KR101014171B1 - Water retainable and permeable cement mortar composite, manufacturing method of boundary block using the same and boundary block manufactured by the method - Google Patents

Abstract

PURPOSE: A water retainable and permeable cement mortar composition is provided to improve repair capability using bottom ash and to lower a ratio of water to cement by adding a special admixture. CONSTITUTION: A water retainable and permeable cement mortar composition includes 0.1-10 weight% of special admixture, 5-25 weight% of inorganic binding material, 25-55 weight% of fine aggregate, 15-40 weight% of coarse aggregate, and 0.56 weight% of water. The special admixture includes a methyl methacrylate resin. The inorganic binding material comprises bottom ash.

Description

Water-retainable and permeable cement mortar composite, manufacturing method of boundary block using the same and boundary block manufactured by the method

The present invention relates to a cement mortar composition, a boundary stone block using the same, and a method for manufacturing the same, and more particularly, by mixing a special admixture to lower water-cement ratio, thereby improving warpage, tension, adhesion strength, and durability, and industrial waste. Bottom ash, which has high water content and high water content, improves repair capacity and is useful in recycling industrial wastes, and effectively reduces water / cement (W / C) ratio even by adding a small amount of polymer. It relates to a water-permeable cement mortar composition, a method for producing a boundary stone block using the same, and a boundary stone block mortar composition prepared by the method and a boundary stone block using the same.

Currently, the boundary stones that separate roads and sidewalks that are widely used can be roughly classified into cement concrete boundary stones and stone boundary stones.

Cement concrete boundary stone has the advantage of greatly reducing the manufacturing cost compared to the stone boundary stone block because it is easy to purchase and manufacture the material, but also has a lot of problems during transportation or installation work because of its high weight.

Moreover, the cement concrete boundary stone has poor corrosion resistance, which is easily corroded and weakened when exposed to harmful gases such as carbon monoxide in the atmosphere. The absorption rate is very high. This radicalization lowers the strength, and especially during winter, cracks or breaks are frequently caused by freeze-thawing action.

Such broken boundary stone not only takes excessive cost for replacement construction but also has problems such as causing traffic disturbance and inconvenience for pedestrians during replacement construction.

In addition, the cement concrete boundary stone takes a long time curing time for high strength due to the curing characteristics, there is also a problem that lowers the productivity of the rotation efficiency of the formwork used in manufacturing.

The stone boundary stone is manufactured by using natural stone such as granite, so it has a beautiful appearance and a large decorative effect.However, the material cost and processing cost are high, and the production cost is much higher than that of cement concrete boundary stone. The work efficiency during construction is low, the risk of safety accidents for workers exists, and the strength is very weak compared to the weight, so it is easy to be damaged even by the slight impact due to the carelessness of the workers during transportation. This easily damaged, there is a problem that hurts the urban aesthetics.

The present invention has been derived to solve the above problems, by mixing a special admixture to lower the water-cement ratio to improve the bending, tensile, adhesion strength and durability performance, industrial waste and high water content of the material itself bottom The use of ash improves repair capacity and is useful in recycling industrial wastes, and the addition of a small amount of polymer effectively reduces water / cement (W / C) ratio, resulting in much higher strength and durability than conventional cement mortar compositions. It is to provide a water-permeable cement mortar composition, a method for producing a boundary stone block using the same, and a boundary stone block produced by the method.

The present invention, 0.1 to 10% by weight of special admixture, 5 to 25% by weight of inorganic binder, 25 to 55% by weight of fine aggregate, 15 to 40% by weight of coarse aggregate and 0.5 to 6% by weight of water, Methyl methacrylate resin, the inorganic binder provides a water-permeable cement mortar composition comprising a bottom ash.

The special admixture may further include butyl acrylate resin, polyacrylic ester and methyl cellulose.

The methyl methacrylate is contained 15 to 70% by weight based on the special admixture, the butyl acrylate resin is contained 5 to 50% by weight relative to the special admixture, 1 to 30% by weight based on the polyacrylic ester special admixture The methyl cellulose is preferably contained 1 to 20% by weight based on the special admixture.

