a fire occurs.

1. Korean Patent No. 10-0240140 2. Korean Patent No. 10-0775993 3. Korean Patent Publication No. 10-2010-0045557

The present invention has been developed to solve the problems of the prior art as described above, and it is an object of the present invention to provide a method of constructing a permeable packaging material using a one-component binder capable of expressing natural colors rather than artificial colors, and a permeable packaging made thereby .

The present invention also relates to a method of constructing a permeable packaging material using a one-component binder which does not cause environmental pollution in the area due to the use of an environmentally friendly resin binder as a raw material, And to provide the above objects.

To accomplish the above object, there is provided a method of constructing a permeable packaging material using a one-component binder, comprising the steps of: (a) forming a base layer by flattening a hearth of a base layer; A mixture of 12 to 17% of cement, 0.3 to 0.5% of barium sulfate, 3.8 to 5.1% of blast furnace slag, 5 to 7% of silica sand, 0.07 to 0.15% of sodium gluconate and 74 to 12% of granular crushed stone aggregate A drainage layer forming step S2 of applying a drainage layer base material manufactured by the method of the present invention to a predetermined thickness; A drainage layer curing step S3 for curing the laminated drainage layer at room temperature for 24 to 36 hours; A primer layer construction step (S4) in which a one-component dispersed polyurethane primer is applied and infiltrated onto a cured drainage layer and cured for a predetermined time; A one-part type bio binder in which a mixture of a mixture of a bio polyol and a hard polyether polyol on a primer layer and a curing agent composed of an isocyanate compound at a weight ratio of 30 to 100: A permeable packing layer for laying a permeable packing layer material having a mixing ratio of 100: 3.5 to 12 by weight of a mixture ratio of an aggregate for a permeable packing layer and a one-pack type biobinder in a weight ratio of 3 to 9 mm, And a construction step (S5).

It is preferable that the drainage layer construction step (S2) is provided with a joint to prevent cracks from occurring due to expansion and contraction of the lining layer in the drainage layer curing step (S3).

The water-permeable packaging layer construction step (S5) is a step of making the one-component biobinder made of a mixture of polyol and isocyanate low in viscosity to facilitate the horizontal operation, and the surface of the installation tool such as roller or soil hand, The surface can be preheated to 40 to 80 degrees so that the layer material is not adhered.

In the permeable packaging layer construction step S5, it is preferable to further provide a masonry joint in order to suppress cracks and cracks which may be caused by shrinkage and expansion of the permeable packaging layer material installed by compaction and the drainage layer.

A protective layer construction step of applying a protective material made of a low-viscosity polyurethane made of a polyol and isocyanate to the surface of the permeable packing material layer formed by the step of constructing the permeable packing layer (S5) may be further performed.

The permeable packaging material using the one-pack type binder to be applied by the above-described method comprises (A) a surface layer of the layer (G) is finely coated, followed by coating with a thickness of 5 to 25 mm, (B) is laminated on the base layer and comprises 12 to 17% of cement, 0.3 to 0.5% of barium sulfate, 3.8 to 5.1% of blast furnace slag, 5 to 7% of silica sand, 0.07 to 0.15% of sodium gluconate, A porous concrete drainage layer prepared by mixing 74% of crushed stone aggregate; (C) a primer layer formed on the top of the drainage layer and consisting of a one-component dispersed polyurethane primer which is cured at normal temperature and does not cause pinholes and does not expand even when contacted with water; (D) A one-part type bio binder in which a mixture of a mixture of a mixture of a bio polyol and a hard polyether polyol and a curing agent composed of an isocyanate compound in a weight ratio of 30 to 100: 3 to 5 mm of aggregate, 5 to 7 mm of aggregate and 7 to 9 mm of aggregate are mixed with the aggregate for the permeable pavement layer composed of two or three kinds, mixed with a blender, further added with 0.5 to 1.5 mm of fine particles, And a water permeable packing layer which is completed by placing and mixing the water permeable packing layer mixed on the surface of the primer layer coated on the water discharging layer.

It is preferable that the aggregate for the permeable packing layer is made of a mixture aggregate of at least one of natural pebbles, crushed aggregate material having rounded crumbly aggregates, color aggregate, natural volcanic stone, ceramic crushed aggregate, brick crushed aggregate and recycled aggregate. Especially, it is not preferable to use only a single size because the use of aggregate greatly affects the compressive strength, bending strength and slip resistance as well as permeability and pore formation, and it is preferable to use aggregates for two or three kinds of permeable pavement layers . Natural volcanic stone, for example, is red in color and has a rough surface, which shows very strong resistance to slip. However, it has a high absorptivity of the binder and low strength, so that it is difficult to use a single product. However, when the natural aggregate having high strength such as silica sand or black sand is used, the disadvantage of the volcanic stone is overcome, and the volcanic stone is positioned around the natural aggregate, thereby increasing the slip resistance. . In addition, if a single aggregate of 7 to 9 mm or 3 to 5 mm is used, the aggregate appears to be uniformly distributed, but since the granulation rate of single particles is lowered, there is a limit in setting a packing layer having a cracked distribution, Because of the high possibility of the gradient, appropriate mixing conditions depending on the particle size of the aggregate are necessary for the compressive strength and the permeability. Preferably, the aggregate of 7 to 9 mm is used in an amount of 30 to 40% by weight based on 100% by weight of the aggregate, 30 to 40% by weight of the aggregate of 5 to 7 mm and 40 to 50% by weight of the aggregate of 3 to 5 mm When two types are used, it is preferable to use 30 to 40% by weight of relatively thick aggregate and 60 to 70% by weight of small aggregate.

