KR20120083561A - The method of constructing protective layer of street tree - Google Patents

Abstract

PURPOSE: A construction method of a roadside tree protection layer using cork is provided to protect roadside trees from harmful insects and contaminants, and to improve the abrasion resistance of the roadside tree protection layer. CONSTITUTION: A construction method of a roadside tree protection layer using cork comprises the following steps: digging up soil from the blank area around a roadside tree and a curb, and flattening the ground to form a foundation bed; installing and fixing a roadside tree edge mold based on a semi-circular member(1, 1'), a roadside tree supporting edge mold on the predetermined location on the foundation bed; installing a base layer composition on the flat ground inside the curb for constructing a base layer, and hardening the base layer; coating a synthetic resin primer layer on the base layer; and installing a surface composition on the base layer, and pressurizing the surface composition with a roller before hardening.

Description

The method of constructing protective layer of street tree}

The present invention relates to a method for constructing a roadside protective layer having elasticity and permeability using cork. Specifically, a blank space between a roadside border stone (pedestrian block boundary stone) and a roadside tree of rectangular or circular shape is dug to a certain depth and the ground is smoothed. Then, install the edge molding mold around the roadside tree on the ground, and in some cases the roadside support tree edge forming mold, and install the base bottom layer with coarse aggregate, fine aggregate, ore particles, charcoal, solidification material, and solidifying solution in the face of blank paper. The present invention relates to a roadside protective layer construction method by forming a next roadside surface layer as a cork composition thereon.

Cork is obtained from the shell of oak tube, and the cell wall of cork is formed by deposition of polymer of fatty acid called Sverin, and it is not easily corroded or deteriorated like wood, and has excellent insulation, sound insulation, electrical insulation and elasticity. It is widely used as bottle cap, shoe insole, insulation container, soundproof wall, and interior lining board. Jang Ho-seok, sericite particles and charcoal powder are fine porous materials, which have air permeability and permeability and antibacterial and bactericidal properties. can do.

In addition, as a surface layer composition for forming a protective layer, it can be said to be a method of constructing a roadside protection plate constructed of materials consisting of compositions composed of cork particles, anatase stone mineral particles, polyurethane adhesives, and silane capping pigments. .

The roadside trees planted on the sidewalks of the main road are currently installed with roadside protection plates in the margins between the roadside trees and the square or circular rim stones (boundary stones). The roadside protection plates that make up the main slave are plate-shaped steel structures formed by casting. It is unrivaled in terms of solidity. However, as the price of scrap metal rises, it is often the case that a steel protection plate installed in a secluded place is stolen.Therefore, it is common to see roadside trees without a protection plate. If it is installed, there are many exposed areas of the ground, and if it rains severely, soil from the ground will be pushed to the sidewalk and contaminate the sidewalk. In some cases, snow accumulates or the pedestrian's high heels are caught between the guard plate structures at night. Injuries also occur.

There is also a roadside protection plate made of a plastic structure of bipartite or dozens of assembled plastics between the rim stone and the roadside tree. This can be expected in terms of weight reduction and cost reduction, but it is similar in structure to steel protection plates, so soil or sand on the ground is pushed to the sidewalks and pollutes the sidewalks. Injury is no different from a steel shroud.

In addition, since it is light weight around 1 or more, it is easily detached from the inside of the edge stone even in heavy rain or slight impact. Especially, dozens of plastic protective plates are partially lost and unsightly.

In the above, the general roadside protection plate currently used is mentioned, but unusual conventional roadside protection plates are also introduced.

In Korea Patent Publication (Registration No. 10-0416077), roadside protection plate is introduced. The technology consists of 10-30 parts by weight of a urethane prepolymer, 30-50 parts by weight of a polyol compound, 0.05-0.5 parts by weight of an addition reaction catalyst compound, 20-50 parts by weight of a filler, and 1-5 parts by weight of a plasticizer. As the protection plate, two pieces to eight pieces may be assembled to form a shape that can completely cover the soil around the roadside tree, and the roadside protection plate may be referred to as a roadside protection plate constructed to be integral with the boundary stone.

