KR101634868B1 - Permeable Cement Mortar Composite, Retention type Vegetation Parking Block, Vegetation Parking System and Method for Manufacturing the same - Google Patents

Abstract

The waterproofing cement mortar composition according to the present invention is a repair performance improving agent comprising polyacrylonitrile, sodium polyacrylate, acrylamide, ethylcellulose, carboxymethylcellulose and polyvinyl chloride; Inorganic binders; Fine aggregate; Water, and the repair performance improving agent is 0.01 to 20% by weight based on the inorganic binder.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cement mortar composition, a cement mortar composition, a storage type vegetation parking block, a vegetation parking system,

The present invention relates to an environmentally friendly waterproofing cement mortar composition, a storage type vegetation parking block including the same, and a method of manufacturing a storage type vegetation parking block using the same. More particularly, the present invention relates to a method of producing a bottom ash The present invention relates to a composition and a parking block applicable to a parking lot, a bicycle road, a light traffic load passage, a park, a walkway, a sidewalk, a vegetation block, and the like by using a special admixture excellent in boiling water performance and excellent in strength and durability.

The present invention also relates to a water-conserving cement mortar composition for an environment-friendly reservoir type vegetation parking block capable of reducing the heat island phenomenon of the city, increasing the amount of oxygen, and alleviating the mental stress of human being, And a method of manufacturing a block.

Generally, the blocks are divided into two types, cement block and clay block.

Cement block is manufactured by mixing with cement, sand and gravel as main materials and curing. It has various uses and forms according to the composition and curing conditions of materials. In addition, it is also used as a floor block or boundary block for pedestrians in India to improve the aesthetics of pedestrian roads, and the design range of regional and specialized commercial areas and cultures is being developed and its application range is being gradually expanded.

However, the cement block is defective due to deterioration of durability and the like.

The clay block is used as an environmentally friendly material, but on the other hand, there is a problem that the moisture in the capillary of the formed body is evaporated during the drying process after the molding, drying and shrinking occurs, cracks are generated by the drying shrinkage process, There is a problem in that the use of the loess in the building is limited due to the deterioration.

In recent years, the sidewalks, roadways, parks, parking lots, etc. of the dams are used as impermeable concrete pavement or asphalt pavement as a whole. The packaging will remain dry overall.

Such a dry pavement becomes higher in temperature than the general pavement under the same heating condition, which is a cause of the phenomenon that the temperature of the city becomes higher than that of the suburbs, that is, the heat island phenomenon.

Therefore, it is an object of the present invention to provide a waterproof pavement which is capable of easily passing water through the underground and allowing a certain amount of water to be drained over a long period of time, and at the same time, The development of Korea is urgently required.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made to solve the above-mentioned problems of the prior art, and it is an object of the present invention to prevent surface unevenness and clogging due to bleeding which is pointed out as a disadvantage of conventional permeable concrete, to use bottom ash It is an object of the present invention to provide a water-conserving cement mortar composition for an eco-friendly reservoir type vegetation parking block which is excellent in strength and durability when it is manufactured into blocks, and is applicable to bicycle roads, parking lots, light traffic road passing roads and the like.

In order to solve the problems of conventional blocks, the present invention uses bottom ash, which is an industrial waste in general, and has excellent strength and durability so that it can be applied to bicycle roads, parking lots, light traffic roads, And to provide a method and a method for constructing a storage-type vegetation parking block.

In order to accomplish the above object, the present invention provides a waterproofing cement mortar composition comprising a polyacrylonitrile, sodium polyacrylate, acrylamide, ethylcellulose, carboxymethylcellulose and polyvinyl chloride, Improvers; Inorganic binders; Fine aggregate; Water, and the repair performance improving agent is 0.01 to 20% by weight based on the inorganic binder.

The weight ratio of the inorganic binder to the fine aggregate is preferably 1: 0.1 to 1: 4. The fine aggregate is preferably used in a weight ratio of silica sand and bottom ash of 1: 0.01 to 1: 1. The silica sand can be used freely according to the repair performance from 1 to 6.

The water is preferably mixed with 5 to 50% by weight of the inorganic binder.

The inorganic binder is usually 30 to 90 wt% of Portland cement, 5 to 30 wt% of blast furnace slag, 0.1 to 30 wt% of calcium aluminate, 0.1 to 20 wt% of anhydrous gypsum, 0.1 to 20 wt% of fly ash, , 0.1 to 20% by weight of zeolite, 0.1 to 20% by weight of mica, and 0.1 to 5% by weight of water reducing agent.

And further contains 0.01 to 5% by weight of retarder with respect to the inorganic binder.