The inorganic binder may include 10 to 70% by weight of cement, 20 to 80% by weight of bottom ash, 1 to 20% by weight of fly ash, and 0.5 to 10% by weight of gypsum.

The cement mortar composition may further include 0.5 to 7 wt% of inorganic pigments based on the cement mortar composition, and the inorganic pigments may include titanium oxide, red iron oxide, yellow iron oxide, chromium oxide (CrO ₃ ), purple iron oxide, and black iron oxide. It is preferably made of one or more materials selected from among.

The cement mortar composition may further include a water reducing agent, and the water reducing agent may be contained in an amount of 0.01 to 1 wt% based on the cement mortar composition.

In addition, the present invention, the step of assembling the formwork to form a boundary stone on the upper side of the ground, the step of pouring the permeable cement mortar composition on the form, and curing the poured water-permeable cement mortar composition And demolding the formwork from the cured composition to form a boundary stone block.

In addition, the present invention, the step of assembling the formwork of the boundary stone block, the step of mounting the assembled form to the centrifugal force compactor or vibration compactor, the step of pouring the permeable cement mortar composition on the formwork, It provides a method of manufacturing a boundary stone block comprising the step of curing the water-permeable cement mortar composition and demolding the cured water-permeable cement mortar composition in a formwork.

In addition, the present invention is manufactured by the method of manufacturing the boundary stone block, the groove is formed in the longitudinal direction on the upper surface of the boundary stone block and the nighttime visibility is ensured by the luminous material is applied to the groove or the luminous body is inserted to form the luminous unit Provide a block.

According to the present invention, by mixing a special admixture to lower the water-cement ratio it is possible to improve the warpage, tensile, adhesion strength and durability of the composition.

The use of bottom ash, which is industrial waste and has a high water content of the material itself, improves the repair capacity and is useful in recycling industrial waste. By using special admixtures, the curing time, workability, ductility and repair capacity of the composition can be improved. .

By using bottom ash having a high moisture content of the material itself, even a small amount of polymer can effectively reduce the water / cement (W / C) ratio, thereby exhibiting a much higher strength and durability improvement effect than conventional cement mortar compositions.

In addition, since the bottom ash, which is an industrial waste, can be used as a substitute for cement, the material cost can be reduced.

1 is a perspective view showing an example of a boundary stone block according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail. However, the following embodiments are provided to those skilled in the art to fully understand the present invention, and may be modified in various forms, and the scope of the present invention is limited to the embodiments described below. It doesn't happen.

The water-permeable cement mortar composition according to a preferred embodiment of the present invention includes a special admixture, an inorganic binder, a fine aggregate, a coarse aggregate, and water, and the special admixture contains 0.1 to 10% by weight based on the water-permeable cement mortar composition. The inorganic binder is contained 5 to 25% by weight based on the water-permeable cement mortar composition, the fine aggregate is contained by 25 to 55% by weight relative to the water-permeable cement mortar composition, the coarse aggregate is water-permeable cement It is preferable to contain 15-40 weight% with respect to a mortar composition, and 0.5 to 6 weight% of water with respect to a water permeable cement mortar composition is preferable. The water permeability is used as a meaning having both water retention and water permeability. The water-permeable cement mortar composition according to a preferred embodiment of the present invention is a composition used to prepare a boundary stone or a boundary stone block.

Aggregates are divided into fine aggregates and coarse aggregates, and those having a particle diameter of 5 mm or less are called fine aggregates and those having a particle size larger than 5 mm are classified as coarse aggregates. The fine aggregate is preferably contained in an amount of 25 to 55% by weight based on the water-permeable cement mortar composition, and the coarse aggregate is preferably contained in an amount of 15 to 40% by weight based on the water-permeable cement mortar composition.

