KR100880886B1 - Bench block and method of manufacturing the bench block - Google Patents

Abstract

A bench block and the manufacturing method thereof are provided to increase durability including compressive strength, water permeability, etc. and to be beneficial to the human body by having low pH and not discharging hexavalent chromium. A bench block includes a body portion(3) and a finish portion(30) installed to the top of the body portion. The body portion is made of an admixture of 12-15 weight percent non-cement based 4 inorganic binders(Calcium Sulfur Aluminate, CSA), 9-12 weight ground granulated blast furnace slag powder, 8-12 weight percent waste concrete recycled aggregates, 57-60 weight percent crushed aggregates and 3-6 weight percent mixture and the surface of the body portion is coated with a sealer coating agent, and the finish portion is porous.

Description

Bench block and method of manufacturing the bench block

The present invention relates to a bench block having a function of a bench or bollard (boundary of a road or sidewalk or a traffic blocking pillar) applicable to a pavement surface in a public environment, and a method of manufacturing the same.

Conventional column type bench blocks have a rectangular or circular shape as a single cement block.

Such a bench block is weaker in permeability than other purpose blocks (eg, vegetation blocks), so that when the moisture is absorbed, the bench block may not be able to function as a bench due to its long moistness.

In addition, because bench blocks use cement, there is no air or water purification effect when the air or absorbed water is drained.

In addition, the pillar-type bench block is made of a single type of material, which does not give an aesthetic appearance in appearance, which is undesirable in terms of interior.

The present invention has been made to solve the above-described problems, and aims to improve the usability through rapid drainage, and to purify the air and water quality, as well as to improve the landscaping object of the bench block and its manufacturing method.

In addition, the present invention can improve the durability, such as compressive strength, water permeability, and has a low pH and does not elute hexavalent chromium, and aims at a bench block and a method of manufacturing the same that are beneficial to the human body.

In order to achieve the above object, the bench block of claim 1 of the present invention,

It includes a body portion, and a finish for closing the upper surface of the body portion, the finish is made of porous.

According to this configuration, it is possible to increase the usability through rapid drainage, to purify the air and the water quality, as well as to improve the landscaping.

Bench block according to claim 2 of the present invention,

The upper edge of the body portion is preferably formed with an inclined surface, the side of the body portion is preferably formed with a drain groove communicating with the inclined surface.

According to this configuration, it is possible to guide the drainage through the drain groove while further securing the rapidity of the drainage through the inclined surface.

Bench block according to claim 3 of the present invention,

It is preferable that the finishing part has a plate shape of any one of metal, glass and wood.

According to this configuration, the landscaping property can be enhanced by the dual assembly structure of stones and metals.

At this time, the body portion 12-15% by weight of non-cement inorganic binder (Calcium Sulfur Aluminate, CSA), blast furnace slag fine powder 9-12% by weight, waste concrete recycled aggregate (1-2.5 mm) 8-12% by weight, general aggregate ( Crushed aggregate) 57-60% by weight, cellulose-based admixture (thickener) 3-6% by weight, and functional stone aggregate (anionic stone, 1-2.5 mm) 16-19 parts by weight based on 100 parts by weight of this body part mixture And 4-6 parts by weight of water. In addition, the surface of the body portion is coated with a sealer coating agent.

In addition, the finish is 13-16% by weight of inorganic binder (CSA), 10-12% by weight of blast furnace slag, 26-29% by weight of crushed aggregate, 3.5-6% by weight of vermiculite and wood chips (1-2.5 mm) 37-41 It is made by adding any one selected from the group consisting of wt%, glass chips (1-2.5 mm) 37-41 wt%, natural stone chips (1-2.5 mm) 37-41 wt%, the finishing mixture 100 It may further include 8-21 parts by weight of functional aggregates (anionic stone, 1-2.5 mm) and 6-9 parts by weight of water, based on the weight parts.

