KR102394669B1 - Compositions for permeable block and a constructing method of permeable block using this - Google Patents

Abstract

The present invention relates to a composition for a water permeable block and a construction method of a water permeable block using the same. The composition for a water permeable block includes aggregate including ferronickel slag whose particle diameters are 1 to 10mm; and a binder including a polyurethane resin. According to the present invention, excellent water permeability and durability can be ensured when the water permeable block is constructed by using the composition for a water permeable block.

Description

Composition for permeable block and construction method of permeable block using same

The present invention relates to a composition for a water-permeable block and a method for constructing a water-permeable block using the same, and more particularly, a composition for a water-permeable block capable of lowering manufacturing cost while having excellent water permeability and durability by using ferronickel slag as an aggregate, and the same It relates to the construction method of the used permeable block.

As the number of artificial pavements made of impervious layers increased with urbanization, the surface leakage of rainwater increased. In addition, as environmental and ecological problems such as the depletion of groundwater and the increase of the heat island phenomenon are emerging. A permeable block (permeable block) has been developed that can reduce rainwater (rainwater) to the ground to protect the ecosystem and prevent urban flooding caused by rainwater. For this purpose, the permeable block is mainly manufactured in a structure that can minimize the flow of rainwater into the rainwater pipe by penetrating it into the roadbed.

In the existing permeable block, coarse-grained aggregate, dolomite, crushed stone, or artificial granite of non-uniform particle size is used in the surface layer so that rainwater flowing or stagnating along the concrete surface can easily permeate underground. Such a water-permeable block has excellent water permeability at the beginning of construction, but as time passes, clogging by foreign substances occurs in the surface layer having porous pores.

Although the demand for the permeable block is rapidly increasing, various technologies have been proposed to solve the problem of improving the performance of the permeable block. Specifically, as in Prior Art 1 (Republic of Korea Patent No. 10-2273558) and Prior Art 2 (Republic of Korea Patent No. 10-1853693), permeable block-related technologies with excellent permeability are being developed.

However, in the related field, there is a demand for product development capable of maintaining durability while increasing water permeability and reducing manufacturing cost. In addition, since the construction time and replacement cost increase when a conventional impervious block is replaced with a permeable block, there is a limit to actively using the permeable block with improved performance for the constructed spur block.

On the other hand, various types of waste are generated in large amounts during steel production in the iron and steel industry, and these wastes contain recyclable resources such as iron, limestone, and carbon. Ferronickel slag is a waste generated in an amount of about 6 tons per ton of ferronickel, and it has been reported that about 2 million tons of ferronickel are generated annually in Korea. It has been reported that ferronickel slag has high wear resistance and strength, and is chemically stable, and that no harmful substances are detected because nickel contained in ferronickel slag is not eluted due to insolubility.

Accordingly, the present applicant has attempted to develop a permeable block capable of increasing both permeability and durability by recycling ferronickel slag as an aggregate.

Republic of Korea Patent Registration No. 10-2273558 Republic of Korea Patent No. 10-1853693

In order to solve the above problems, the present invention is to provide a composition for a water permeable block excellent in water permeability and durability, and a method for constructing a water permeable block using the same.

In addition, the present invention is to provide a composition for a water permeable block that is environmentally friendly and can increase energy efficiency by using waste materials such as ferronickel slag and crushed oyster shells, and a method for constructing a water permeable block using the same.

In addition, the present invention can reduce the manufacturing cost of the permeable block by using the waste materials such as ferronickel slag and crushed oyster shells.

In addition, the present invention can give a water-permeable function to the impervious block in the constructed state, so that it can be actively used in the existing walk-through block, and the composition for the water-permeable block that can reduce the replacement cost of the existing walk-through block and the water-permeable block using the same To provide a construction method.

In order to achieve the above object, one aspect of the present invention includes an aggregate including ferronickel slag having a particle diameter of 1 to 10 mm and a binder including a polyurethane resin, wherein the binder is 1 to 10 with respect to 90 parts by weight of the aggregate. It provides a composition for a water-permeable block, characterized in that it is composed of parts by weight.

In one embodiment of the present invention, the aggregate, characterized in that it further comprises any one or more of oyster shell crushed product and illite.

In one embodiment of the present invention, the binder is characterized in that it further comprises any one or more of an acrylic resin, an unsaturated polyester resin, a vinyl ester resin, and an epoxy resin.

In another aspect of the present invention to achieve the above object, a plurality of through holes are provided, and the first step of forming a polyhedral impermeable unit composed of a composition for an impermeable block, the composition for a water permeable block of claim 1 is passed through the It provides a method for constructing a water-permeable block, comprising: a second step of forming a water permeable unit by injecting and pressurizing the hole; and a third step of applying a filling material to a space between the through-hole and the water permeable unit.