When the roadside protection plate is formed of several pieces, the detachment from the inside of the border stone (boundary stone) occurs like the assembled protection plate of the plastic molded structure described above, and the polyurethane is integrally integrated into the front surface inside the boundary stone. Without the solid foundation layer, rainwater penetrates the coated protective plate without a solid foundation layer, and soil or sand flows out of the space between the polyurethane protective plate and the roadside to form a depression. As the uneven portion is severely formed, it turns into a bad appearance.

As another conventional roadside protection plate, a "tree protection plate using coir fibers" is introduced in Korean Patent Publication (Registration No. 0804634). In other words, non-woven fabric sheet formed by arranging the coir fibers in parallel or in an opposite direction and applying an adhesive, and then compressing the non-woven fabric or a nonwoven fabric mixed with coir fibers and rubber fibers, or a nonwoven fabric of coir fibers and a rubber yarn nonwoven fabric alternately laminated. It is a tree protection plate formed with a tree opening on a laminated woven board, which can be advantageous in terms of economics such as material cost and construction cost, and may prevent the reproduction of breathable weeds at the initial stage of installation. Due to the lack of support and the large number of sexual voids, the sediment flowing through the sidewalk due to the rain is accumulated and fixed in the non-woven fabric's sexual vacancies, which eventually becomes a soil mass, and weeds stick to it, and the air gap is reclaimed. Therefore, it is difficult to expect commercialization.

Another conventional technique is disclosed in the "roadside protection plate using waste tires" in the Utility Model Registration (Registration No. 0236377). The technology consists of a number of submerged holes in two or four quarters in a square laminate that laminates a rubber chip, a pigment, and a polyurethane with a cured upper layer and a rubber chip, a silica sand, and a polyurethane with a cured lower layer. It is a roadside protection plate using the waste tire which formed the circular space part (a street insertion hole) in the center. This is also likely to be lost as a prefabricated roadside protection plate made mainly of rubber and synthetic resin.

Each roadside protection plate has its own advantages and disadvantages, but the roadside protection plate made of plastic, non-woven fabric of synthetic fiber or rubber, and polyurethane and rubber plate has reached the end of its life, causing secondary pollution upon disposal. The problem must be taken into account.

The construction method of the roadside protective plate having elasticity and permeability using the cork according to the present invention prevents deformation or detachment of the surface layer made of the cork composition by solidifying the base layer, and the base layer contains antibacterial and bactericidal substances, It provides a method of constructing a roadside protection layer using cork that improves walking comfort and abrasion resistance and protects roadside trees from contaminants by providing elasticity, abrasion resistance, and purification of contaminated air and sewage to the surface layer. .

Dig out the blank space between the roadside border stone and the roadside tree, smooth the bottom, and then press harden by filling the kneaded homogenized mortar with coarse aggregate, fine aggregate, solidified powder, mineral porous particles and charcoal. The object of the present invention is to provide a method for constructing a roadside protection layer in which a surface layer composition composed of cork particles, anatase particles, polyurethane adhesives, silane capping agents, and inorganic pigments is poured to smoothly form the surface layer by roller compaction. Could be achieved.

The roadside protection layer according to the present invention can improve the durability of the roadside protection layer by stacking the surface layer integrally on the base layer of the solidified layer, and improve the air permeability of the roadside protection layer while decomposing by CO ₂ and plant roots by soil microorganisms. CO ₂ can be excluded from the respiration of the outside and the oxygen supply from the outside can facilitate the growth of the plant and can maintain moisture in the dry season because it has water retention, and also has antibacterial and bactericidal properties, In particular, the surface layer of the protective layer contains photodegradable substances to purify the contaminated air and water quality, which can remove obstacles to tree growing and in addition, it has elasticity to improve walking comfort and ensure pedestrian safety. It can be called a roadside protective layer using a cork.

1 is a roadside rim stone molding mold.
2 is a roadside tree.

The present invention relates to a construction method of a roadside protective layer using a cork that has improved the problems of the conventional roadside protection plate.