The inorganic binder preferably further comprises 0.1 to 15% by weight of an inorganic pigment. The inorganic pigment preferably contains at least one of red iron oxide, yellow iron oxide, chromium oxide (Cr 2 O 3), purple iron oxide and black iron oxide (carbon black).

The repair performance improving agent preferably further comprises polyethylene oxide. The polyethylene oxide is preferably contained in an amount of 0.01 to 15% by weight with respect to the repair performance improving agent.

Further, it is preferable that the repair performance improving agent further includes a defoaming agent. The antifoaming agent is preferably contained in an amount of 0.1 to 5% by weight with respect to the repair performance improving agent.

Further, it is preferable that the maintenance performance improving agent further includes a water reducing agent. The water reducing agent is preferably contained in an amount of 0.1 to 5% by weight based on the repair performance improving agent.

In order to accomplish the above object, the present invention provides a method for producing a water-repellent cement mortar composition, comprising: stirring the inorganic binder and the fine aggregate into a forced mixer; Mixing the water and the maintenance performance improving agent with each other, and stirring the mixture for 1.5 to 3 minutes.

The water-retaining cement mortar composition according to the present invention as described above and the method for manufacturing a parking block using the same can prevent surface stain and clogging due to bleeding which is a disadvantage of conventional water-permeable concrete, The durability is excellent, so that it can be applied to parking lots, bicycle roads, light traffic load passing roads, parks, walkways, sidewalks and vegetation blocks.

In addition, the present invention can suppress the non-point pollutant introduced from the non-point pollution source at the beginning and enhance the ground water level as well as easy water retention.

1 is a perspective view of a vegetation parking block including a water-retaining cement mortar composition according to an embodiment of the present invention;
Fig. 2 is a plan view of the vegetation parking block of Fig. 1,
3 is a cross-sectional view taken along line AA of Fig. 2, and Fig.
4 is a conceptual view showing a vegetation parking system in which a vegetation parking block and a water storage block are arranged side by side.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention is not limited to the disclosed embodiments, but is capable of other various forms of implementation, and that these embodiments are provided so that this disclosure will be thorough and complete, It is provided to let you know completely. Wherein like reference numerals refer to like elements throughout.

INDUSTRIAL APPLICABILITY The water-retaining cement mortar composition according to the present invention is basically composed of a repair performance improving agent including polyacrylonitrile, sodium polyacrylate, acrylamide, ethylcellulose, carboxymethylcellulose and polyvinyl chloride, inorganic binder, fine aggregate, Water, and the repair performance improving agent is incorporated in an amount of 0.01% by weight to 20% by weight based on the amount of the inorganic binder mixed, which exhibits excellent water retention and strength as described later.

Here, the weight ratio of the inorganic binder to the fine aggregate is preferably in the range of 1: 0.1 to 1: 4. The fine aggregate is preferably used in a ratio of 1: 0.01 to 1: 1 in a weight ratio of silica sand and bottom ash. The silica sand can be used freely according to the repair performance from No. 1 to No. 6.

The amount of the water is preferably 5 to 50% by weight based on the inorganic binder.

The inorganic binder is usually 30 to 90 wt% of Portland cement, 5 to 30 wt% of blast furnace slag, 0.1 to 30 wt% of calcium aluminate, 0.1 to 20 wt% of anhydrous gypsum, 0.1 to 20 wt% of fly ash, , 0.1 to 20% by weight of zeolite, 0.1 to 20% by weight of mica, and 0.1 to 5% by weight of water reducing agent.

It is preferable to use the ordinary Portland cement specified in KS.

The blast furnace slag, fly ash and glass bubble are used for potential hydraulic characteristics, long-term strength development and durability enhancement. When the weight ratio of blast furnace slag, fly ash and glass bubble is increased, initial strength is lowered, but long-term strength development and durability are increased.

Instead of blast furnace slag, fly ash and glass bubbles, silica powder, silica fume and meta kaolin may also be used.

The blast furnace slag is preferably contained in an amount of 5 to 30% by weight with respect to the inorganic binder, and the fly ash is preferably contained in an amount of 0.1 to 20% by weight with respect to the inorganic binder, It is preferably contained in a proportion of 0.1 to 20% by weight based on the inorganic binder.

The calcium aluminate is used for initial strength development and prevention of shrinkage, and it tightens the structure to prevent cracking of the concrete and to prevent shrinkage of the concrete.

The calcium aluminate is preferably contained in an amount of 0.1 to 30% by weight based on the inorganic binder. If the content of calcium aluminate is less than 0.1% by weight, the effect of inhibiting the occurrence of strength and cracking is insufficient. If the content of calcium aluminate exceeds 30% by weight, good physical properties can be obtained due to quick curing property.