In an embodiment of the present invention, after performing the first step, styrene butadiene rubber latex (SBR Latex) is applied to the inner wall surface of the through hole.

Another aspect of the present invention to achieve the above object is the first step of forming a polyhedral impermeable unit having a plurality of through-holes and composed of a composition for an impervious block, the composition for a water-permeable block of claim 1 above It provides a method of constructing a water-permeable block comprising the second step of forming a water permeable unit by injecting and pressurizing it into the through-hole, and a third step of applying a filling material to the space between the through-hole and the water-permeable unit. .

The composition for a water-permeable block of the present invention can implement excellent water permeability and durability when manufactured as a water-permeable block.

In addition, the composition for a water permeable block of the present invention can provide an environment-friendly and water permeable block with improved resource circulation efficiency by recycling waste materials such as ferronickel slag and crushed oyster shells.

In addition, the composition for the water permeable block of the present invention can reduce the manufacturing cost of the water permeable block by using the waste materials such as ferronickel slag and crushed oyster shells.

In addition, the method of constructing a water permeable block using the composition for a water permeable block of the present invention can give a water permeability function to an impermeable block in an existing construction state, so that it can be actively utilized in an existing walkway block.

Therefore, the construction method of the water permeable block using the composition for the water permeable block of the present invention can reduce the replacement cost of the existing sub-road block.

However, the effects of the invention are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the following description.

1 is an image showing a water permeable block manufactured using a composition for a water permeable block according to an embodiment of the present invention.
Figure 2 is a flow chart showing the construction method of the permeable block according to an embodiment of the present invention.
3 is a perspective view of an impervious unit according to an embodiment of the present invention;
Figure 4 is an image showing a state in which water is permeable when water is added to the permeable unit of the permeable block of Example 10 of the present invention.

Hereinafter, the composition for a water permeable block according to the present invention and a construction method using the same will be described in detail with reference to preferred embodiments and drawings.

Composition for permeable block

The composition for a water-permeable block of the present invention is a composition for manufacturing and constructing a water-permeable block, and may be a mixture of aggregate and binder. According to an embodiment, a water permeable block in which the entire block is made of a composition for a water permeable block by using the composition for a water permeable block, or a permeable unit that is accommodated on one side of an impermeable block to give a water permeable block function (or a pitcher) It can be manufactured and constructed in the form of block units).

Specifically, the composition for a water permeable block of the present invention may include an aggregate including ferronickel slag having a particle diameter of 1 to 10 mm and a binder including a polyurethane resin. That is, the composition for the water permeable block may be formed by mixing ferronickel slag and polyurethane resin.

The ferronickel slag is obtained after nickel (Ni) ore and bituminous coal used as raw materials for producing ferronickel are melted at high temperature and separated from ferronickel, and contains a large amount of silicon (Si) and magnesium (Mg) components. are doing In one embodiment, the ferronickel slag may be used that is supplied from a steel manufacturer producing ferronickel. In general, ferronickel slag may be formed to have a gravel type, a sand type, or various particle sizes according to a cooling method of the molten slag. Preferably, in the present invention, ferronickel slag having a particle diameter of 1 to 10 mm may be used as an aggregate in order to form pores suitable for permeability.

In an embodiment of the present invention, the ferronickel slag particle diameter may be 1 to 10mm. In one embodiment, when the particle diameter of the ferronickel slag is smaller than 1 mm, the ferronickel slag of small particles fills the void between the aggregate and the binder, so that the permeability efficiency of the permeable block to which the composition for the permeable block is applied may be reduced. there is. In addition, when the diameter of the ferronickel slag particles is greater than 10mm, the strength may be lowered and the compatibility between the aggregate and the binder may be lowered, which may affect the quality of the water permeable block to which it is applied.

The ferronickel slag has a characteristic of exhibiting high chemical stability, so that it is not affected by aging or corrosion even when disposed to be exposed to a specific place for a long period of time when manufactured as a water-permeable block, thereby providing a product with improved quality. In addition, the composition for a water permeable block of the present invention can lower the manufacturing cost and increase the resource circulation efficiency by recycling ferronickel slag, which is a waste.

The polyurethane resin is formed by the reaction of a polyol and an isocyanate compound, and a commercially available product may be used. Specifically, for example, the polyol is polypropylene glycol, polyethylene glycol, polytetramethylene ether glycol, and biomass-derived poly 1,3-propanediol (1,3- propanediol), one or more polyether-based polyols, or polyester-based polyols obtained by condensation polymerization of glycol and saturated dibasic acid may be used.