In addition, the manufacturing method of the bench block includes a body and a finish installed on the upper surface of the body, inorganic binder (CSA) 12-15% by weight, blast furnace slag fine powder 9-12% by weight, waste concrete recycled aggregates (1- 2.5 mm) Functional aggregate (anion stone, 1-) with respect to 100 parts by weight of the body mixture consisting of 8-12% by weight, 57-60% by weight of general aggregate (crushed aggregate), 3-6% by weight of cellulose admixture (thickener) 2.5 mm) 16-19 parts by weight, inorganic pigments (pigments) 1-3 parts by weight in a mixing facility to make a homogeneous material, and then add 4-6 parts by weight of water to 100 parts by weight of the body mixture In the first step, the mixed material is put into a mold for molding the body portion, the second step for molding through vibration pressure at a temperature of 100-200 ℃, the third step of curing the molded body portion, air sprayed on the cured body portion The fourth step of the sealer coating to a thickness of 20-35 ㎛ using a manufactured body And a fifth step of installing a finishing part on the upper surface of the tube part.

In addition, the finish is 13-16% by weight of inorganic binder (CSA), 10-12% by weight of blast furnace slag, 26-29% by weight of crushed aggregate, 3.5-6% by weight of vermiculite and wood chips (1-2.5 mm) 37-41 Functionality with respect to 100 parts by weight of the finish mixture consisting of any one selected from the group consisting of% by weight, glass chips (1-2.5 mm) 37-41% by weight, natural stone chips (1-2.5 mm) 37-41% by weight The first step of mixing 8-21 parts by weight of aggregate (anion stone, 1-2.5 mm) into a mixing facility to dry it into a homogeneous material and then adding 6-9 parts by weight of water to 100 parts by weight of the finishing mixture. And a second step of molding the material through a vibrating pressure at a temperature of 100-200 ° C., followed by a third step of curing the molded body.

At this time, curing is a dry curing for 9-10 hours by heat dissipation of 40-50 ℃ after displaced in air for 2 hours at 20 ℃.

As is apparent from the above invention, the bench block of the present invention and the manufacturing method thereof have the following effects.

Permeability due to the porous structure using inorganic binder and blast furnace slag powder has been improved to improve its usability through rapid drainage when excellent. Also, the air purification and water purification effects by anion stones contained in the porous can be expected.

In addition, the bench block has a low pH and does not elute hexavalent chromium, which is beneficial to the human body.

In addition, it is possible to guide the drainage through the drain groove while securing the rapidity of drainage through the slope.

In addition, the bench block is not only a double assembly structure consisting of a finish using stones and metals (glass or wood) and a body coupled with the finish, but also prevents whitening of the surface due to dry curing and sealer coating. Can improve the landscaping.

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

1 and 2 are a perspective view of the separation and coupling of the bench block according to an embodiment of the present invention.

As shown in Figure 1 and 2, the bench block (1) consists of a body portion 3 forming an appearance, and the finishing portion 30 is installed on the upper surface of the body portion 3 to function as a bench and bollard Have

The trunk portion 3 is a quadrangular or circular shape in the form of a hollow or solid shape, and has a columnar shape at which a pedestrian can sit.

In addition, a seating groove 4 is formed in the center of the upper surface of the trunk portion 3 to which the finishing portion 30 is seated, and fastening grooves 9 are formed in the four corners of the seating groove 4.

In addition, the inclined surface 5 is formed at the upper edge of the body portion 3, so that the drainage performance is further increased by riding on the inclined surface 5 directly to the side without accumulating on the upper surface of the finish portion 30 during rainwater. Can be.

In addition, it is preferable that the drain groove 7 is formed in the longitudinal direction of the body portion 3 in the vertical direction.

The drain groove 7 may be configured as a straight line or a curve connecting the inclined surface 5 to the lower end of the trunk portion 3.

The lower end of the drain groove 7 is placed in or near the drainage channel so that water does not collect around the trunk portion 3.

Body part 3 excludes the use of conventional cement (Ordinary Portland Cement, OPC), 12-15% by weight of non-cement based inorganic binder (Calcium Sulfur Aluminate, CSA), 9-12% by weight of blast furnace slag powder, waste concrete recycling Aggregate (1-2.5 mm) 8-12% by weight, general aggregate (crushed aggregate) 57-60% by weight, admixture (thickener) 3-6% by weight, functional aggregate ( Anionic stone, 1-2.5 mm) 16-19 parts by weight, inorganic pigments (pigment) 1-3 parts by weight, water may further include 4-6 parts by weight. In addition, the surface of the body portion 3 is coated with a sealer coating (sealer coating) to a thickness of 20-35 ㎛ using an air spray. The surface layer is reduced in the amount of whitening generated by the sealer coating to improve the landscaping, and the surface layer is protected.