The anhydrous gypsum (CaSO ₄ ) reacts with the components in the cement, especially C3A (3CaO · Al ₂ O ₃ ) to produce etrinite (AFt phase, C3A · 3CaSO ₄ · 32H ₂ O) the Et teuneun Lin Xi is the amount is reduced or the part of the transition to the mono-sulfate (AFm _{phase, C3A · CaSO 4 · 12H 2} O) according to the hydration proceeds.

When a large amount of gypsum is added as in the present invention, etrinzite is sufficiently generated from the beginning to densify the structure of the cement, thereby increasing penetration resistance to chloride ions in the early age.

The anhydrous gypsum is preferably contained in an amount of 0.1 to 20% by weight based on the inorganic binder. If the content of the gypsum anhydride is less than 0.1% by weight, the initial formation of etchinite is reduced and the formation of dense texture is difficult. When the content of the gypsum is more than 20% by weight, good physical properties can be obtained due to quick curing properties Water resistance is poor.

The zeolite is used as a hygroscopic agent to absorb moisture of the polyol resin during fast curing and to prevent foaming. The zeolite is collectively referred to as minerals which are aluminum silicate hydrates of alkali and alkaline earth metals. The color is colorless transparent or white translucent.

The zeolite is also referred to as zeolite, and it has many kinds, but has a large amount of water content, crystal properties, and acidity. The zeolite has a hardness of not more than 6 and a specific gravity of about 2.2. It usually dissolves in hydrochloric acid and often becomes a glue, but a few kinds do not dissolve in hydrochloric acid. Major types of the zeolite include antimony, ophthalmic, chabazite, soda ash, heulandite, stilbite, lomonite, and enesite. These zeolites are produced in the cavity and heat of basic igneous rocks such as basalt and whistle tuff, and sometimes present as secondary minerals in granite and gneiss.

In addition, zeolite may be produced in gold ore or other veins. The zeolite has a crystal structure in which the bonding of each atom is loosened, and even when the water filling the space is released as a high heat, the skeleton remains, so that other fine particles can be adsorbed. Using this property, zeolite is used as an adsorbent and sometimes used as a molecular sieve to separate particulate matter of different sizes.

The zeolite is preferably contained in an amount of 0.1 to 20% by weight based on the inorganic binder. If the content of the zeolite is less than 0.1 wt%, the water effect decreases and the maintenance performance decreases. If the content exceeds 20 wt%, the maintenance performance is improved but the water-cement ratio is increased and the strength development is deteriorated.

The mica is in the form of a flake, and serves as a shield to prevent penetration of chlorine ions or water. It is preferable that the mica is contained in the inorganic binder in an amount of 0.1 to 20% by weight. If the content of the mica is less than 0.1% by weight, it is difficult to form a dense structure of the water-retaining cement mortar composition. When the content of the mica exceeds 20% by weight, the hydration reaction is lowered and the strength is lowered.

The water reducing agent reduces the water-cement ratio of the composition to improve strength and durability. Examples of the fluidizing agent include polycarboxylic acid type, melamine type, naphthalene type and the like. Melamine type or naphthalene type water reducing agents are less effective for improving strength and durability than polycarbonate type water reducing agents and have a water-cement ratio reducing effect And is poor in miscibility with the polymer.

Therefore, it is preferable to use a polycarboxylic acid-based water reducing agent for the water-retaining cement mortar composition according to the present invention. The water reducing agent is preferably contained in an amount of 0.1 to 5% by weight based on the inorganic binder.

The retarder is used for delaying rapid curing by gypsum to ensure workability for a certain period of time, and it is preferable to add 0.01 to 5% by weight to the inorganic binder. Examples of the delaying agent include generally known substances such as glucose, glucose, a sugar such as dextran, glucuronic acid, malic acid, citric acid, an acid such as citric acid or a salt thereof, an aminocarboxylic acid, A salt thereof, a phosphonic acid or a derivative thereof, and a polyhydric alcohol such as glycerin.

When the inorganic pigment is contained in an amount of 0.1 to 10% by weight relative to the inorganic binder, it is more preferable that the inorganic pigment can stably exhibit a desired color.

The inorganic pigment may be at least one of red iron oxide, yellow iron oxide, chromium oxide (Cr ₂ O ₃ ), purple iron oxide and black iron oxide (carbon black), whereby red, green, yellow, , And white.

The repair performance improving agent is used for improving the curing time, workability, durability, water retention and moisturizing property of the water-retaining cement mortar composition and is preferably at least one of polyacrylonitrile, sodium polyacrylate, acrylamide, ethylcellulose, Rosin and polyvinyl chloride, and may further include polyethylene oxide. The repair performance improving agent may further include a defoaming agent and a water reducing agent.