The filler aggregate may be further mixed with the natural or artificial aggregate having a size of 0.5 to 1.5 mm so as to be positioned on the surface of the aggregate for the permeable and packaging layer. A preferable use range is 5 to 20 parts by weight of the filler-aggregate material for 100 parts by weight of the aggregate for the permeable packing layer. Rechargeable auxiliary aggregate can be installed on the surface and interface of 3 ~ 5mm aggregate, 5 ~ 7mm aggregate or 7 ~ 9mm aggregate, which is the main aggregate, and it is possible to increase the granulation rate during laying. In case of using soybean gravel or natural gravel together with slippery aggregate Has the effect of greatly improving the slip resistance by the pin effect and the drag effect.

For the purpose of enhancing the tensile force and increasing the tensile strength of the one-pack type binder, a natural fibrous mineral may be further added to the permeable packing layer. It is preferable that the particle size of the fibrous phase is in the range of 2 to 20 占 퐉. As the fibrous particles are mixed with the one-component binder, it is possible to increase the initial viscosity so as to maintain the molding form at the time of construction, Can improve the warpage and tensile force of the package in accordance with the transverse characteristics of the particles, thereby providing an advanced polyurethane-based package such as a fiber reinforcing effect of concrete and the like. The preferred use range is 30 to 100 parts by weight of fibrous minerals per 100 parts by weight of the one-pack type bio binder for the permeable packing layer. When the amount is less than 30 parts by weight, it is difficult to expect a uniform distribution of fibrous minerals and an improvement in tensile strength. When the amount exceeds 100 parts by weight, the fluidity is very low due to an increase in viscosity, There is a problem that the coupling force is lowered because it is difficult to wrap.

Further, a protective layer may be further formed on the surface of the permeable packing layer, and the protective layer may be composed of a low viscosity polyurethane composed of a polyol coated with a spray or a roller, and an isocyanate.

As described above, the permeable packaging material and the construction method using the one-pack type binder according to the present invention can provide the coloring of the aggregate itself, thereby providing the road packaging material free from discoloration.

Further, the present invention has an effect of providing a water permeable packaging material having a durability life for a long time by using a polyurethane binder which does not absorb water.

The present invention also provides a road pavement material which does not absorb water and does not react with a foreign substance and moves little dust or particles together with water to reduce the decrease of pores inside the pavement, There is an effect to provide.

Further, the present invention does not use cement on the surface, and prevents infiltration of mold spores in the air without generating whitening on the surface or the package, thereby maintaining the aesthetics of the package for a long time.

Further, since the present invention uses an environmentally friendly resin binder as a raw material, there is no environmental pollution in the area, and it is possible to provide a pewter package which is not harmful to the health of the pedestrian after construction as well as the operator who uses it.

1 is a cross-sectional view showing a laminated structure of a permeable packaging material using a one-component binder according to the present invention
2 is a flowchart illustrating a method of constructing a permeable packaging material using a one-component binder according to the present invention.
3 is a photograph of different examples of aggregates used in the permeable packaging material using the one-component binder according to the present invention
FIG. 4 is a photograph of an example of a permeable packing material using the one-component binder according to the present invention

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It is to be understood, however, that the invention is not to be limited to the specific embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Like reference numerals are used for like elements in describing each drawing. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Since the color of the aggregate itself can be expressed or expressed, there is no discoloration, and an environmentally friendly resin binder is used as a raw material. Therefore, there is no environmental pollution in the area, and the workers who use it and the health of pedestrians after construction are harmed Do not incur.

In the permeable packaging method using the permeable packaging material using the one-component binder according to the present invention, first, the hearth of the base layer is planarized, and a base layer is formed by compaction of 5 to 25 mm of lumps to a predetermined thickness (S1).

The base layer construction step (S1) is performed by carefully selecting the hearth surface and concentrating 5 to 25 mm of rubble so as to express the molding strength designed with a 10-ton roller.

On the base layer, 12 to 17% of cement, 0.3 to 0.5% of barium sulfate, 3.8 to 5.1% of blast furnace slag, 5 to 7% of silica sand, 0.07 to 0.15% of sodium gluconate, (S2) is applied to a drainage layer base material prepared by mixing with a predetermined thickness.

In the drainage layer construction step S2, cracks due to expansion and contraction may occur during the curing process of the stacked drainage, so that it is preferable to provide a joint during the installation to prevent this. Since joints of general packaging material are cut after curing is completed, if the curing is cut before curing, the problem of cracks, cracks, peeling, etc. can be eliminated before the structure is stressed. It is desirable to install a joint.