Step 1 to form a foundation floor by digging soil and smoothing the floor from the blank between the roadside border stone and the roadside tree,

2 steps to install and fix the roadside frame molding mold and the roadside support frame molding mold at the predetermined position of the foundation floor,

100 parts by weight of coarse aggregate, 8 parts by weight of aggregate, 5 parts by weight of porous mineral powder, 3 parts by weight of porous mineral powder, 1.5 parts by weight of charcoal powder, 15 parts by weight of 5 wt% solidifying solution Adding and homogenizing the base layer composition, which is added and homogenized, and then solidified,

4 step process of coating the synthetic primer primer layer 1 ~ 1.5mm on the base layer,

Cork particles 46-70%, Anatase 13-19%, Polyurethane adhesive 18-26%, Silane capping agent 2.4-3.6%, Pigment 1-1.5% in an apparent volume ratio on the primer layer It relates to a roadside protective layer construction method using a cork consisting of five steps to pour the surface composition homogenized and compacted after the roller.

In addition, in the three-step process, it may be formed of another base layer composition in order to give elasticity to the base layer and absorb the impact. It is composed of 100 parts by weight of coarse aggregate, 6 parts by weight of fine aggregate, 10 to 15 parts by weight of polyurethane or acrylic adhesive, and 8 parts by weight of cork particles.

In the first step of the construction method, the degree of digging of the blank paper is dug to the depth of about 5 ~ 6cm from the horizontal surface of the surrounding sidewalk block to form a smooth base surface.

In addition, in the two-step process, the roadside frame forming mold is a symmetrically assembled cylindrical tube having a diameter of 4 to 6 cm larger than the diameter of the tree, as shown in FIG. The molding mold and the molding mold of the roadside support tree have a cylindrical tube and two handle holes are symmetrically drilled on the side of the upper side as shown in FIG. 2.

In FIG. 1, reference numerals 1 and 1 'are semi-cylindrical bodies, and reference numerals 2 and 2' are handle engagement numerals 3 and 3 ', respectively, and an engagement coupling portion.

In Fig. 2, reference numerals 11 and 11 'denote cylindrical bodies, and reference numerals 12 and 12' denote handles.

And the large aggregate of the composition to form the base bottom layer is 5 ~ 12mm size, fine aggregate 1 ~ 3mm size, mineral powder Jang Hoseok and sericite particles and charcoal powder is the size of 0.05 ~ 0.1mm range, limestone powder 400 ~ 500 mesh A range of fine particles is used.

In addition, the small aggregate is the size and amount that can be filled in the gap formed when the large aggregate and the large aggregate is stacked, the mineral powder and charcoal powder is filled in the gap between the large aggregate and the small aggregate, and the fine powder and solidifying liquid Each composition is fixed and fixed by the solidification reaction.

The solid formed in this way does not have the same strength as cement concrete, but can be given adequate breathability and water permeability instead of being strong enough to fix the surface layer. There is an advantage that can be used again.

Another feature of the base layer is that the amount of the cork particles and the adhesive blended is small. If the cork particles or the adhesive are used a lot, water permeability and air permeability cannot be secured.

Sericite, which is a kind of Jang Ho-seok and biotite used in the base layer, is an alkaline and fine porous material, which has a moisture control function, water permeability, water retention, antifungal properties, antibacterial and far-infrared radiation function, and charcoal. It is known that the material has a fine porosity and has a humidity control function, water permeability, water retention, antibacterial activity, and sterilization function. In addition, limestone, fry ash, volcanic ash and gypsum are materials having a solidification property, and one or more selected from among sulfonate, calcium chloride, magnesium chloride and aluminum chloride is used as the hardening agent. In the case of the concrete layer using the cement which is water-curable by the hydration reaction, the loss of the functions of the foundation layer is increased. For example, it has a high strength, it is impossible to reuse the base layer composition at the time of repair and can not expect adequate breathability, water permeability, water retention, humidity control function, etc. In the present invention applies a solidified layer by a solidifying agent.

In particular, the function of Jang Ho Seok powder in the above-described composition will be described in detail.

Far-infrared radiation function of Jang Ho-seok (aka: Chrysanthemum). Test Items Test result Test Methods Far infrared ray emission amount
140 ° C Emissivity (5 ~ 20㎛) 0.919
KICM-FIR-1005 Radiation energy (W / ㎡) 3.71 × 10 ²

※ The test results in the above table (1) are the results of experiments conducted by Prof. Actor Hyun-Ah, Department of Chemistry, School of Basic Science, Gyeongsang National University.