Body portion 3 of the present invention made of such a composition can prevent the pH reduction, hexavalent chromium elution compared to the existing cement-based products, it can prevent the whitening phenomenon by using a coating agent.

In addition, it is desirable to improve the antibacterial properties of the seating surface of the bench block by using a functional aggregate that emits a large amount of anion stones.

As such, the structure of the trunk portion 3 improves the water permeability due to the porous structure, and improves its usability through rapid drainage when excellent. Also, the air purification and water purification effect by the anion stone contained in the porous can be expected. .

Finishing portion 30 is installed on the upper surface of the body portion 3, it is preferable to fasten and secure with a screw (not shown).

The finish portion 30 is composed of an upper plate 31, a corner portion 33 formed at the bottom edge of the upper plate 31, and a fastening hole 35 formed at the corner of the corner portion 33.

Therefore, when the bottom surface of each part 33 is seated on the upper surface of the seating groove 4, the fastening hole 35 is aligned with the fastening groove (9) and may be fastened.

By such a configuration, it is preferable that the upper surface of the upper plate 31 of the finishing portion 30 is located at the same level as the uppermost surface of the inclined surface 5 to facilitate sitting.

At this time, the finishing portion 30 is 13-16% by weight of inorganic binder (CSA), blast furnace slag fine powder 10-12% by weight, crushed aggregate 26-29% by weight, vermiculite 3.5-6% by weight and wood chips (1-2.5 mm) ) 37-41% by weight, glass chips (1-2.5 mm) 37-41% by weight, natural stone chips (1-2.5 mm) consisting of any one selected from the group consisting of 37-41% by weight, the finish thus made It may further comprise 8-21 parts by weight of functional aggregate (anionic stone, 1-2.5 mm), 6-9 parts by weight of water, based on 100 parts by weight of the side mixture. The finishing portion 30 is to be contained in a large amount of anionic stone as a seating surface, and can be assembled with the body portion 3 by manufacturing a porous block using wood chips, glass chips, natural stone chips and the like. In addition, in order to enhance the landscaping of the finish portion 30, it is also preferable to have a double assembly structure composed of a plate material such as metal, glass, wood.

The inorganic binder (CSA) used in the body part 3 and the finishing part 30 is prepared by pulverizing a calcined compound (Calcium Sulfur Aluminate) mainly composed of lime, gypsum, and bauxite. CSA can manufacture high strength porous concrete by securing the point that strength is lower than existing cement when used for manufacturing porous concrete, and reduces hexavalent chromium detection.

Inorganic binder (CSA) is calcium sulfoaluminate (CaO-Al ₂ O ₃ -SO ₃ ) is produced by the hydration reaction of lime, gypsum, bauxite. At this time, when CaO and SO ₃ act as stimulants of the blast furnace slag fine powder among the chemical components of CSA, aluminum hydroxide and ethrinzite (Ettringite, 3CaOAl ₂ O ₃ CaSO ₄ 32H ₂ O) are produced. The confinement of the 32 molecules of water molecules consequently confines the blast furnace slag fine powder, which constrains the blast furnace slag fine molecule, thereby strengthening the bond and increasing the strength in the long term. In addition, the blast furnace slag is a latent hydraulic material, the amount of calcium hydroxide is reduced in the process of curing with water under an alkaline component including calcium hydroxide produced by CaO in the CSA to reduce the pH.

At this time, when the content of the inorganic binder is less than 12% by weight (body part) and 13% by weight (final part), the strength such as compressive strength may decrease, and the content is 15% by weight (body part), 16% by weight ( If the finish is over, the permeability may be reduced. In addition, when the content of the blast furnace slag powder is less than 9% by weight (body part), 10% by weight (finish part), the strength, such as compressive strength may be lowered, the content is more than 12% by weight (body part, finish) Even in this case, strength such as compressive strength may be lowered.