The laminated drainage layer is cured at room temperature for 24 to 36 hours (S3).

In the drainage layer curing step (S3), the surface is covered with vinyl or nonwoven fabric so that sufficient compressive strength is exhibited.

When the drainage layer is cured, a one-component aqueous dispersion type polyurethane primer is applied and infiltrated onto the cured drainage layer and cured for a predetermined time (S4)

The primer layer construction step (S4) is to block the water layer that can flow in between the drainage layer and the water-permeable packing layer, and to increase the binding force with the drainage layer. The constitution of the primer layer is not particularly limited, and it is possible to express a grid, a nonwoven fabric and similar functions in addition to the urethane-based primer. It is preferable to use a urethane based resin having the same components as the upper layer as the main component.

It is preferable that the drainage layer construction step S2 is provided with a joint to prevent the drainage layer from cracking due to expansion and contraction in the drainage layer curing step S3.

In the above-mentioned drainage layer and primer layer structure, when movement of an overweight vehicle is expected, it is possible to use an auxiliary layer material in which a primer layer is excluded and a nonwoven fabric having good drainability and a grid are integrated. Since the nonwoven fabric has excellent drainage performance and the grid is excellent in the detachment of the aggregate and the suppression of the fluidity, the permeable packing material applied with the heavy load compaction is separated from the lower layer and the upper layer, and the permeable packing layer material is perfect for the nonwoven fabric / The permeable packaging material layer of the upper layer is fixed by a polyurethane based binder and is characterized by weak elasticity such as warpage, so that partial damage or cracks There is a feature that does not occur.

A water permeable packing layer is formed on the primer layer (S5).

In the step of constructing the permeable packing layer (S5), a mixture of a mixture of a bio polyol and a hard polyether polyol is mixed with a curing agent composed of an isocyanate compound at a weight ratio of 30 to 100: 30 to 100 A water permeable packing layer material having a mixing ratio of 100: 3.5 to 12 by weight of a mixture of an aggregate for a permeable pavement layer and a one-pack type biobinder is mixed with a primer layer To the surface.

The one-pack type biobinder is not particularly limited, but it is preferable to use biomass extracted from plants. This is to protect workers from fire or gas poisoning that may arise from toxic organic solvents.

It is preferable that a heating device is installed on the contact surface of the horizontal scree and the contact surface of the earth knife in the permeable packaging layer construction step S5 and the surface temperature is preheated to be 40 to 80 degrees. This preheating sharply reduces the viscosity of the one-pack type bio binder, which is a mixture of polyol and isocyanate, so that it is easy to horizontally grasp at the installation stage and the effect is not to adhere to the surface of the soil knife or screed.

After leveling, leave the permeable pavement layer laying for 20 ~ 50 minutes and allow the room temperature curing reaction to proceed to increase the viscosity of the packaging material. When the pressure is applied to the pitcher packed layer material which is built up by using a hand or a tool with increased viscosity and the force of pressing without elasticity is applied as it is, that is, when the binder coated outside the aggregate is compacted, When the pitcher packing material is squeezed by its own weight, the roller self-weight is transferred to the permeable packing material layer as it is, and the roller compaction is carried out when the compression force is maintained as it is without being inflated. In the case of such a roller compaction, a better effect can be obtained in the roads where the vehicle traffic is frequent, or in the areas of the north and north where a strong coupling force is required. The construction by the roller compaction force is effected by preliminarily preventing the possibility of damage due to weak compaction when a vehicle having a large load is moved in the future by pressing the heavy material under a heavy load in a region where a heavy load is expected, To induce strong intensity expression.

In the present invention, when heavy load is applied, the light weight packaging material of the thickness of about 20 mm can move the heavy weight vehicle.

In the case of resin-based packaging for existing vehicles, it is composed of a sealed type of packaging material. Therefore, the rainwater loss and the resin binder account for about 20% of the amount of the powder and the aggregate. However, % Of binder can be used and heavy load can be used to pass the vehicle, thus preventing the loss of rainwater.

When constructing a package in which a vehicle is expected to move, a nonwoven fabric and a grid different from the above-mentioned heavy load compaction are constructed. At this time, the primer can be omitted because it is a construction element for increasing the adhesion between the lower layer and the upper layer. Regardless of the presence or absence of moisture in the drainage layer of the lower layer, a surface-layered waterproofing layered material is laid, and then flattened and pressed with a light roller or trowel. The nonwoven fabric and the grid are not particularly limited, and any nonwoven fabric and grid can be used as long as they can perform the same functions that can be purchased on the market. It is preferable that the nonwoven fabric should have drainage of water and the grid should have pixels about 10 mm in diameter to the extent that the aggregate to be used falls inside the grid and the pixels of the grid can be more than that according to the weight of the vehicle.

In the case of a permeable pavement layer material with reduced fluidity, a cross roller coated with a highly releasable material such as Teflon or a heat roller screed with a hot wire is used for installation and compaction.