Antimicrobial test results of Jang Ho-seok.
Test Items Test result
Test Methods Initial concentration
(CFU / 40p) Concentration after 24 hours
(CFU / 40p) Bacterial reduction rate
(%) Antibacterial test by E. coli BLANK 411 2830 -
KICM-FIR-
1002 Rock (Chrysanthemum) 411 112 72.7 Antibacterial test by Pseudomonas aeruginosa BLANK 428 2898 - Rock (Chrysanthemum) 428 196 54.2

※ This is a test analysis report of Korea Building Materials Testing & Research Institute.

※ Use strain

   Eschericichia coli ATCC 25922

   Pseudomonas aeruginosa ATCC 15442

In the above Tables (1) and (2), Jang Ho-seok is known to have excellent far-infrared radiation, antibacterial and bactericidal properties. Sericite, a vermiculite, is already known as a material having far-infrared radiation and antimicrobial properties. Charcoal is a porous material with minimal far-infrared radiation but with bactericidal and antimicrobial properties.

In addition to the above-mentioned composition of the surface layer, further increasing the amount of cork particles improves elasticity, but decreases air permeability and water permeability and weakens wear resistance of the surface layer, thereby deteriorating durability.

In addition, anatase is excellent in hardness of 5.5 ~ 6, which enhances the wear resistance of cork particles with low wear resistance and imparts water permeability, and has the function of purifying polluted air and wastewater, and organic matter contained in VOC material and soot. It can decompose nitrogen compounds and can remove obstacles to tree growing by having the function of photocatalyst to decompose organic substances in sewage.

Here, anatase is also called anatase, and the particle size is about half the diameter of cork particles, and the main component is TiO ₂ , which is different from titanium ore such as ilmenite or brookite. It has the function of decomposing organic pollutants and the function as a result, the following results were obtained.

1) Water Purification Function.

First, the water purification function is filled with 30 liters of contaminated water in a 50 liter container, and 5 kg of anatase particles are deposited therein, and the chemical oxygen demand (COD) and As a result of observing the water pollution indicators of total nitrogen (TN) and total phosphorus (TP), the results of changes in the water pollution indicators as shown in Table (3) were examined.

Result table of changes in water pollution indicators. Item COD (mg / L) T-N (mg / L) T-P (mg / L) Add 3 kg of anatase granules to filthy water of sample (50 L) Early 7 days 28 days Early 7 days 28 days Early 7 days 28 days
164


80
64.8
14.6
10.1
9.34
2.8
0.48
2.60

2) Atmospheric purification function.

In order to evaluate the atmospheric purification performance of anatase powder, the decomposition efficiency of acetaldehyde (CH ₃ CHO) was evaluated by irradiating ultraviolet rays for 20 hours by the gas bag B method proposed by the Korean Photocatalyst Association. The test method is to put 2kg of anatase powder into a 10ℓ gas bag, inject 4ℓ of acetaldehyde and air mixed gas, and leave it in the dark room for more than 5 hours to make acetaldehyde concentration of sample and mixed gas in parallel and then 10m To evaluate the performance of anatase granules having a photocatalytic function by observing the change of acetaldehyde concentration while irradiating UV light having W / cm 2 light and UV-A wavelength for about 20 hours. Got it.

Acetaldehyde decomposition rate by gas bag B method of anatase powder. Standard Classification Initial concentration 2 hours 10 hours 20 hours Removal rate Anataze Stone Powder 150 85 132.5 148.8 99.2

In addition, the evaluation efficiency of benzene, toluene, and xylene was evaluated as 98.2%, 96.7%, and 94.6%, respectively, in order to evaluate the removal function of other evaporative organic compounds.

In addition, it is a flexible urethane adhesive with excellent abrasion resistance, chemical resistance, oil resistance, and ozone resistance, and excellent adhesive strength and elasticity.Silane capping agent is a silane having an amino group, an epoxy group, and a double bond functional group is an organic material (cork, poly). Urethane) and inorganic materials (aggregates, mineral powders, pigments) are strongly effective as capping agents.