The crushed aggregate uses different sizes for the trunk (3) and finish 30, the size of 5-10 mm for the trunk (3) and 1-2.5 mm for the finish (30) use. In addition, the specific gravity of the crushed aggregate is 2.5, the porosity is 40% or more.

The anion stone used in the body part 3 and the finish part 30 emits negative ions to clean, deodorize, and sterilize the air, and prevents contamination by various molds on the surface of the bench block generated over time. Provide space. At this time, the anion stone is quartz (Quartz, 45.6% by weight), plagioclase (Plagioclase, 25.8% by weight), feldspar (K-feldspar, 21.5% by weight), chlorite (6.2% by weight), biotite (0.9% by weight) It is composed of, the anion stone mixture thus composed may contain 1.32 mg / kg more germanium.

The admixture (thickener) used in the trunk portion 3 is cellulose-based, and by using such a cellulose-based admixture, the viscosity of the trunk portion 3 is increased to prevent the collapse of the trunk portion 3 by weight immediately after molding. Can be. In this case, the cellulose used is alpha cellulose, methyl cellulose, methyl hydroxypropyl cellulose, methyl hydroxypropyl cellulose, ethyl cellulose, ethyl hydroxyethyl cellulose, hydroxy

Propyl cellulose, hydroxyethyl cellulose, benzyl cellulose, and cellulose acetate. Here, when the content of admixture is less than 3% by weight, the trunk portion 3 may collapse, and when the content is more than 6% by weight, the strength of the bench block may occur.

In addition, the waste concrete recycled aggregate used in the trunk portion 3 increases the porosity of the trunk portion, and if the content of the recycled aggregate is less than 8% by weight and the content is more than 12% by weight, the desired porosity cannot be obtained.

Vermiculite used in the finish portion 30 is because the water absorption rate, water permeability, drainage, water retention, etc. is good, bringing an increase in water retention, water permeability, moisture retention of the bench block. And vermiculite has a temperature-saving effect can prevent a sudden temperature rise of the surface in the summer. When the content of the vermiculite is less than 3.5% by weight, it may not have excellent water retention, permeability, and moisture retention, and when the content is more than 6% by weight, strength such as compressive strength may be lowered.

Wood chips used for the finish 30 is improved due to its texture, the landscaping of the surface of the finish 30 and increases the moisture retention due to the porous structure of the wood chip. In addition, the wood chips used had a specific heat of 0.5 kcal / kg ℃ (without wood chips; 0.21 kcal / kg ℃) and a thermal conductivity of 0.11 kcal / mh ℃ (without wood chips; 1.4 kcal / mh ℃). The surface temperature of the unit 30 is controlled to increase. At this time, the temperature which can be controlled is about 5 degreeC. In this case, when the content of wood chips is less than 37% by weight, the texture of the wood chips may not be revealed and may not have moisture retention. When the content is more than 41% by weight, the inorganic binder, blast furnace slag fine powder, and crushed aggregates may be used. Due to the decrease in the content of the strength may be reduced.

In addition, the glass chip improves the landscaping by showing the color of the glass itself on the surface, and because of the excellent glossiness due to the glass, it helps to easily identify the position of the bench block due to the reflection of light during night traffic of pedestrians or vehicles. Helping pass by giving At this time, if the content of the glass chip is less than 37% by weight can not cause gloss in the finish 30, when the content is more than 41% by weight relatively less content of inorganic binder, blast furnace slag powder, crushed aggregates, etc. Physical properties, such as strength, may fall.

In addition, natural stone can improve the landscaping by expressing the intrinsic color of the colored aggregate on the surface as it is. At this time, when the content of natural stone aggregate is less than 37% by weight, the intrinsic color of the aggregate cannot be expressed, and the landscaping property is decreased. When the content is more than 41% by weight, the content of inorganic binder, blast furnace slag powder, crushed stone aggregate, etc. It may decrease, resulting in poor physical properties such as strength.

6 is a flowchart illustrating a procedure of manufacturing the trunk portion of the bench block.