The special admixture is to have physical properties that can improve the curing time, workability, ductility and water-retaining ability of the cement mortar composition. The special admixture according to the preferred embodiment of the present invention includes methyl methacrylate resin, and may further include butyl acrylate resin, polyacrylic ester, and methyl cellulose. When the special admixture further comprises butyl acrylate resin, polyacrylic ester and methyl cellulose, the methyl methacrylate resin is preferably contained 15 to 70% by weight based on the special admixture, and the butyl acrylate resin Is preferably contained 5 to 50% by weight based on the special admixture, the polyacrylic ester is preferably contained 1 to 30% by weight based on the special admixture, the methyl cellulose is 1 to 20% by weight based on the special admixture It is preferable to contain%.

The methyl methacrylate (hereinafter, referred to as 'MMA') resin has excellent weather resistance, which is resistant to weather and climate, such as sunlight, thereby inhibiting corrosion due to external environmental changes (weather and climate change). At the same time, it is added to improve adhesion strength and toughness by infiltrating and integrating into the cement mortar boundary stone and improving colorability by pigments. MMA resin is a colorless transparent liquid, which is prepared by oxidizing tert-butyl alcohol (TBA) prepared from C4 oil as a raw material in a gaseous state to prepare methacrylic acid, and then esterifying it with methanol. . MMA resin is used in many fields because of its excellent transparency, weather resistance and colorability. Polymeric materials have different properties depending on their molecular weight, but MMA is a hard type and flexible, and the radical polymerization at low temperature increases the proportion of syndiotactic structure in which the polymer chain structure shows continuous regularity. Indicates. Generally, acrylic resins have a high coefficient of thermal expansion, but MMA resins have a very high stability.

When the special admixture further comprises butyl acrylate resin, polyacrylic ester and methyl cellulose, the MMA resin is preferably 15 to 70% by weight relative to the special admixture, the content of the MMA resin is 70 weight When the percentage is higher, the viscosity of the cement mortar composition is lowered, so that material separation occurs. When the content of the MMA resin is less than 15% by weight, the workability and strength of the boundary stone of the cement mortar composition are lowered.

The butyl acrylate resin is used to lower the viscosity of the cement mortar composition to maintain workability as well as to improve the ductility properties. The butyl acrylate resin is preferably mixed 5 to 50% by weight with respect to the special admixture, when the content of the butyl acrylate resin exceeds 50% by weight of the cement mortar composition is lowered the material separation of the composition occurs and the initial If the strength is lowered and the content of the butyl acrylate resin is less than 5% by weight, the workability of the cement mortar composition is improved, but the strength of the boundary stone is lowered.

The polyacrylic ester is used to improve the durability of the cement mortar composition. It is preferable that 1 to 30% by weight of the polyacrylic ester is mixed with respect to the special admixture. When the content of the polyacrylic ester exceeds 30% by weight, the viscosity of the cement mortar composition decreases, so that the material separation of the composition occurs and the initial strength decreases. If the content of the polyacrylic ester is less than 1% by weight, the workability of the cement mortar composition is improved, but the durability of the boundary stone is lowered.

The methyl cellulose has a fast absorption rate and does not gel when absorbed by water. A special admixture containing methyl cellulose is incorporated in the preparation of a cement mortar composition to produce a water (W) -cement ratio (C) (W / C ratio) to increase the strength of the cement mortar boundary stone. The methyl cellulose is preferably mixed with 1 to 20% by weight relative to the special admixture, when the content of the methyl cellulose exceeds 20% by weight, the water-retaining ability of the boundary stone is improved, but the viscosity is high, the workability is lowered. When the initial strength expression is lowered and the content of methylcellulose is less than 1% by weight, the workability of the cement mortar composition and the strength of the boundary stone are excellent, but the water-retaining ability is lowered.