The polyacrylonitrile was excellent in water reducing effect, and a reactive special surfactant was added so that high performance performance, leveling ability, and anti-crake effect were satisfied. Particularly, the adhesive strength and the breaking strength after curing are excellent, and the strength of the cement is increased, thereby preventing detachment after bonding, and having excellent durability.

The polyacrylonitrile is preferably contained in an amount of 40 to 99 wt% with respect to the repair performance improving agent. If the content of the polyacrylonitrile is less than 40% by weight, the effect of improving the strength and endurance performance is insufficient. If the content exceeds 99% by weight, the performance is improved but the price competitiveness is lowered and the workability is lowered.

The sodium polyacrylate is used for strength improvement. The sodium polyacrylate is preferably contained in an amount of 0.1 to 20% by weight based on the repair performance improving agent.

If the content of the sodium polyacrylate is less than 0.1% by weight, the viscosity is lowered and the workability is good, but the effect of strength development is deteriorated. When the content is more than 20% by weight, the effect of strength development is excellent but the viscosity is increased.

The acrylamide is used to enhance wet strength and abrasion resistance, and it is preferable that the acrylamide is contained in an amount of 0.1 to 20% by weight based on the repair performance improving agent.

When the content of the acrylamide is less than 0.1 wt%, the initial workability is improved but the effect of improving the abrasion resistance is weak. When the content of the acrylamide is more than 20 wt%, the wet strength and the abrasion resistance are improved, You may lose your sex.

The ethylcellulose is used to improve viscosity and water retention of the polymer. The ethylcellulose is preferably contained in an amount of 0.1 to 20% by weight based on the repairability improving agent. When the content of ethylcellulose is less than 0.1 wt%, the effect of improving the maintenance performance is insufficient. When the content of ethylcellulose is more than 20 wt%, the maintenance performance is improved but the initial workability may be lowered .

The carboxymethyl cellulose is used to improve the finishing workability by improving the viscosity. The carboxymethyl cellulose is preferably contained in an amount of 0.1 to 10% by weight based on the repairing performance improving agent.

If the content of carboxymethyl cellulose is less than 0.1% by weight, the effect of improving finishing workability may be insignificant. If the content of carboxymethyl cellulose is more than 10% by weight, the finish workability may be improved but the strength and durability may be lowered .

The polyvinyl chloride is used to improve the bonding strength and endurance performance. The polyvinyl chloride is preferably contained in an amount of 0.1 to 10% by weight based on the repair performance improving agent. If the content of the polyvinyl chloride is less than 0.1% by weight, the effect of improving the bonding strength and endurance performance may be insignificant. If the content of the polyvinyl chloride exceeds 10% by weight, the bonding strength and endurance performance are improved but the price competitiveness is lowered .

The repair performance improving agent is preferably polyethylene oxide to improve water retention and moisture retention.

When the polyethylene oxide is included, the viscosity of the composition is increased, so that the workability is improved. At the same time, absorption of water is promoted, and water retention and moisturizing properties are improved. The polyethylene oxide is preferably contained in an amount of 0.1 to 15% by weight based on the repair performance improving agent.

If the content of the polyethylene oxide exceeds 15% by weight, the water retention and moisturizing properties of the water-retaining cement mortar composition are improved, but the stability is lowered to deteriorate the early strength development of the water-retaining cement mortar composition. If the content is less than 0.1% The mortar composition has insufficient water retention and moisturizing effect.

The repair performance improving agent is preferably contained in an amount of 0.01 to 20% by weight based on the weight of the inorganic binder. If the content of the repairing performance improving agent exceeds 20% by weight, the viscosity becomes too high, and the workability (slump) is lowered, the hydration reaction is delayed and the early strength development is lowered and the price competitiveness is lowered. If it is less than 0.01% by weight, satisfactory durability is hardly expected, and water retention and moisturizing properties are weak.

The antifoaming agent is used to remove the pores in the mortar to increase the strength and durability of the mortar. Examples of the antifoaming agent include an alcohol type antifoaming agent, a silicone type antifoaming agent, a fatty acid type antifoaming agent, an oil type antifoaming agent, an ester type antifoaming agent and an oxyalkylene type antifoaming agent .

It is preferable that the defoaming agent is added in an amount of 0.1 to 5 wt% with respect to the repair performance improving agent.

Examples of the silicone defoaming agent include dimethyl silicone oil, polyorganosiloxane, and fluorosilicone oil. Examples of the fatty acid defoaming agent include stearic acid and oleic acid.