In particular, it is effective to obtain strong adhesive strength when adding inorganic materials to organic materials, and it can be said to be a material that greatly improves adhesive strength and strength even when directly added to synthetic resin, which can form a stronger surface layer and also has strong adhesive strength with the underlying layer of the lower layer. It can have a shear force generated in itself and externally generated between the particle detachment of the surface layer and the heterogeneous layer can be prevented from peeling between layers.

In addition, when the amount of cork particles is excessively used in the composition ratio of the surface layer, elasticity and aesthetics of the surface layer may be improved, but air permeability and permeability may not be expected. Can be. In addition, if the amount of anatase is reduced, the hardness of the surface layer decreases, and the wearability is reduced, and if the excess is used, the elasticity of the surface layer is reduced and hardened, and cracks are easily broken and easily broken.

In addition, if the amount of polyurethane adhesive is excessively used, air permeability and permeability may not be expected first. If the amount is excessively reduced, the tensile strength of the surface layer may be poor and fracture may occur, and cork particles or anatase particles may detach from the surface layer. Since it is easy, it is sufficient to coat the surface of cork particles or anatase particles sufficiently. In addition, the silane capping agent reinforces the adhesive force of the polyurethane, and when a small amount is used, the particles of cork particle anatase tend to detach, and a peeling phenomenon occurs between the base layer and the surface layer. It is economical and tends to harden the surface layer.

The roadside protection layer formed by the above construction method can form the foundation layer as a solidified layer and integrate with the surface layer, thereby preventing the dent of the surface layer caused by the loss of the bottom layer soil, thereby extending the durability of the surface layer and the foundation layer and the surface layer. The air permeability and water permeability improves the soil air circulation and permeability. Poor circulation of soil air affects the respiration of crops, making normal growth impossible. Therefore, the exchange of soil air by the supply of oxygen and the elimination of CO ₂ generated by respiration of plant roots and CO ₂ decomposed by microorganisms is very important for plant growth. In addition, the base layer has water retention by the microporous material, so that moisture can be controlled, and antibacterial and bactericidal properties can prevent roadside pests. In addition, the surface layer is made of cork, so unlike the roadside protection plate made of steel, plastic, and rubber chips, it is made of cork, which is a natural material, which is eco-friendly. It can be called a roadside protective layer using a cork that can ensure the safety of.

1, 1 '....... Semi-cylindrical, 2, 2' ....... Handle
3, 3 '....... engagement coupling, 11, 11' ....... cylindrical body
12, 12 '....... Handle

Claims (5)

Step 1 to form the foundation floor by digging the blank paper between the roadside border stone and the roadside tree and smoothing the bottom.
Step 2 for installing and fixing the roadside frame forming mold and the roadside tree supporting frame forming mold at a predetermined position of the foundation floor,
100 parts by weight of coarse aggregate, 8 parts by weight of fine aggregate, 5 parts by weight of solid mineral powder, 3 parts by weight of porous mineral powder, and 1.5 parts by weight of 5 wt% of solidifying solution in charcoal powder are added to the smooth bottom of the roadside border stone. 3 steps to solidify the base layer by pouring the homogenized base layer composition,
4 steps of coating a synthetic resin primer layer on the base layer,
Cork particles 46-70% in the range of 25-5 mesh, anatase particles 13-19%, polyurethane adhesive 18-26%, silane capping agent 2.4-3.6%, inorganic pigments 1-1.5% Method of constructing a roadside protective layer using a cork consisting of five steps of placing the surface composition obtained by homogenizing the composition to be compacted and cured.
The method of claim 1,
A roadside protective layer construction method using cork, characterized in that the porous mineral powder is Jang Ho-seok or sericite powder.
The method of claim 1,
A method of constructing a roadside protective layer using cork, wherein the highly ignitable material is at least one solidified material selected from limestone, frying ash, volcanic ash, and gypsum.
The method of claim 1,
Solidifying agent is a roadside protective layer construction method using a cork, characterized in that at least one solidifying agent selected from sulfonate, calcium chloride, magnesium chloride, aluminum chloride (AlCl ₃ ).
The method of claim 1, wherein the base layer is composed of 100 parts by weight of coarse aggregate, 6 parts by weight of fine aggregate, 10 to 15 parts by weight of polyurethane or acrylic adhesive, and 8 parts by weight of cork particles. .

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