In addition, in the step of constructing the permeable packaging layer (S5), it is preferable to further provide a masonry joint in order to suppress cracks and cracks that may be caused by contraction and expansion of the permeable packaging layer material and the drainage layer installed by compaction. In general packaging, joints are formed after the curing is completed, and silicon or the like is inserted into the mold to inhibit cracking due to expansion and contraction. In the present invention, by installing joints during the construction process, There is an advantage that the air can be shortened because the crack is not generated due to stress and the pavement is completed by natural curing after compaction.

A low viscosity silicone urethane or acrylic urethane binder composed of a polyol, isocyanate, and silicone is applied to the surface of the permeable packing material layer formed by the step of constructing the permeable packing layer (S5), so that a protection layer construction step (S6).

The protective layer applied in the protective layer construction step S6 is for improving the durability and improving color deformation and abrasion of the upper part of the installed packaging material.

Hereinafter, the structure of the permeable packaging made by the above method will be described in detail.

As shown in FIG. 1, the permeable packing according to the present invention comprises: (A) finishing a road surface of a ground layer (G), applying 5 to 25 mm of rubble to a predetermined thickness, and finishing the ground layer (10); (B) is laminated on the base layer and comprises 12 to 17% of cement, 0.3 to 0.5% of barium sulfate, 3.8 to 5.1% of blast furnace slag, 5 to 7% of silica sand, 0.07 to 0.15% of sodium gluconate, A porous concrete drainage layer 20 made by mixing 74% of granular crushed aggregate; (C) a primer layer (30) composed of a one-component aqueous dispersion type polyurethane primer which is applied on the top of the drainage layer and hardened at room temperature and does not generate pinholes even when contacted with water and does not swell; (D) A one-part type bio binder in which a mixture of a mixture of a mixture of a bio polyol and a hard polyether polyol and a curing agent composed of an isocyanate compound in a weight ratio of 30 to 100: And a permeable packing layer 40 in which two or three types of aggregate for a permeable pavement layer having a size of 3 to 5 mm, 5 to 7 mm and 7 to 9 mm are mixed on the surface of the primer layer.

Fig. 3 is a photograph of a different example of the aggregate used in the present invention, and Fig. 4 is a tomographic photograph of the packaging material made by the present invention.

The base layer 10 is a layer for flattening the road to be packaged and integrating the packaging material with the ground layer. As described above, the ground layer 10 is evenly spread from 5 to 25 mm, and then compacted by a roller having a high weight (10 tons) So as to exhibit strength.

A drainage layer (20) is stacked on the base layer, and the drainage layer (20) is formed by compaction after installing a crushed stone having a particle size of 12 to 15 mm.

The drainage layer 20 is a layer for allowing the water on the road surface to be easily drained. The special cement mixing conditions are as follows: 12 to 17% of cement, 0.3 to 0.5% of barium sulfate, 0.3 to 0.5% of blast furnace slag, The porous concrete is composed of 5.1%, 3 ~ 5% silica sand, 0.07 ~ 0.15% sodium gluconate and 74 ~ 12% granular aggregate and 74% A compression strength of 150% or more can be exhibited. The cement used for the drainage layer is usually Portland cement, white cement, alumina cement, and geopolymer cement, and any one or more of them can be used. Barium sulfate is in the structure formation of the drainage layer is in the ion state of the water in contact with the OH generated in and binder composition to Ba ^{2 + -} in the ion reacting with Ba (OH) re-precipitate as an insoluble compound of the _second place and a hydraulic compound Since the solubility of Ca (OH) ₂ (solubility 0.129%) and CaSO ₄ (solubility 0.208%) are less than 1 / 10,000 ~ 1 / 100,000,000 due to calcium ion in the form of intrusion and substitution, And even when contacted, the water resistant property can be maintained. Since these insoluble compounds are well known as adsorbents that adsorb harmful heavy metals as well as very low solubility, they have a property of being able to purify by adsorbing harmful heavy metals in the water.

The blast furnace slag is generally a three-kind slag used as an admixture of cement, and is not particularly limited, but it is preferable to use a three-kind slag having an average particle size of 5 to 10 mu m. The blast furnace slag particles of ultra-fine particles are obtained by breaking the latent hydraulic film outside the particles from the OH ^- ions provided from the used cement and cutting the covalent bonding substances such as Si-O and Al-O contained therein, It is possible to form a tightly coupled body. In addition, barium, which is the cation described above, plays a role of enhancing the water resistance while being present on the principle of substitution and invasion in the generation of the CSH hydraulic insoluble compound. In addition, blast furnace slag has an effect of reacting with cement to enhance long - term strength, and is used as a role to impart acid resistance and alkali resistance to cement composition.

The use of silica sand No. 6 was used to increase the freeze-thaw resistance of porous concrete. It is preferable to use silica sand in an amount of 5 to 10 parts by weight based on 100 parts by weight of the aggregate. If it is used in an amount of 5 parts by weight or less, it is difficult to secure the strength and proper air amount of the cement. If the amount exceeds 5 parts by weight, the porosity decreases and it becomes difficult to move the water quickly to the underground.

The sodium gluconate was used as a water reducing agent. Although not particularly limited, both powders and liquid phases can be used. If other water reducing agents are used, the compressive strength can not reach the target value.