The body mixture forming the body part 3 is 12-15% by weight of inorganic binder (CSA), 9-12% by weight of blast furnace slag, 8-12% by weight of waste concrete recycled aggregate (1-2.5 mm), general aggregate (Crushed aggregate) 57-60 weight% and a cellulose type admixture (thickener) 3-6 weight%.

Referring to Figure 6, the trunk portion 3 is a waste concrete recycled aggregate (1-2.5 mm) 8-12% by weight, general aggregate (crushed aggregate) 57-60% by weight, functional aggregate with respect to 100 parts by weight of the body mixture (Anionic stone, 1-2.5 mm) 16-19 parts by weight and 1-3 parts by weight of inorganic pigment (pigment) are added to the mixing facility, followed by 12-15% by weight of inorganic binder (CSA) and 9-12% by weight of blast furnace slag powder. 3-6% by weight of the cellulose-based admixture (thickener) was added to make it a homogeneous material, and then 4-6 parts by weight of water was added to 100 parts by weight of the body mixture (S110).

The mixed material is put into a mold for forming the trunk portion 3 of the bench block 1, wherein the mold is formed with an inclined surface at the edge of the upper surface, and the protrusion is directed into the mold to form a drainage groove communicating with the inclined surface. It is formed to. The mixture is introduced into the mold in a preheated state. When the mixture is introduced into the mold, the body portion 3 is formed by applying vibration pressure in a temperature range of 100 to 200 ° C. At this time, the mold is inserted a heating wire that can adjust the temperature, the temperature of the mold is inserted into the heating wire is preferably maintained at 100-200 ℃, preferably 140-160 ℃. When the temperature of the mold is less than 100 ℃, a part of the surface of the body portion 3 may be stuck to the mold falling or lifting, if the temperature exceeds 200 ℃ may evaporate the moisture of the surface layer to dry form (S120) ).

The molded body portion 3 is cured by curing. In order to cure the trunk portion 3, the molded block is stored at room temperature for 2 hours in an enclosed space, and steam is added so that the relative humidity is 100%. After the steam is added, heat radiation is continuously applied to dry curing (S130). Such dry curing means curing method by heat except wet curing, film curing, and electric curing. Preferably, the dry curing is left for 2 hours or more at about 20 ° C., and then heats for 9-10 hours with heat of 40-50 ° C. It means to cure.

The surface of the cured and cured torso 3 is sealer coated for anti-whitening, surface protection, and durability. At this time, the sealer coating is to apply a one-component oil-based acrylic resin-based material to the thickness of 20-35 ㎛ uniformly using an air spray (S140).

The body part 3 and the body part 3 formed as described above are fixed by fastening the finishing part 30 with a screw (S150).

7 is a flowchart illustrating a procedure of manufacturing the finish of the bench block.

Referring to FIG. 7, the mixture of the finishing part forming the finishing part 30 fastened to the upper surface of the body part 3 manufactured by FIG. 6 is 13-16 wt% of inorganic binder (CSA), blast furnace slag fine powder 10- 12 wt%, crushed aggregate 26-29 wt%, vermiculite 3.5-6 wt% and wood chips (1-2.5 mm) 37-41 wt%, glass chips (1-2.5 mm) 37-41 wt%, natural stone chips ( 1-2.5 mm) any one chip selected from the group consisting of 37-41% by weight.

Referring to FIG. 7, 8-21 parts by weight of functional aggregate (anionic stone, 1-2.5 mm) was added to the mixing facility based on 26-29% by weight of crushed aggregate, 3.5-6% by weight of vermiculite, and 100 parts by weight of the finish mixture. After the inorganic binder (CSA) 13-16% by weight, blast furnace slag fine powder 10-12% by weight, the group consisting of wood chips (1-2.5 mm), glass chips (1-2.5 mm), natural stone chips (1-2.5 mm) 37-41% by weight of any one of the selected chip is added to dry to homogeneous material, and then 6-9 parts by weight of water is added to 100 parts by weight of the finish mixture (S210).