In addition, specifically, for example, the isocyanate compound may be an aliphatic diisocyanate, and more specifically, methylene diphenyl diisocyanate, an isocyanate in the form of a prepolymer thereof, toluene diisocyanate, As the alicyclic isocyanate, any one or more of pentamethylene diisocyanate, hexamethylene diisocyanate, and isophorone diisocyanate may be used.

In one embodiment of the present invention, the composition for the water permeable block may be composed of 1 to 10 parts by weight of the binder with respect to 90 parts by weight of the aggregate. That is, as the composition for a water permeable block of the present invention is composed of the ferronickel slag and the polyurethane resin mixed in an optimal ratio, it is possible to improve both the water permeability and durability of the water permeable block manufactured/constructed by applying it. More preferably, the composition for the water permeable block may be composed of 6 to 10 parts by weight of the binder based on 90 parts by weight of the aggregate.

In one embodiment, when the binder is composed of less than 1 part by weight with respect to 90 parts by weight of the aggregate, the content of the binder for binding the aggregate is too small, the bonding strength of the water permeable block to which it is applied may be reduced, and the molding of the composition Construction may not be smooth due to low performance. In addition, when the binder is composed of more than 10 parts by weight with respect to 90 parts by weight of the aggregate, as the binder partially fills the voids between the aggregates, the water permeability may be affected, and the manufacturing cost may increase.

In one embodiment of the present invention, as an aggregate of the composition for water permeable blocks, it may further include any one or more of crushed oyster shells and illite. That is, it may function as an aggregate by mixing any one or more aggregates of the crushed oyster shells and the illite with the ferronickel slag. The oyster shell pulverized product and the illite may be additionally included to give the composition for a water permeable block of the present invention a function of purifying rainwater.

The pulverized oyster shells are pre-treated and pulverized oyster shells, and may be processed and used through various processes according to embodiments. In one embodiment, in order to form the crushed oyster shells, the oyster shells prepared first may be washed and dried. Thereafter, the dried oyster shells may be pulverized to have a certain particle size and used. The pulverized oyster shells pulverized without firing may be composed mainly of calcium carbonate (CaCO ₃ ). Since the crushed oyster shells have a porous structure, rainwater may be naturally purified while flowing through the pores inside the crushed oyster shells.

In one embodiment of the present invention, the dried oyster shells may be pulverized to a size of 4 to 10 mm. When the pulverized particle size of the oyster shell is less than 4 mm, the particle size is too small, and the excellent function of the crushed oyster shell may be deteriorated, and dust may be generated during the manufacturing process. In addition, when the particle size of the oyster shells pulverized exceeds 10 mm, mixing with the binder is not easily made, which may affect the physical properties of the water permeable block to which the oyster shell is applied.

The illite is known as a kind of clay mineral as a product of chemical weathering of silicate minerals. The main component is composed of SiO ₂ and Al ₂ O ₃ and muscovite, and may have a porous structure. In addition, the illite can effectively purify rainwater through its inherent antibacterial action, heavy metal adsorption action and deodorization action.

In one embodiment of the present invention, any one or more selected from the crushed oyster shells and the illite may be comprised in a ratio of 20 to 30 parts by weight based on 60 parts by weight of the ferronickel slag.

When the amount of any one or more selected from the crushed oyster shells and the illite is less than 20 parts by weight with respect to 60 parts by weight of the ferronickel slag, it may be difficult to effectively provide an excellent purification function using the crushed oyster shells and the illite. there is. In addition, when the composition of at least one selected from the crushed oyster shells and the illite with respect to 60 parts by weight of the ferronickel slag exceeds 30 parts by weight, the strength may decrease and the manufacturing cost may increase.

In one embodiment of the present invention, the present invention may further include a thermosetting organic binder (or organic thermosetting binder) as a binder together with the polyurethane resin. The thermosetting binder may be mixed with the polyurethane resin as a binder to improve bonding strength between the polyurethane resin and aggregates such as ferronickel slag.

Specifically, the thermosetting organic binder is a liquid oligomer intermediate obtained by polymerizing monomers derived from petrochemical or biomass by itself or copolymerizing various monomers with thermal energy, an initiator It is a kind of polymer compound having a solid network molecular structure by curing at room temperature or higher than room temperature by using an accelerator or the like.

The thermosetting organic binder forms a cured product having a molecular weight reaching infinity after curing due to these characteristics, and has excellent heat resistance because it does not melt again at high temperature and does not weaken its physical properties at low temperature. In addition, the thermosetting organic binder has characteristics such as excellent chemical resistance, weather resistance, durability, glossiness, electrical insulation, excellent adhesion to an adherend, wettability, and low thermal conductivity depending on the type.