The above aggregate is not particularly limited and is not limited. It is possible to use recycled aggregate produced from waste concrete, natural soybean gravel, crushed stone of natural rock, and the like. In particular, aggregate having a rounded shape is preferable.

There is a problem that it is difficult to achieve the physical properties of the drainage layer when the material constituting the used drainage layer is out of the use range.

After the lamination is completed, the drainage layer 20 is cured at room temperature for 24 to 36 hours and then hardened. At this time, the surface of the drainage layer 20 is covered with vinyl or the like and vi- cally cured.

The primer layer 30 is a layer for allowing the water-permeable packaging layer 40 to be laminated thereon and the water-retaining layer 20 to be firmly adhered thereto. The primer layer 30 is formed by applying a one-component aqueous dispersion type polyurethane primer using a roller or a spray, And then cured for a certain period of time.

The water dispersible polyurethane primer can be dispersed in water such as water-dispersed polyurethane (Patent No. 0728809) prepared from a polyurethane prepolymer prepared from a polyol containing a polyisocyanate and a caprolactone polyol containing a carboxyl group, And it is possible to use a product which can apply the primer even in the presence of water in the lower layer by using a similar material although the material is not particularly limited. Such water-dispersed polyurethane does not cause problems such as foaming or pinholes by reacting with water even if there is water on the surface. Therefore, it is advantageous that the curing of the drainage layer provided on the lower layer is insufficient, have.

If it is difficult to use the primer layer, it is also possible to use an auxiliary layer in which the nonwoven fabric and the grid are integrated.

The water permeable packaging layer 40 is a layer that substantially becomes a road surface and is formed by using natural aggregate, natural volcanic stone, ceramic crushed aggregate, and brick aggregated aggregate which are colored by heating natural gravel, crushed stone and silica sand to a predetermined temperature It is possible.

The permeable packing layer 40 is a one-pack type container in which a mixture of a mixture of a bio polyol and a hard polyether polyol and a curing agent composed of an isocyanate compound in a weight ratio of 30 to 100: A mixture of aggregate for a permeable pavement layer and a one-pack type bio binder was mixed in a weight ratio of 100: 3.5 to 12 by mixing the aggregate for a permeable pavement layer having a particle size of 3 to 9 mm in a single-component biobinder using a biobinder, do.

If the mixing ratio of the one-pack type bio binder and the aggregate for the water-permeable packing layer is not more than 3.5% by weight based on 100 parts by weight of the aggregate for the water-permeable packing layer, the compressive strength of the permeable packing material is lower than the standard value, If the amount of the one-pack type biobinder is more than 12% by weight with respect to 100 parts by weight of the aggregate for a pavement pavement layer, the price becomes extremely high, which leads to a lack of economical efficiency. If the same amount is added, the pore of the permeable packaging material is insufficient and the permeability function can not be developed. Since the surplus biobinder flows down from the aggregate to fill the drainage layer, it is difficult to secure the physical properties to be obtained in the present invention .

The aggregate for the permeable packing layer used in the permeable packing layer 40 may be prepared by using crushed stones prepared by crushing various rocks, or by using crushers or the like to trim corners or the like to use aggregate like natural pebble And can be selected and selected to be in the range of 3 to 5 mm, 5 to 7 mm, and 7 to 9 mm.

5 to 20 parts by weight of a natural or artificial aggregate having a size of 0.5 to 1.5 mm with respect to 100 parts by weight of the 3 to 9 mm aggregate is added to the aggregate for the permeable packing layer to be mixed in the permeable packing layer 40 can do.

The filler-assisted aggregate serves to fill the voids between the aggregates for the permeable pavement layer.

The filler-assisted aggregate is present between the aggregates for the permeable-packing layer and acts to increase the flexural strength of the permeable-packing material by 1.5 times. The aggregate for the permeable-packing layer may be attached to the surface of the aggregate for the permeable- The slipperiness can be alleviated and the ease of the pedestrian can be improved.

The permeable pavement layer may also be supplemented with fibers for the purpose of further improving the bending strength and as a potential thickener to prevent material separation due to the weight of the aggregate.

The fibrous material is not particularly limited, and natural fibrous minerals such as kaolinite and wollastonite can be used, and artificial fibers such as nylon fiber, PP fiber, and PE fiber can be used. Preferably, the particle size of the fibrous mineral is 2 to 20 占 퐉, and since the fiber length of the fibrous mineral is 2 to 20 占 퐉, dispersibility is poor, mixing is problematic. Further, it is preferable to use fibers having a length in the range of 0.5 to 2 mm. This is because when the fiber is too long, a concentration gradient occurs in the mixing and the compression strength is lowered.

The amount of the fibers to be used is preferably in the range of 30 to 100 parts by weight based on 100 parts by weight of the one-pack type biobinder. Only natural fibers or artificial fibers may be used, and they may be mixed and used. More preferably, 95 to 90% by weight of natural fibers are used for 5 to 10% by weight of the synthetic fibers. If the amount of fibers used exceeds the setting range, there is a problem that the workability is lost or the desired physical properties can not be obtained. The use of natural fibers has the advantage of being able to be used as a thickener for the binder since it contains fine particles as well as fibers.