Examples of the oil-based antifoaming agents include kerosene, animal and vegetable oil, castor oil, and the ester-based antifoaming agents include solitol trioleate and glycerol monoricinolate.

Examples of the oxyalkylene antifoaming agents include polyoxyalkylene, acetylene ethers, polyoxyalkylene diisocyanate esters, and polyoxyalkylene alkylamines. Examples of the alcohol type antifoaming agent include glycol.

The water reducing agent is used to improve the strength and durability by reducing the water-cement ratio of the composition.

Examples of the water reducing agent include a polycarboxylic acid type, a melamine type, and a naphthalene type. The melamine type or naphthalene type water reducing agent is less effective for improving the strength and durability than the polycarboxylic acid type water reducing agent and has a small water- And has a disadvantage of poor compatibility with the repair performance improving agent. Therefore, it is preferable to use a polycarboxylic acid-based water reducing agent.

The present invention provides a method for producing the water-retaining cement mortar composition, which comprises stirring the inorganic binder and the fine aggregate in a forced mixer; And water, and a repairing performance improving agent, and stirring the mixture for 1.5 to 3 minutes. The present invention also provides a method for producing a water-retaining cement mortar composition.

Hereinafter, an environmentally-preserved vegetation parking block using the water-retaining cement mortar composition according to a preferred embodiment of the present invention and a method of manufacturing the park-type vegetation parking block will be described.

Hereinafter, the structure of the vegetation parking block manufactured using the water-retaining cement mortar composition according to the present invention will be described with reference to FIGS. 1 to 4. FIG.

The vegetation parking block 100 includes a block body 10, a parking guide rib 20 protruding upward along the upper edge of the block body 10, a plurality of A vegetation part separating wall 40 formed between the vegetation part 30 and a plurality of vegetation parts 30 and a drain hole (not shown) formed vertically through the block body 10 from the lower ends of the plurality of vegetation parts 30 50).

The block body 10 entirely comprises the water-retaining cement mortar composition described above. The block body 10 may have a chamfer 12 formed at its corner portion.

The block body 10 has a side surface in a stepped manner. That is, the block body 10 may have a structure in which a step is formed in a step-like shape from the upper edge to the lower edge. In the case where a plurality of block bodies 10 are arranged side by side under the above-described structure, a separate drainage groove may be formed between the plurality of block bodies 10.

The parking guide rib 20 is a sidewall structure protruding from the upper end of the block body 10 to facilitate identification when a plurality of block bodies 10 are installed and to park the vehicle on the vegetation parking block 100 The parking guide ribs 20 are positioned between the two wheels of the vehicle. In other words, the parking guide rib 20 is colored in a different color that distinguishes the upper end from the surroundings, so that it is possible to conveniently perform the parking guide rib 20 in accordance with the compartment when the driver of the vehicle carries the parking.

On the other hand, the parking guide rib 20 is formed with a curved portion 22 protruding inward from a central portion of each side wall. A rib groove 24 may be formed in the parking guide rib 20 in a direction crossing the side wall.

The vegetation part 30 is an area in which plants such as lawns are located inside the parking guide rib 20, and the side walls thereof may be inclined inwardly from the upper part to the lower part. The vegetation part 30 may be arranged with a plurality of matrices arranged in a predetermined matrix, for example, 2x2. The vegetation part 30 functions to store the water to regulate the temperature of the ground while accelerating plant growth.

The vegetation part separating wall 40 serves as a breaking preventive isolation rib between a plurality of vegetation parts 30 and includes a lateral partition wall 41 formed along the lateral direction of the block body 10, And a vertical separating wall 43 formed along the longitudinal direction of the vertical separating wall 43.

The drain hole 50 serves as a passage for allowing the water stored on the vegetation part 30 to flow to the flow path forming block 1 arranged in the lower direction of the vegetation parking block 100, A mesh of a predetermined shape capable of adjusting the speed can be disposed.

Referring to FIG. 4, an installation example of a vegetation parking system including a vegetation parking block according to the present invention is as follows. A hollow reservoir block 200 is disposed between the plurality of vegetation parking blocks 100 and a flow path forming block 1 is disposed below each vegetation parking block 100. That is, the water discharged from the vegetation part 30 of the plurality of vegetation parking blocks 100 flows to the water storage block 200 along a flow pipe (not shown) formed in the flow path forming block 1. In addition, the water reservoir block 200 includes a block cover 210 that closes an open portion of the upper end thereof, and the block cover 210 is formed such that the height of the upper end thereof corresponds to the height of the upper end of the vegetation parking block 100 .