Specifically, in one embodiment of the present invention, the binder of the composition for the water permeable block may include any one or more of an acrylic resin, an unsaturated polyester resin, a vinyl ester resin, and an epoxy resin. That is, the acrylic resin, the unsaturated polyester resin, the vinyl ester resin, and any one or more binders of the epoxy resin may be mixed with the polyurethane resin to function as a binder.

The specific type of the acrylic resin is not particularly limited, but examples thereof include methyl (meth) acrylate, ethyl (meth) acrylate, butyl (meth) acrylate, 2-ethylhexyl (meth) acrylic having one unsaturated group. Ethylene glycol di (meth) acrylate, diethylene glycol di (meth) having at least one monomer and two or more unsaturated groups from the group consisting of late, benzyl (meth) acrylate and glycidyl (meth) acrylate Acrylate, 1,4-butadiol di(meth)acrylate, 1,6-hexanediol di(meth)acrylate, propylene glycol di(meth)acrylate, dipropylene glycol di(meth)acrylate and trimethylolpropane A high molecular polymer consisting of a combination of at least one or more monomers from the group consisting of tri (meth)acrylate and at least one or more non-acrylate monomers from the group consisting of styrene, acrylonitrile, vinyl acetate and vinyltoluene may be doing

The type of the unsaturated polyester resin is also not particularly limited, but for example, the unsaturated polyester resin is produced through a condensation reaction of α,β-unsaturated dibasic acid or a mixture of saturated dibasic acid and polyhydric alcohol, and has an acid value of 1 to 70, and a polyester resin having a molecular weight of 1,000 to 20,000 may be used.

At this time, the method for producing the polyester resin is not particularly limited, but, for example, the dibasic acid is mixed with a polyhydric alcohol in an appropriate ratio (for example, the number of moles of alcoholic hydroxyl groups / number of moles of carboxyl groups = 0.8 to 1.4) After mixing, a suitable temperature (for example, 120 to 250° C.) is prepared for a condensation reaction under an inert gas (for example, carbon dioxide gas and/or nitrogen gas stream), and the generated water is removed according to the degree of reaction progress. It may be prepared by a method of gradually increasing the temperature. As the reaction proceeds by increasing the temperature, an alkyd-type resinous material having a target molecular weight and molecular weight distribution is obtained. By diluting the alkyd-type resinous material with an appropriate diluent or reactive diluent, an unsaturated polyester resin of desired viscosity can be obtained. there is.

In one embodiment, the aforementioned α,β-unsaturated dibasic acid or saturated dibasic acid is maleic anhydride, citraconic acid, fumaric acid, itaconic acid, phthalic acid ( phthalic acid, phthalic anhydride, isophthalic acid, terephthalic acid, succinic acid, adipic acid, sebacic acid, and tetrahydrophthalic acid anhydride) may be used.

In one embodiment, the polyhydric alcohol is ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol (tripropylene glycol), polypropylene glycol (polypropylene glycol), 1,4-butylene glycol (1,4-butylene glycol), hydrogenated bisphenol A (hydrogenated bisphenol A), trimethylolpropane mono-allyl ether ), neopentylene glycol, 2,2,4-trimethyl-1,3-pentanediol (2,2,4-trimethyl-1,3-pentanediol), and any one or more of glycerine may be doing

The vinyl ester resin is an addition polymer of an epoxy resin and acrylic acid and methacrylic acid containing an unsaturated group, also called epoxy (meth)acrylate. In the case of the vinyl ester resin, the type is not particularly limited, but for example, bisphenol A-based vinyl ester resin, bisphenol F-based vinyl ester resin, bisphenol S-based vinyl ester resin, and no-block-based vinyl ester resin using no-block phenol epoxy as a raw material. , it may be to use one or more of a brominated bisphenol-based vinyl ester resin using a brominated epoxy to impart flame retardancy, a urethane-modified vinyl ester resin modified with urethane, and a rubber-modified vinyl ester resin modified with a rubber component.

The epoxy resin is also not particularly limited, and for example, a bifunctional or polyfunctional epoxy resin may be used. Specifically, examples of the epoxy resin may be any one or more selected from bisphenol A type epoxy resin, bisphenol S type epoxy resin, tetraphenyl ethane epoxy resin, and phenol novolak type epoxy resin. It may be used to form a thermosetting resin by reacting with any one or more curing agents among anhydride-based, amine-based and amide-based curing agents.