The special admixture is preferably contained 0.1 to 10% by weight based on the water-permeable cement mortar composition, and when the content of the special admixture exceeds 10% by weight based on the cement mortar composition, the viscosity of the cement mortar composition is increased to improve workability ( Slump) drops, delays the hydration reaction, lowers premature compressive strength and lowers price competitiveness. If the content of the special admixture is less than 0.1% by weight relative to the cement mortar composition, the water retaining capacity, strength and durability of the boundary stone is lowered.

The inorganic binder may include 10 to 70% by weight of cement, 20 to 80% by weight of bottom ash, 1 to 20% by weight of fly ash, and 0.5 to 10% by weight of gypsum.

The cement can usually use portland cement, it is usually preferred to use the portland cement specified in KS.

The bottom ash and fly ash are used to improve latent hydraulic properties, long-term strength and durability, but the initial strength decreases with increasing weight ratio, but long-term strength and durability increase.

The bottom ash is a material generated from a thermal power plant and has potential hydraulic properties as industrial waste, but the water resistance is small due to high water content of the material itself. The bottom ash is preferably contained 20 to 80% by weight based on the inorganic binder. When the content of the bottom ash is less than 20% by weight, the initial strength of the composition is expressed, but the long-term strength and durability may be reduced, and when the content of the bottom ash exceeds 80% by weight, the workability and long-term strength of the composition are improved. However, it may delay the development of initial intensity.

The fly ash is used to enhance latent hydraulic properties, long-term strength development and durability. Increasing the weight ratio of fly ash lowers initial strength, but increases long-term strength development and durability. Instead of fly ash, blast furnace slag, silica powder and silica fume may be used. The fly ash is preferably contained 1 to 20% by weight based on the inorganic binder. When the content of the fly ash is less than 1% by weight, the initial strength of the composition may be expressed, but the long-term strength and durability may be reduced. When the content of the fly ash is more than 20% by weight, the workability and long-term strength of the composition may be improved. However, it may delay the development of initial intensity.

The gypsum is used for initial strength development. Gypsum may use anhydrous gypsum or dihydrate gypsum. If the content of gypsum is increased, it shows fast curing property. If the content is less than 0.5% by weight, the initial strength improvement effect of the boundary stone is insignificant, and if it is more than 10% by weight, good properties can be obtained due to the fast curing property. The castle is degraded.

The inorganic binder is preferably contained 5 to 25% by weight based on the water-permeable cement mortar composition, the workability, strength and durability is improved when the content of the inorganic binder exceeds 25% by weight relative to the cement mortar composition However, the dry shrinkage and economic efficiency may be lowered, and when the content of the inorganic binder is less than 5% by weight relative to the cement mortar composition, the dry shrinkage may be less, but the strength and durability may be lowered.

Cement mortar composition of the present invention may further comprise 0.01 to 1% by weight of a reducing agent. The water reducing agent reduces the water-cement ratio of the cement mortar composition to improve strength and durability. Examples of the water reducing agent include polycarboxylic acid, melamine, and naphthalene. Melamine or polycarboxylic acid-based water reducing agents are less effective in improving strength and durability than naphthalene water reducing agents. There is a disadvantage in that miscibility with special admixtures is poor. Therefore, it is preferable to use a naphthalene type water reducing agent for the cement mortar composition which concerns on this invention.

Cement mortar composition of the present invention may further comprise 0.5 to 7% by weight of inorganic pigments. When it contains an inorganic pigment, it is more preferable at the point which can express a desired color stably. The inorganic pigment may be one or more materials selected from titanium oxide, red iron oxide, yellow iron oxide, chromium oxide (Cr ₂ O ₃ ), purple iron oxide, and black iron oxide (carbon black), whereby red, green, and yellow colors may be used. Various colors such as black, blue and white can be realized.

The water-permeable cement mortar composition according to a preferred embodiment of the present invention can be prepared by the following method.

Inorganic binders, fine aggregates and coarse aggregates are mixed in a proportion and stirred in a forced mixer. The inorganic binder is mixed to contain 5 to 25% by weight relative to the water-permeable cement mortar composition, the fine aggregate is mixed to contain 25 to 55% by weight relative to the water-permeable cement mortar composition, the coarse aggregate is water-permeable It is preferable to mix 15-40 weight% with respect to the cement cement mortar composition.