A method of manufacturing a park type vegetation parking block according to the present invention is characterized in that a space for storing water is secured and a water mold or a rain tank is moved to a storage tank, Casting a cement mortar composition, vibrating and compressing the poured composition, and surface finishing and curing the molded product.

A construction method of an environmentally-preserved vegetation parking block according to a preferred embodiment of the present invention will be described.

The method of constructing the park type vegetation parking block comprises the steps of installing the permeable sheet continuously in the longitudinal direction or the transverse direction after finishing the hearth according to the compaction degree, installing and arranging the support stabilizing layer, The method comprising the steps of installing the environmentally-friendly storage type vegetation parking block, placing a joint material on the upper part of the installed block and compaction, and cleaning the remaining joint material on the upper part of the block.

At this time, when water or storm water is stored after compiling the hearth, a square manhole or a circular manhole is connected to the bottom of the block bottom so that water or stormwater can be stored and pumped to be sprayed or reused The bottom of the block may be provided with an excellent storage tank.

Hereinafter, examples and test examples for demonstrating the superiority of the properties of the composition according to the present invention will be described.

≪ Example 1 >

The inorganic binder and the fine aggregate were mixed in a weight ratio of 1: 1 and stirred in a forced mixer. The inorganic binder was mixed with 10% by weight of water and 10% by weight of a repairing agent.

The inorganic binder is usually 43 weight% of Portland cement, 20 weight% of blast furnace slag, 10 weight% of calcium aluminate, 5 weight% of anhydrous gypsum, 5 weight% of fly ash, 5 weight% of glass bubble, 5 weight% of zeolite, %, A water reducing agent 1% by weight, a pigment 0.5% by weight and a retarding agent 0.5% by weight.

 The repairing performance improving agent is composed of 92 wt% of polyacrylonitrile, 1 wt% of sodium polyacrylate, 1 wt% of acrylamide, 1 wt% of ethylcellulose, 1 wt% of carboxymethylcellulose, 1 wt% of polyvinyl chloride, 2% by weight of polyethylene oxide, 0.5% by weight of a defoaming agent and 0.5% by weight of a water reducing agent.

The fine aggregate used was a mixture of silica sand and bottom ash at a weight ratio of 1: 0.4.

≪ Example 2 >

The inorganic binder and the fine aggregate were mixed in a weight ratio of 1: 1 and stirred in a forced mixer. The inorganic binder was mixed with 10% by weight of water and 10% by weight of a repairing agent.

The inorganic binder is usually 43 weight% of Portland cement, 20 weight% of blast furnace slag, 10 weight% of calcium aluminate, 5 weight% of anhydrous gypsum, 5 weight% of fly ash, 5 weight% of glass bubble, 5 weight% of zeolite, %, A water reducing agent 1% by weight, a pigment 0.5% by weight and a retarding agent 0.5% by weight.

 The repair performance improving agent was prepared by mixing 86 wt% of polyacrylonitrile, 2 wt% of sodium polyacrylate, 2 wt% of acrylamide, 2 wt% of ethylcellulose, 2 wt% of carboxymethylcellulose, 2 wt% 2% by weight of polyethylene oxide, 0.5% by weight of a defoaming agent and 0.5% by weight of a water reducing agent.

The fine aggregate used was a mixture of silica sand and bottom ash at a weight ratio of 1: 0.4.

≪ Example 3 >

The inorganic binder and the fine aggregate were mixed in a weight ratio of 1: 1 and stirred in a forced mixer. The inorganic binder was mixed with 10% by weight of water and 10% by weight of a repairing agent.

The inorganic binder is usually 43 weight% of Portland cement, 20 weight% of blast furnace slag, 10 weight% of calcium aluminate, 5 weight% of anhydrous gypsum, 5 weight% of fly ash, 5 weight% of glass bubble, 5 weight% of zeolite, %, A water reducing agent 1% by weight, a pigment 0.5% by weight and a retarding agent 0.5% by weight.

 The maintenance performance improving agent was prepared by mixing 80 wt% of polyacrylonitrile, 3 wt% of sodium polyacrylate, 3 wt% of acrylamide, 3 wt% of ethylcellulose, 3 wt% of carboxymethylcellulose, 3 wt% 4% by weight of polyethylene oxide, 0.5% by weight of a defoaming agent and 0.5% by weight of a water reducing agent.

The fine aggregate used was a mixture of silica sand and bottom ash at a weight ratio of 1: 0.4.

In order to compare the physical properties of Examples 1 to 3 according to the present invention, generally used Portland cement concrete compositions and polymer cement concrete compositions that are widely used at present are shown as Comparative Examples 1 and 2.