In one embodiment of the present invention, any one or more of the acrylic resin, the unsaturated polyester resin, the vinyl ester resin and the epoxy resin is included in a ratio of 2 to 5 parts by weight with respect to 8 parts by weight of the polyurethane resin. it could be

When composing less than 2 parts by weight of any one or more of the acrylic resin, the unsaturated polyester resin, the vinyl ester resin, and the epoxy resin with respect to 8 parts by weight of the polyurethane resin, the bonding strength by the above-mentioned resin is improved. It can be difficult to implement. In addition, when any one or more of the acrylic resin, the unsaturated polyester resin, the vinyl ester resin, and the epoxy resin is comprised in excess of 5 parts by weight with respect to 8 parts by weight of the polyurethane resin, the aggregate and the polyurethane resin are compatibility may be lowered, which may affect the physical properties of the permeable block to which it is applied.

1 is an image showing a water permeable block manufactured using a composition for a water permeable block according to an embodiment of the present invention.

Referring to FIG. 1 , it is a water-permeable block manufactured by molding a composition for a water-permeable block composed of ferronickel slag and polyurethane in a cylindrical shape. It can be seen that the ferronickel slag particles having a size are firmly bonded.

As described above, the composition for a water-permeable block of the present invention can be manufactured as a water-permeable block to realize excellent water permeability and durability. In addition, by recycling waste materials such as ferronickel slag and crushed oyster shells, it is possible to increase the resource circulation efficiency as an eco-friendly permeable block and lower the manufacturing cost.

Construction method using composition for water permeable block

Another aspect of the present invention provides a method for constructing a water-permeable block using a composition for a water-permeable block. That is, it may be to provide a method of manufacturing and constructing a water permeable block on an actual sidewalk and driveway using the above-described "composition for water permeable block".

Figure 2 is a flow chart showing the construction method of the permeable block according to an embodiment of the present invention.

Referring to Figure 2, the construction method of the water permeable block using the composition for the water permeable block is provided with a plurality of through holes, the first step of forming a polyhedral impermeable unit composed of the composition for impermeable blocks (S10), A second step (S20) of injecting the composition for a water permeable block of claim 1 into the through hole and pressurizing it to form a water permeable unit (S20) and a third step of applying a filling material to the space between the through hole and the water permeable unit (S30) ) may be included.

That is, the construction method of the water-permeable block of the present invention may be to provide a method for manufacturing a hybrid water-permeable block combined with an impermeable unit composed of a composition for an impermeable block and a method for constructing such a hybrid water-permeable block. To this end, the construction method of the water permeable block of the present invention may be to configure the permeable unit composed of the composition for the permeable block described above on one side of the impermeable unit after forming the impermeable unit.

Through this, the permeable block manufactured and constructed maintains the performance of the impervious unit with high strength, and the performance of the permeable unit with water permeability and durability is added to satisfy the physical properties required as a spur block and effectively produce the improved quality permeable block. can be constructed.

Referring to FIG. 2 , the S10 may be provided with a plurality of through-holes and form a polyhedral impermeable unit composed of a composition for impervious blocks. That is, in S10, the process of forming a general impermeable block may be performed using a conventional method. Specifically, for example, the water impermeable unit may be manufactured by putting a composition for an impervious block in a polyhedral frame and taking it out by pressing. As the composition for the impermeable block, a composition used in the manufacture of a conventional water impermeable block may be used.

In one embodiment of the present invention, the impermeable unit may be formed of a composition for impermeable blocks including waste resources. Specifically, for example, the composition for the impermeable block may include any one recycled composition of oyster shell powder, ferronickel slag, blast furnace slag and waste paper slurry, cement, and water.

Then, in S10, a plurality of through-holes may be formed in the polyhedral impermeable unit. The through hole formed in the impermeable unit may be an area for constructing a water permeable unit to be described later.

The shape of the through hole may be formed in various ways according to embodiments. Specifically, for example, the through hole may have a cylindrical shape, a polyhedral shape, a pyramidal shape, or a spherical shape, but is not limited thereto.

3 is a perspective view of an impervious unit according to an embodiment of the present invention. Referring to FIG. 3 , a plurality of through holes 2 are formed in the impermeable unit 1 . The plurality of through-holes 2 are disposed to be spaced apart from each other, and a water permeable unit may be constructed in the through-holes 2 in a process to be described later.

In an embodiment of the present invention, the first step ( S10 ) may be to form a polyhedral impermeable unit in which a plurality of through-holes are perforated to be spaced apart from each other. The plurality of through-holes may be an area in which the water permeable unit is constructed, that is, the plurality of water permeable units to be constructed as the through holes are drilled apart from each other may be spaced apart from each other. Accordingly, as the water impermeable unit is disposed between the plurality of water permeable units, the impermeable unit functions as a support frame in which the water permeable unit can be easily injected into the through hole and coupled during construction of the water permeable unit to be described later. there is.