In addition, for the purpose of improving compressive strength, it is possible to use inorganic filler instead of fiber in the permeable packing layer. The inorganic filler imparts fillability between the aggregate, silica sand and binder and acts to increase the density at compaction, thereby improving the compressive strength and flexural strength.

The inorganic filler is preferably used in an amount of 0.5 to 5 parts by weight based on 100 parts by weight of the aggregate (including auxiliary aggregate for charging). If it is used in an amount of 0.5 part by weight or less, it is difficult to develop the physical properties to be improved. If the amount is more than 5 parts by weight, molding with the same amount of binder is difficult. A more preferable amount is 1 to 3 parts by weight based on the combined weight of the aggregate and the aggregate.

The one-pack type bio-binder constituting the permeable packaging layer 40 is preferably excellent in transparency and exhibits bonding strength and hardness. It is preferable that the biopolymer of a biomass manufactured using environmentally friendly plants and the hard polyesters polyol use.

A protective layer 50 may be further formed on the surface of the permeable packaging layer 40 of the permeable packaging material of the present invention.

The protective layer 50 is a layer provided to improve the durability of the water-permeable and packaging layer and improve color deformation and abrasion. The protective layer 50 is made of a low-viscosity silicone urethane or acrylic resin composed of a polyol, isocyanate, Based urethane-based protective layer.

The low viscosity urethane used in the protective layer 50 may be used in an amount of 0.15 to 0.3 L / m ² .

≪ Examples > -Preparation method of permeable pavement using one-component binder and permeable pavement

(Examples 1 to 14 and Comparative Examples 1 to 2) using one-pack type binder.

[Example 1]

1) selecting the hearth surface well and setting up the auxiliary layer by self-weighting to develop the molding strength designed with a 10-ton roller with 5 ~ 25 mm rubble;

2) 74% by weight of crushed stones (13% by weight of aggregate, 12% by weight of aggregate, 85% by weight of aggregate in 4 to 10 mm and 3% by 4 mm under) and 13% by weight of ordinary Portland cement Placing and compacting a porous concrete drainage layer composed of 14.7% by weight of barium sulfate, 0.4% of barium sulfate, 4.8% by weight of blast furnace slag, 6% by weight of silica sand, and 0.1% by weight of sodium gluconate using a roller screed;

3) a joint installation step in which the installed drainage layer controls cracks which may be caused by shrinkage and expansion during the curing process;

4) Vinyl curing for 24 hours to 36 hours at room temperature after the drainage layer is completed;

5) a primer installation step in which the water dispersible polyurethane resin is impregnated on the road and infiltrated with a roller or a spray on the installed drainage layer and cured for a predetermined time;

6) The aggregate for the permeable pavement layer used in the surface layer was an aggregate obtained by mixing 40 wt% of 5 ~ 7mm and 60 wt% of hard gravel having a size of 3 ~ 5mm, which are commercially available in the market. The mixed aggregate was weighed so that the mixed aggregate was 96.5% by weight in the mixed aggregate and one-pack type biobinder part, and 3.5% by weight of the one-part type biobinder composed of 38.5% by weight of polyol and 61.5% by weight of isocyanate- Adding to the aggregate and mixing with the aggregate for 30 seconds using a mixer for concrete mixing;

7) adding 5 parts by weight of fine silica sand or sand having a size of 0.5 to 1.5 mm to 100 parts by weight of the aggregate to the uniformly mixed mixture, thereby positioning the particles around the aggregate surface or the aggregate;

(8) a step of horizontally arranging the mixture for the permeable pavement layer with a uniform thickness using a screed or a trowel or the like; (where the contact surface of the horizontal screed or the contact surface of the soil hand is heated or heated The surface temperature exceeds 40 ° C to suppress the filling of the material and the surface tension)

9) allowing the mixture for the permeable pavement layer to stand for 20 to 50 minutes to induce an increase in natural viscosity;

10) When the viscosity of the mixture for the permeable packing layer is increased and the mixture is pressed by the force of gravity, when the viscosity reaches to the kneaded level without the binder on the hand, the compaction is performed by using 1 ton roller, roller screed, or compactor ; (In this case, the one-toned roller should be compacted without applying any vibration.) If the viscosity increased by vibration decreases, the binding force of the binder decreases and the packing material can not be completed. As a rule, frequent compaction can cause damage to the surface of the aggregate.

11) installing a joint for suppressing cracks due to temperature difference between the lower layer and the upper layer and shrinkage and expansion of the used material, in the drainage layer and the permeable packaging material constituted by the roller compaction;

12) A step (0.2L / m ² ) in which the same low-viscosity polyurethane is applied to the surface of the finished packaging material by spraying or rolling to improve durability and improve color deformation and abrasion A pitcher packaging material and a method of construction thereof.

 The physical properties of the permeable packaging material according to Example 1 are as follows.

 The specimens of porous concrete used as the drainage layer were prepared by compacting three times of compressive strength and porosity of Φ100 × 200mm, and the flexural strength of the specimens was prepared by filling three molds of 40mm × 40mm × 160mm. 28 days compressive strength was 35.5MPa, porosity was 16% and flexural strength was 7.2MPa.