After the mixture is put into the mold for forming the finishing portion 30, and then molding (S220) under the same conditions as in step S120 and then dry curing (S230) under the same conditions as in step S130 to produce a hardened finish 30 do. At this time, the mold is formed with a through groove that allows the screw to pass through the edge to be installed on the upper body portion.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. These examples and comparative examples are only for illustrating the present invention in more detail, it is to those of ordinary skill in the art that the scope of the present invention is not limited by these examples in accordance with the gist of the present invention. Will be self explanatory.

Comparative Example 1. Production of trunk

26 g of OPC (Portland Cement), 52 g of 5-8 mm crushed aggregate, 8 g of waste concrete aggregate of 4-6 mm, 11 g of anionic stone of 1-2.5 mm and 0.5 g of water reducing agent Then, 2.5 g of water was added, mixed for 2-3 minutes, and molded in a mold, followed by dry curing at 50 ° C. for 10 hours to prepare a body of a bench block.

Comparative Example 2. Body Production

59 g of crushed aggregate (1-2.5 mm), 8 g of waste concrete recycled aggregate (1-2.5 mm), 18 g of anionic stone (1-2.5 mm) and 0.5 g of inorganic pigment were added to the mixing facility, followed by CSA 12 g and blast furnace. 10 g of fine slag powder and 4 g of a reducing agent were added thereto. Then, 5 g of water was added and mixed for 2-3 minutes to form a mold, which was left in the air at 20 ° C. for 2 hours, followed by a dry curing process for 10 hours with heat dissipation at 50 ° C. to manufacture the body of the bench block. It was. After that, the surface of the cured body was coated.

Comparative Example 3. Body Part Manufacturing

56 g of crushed aggregate (1-2.5 mm), 7 g of recycled concrete (1-2.5 mm), 18 g of anionic stone (1-2.5 mm) and 0.5 g of inorganic pigment were added to the mixing facility, followed by CSA 12 g and blast furnace. 10 g of fine slag powder and 2 g of cellulose-based admixture were added. Then, 2.45 g of water was added and mixed for 2-3 minutes to form a mold, followed by steam curing at 50 ° C. for 10 hours to prepare the body of the bench block.

Example 1 Body Production

58 g of crushed aggregate (1-2.5 mm), 9 g of waste concrete recycled aggregate (1-2.5 mm), 16 g of anionic stone (1-2.5 mm) and 1 g of inorganic pigment were added to the mixing facility, followed by 13 g of CSA and blast furnace. 13 g of fine slag powder and 4 g of a cellulose-based admixture were added thereto. Then, 4.5 g of water was added and mixed for 2-3 minutes to form a mold, which was left in the air at 20 ° C. for 2 hours, followed by a dry curing process for 10 hours with heat dissipation at 50 ° C. to manufacture the body of the bench block. It was. After that, the surface of the cured body was coated.

Comparative Example 4 . Finish Manufacturing

26 g of OPC (Portland Cement), 52 g of 5-8 mm crushed stone aggregate, 8 g of 1-2 mm waste concrete aggregate, 11 g of 1-2.5 mm anion stone, and 0.5 g of water reducing agent After 2.5 g of water was added and mixed for 2-3 minutes to mold in a mold and dried for 10 hours at 50 ℃ to prepare a finish of the bench block.

Example 2. Finish Preparation

27 g of crushed aggregate (1-2.5 mm), 4 g of vermiculite (1-2.5 mm) and 17 g of anionic stone (1-2.5 mm) were added to the mixing facility, followed by 13 g of CSA, 11 g of blast furnace slag powder, and wood chips. g was added. Then, 7 g of water was added and mixed for 2-3 minutes to form a mold, which was left in the air at 20 ° C. for 2 hours, followed by a dry curing process for 10 hours with heat dissipation at 50 ° C. to manufacture the finish of the bench block. It was.

Example 3. Finish Preparation

27 g of crushed aggregate (1-2.5 mm), 4 g of vermiculite (1-2.5 mm) and 17 g of anionic stone (1-2.5 mm) were added to the mixing facility, followed by 13 g of CSA, 11 g of blast furnace slag powder, and 38 glass chips. g was added. Then, 7 g of water was added and mixed for 2-3 minutes to form a mold, which was left in the air at 20 ° C. for 2 hours, followed by a dry curing process for 10 hours with heat dissipation at 50 ° C. to manufacture the finish of the bench block. It was.