The separation distance between the plurality of through-holes and the number of through-holes formed in one block may be formed by appropriately adjusting the permeability block according to the construction site and the target amount of permeability.

In another embodiment, the impermeable unit may refer to an impervious block that has already been constructed on a sidewalk or roadway. That is, the impermeable unit may be formed by forming a plurality of through holes in the previously constructed polyhedral impermeable block. Through this, while utilizing the impervious block that has been constructed as it is, it is possible to provide a water permeability function to a part of the impervious block by arranging the permeable unit in the impervious block. Accordingly, the construction method of the water permeable block using the composition for the water permeable block of the present invention can be actively utilized in the existing coveted block, and it is possible to reduce the replacement cost of the existing coveted block.

In one embodiment of the present invention, after performing the first step, styrene butadiene rubber latex (SBR Latex) may be applied to the inner wall surface of the through hole. After forming the impermeable unit having a plurality of through-holes in the first step, by applying a bonding agent to the inner wall surfaces of the plurality of through-holes, the bonding force between the impermeable unit and the water-permeable unit to be described later can be increased. there is. More specifically, in one embodiment of the present invention, after performing the first step, the process of applying styrene butadiene rubber latex (SBR Latex) to the inner wall surface of the through hole is a spray method. It may be performed using . By spraying an appropriate amount of styrene butadiene rubber latex (SBR Latex) on the inner wall surface of the through hole and applying it evenly, the bonding efficiency between the impermeable unit and the water permeable unit can be improved.

Referring to FIG. 2 , in step S20, the permeable block composition of claim 1 may be injected into the through hole and pressurized to form a water permeable unit. That is, it may be to put the "composition for a permeable block composed of the above-described ferronickel slag aggregate and polyurethane binder, etc." into the through hole formed in the water impermeable unit and compact the surface while pressing. As the composition for blocks is cured, it may be combined with the inner wall of the through-hole composed of the water-impermeable composition to form one water-permeable block in which the water-impermeable unit and the water-permeable unit are combined.

The process of putting the composition for a water permeable block in the through hole and compacting it by pressing may be performed using a conventional method and apparatus for in-situ casting of the composition for a sidewalk block.

Referring to FIG. 2 , in step S30, a filling material may be applied to a space between the through hole and the water permeable unit. In S20, as the water permeable unit is formed in the through hole, the inner wall of the through hole and the water permeable unit are combined, but since a fine space may exist between the through hole and the water permeable unit, a filling material is applied to the pitcher The block may be configured to have a flat surface without curvature.

In one embodiment, the filling material may generally be sand used as a filling material after construction of the block diagram, but the present invention is not limited thereto.

As described above, in the method for constructing a water-permeable block using the composition for a water-permeable block of the present invention, a through-hole is formed in the water-impermeable unit, and the water-permeable unit is injected into the formed through-hole and cured to act as a support. can increase the bonding strength. In addition, as it is formed in a plurality of individually spaced through holes, the area to be hardened is divided into unit areas, so that the curing speed is fast, and the construction period can be shortened. In addition, it can be used as an impermeable unit by forming a through hole in the existing impermeable block, thereby reducing the cost for replacing the impermeable block.

Hereinafter, the experimental contents of the composition for the water permeable block and the construction method of the water permeable block using the same will be described in detail.

Experimental Example 1: Analysis of changes in physical properties of the composition for permeable blocks according to the mixing ratio of aggregate and binder

In the following experiment, in the composition for a water permeable block of the present invention, the mixing ratio of aggregate and binder was changed as in the following example, and a water permeable block was manufactured using this, and the flexural strength, compressive strength and permeability coefficient of the water permeable block was measured.

To prepare a water impermeable unit, 30 parts by weight of oyster shell powder, 30 parts by weight of ferronickel slag, 10 parts by weight of blast furnace slag, 10 parts by weight of waste paper slurry and 15 parts by weight of Portland cement were prepared with respect to 10 parts by weight of water. Water, oyster shell powder, ferronickel slag, blast furnace slag, and Portland cement were mixed to form a composition for an impervious block, and then the composition was put into a sidewalk block molding mold and cured to prepare an impervious block. Thereafter, two cylindrical through-holes having a diameter of 6 cm were drilled to have a spacing of 5 cm in the impermeable block to manufacture an impervious unit. All of the manufactured impermeable units were used in Examples.

The flexural strength of the water permeable block was measured in accordance with KS F 4419:2001.

The compressive strength of the water permeable block was measured in accordance with KS F2401.

The permeability coefficient of the permeable block was tested by the following formula based on the hydrostatic permeability test.