  The permeable pavement layer material mixed according to Example 1 was filled in a 50 × 50 × 50 (mm) cube mold to measure the physical properties such as compressive strength. As a result, the compressive strength at 28 days was 21.8 MPa, porosity was 26% and flexural strength was 5.2 MPa.

[Example 2]

The same procedure as in Example 1 was carried out except that the mixing ratio of the aggregate and the binder used in the surface layer was changed from 95% by weight of the aggregate to 5% by weight of the binder. As a result, the 28th day compressive strength was 24.3MPa, the porosity was 24%, and the flexural strength was 7.4MPa.

[Example 3]

The same procedure as in Example 1 was carried out except that the mixing ratio of the aggregate and the binder used in the surface layer was changed from 93% by weight of the aggregate to 7% by weight of the binder. As a result, the compressive strength at 28 days was 28 MPa, the porosity was 16%, and the flexural strength was 8.5 MPa.

[Example 4]

The same procedure as in Example 1 was carried out except that the steel sand in the surface layer was changed to marbool (marble aggregate selected by washing with water to 3 to 5 mm) and the mixture ratio of the aggregate and binder was changed to 95% 5% by weight. As a result, the compressive strength at 28 days was 15 MPa, the porosity was 23% and the flexural strength was 4.5 MPa. This strength development is characterized by the fact that the compressive strength of the marbles differs from that of the strong granules, and the powder components contained in the marbles absorb the binder, which is why the binder is not uniformly distributed on the surface of the aggregate.

[Example 5]

The mixing ratio of the aggregate and the binder was changed to 90 wt% of the aggregate and 10 wt% of the binder. The amount of binder used increased as the residual powder component of washed marbles. As a result, the compressive strength at 28 days was 22 MPa, the porosity was 21%, and the flexural strength was 6.5 MPa.

[Example 6]

Except that the granules used in the surface layer were mixed at a weight ratio of 1: 1 except for the strong rods. The mixing ratio of the aggregate and the binder was 95 wt% of the aggregate and 5 wt% of the binder %, Respectively. As a result, the compressive strength at 28 days was 21 MPa, the porosity was 22%, and the flexural strength was 5.7 MPa.

[Example 7]

The same procedure as in Example 1 was carried out except that the aggregate used in the surface layer was changed to a mixture of 40 wt% of black fescue and 60 wt% of brick crushed aggregate (3 to 5 mm), and the mixing ratio of the aggregate and binder was 93 wt% %, And 7 wt% of a binder were used. As a result, the 28th day compressive strength was 17MPa, the porosity was 20%, and the flexural strength was 5.3MPa.

[Example 8]

The same procedure as in Example 1 was carried out except that the aggregate was changed to elvan aggregate except for the strong gravel. As a result, the 28th day compressive strength was 18.3MPa, the porosity was 23%, and the flexural strength was 5.9MPa.

[Example 10]

The same procedure as in Example 1 was carried out except that the aggregate was changed to silica sand having a range of 3 to 5 mm. As a result, the 28th day compressive strength was 19.6MPa, the porosity was 24.8%, and the flexural strength was 6.3MPa.

[Example 11]

The same procedure as in Example 2 was carried out except that the aggregate was changed from natural black sheath 7 to 9 mm 30 wt.%, Hard gravel 3 to 5 mm 50 wt.%, Masasite 5 to 7 mm 20 wt. As a result, the 28th day compressive strength was 19.5MPa, the porosity was 24% and the flexural strength was 6.8MPa.

[Example 12]

The same procedure as in Example 2 was carried out except that 0.1 parts by weight of fibrous material in which wollastonite and nylon fibers were mixed at a ratio of 95: 5 was added to 100 parts by weight of the aggregate and the aggregate of the filler- As a result, the compressive strength at 28 days was 18.9MPa, the porosity was 21% and the flexural strength was 9.6MPa.

[Example 13]

The procedure of Example 5 was repeated except that 50 parts by weight of cement powder was added to 100 parts by weight of the one-component binder. As a result, the compressive strength increased to 28 MPa at 28 days, the porosity decreased to 17%, and the flexural strength was 7.6 MPa.

[Example 14]

A nonwoven fabric / grid exhibiting a performance of 10 × 10 ^-1 cm / sec was installed on the drainage layer and the upper permeable packing layer material was treated with a trowel Was used for plastering.

[Comparative Example 1]

The same procedure as in Example 1 was carried out except that the ratio of the aggregate to the binder used in the surface layer was changed to 97.5% by weight of aggregate and 2.5% by weight of binder. As a result, the compressive strength at 28 days was 9.6MPa, the porosity was 28% and the flexural strength was 1.4MPa. These results are due to the insufficient amount of binder used and therefore the binder is not coated on the surface of the aggregate, resulting in low bonding strength.