Test Example .

The torso and the finish prepared in Example were subjected to each test with a dry cured specimen after molding.

end. Porosity measurement: Measure the porosity by the volume method of 'Porosity Test Method of Porous Concrete'.

Majority percentage (%) = [1- (W2-W1) / V1] X 100

V1: volume of specimen, W1: underwater weight of specimen

W2: Weight after leaving for 24 hours

I. Compressive strength measurement: Measure by compressive strength test method of KS F 2405-8 concrete.

All. Permeability coefficient measurement: Measure by 'permeability test method of porous concrete'.

K _T = (L / h) X [Q / [AX (t2 -t1)]

K _T : Permeability coefficient (cm / sec) at T ℃, L: Height of specimen (cm)

Q: Flow rate from time t1 to t2 (cm ³ ), h: Water level difference (cm)

t1: measurement start time (s), t2: measurement end time (s)

A: specimen cross section (cm ² )

la. pH measurement test: Soak the block in distilled water so that the ratio of porous concrete block (28 days, 20 cities, air curing) and distilled water is about 1:10, and measure the pH using a simple pH meter.

hemp. Hexavalent chromium dissolution test: Performed by the Waste Process Test Method of the Ministry of Environment. 100 g of porous concrete block (28 days, 20 cities, air curing) is added to a 2000 ml Erlenmeyer flask containing 1000 ml of distilled water (0.1 N HCl solution is added to adjust pH to 5.8-6.3). Shake 6 hours continuously at 200 times / min (4-5 cm amplitude). Then, distilled water shaken by filtration using 1.0 μm glass fiber filter paper was extracted and subjected to hexavalent chrome dissolution test.

bar. Moisturizing test: Measure the dry block weight and submerge the block in water for 24 hours, and then measure the moisture content change through weight change after storage for 10 hours in a thermo-hygrostat (state humidity RH 20%, 30 ℃). .

Water retention test (repair rate) (%) = [Weight after 24 hours immersion (g)-Weight after drying for 10 hours constant temperature and humidity chamber (%)] / Weight of dried block (g)

four. Anion generation amount: Measure the anion generation amount according to 'KICM-FIR-1042'.

Ah. Glossiness measurement: Performed in accordance with KS L 0069 Mirror surface glossiness measurement method. Using the light flux of the gaping feeling prescribed | regulated to a block surface, the luminous angle luminous flux which reflects in the mirror surface reflection direction is measured by a light receiver.

G _s (θ) (%) = (φ _s / φ θ _s ) × (gloss of standard surface used)

character. Whitening phenomenon: 1 to 5 depending on the degree of whitening phenomenon.

One … Not whitening at all. 2 … Is displayed. 3…. Partly whitened. 4 … Whitened. 5…. Whitening over the entire surface.

Table 1 below compares the test examples of Comparative Example 1-4 and Example 1-3.

Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Example 1 Example 2 Example 3 Major Porosity (%) 20.1 17.5 19.1 20.3 19.5 20 19.3 Compressive strength (Mpa) 15 15.2 17.1 15.2 28 21 22 Permeability coefficient (cm / sec) 0.01 or less 0.01 0.04 0.01 or less 0.06 0.09 0.09 pH 11.2 9.4 9.2 11.7 9.5 9.4 9.2 Hexavalent chromium U radish radish U radish radish radish Moisturizing test (%) 3.1 2.9 3.4 3.5 7.7 13.0 12.8 Anion amount (ions / cm ₃ ) 800 1000 1250 700 1300 1400 1450 Gloss amount (uW) ㅡ ㅡ ㅡ 15 ㅡ ㅡ 95 Whitening outbreak 3 One 5 3 One One One

In the results of Table 1, OPC cement is used instead of inorganic binder, but the porosity is similar, but compressive strength (quality standard value of bench block: 20 Mpa) and permeability coefficient (quality standard value of bench block: 0.01 cm / sec) In addition to low), hexavalent chromium elutes and has a high pH, which is harmful to the human body.