Kp = {LХa/A(t ₂ -t ₁ )}Хlog(h ₁ /h ₂ )

where Kp: permeability coefficient (cm/sec), L: height of clay floor bricks, a: cross-sectional area of container, t ₂ - t ₁ : permeation time, A: permeable area, h ₁ : water level at the start of test, h ₂ : test water level at the end

[Example 1]

5 kg of ferronickel slag having a particle diameter of 1 to 10 mm and 2 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 2]

5 kg of ferronickel slag having a particle diameter of 1 to 10 mm and 4 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 3]

5 kg of ferronickel slag having a particle diameter of 1 to 10 mm and 6 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 4]

5 kg of ferronickel slag having a particle diameter of 1 to 10 mm and 8 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 5]

5 kg of ferronickel slag having a particle diameter of 1 to 10 mm and 10 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 6]

5 kg of ferronickel slag having a particle diameter of 1 to 10 mm and 12 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 7]

5 kg of ferronickel slag having a particle diameter of 1 to 10 mm and 14 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

Table 1 below summarizes the mixing ratios of aggregates and binders constituting the composition for water permeable blocks prepared in Examples 1 to 7 above.

division
(unit) ferronickel slag
(parts by weight) polyurethane resin
(parts by weight) Example 1 90 One Example 2 90 4 Example 3 90 6 Example 4 90 8 Example 5 90 10 Example 6 90 12 Example 7 90 14

The measurement results of the flexural strength, compressive strength, and permeability coefficient of the permeable blocks prepared in Examples 1 to 7 are shown in Table 2 below.

division
(unit) flexural strength
(MPa) compressive strength
(MPa) pitcher coefficient
(mm/sec) Example 1 4.6 19.1 0.20 Example 2 4.8 19.3 0.18 Example 3 5.3 20.4 0.16 Example 4 5.5 20.8 0.15 Example 5 5.7 20.9 0.12 Example 6 5.8 21.1 0.08 Example 7 5.9 21.2 0.06

Table 3 below is a block quality standard table used in sidewalk pavement construction (source: Seoul Infrastructure Corporation sidewalk construction design and construction manual).

block type purpose Flexural strength (MPa) Compressive strength (MPa) pitcher coefficient general block
(impervious block) sidewalk 5 or more 20 or more _ driveway own pitching block sidewalk 4 or more 16 or more 0.1 or more driveway 5 or more 20 or more

Referring to Tables 2 to 3, it can be confirmed that the flexural strength, compressive strength, and permeability coefficient of Examples 3 to 5 have qualities applicable to both the sidewalk block and the road block.

In Examples 1 and 2, as the content of ferronickel slag was relatively increased, the permeability coefficient was high, but as the binder was added in a small amount, the bonding strength was weakened, so it can be seen that the flexural strength and compressive strength of the ferronickel slag were lowered.

In Examples 6 and 7, as the amount of binder added increased, the flexural strength and compressive strength were increased to show more than the quality standard, but it can be seen that the permeability coefficient was lower than the quality standard. This can be seen that the binding force was increased as the amount of the binder was increased, but the permeability coefficient was decreased as the voids were reduced.

Experimental Example 2: Analysis of changes in physical properties of the composition for permeable blocks according to the particle diameter of ferronickel slag

In the following experiment, in the composition for a water permeable block of the present invention, the particle diameter of ferronickel slag used as an aggregate was changed as in the following example, and a water permeable block was manufactured using this, and the flexural strength and compressive strength of the water permeable block And the permeability coefficient was measured.

To prepare a water impermeable unit, 30 parts by weight of oyster shell powder, 30 parts by weight of ferronickel slag, 10 parts by weight of blast furnace slag, 10 parts by weight of waste paper slurry and 15 parts by weight of Portland cement were prepared with respect to 10 parts by weight of water. Water, oyster shell powder, ferronickel slag, blast furnace slag and Portland cement were mixed to form a composition for an impervious block, and then it was put into a sidewalk block molding mold and cured to prepare an impervious block. Thereafter, the impermeable unit was manufactured by drilling two cylindrical through-holes having a diameter of 6 cm in the impermeable block to have a spacing of 5 cm. All of the manufactured impermeable units were used in Examples.

The flexural strength of the water permeable block was measured in accordance with KS F 4419:2001.

The compressive strength of the permeable block was measured in accordance with KS F2401.

The permeability coefficient of the permeable block was tested by the following formula based on the hydrostatic permeability test.