[Comparative Example 2]

The same procedure as in Example 1 was carried out except that the aggregate used in the surface layer was used as a single aggregate having a natural blackness of 7 to 9 mm and changed to 96.5% by weight of an aggregate and 3.5% by weight of a binder. As a result, the compressive strength at 28 days was 12.4MPa, the porosity was 31% and the flexural strength was 3.4MPa. These results show that the excessively large voids and the area of adhesion between the aggregate and the aggregate are small and the overlapping area between the aggregate and the aggregate is small and the compressive strength and the bending strength are low because the bonding site where the binding force of the binder is sufficiently expressed is relatively small .

10: Base layer
20: Drainage layer
30: Primer layer
40: Pitcher packing layer
50: Protective layer

Claims (11)

A method of constructing a permeable packaging material,
(S1); a base layer construction step (S1) for planarizing the hearth of the base layer and setting the base layer by compaction of 5 to 25 mm rubble at a constant thickness;
A mixture of 12 to 17% of cement, 0.3 to 0.5% of barium sulfate, 3.8 to 5.1% of blast furnace slag, 5 to 7% of silica sand, 0.07 to 0.15% of sodium gluconate and 74 to 12% of granular crushed stone aggregate A drainage layer forming step S2 of applying a drainage layer base material manufactured by the method of the present invention to a predetermined thickness;
A drainage layer curing step S3 for curing the laminated drainage layer at room temperature for 24 to 36 hours;
A step (S4) of applying a primer layer for applying and impregnating a one-component aqueous dispersion type polyurethane primer onto the cured drainage layer and curing the primer layer for a predetermined time;
A one-part type bio binder in which a mixture of a mixture of a bio polyol and a hard polyether polyol on a primer layer and a curing agent composed of an isocyanate compound at a weight ratio of 30 to 100: A permeable packing layer for laying a permeable packing layer material having a mixing ratio of 100: 3.5 to 12 by weight of a mixture ratio of an aggregate for a permeable packing layer and a one-pack type biobinder in a weight ratio of 3 to 9 mm, (S5). ≪ RTI ID = 0.0 > 11. < / RTI > The method according to claim 1,
Wherein the drainage layer constructing step (S2) is provided with a joint to prevent cracking of the bezel layer due to shrinkage and expansion in the drainage layer curing step (S3). The method according to claim 1,
The water-permeable packaging layer construction step (S5) is a step of reducing the viscosity of the one-pack type bio binder made of a mixture of polyol and isocyanate to facilitate horizontal work and preheating the surface of the roller or the like to 40 to 80 degrees Method of constructing permeable packaging material using one - component binder. The method according to claim 1,
In the step of constructing the permeable packaging layer (S5), a masonry joint is further provided to suppress cracks and cracks that may occur due to contraction and expansion of the permeable packaging layer material and the drainage layer installed by compaction. A method of constructing a permeable packaging material using a binder. The method according to claim 1,
(S6) applying a protective material made of a low viscosity silicone urethane system or an acrylic urethane system composed of polyol, isocyanate and silicone to the surface of the permeable packing material layer formed by the step of constructing the permeable packing layer (S5) Wherein the method further comprises the step of applying the one-pack type binder. The method according to claim 1,
Wherein the permeable packing layer is made of fibrous material to improve bending strength and to prevent material separation depending on the weight of the aggregate as a potential thickener. A permeable pavement constructed by the method of any one of claims 1 to 6,
(A) After finishing the road surface of the ground layer (G), the ground layer (10) is applied after 5 to 25 mm of rubble is applied to a constant thickness;
(B) is laminated on the base layer and comprises 12 to 17% of cement, 0.3 to 0.5% of barium sulfate, 3.8 to 5.1% of blast furnace slag, 5 to 7% of silica sand, 0.07 to 0.15% of sodium gluconate, A porous concrete drainage layer 20 made by mixing 74% of crushed stone aggregate;
(C) a primer layer (30) composed of a one-component dispersed polyurethane primer which is applied on the upper part of the drainage layer and hardened at room temperature and does not generate pinholes even when contacted with water and does not swell;
(D) A one-part type bio binder in which a mixture of a mixture of a mixture of a bio polyol and a hard polyether polyol and a curing agent composed of an isocyanate compound in a weight ratio of 30 to 100: The permeable packing layer 40, which is mixed with the aggregate for the permeable pavement layer and the one-pack type bio binder at a mixing ratio of 100: 3.5 to 12 by weight, is placed on the surface of the primer layer,
Wherein the one-pack type binder is used in a pitcher package. 8. The method of claim 7,
Wherein the aggregate for the permeable packing layer is a mixed aggregate of at least one of a color aggregate, a natural volcanic stone, a ceramic crushed aggregate, and a brick crushed aggregate. 8. The method of claim 7,
A protective layer 50 is further formed on the surface of the permeable packing layer 40,
Wherein the protective layer (50) is made of low viscosity polyurethane composed of a polyol coated with a spray or a roller and isocyanate. 8. The method of claim 7,
Wherein the permeable packing layer (40) is further packed with natural or artificial aggregate filler aggregates having a size of 0.5 to 1.5 mm with respect to 100 parts by weight of the permeable packing layer aggregate material. 8. The method of claim 7,
Wherein the permeable packing layer is made of fibrous material to improve bending strength and to prevent material separation depending on the weight of the aggregate as a potential thickener.

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