In addition, when using a water reducing agent or a cellulose-based admixture according to the content range, it was confirmed that the torso portion produced could not bear weight.

In addition, through dry curing and sealer coating it was confirmed that whitening phenomenon is reduced.

At this time, the torso and the finish was tested, respectively, the bench block of the present invention is used by fastening the torso and the finish through the test example has the same results as the results of the test example.

1 and 2 are a perspective view of the separation and combination showing the bench block according to a preferred embodiment of the present invention.

3 and 4 are a front view and a plan view of FIG.

FIG. 5 is a sectional view taken along line B-B in FIG. 4; FIG.

6 and 7 are flow charts showing the procedure for manufacturing the benchblock.

<Explanation of symbols for the main parts of the drawings>

1: bench block 3: body

4: seating groove 5: inclined surface

7: drain groove 9: fastening groove

30: finish 31: the top plate

33: parts 35: fasteners

Claims (11)

To include a body portion, and the finish portion is installed on the upper surface of the body portion, The body portion 12-15% by weight of non-cement-based inorganic binder (Calcium Sulfur Aluminate, CSA), 9-12% by weight fine blast furnace slag, 8-12% by weight of waste concrete recycled aggregate, 57-60% by weight of crushed aggregate and admixture 3 A body mixture consisting of -6% by weight, the surface of the body being coated with a sealer coating agent, Bench finish, characterized in that the finish is porous. The method of claim 1, The upper edge of the body portion is formed with an inclined surface, Bench side, characterized in that the side of the body portion is formed with drain grooves communicating with the inclined surface. The method according to claim 1 or 2, The finish portion is a bench block, characterized in that the plate shape of any one of metal, glass, wood. delete The method of claim 1, The body portion bench block further comprises 16-19 parts by weight of anion stone and 4-6 parts by weight of water based on 100 parts by weight of the body portion mixture. The method of claim 1, The admixture is a bench block, characterized in that the cellulose-based. The method of claim 1, The finish is 13-16% by weight of inorganic binder (CSA), 10-12% by weight of blast furnace slag, 26-29% by weight of crushed aggregate, 3.5-6% by weight of vermiculite and wood chips, glass chips, natural stone chips Bench block characterized in that the finish mixture made by adding any one of the chips selected 37-41% by weight. The method of claim 7, wherein The finish portion of the bench block, characterized in that further comprises 8-21 parts by weight of anionic stone and 6-9 parts by weight of water based on 100 parts by weight of the finish mixture. Body part consisting of 12-15% by weight of inorganic binder (CSA), 9-12% by weight of blast furnace slag, 8-12% by weight of waste concrete recycled aggregate, 57-60% by weight of crushed aggregate and 3-6% by weight of cellulose admixture 100 parts by weight of the mixture; 16-19 parts by weight of anionic stones and 1-3 parts by weight of inorganic pigments were mixed and dried, followed by mixing 4-6 parts by weight of water, Forming and curing the inclined surface is formed on the edge of the upper surface, and the mixed material in a mold formed in the protrusion formed inwardly connected to the inclined surface, A first step of manufacturing a torso including a sealer coating to the cured torso to a thickness of 20-35 μm; Inorganic binder (CSA) 13-16% by weight, blast furnace slag fine powder 10-12% by weight, crushed stone aggregate 26-29% by weight, vermiculite 3.5-6% by weight and any one selected from the group consisting of wood chips, glass chips, natural stone chips 100 parts by weight of the finish mixture consisting of 37-41% by weight of the chip; mixed 8-21 parts by weight of anionite to dry and then mixed 6-9 parts by weight of water, A second step of manufacturing a finishing part, including forming and curing the mixed material into a mold having a through groove formed at an edge thereof so as to be installed on an upper surface of the body part; Bench block manufacturing method characterized in that it comprises a third step of fastening the body portion and the finish. The method of claim 9, The molding is a bench block manufacturing method, characterized in that the vibration is made at a temperature of 100-200 ℃. The method of claim 9, The curing is a bench block manufacturing method characterized in that the dry curing curing for 9-10 hours by heat radiation at 40-50 ℃ after leaving in air for 2 hours at 20 ℃.

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