≪ Comparative Example 1 &

The mixture was stirred in a forced mixer at a weight ratio of Portland cement and fine aggregate of 1: 1, and 20 wt% of water was usually added to the pottail cement and stirred to prepare a cement mortar composition.

≪ Comparative Example 2 &

The mixture was stirred in a forced mixer at a weight ratio of Portland cement to fine aggregate of 1: 1 and stirred. Then, 10 wt% of water and 10 wt% of polyacrylonitrile were further mixed and stirred for 2 minutes to prepare a polymer cement mortar composition .

Hereinafter, test results for comparing and evaluating the physical properties of Examples 1 to 3 and Comparative Examples 1 and 2 according to the present invention will be described.

≪ Test Example 1 >

Table 1 shows the results of testing the strengths of Examples 1 to 3 and Comparative Examples 1 and 2 according to the present invention.

Tests were conducted according to the standards of KS F 2405 and KS F 2408, respectively.

division Young Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Bending strength (kgf / cm ² ) 1 day 71 75 78 35 47 7 days 99 103 110 48 68 28th 115 125 132 59 95 Compressive strength (kgf / cm ² ) 1 day 359 366 380 288 290 7 days 405 425 440 355 365 28th 490 515 535 445 456

As shown in Table 1, the flexural and compressive strengths of the compositions (Examples 1, 2, and 3) produced by the present invention were significantly higher than those of the cement mortar compositions of Comparative Examples 1 and 2.

That is, it was confirmed that the water-retaining cement mortar composition prepared according to the present invention is far superior in strength to the cement mortar composition prepared by the comparative example.

≪ Test Example 2 &

The shrinkage ratio of the cement mortar composition prepared in Examples 1 to 3 according to the present invention and Comparative Example 1 and Comparative Example 2 was measured by KS F 2424 (length change test method for concrete) Are shown in Table 2 below.

division Example 1 Example 2  Example 3 Comparative Example 1 Comparative Example 2 Dry shrinkage (%) 0.05 0.04 0.03 0.12 0.09

As shown in Table 2, it was confirmed that Examples 1 to 3 according to the present invention had shrinkage reduction effect by reducing the amount of drying shrinkage as compared with Comparative Example 1 and Comparative Example 2.

≪ Test Example 3 >

Table 3 shows the results of the measurement of the freeze-thaw resistance test according to the method specified in KS F 2456 for the cement mortar composition prepared according to the compositions of Examples 1 to 3 and Comparative Example 1 and Comparative Example 2 of the present invention .

Freezing and thawing means that the water absorbed in the concrete is frozen and melted. When freezing and thawing is repeated, fine cracks are generated in the concrete structure and the durability is lowered.

Table 3 shows durability indices of the respective examples and comparative examples according to the freeze-thaw resistance test.

division Example 1 Example 2  Example 3 Comparative Example 1 Comparative Example 2 Durability index 92 93 94 65 89

As shown in Table 3, the durability of Examples 1 to 3 according to the present invention is improved because the durability index is much higher than that of Comparative Example 1 and Comparative Example 2.

<Test Example 4>

The water-retaining cement mortar composition prepared according to Examples 1 to 3 and the cement mortar composition prepared according to Comparative Example 1 and Comparative Example 2 were tested by JIS A 1171 (Test Method for Polymer Cement Mortar) The results are shown in Table 4 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Chloride ion penetration depth (mm) 0.9 0.7 0.6 3.3 1.5

As shown in Table 4 above, the water-retaining cement mortar composition prepared according to Examples 1 to 3 has a lower chloride ion penetration depth than the cement mortar composition prepared according to Comparative Example 1 and Comparative Example 2, And the resistance was high.

&Lt; Test Example 5 >

The water-retaining cement mortar composition prepared according to Examples 1 to 3 and the cement mortar composition prepared according to Comparative Example 1 and Comparative Example 2 were measured according to the method specified by the Japan Interlocking Block Packaging Technology Association The results are shown in Table 5 below. The higher the water retention, the lower the temperature rise on the road surface, and the heat island phenomenon is alleviated. This is similar to the effect of sprinkling water in the summer and cooling the surroundings using the heat of vaporization of the water.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Coefficient (g / cm ³ ) 0.18 0.22 0.25 0.03 0.10

As shown in Table 5 above, the compositions prepared according to Examples 1 to 3 were higher than those prepared according to Comparative Example 1 and Comparative Example 3.