Kp = {LХa/A(t ₂ -t ₁ )}Хlog(h ₁ /h ₂ )

where Kp: permeability coefficient (cm/sec), L: height of clay floor bricks, a: cross-sectional area of container, t ₂ - t ₁ : permeation time, A: permeable area, h ₁ : water level at the start of test, h ₂ : test water level at the end

[Example 8]

5 kg of ferronickel slag having a particle diameter of 0.1 to 1 mm and 2 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 9]

5 kg of ferronickel slag having a particle diameter of 1 to 5 mm and 2 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 10]

5 kg of ferronickel slag having a particle diameter of 6 to 10 mm and 2 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 11]

5 kg of ferronickel slag having a particle diameter of 11 to 15 mm and 2 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

[Example 12]

5 kg of ferronickel slag having a particle diameter of 16 to 20 mm and 2 parts by weight of a polyurethane resin were prepared with respect to 90 parts by weight of the ferronickel slag. The ferronickel slag and the polyurethane resin were mixed to form a composition for a water permeable block.

The composition for the water permeable block was injected into each of the two through holes of the water impermeable unit, pressurized, and cured to prepare a water permeable block.

Table 4 below summarizes the mixing ratios of aggregates and binders constituting the composition for water permeable blocks prepared in Examples 8 to 12.

division
(unit) ferronickel slag particle size
(mm) Example 8 0.1 to 1 Example 9 1 to 5 Example 10 6 to 10 Example 11 11 to 15 Example 12 15 to 20

The measurement results of the flexural strength, compressive strength, and permeability coefficient of the permeable blocks prepared in Examples 8 to 12 are shown in Table 5 below.

division
(unit) flexural strength
(MPa) compressive strength
(MPa) pitcher coefficient
(mm/sec) Example 8 5.8 21.0 0.06 Example 9 5.6 20.9 0.12 Example 10 5.5 20.8 0.15 Example 11 4.5 19.7 0.16 Example 12 3.8 18.5 0.18

Referring to Tables 3 and 5, it can be seen that the flexural strength, compressive strength, and permeability coefficient of Examples 9 and 10 represent qualities applicable to both the sidewalk block and the driveway block. Among them, the physical properties of the water permeable block of Example 10 were the most excellent.

4 is an image showing a state in which water permeates when water is added to the permeable unit to which the composition for the permeable block of the permeable block of Example 10 of the present invention is applied. 4, when water is poured into the water permeable unit composed of the composition for the water permeable block prepared in Example 10, the water permeates almost immediately and the water falls to the lower part of the water permeable unit, so the water permeability of the water permeable block prepared in Example 10 It can be seen that this is very good.

The water permeable block of Example 8 has adequate flexural strength and compressive strength, but it can be confirmed that the permeability coefficient is below the quality standard and is not suitable as a water permeable block. This can be seen as a result of a large decrease in the permeability coefficient as the voids between the ferronickel slag particles are filled as the small particle size ferronickel slag is used as an aggregate.

In Examples 11 to 12, as the particle size of the ferronickel slag increased, the voids increased and the permeability coefficient was increased, but the flexural strength and compressive strength were less than the quality standards, indicating that it is not suitable for application as a water permeable block.

As such, those skilled in the art to which the present invention pertains will understand that the above-described technical configuration of the present invention may be implemented in other specific forms without changing the technical spirit or essential features of the present invention.

Therefore, the embodiments described above are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the above detailed description, the meaning and scope of the claims, and All changes or modifications derived from the concept of equivalents should be construed as being included in the scope of the present invention.

1: impervious unit
2: Through hole

Claims (6)

Aggregate comprising ferronickel slag having a particle diameter of 1 to 10 mm; and
A binder comprising a polyurethane resin; includes,
The composition for a water-permeable block, characterized in that the binder is comprised of 6 to 10 parts by weight based on 90 parts by weight of the aggregate. According to claim 1,
The aggregate is
A composition for a water-permeable block, characterized in that it further comprises any one or more of crushed oyster shells and illite. The method of claim 1,
The binder is
A composition for a water-permeable block, characterized in that it further comprises any one or more of an acrylic resin, an unsaturated polyester resin, a vinyl ester resin, and an epoxy resin. A first step of forming a polyhedral impermeable unit having a plurality of through-holes;
a second step of injecting the composition for a water permeable block of claim 1 into the through hole and pressurizing it to form a water permeable unit; and
A method of constructing a water-permeable block comprising a third step of applying a filling material to a space between the through-hole and the water-permeable unit. 5. The method of claim 4,
After performing the first step,
A construction method of a water permeable block, characterized in that by applying styrene butadiene rubber latex (SBR Latex) to the inner wall surface of the through hole. a first step of forming a polyhedral impermeable unit in which a plurality of through-holes are perforated to be spaced apart from each other;
a second step of injecting the composition for a water permeable block of claim 1 into the through hole and pressurizing it to form a water permeable unit; and
A method of constructing a water-permeable block comprising a third step of applying a filling material to a space between the through-hole and the water-permeable unit.

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