&Lt; Test Example 6 >

In order to confirm the permeability of the composition according to the present invention, concrete specimens of 10 x 10 cm were prepared from the compositions of Examples 1 to 3 and Comparative Examples 1 and 2, and KS F 2322 Method), the permeability coefficient was measured at 28 days of age and the results are shown in Table 6 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Permeability Coefficient (cm / sec) 0.31 0.33 0.35 0.02 0.15

As shown in Table 6, it can be seen that Examples 1 to 3 according to the present invention have a much higher coefficient of permeability than Comparative Examples 1 and 2.

&Lt; Test Example 7 >

In order to compare the slip resistance of the composition prepared according to the present invention with the composition prepared in the comparative example, ASTM E303 (Method for measuring surface friction characteristics), AASHTO T 278 (British pendulum tester), and the results are shown in Table 7 below. &lt; tb &gt;&lt; TABLE &gt;

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Slip resistance (BPN) 58 60 61 54 56

As shown in Table 7, it was confirmed that the compositions prepared according to Examples 1 to 3 of the present invention had higher slip resistance than the compositions prepared according to Comparative Examples 1 and 2. It can be seen that when the vehicle is packed on the road, the braking performance of the vehicle is excellent and the accident rate can be lowered.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It is clear that the present invention can be suitably modified and applied in the same manner. Therefore, the above description does not limit the scope of the present invention, which is determined by the limitations of the utility model registration claims.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

Claims (12)

Repair performance improving agents including polyacrylonitrile, sodium polyacrylate, acrylamide, ethylcellulose, carboxymethylcellulose and polyvinyl chloride;
Inorganic binders;
Fine aggregate; And
Water;
Wherein the inorganic binder comprises 30 to 90 wt% of Portland cement, 5 to 30 wt% of blast furnace slag, 0.1 to 30 wt% of calcium aluminate, 0.1 to 20 wt% of anhydrous gypsum, 0.1 to 20 wt% of fly ash, 0.1 to 20% by weight of zeolite, 0.1 to 20% by weight of mica, 0.1 to 5% by weight of water reducing agent, 0.5% by weight of pigment and 0.5% by weight of retarding agent,
Wherein the repair performance improving agent is selected from the group consisting of 40 to 99 wt% of polyacrylonitrile, 0.1 to 20 wt% of sodium polyacrylate, 0.1 to 20 wt% of acrylamide, 0.1 to 20 wt% of ethylcellulose, 0.1 to 10 wt% of carboxymethylcellulose 0.1 to 10% by weight of polyvinyl chloride, 0.01 to 15% by weight of polyethylene oxide, 0.1 to 5% by weight of an antifoaming agent and 0.1 to 5% by weight of a water reducing agent,
The repair performance improving agent is incorporated in an amount of 0.01 to 20% by weight based on the inorganic binder,
The fine aggregate used was a mixture of silica sand and bottom ash at a weight ratio of 1: 0.4,
A water - retaining cement mortar composition.
The method according to claim 1,
Wherein the weight ratio of the inorganic binder to the fine aggregate is in the range of 1: 0.1 to 1: 4, and the silica sand is selected from the group consisting of No. 1 to No. 6,
A water - retaining cement mortar composition.
The method according to claim 1,
Wherein the water is mixed with 5 to 50% by weight of the inorganic binder,
A water - retaining cement mortar composition.
delete delete The method according to claim 1,
Wherein the pigment comprises at least one of red iron oxide, yellow iron oxide, chromium oxide (Cr ₂ O ₃ ), purple iron oxide and black iron oxide.
A water - retaining cement mortar composition.
delete delete delete A method for manufacturing a water-retaining cement mortar composition according to any one of claims 1 to 3 and 6,
Stirring the inorganic binder and the fine aggregate into a forced mixer; And
Mixing the water and the repairing performance improving agent, and stirring the mixture for 1.5 to 3 minutes.
A method for producing a waterborne cement mortar composition.
A vegetation parking block (100) comprising a water-retaining cement mortar composition according to any one of claims 1 to 6,
A block body (10) made of the composition;
A parking guide rib (20) protruded upward along the upper edge of the block body (10);
A plurality of vegetation portions 30 having a shape of a predetermined distance from the upper end of the block body 10;
A vegetation part separation wall (40) formed between the plurality of vegetation parts (30);
And a drain hole (50) formed vertically through the block body (10) from a lower end of the plurality of vegetation parts (30)
Vegetation parking block.
A vegetation parking system comprising a vegetation parking block (100) according to claim 11,
The vegetation parking system comprises:
A hollow reservoir block (200) disposed between the plurality of vegetation parking blocks (100); And
And a flow path forming block (1) disposed under each of the vegetation parking blocks (100)
The water discharged from the vegetation part (30) of the plurality of vegetation parking blocks (100) flows to the water storage block (200) along a flow pipe formed in the flow path forming block (1)
Vegetation parking system.

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