The mixture of inorganic binder, fine aggregate and coarse aggregate is additionally mixed with water and special admixture at a predetermined ratio and stirred for 1 to 10 minutes. The special admixture is mixed so as to contain 0.1 to 10% by weight based on the water-permeable cement mortar composition, water is preferably mixed so as to contain 0.5 to 6% by weight relative to the water-permeable cement mortar composition.

Hereinafter, a method of manufacturing a boundary stone block using a water-permeable cement mortar composition according to a preferred embodiment of the present invention will be described.

Assemble the formwork to form the boundary stone on the upper side of the ground according to the use.

Prior to the formwork, the above-mentioned water-permeable cement mortar composition is poured. By forming the above-mentioned cement mortar composition by the formwork, a boundary stone block can be formed, which can easily pass moisture into the basement and contain a certain amount of moisture for a long time, and is maintained by the heat of vaporization of the repaired moisture. There is an effect that the temperature of the road and surroundings can be lowered.

The poured permeable cement mortar composition is cured.

The formwork is demolded in the cured composition to form boundary stone blocks.

Furthermore, as shown in FIG. 1, a groove may be formed in a longitudinal direction on the upper surface of the boundary stone block 100, and a luminous unit 10 may be formed by applying a luminous material to the groove or inserting a luminous body. As such, when the luminous unit 10 is formed, night visibility may be secured, thereby contributing to the prevention of night traffic accidents.

As described above, the boundary stone block may be formed by pouring the water-permeable cement mortar composition directly on the site, or as described below, the block manufactured and manufactured at the factory may be installed on the site.

The method of manufacturing boundary stone blocks in a factory is as follows.

The formwork of the boundary stone block for the purpose is assembled, and the assembled formwork is mounted on the centrifugal force compactor or vibration compactor. The above-mentioned permeable cement mortar composition is poured into the formwork, and after curing the permeable cement mortar composition, the cured composition is demolded from the formwork.

Hereinafter, examples of the water-permeable cement mortar composition according to the present invention will be described in more detail, and the present invention is not limited to the following examples.

≪ Example 1 >

After mixing 13 wt% of inorganic binder, 42 wt% of fine aggregate and 38 wt% of coarse aggregate, the mixture was stirred in a forced mixer, followed by further mixing 3 wt% of water, 3 wt% of special admixture, and 1 wt% of water reducing agent for 2-3 minutes. By stirring, a water-permeable cement mortar composition was prepared.

The inorganic binder was usually used by mixing 30% by weight of Portland cement, 60% by weight of bottom ash, 8% by weight of fly ash and 2% by weight of gypsum.

As the special admixture, only methyl methacrylate resin was used.

The sensitizer was a naphthalene-based sensitizer.

<Example 2>

13 wt% of inorganic binder, 42 wt% of fine aggregate, and 38 wt% of coarse aggregate were stirred in a forced mixer, followed by further mixing 3 wt% of water, 3 wt% of special admixture, and 1 wt% of water reducing agent, followed by stirring for 2-3 minutes. The water-permeable cement mortar composition was prepared.

The inorganic binder was usually used by mixing 30% by weight of Portland cement, 60% by weight of bottom ash, 8% by weight of fly ash and 2% by weight of gypsum.

The special admixture was used by mixing 50% by weight of methyl methacrylate resin, 30% by weight of butyl acrylate resin, 18% by weight of polyacrylic ester and 2% by weight of methyl cellulose.

The sensitizer was a naphthalene-based sensitizer.

<Example 3>

13 wt% of inorganic binder, 42 wt% of fine aggregate, and 38 wt% of coarse aggregate were stirred in a forced mixer, followed by further mixing 3 wt% of water, 3 wt% of special admixture, and 1 wt% of water reducing agent, followed by stirring for 2-3 minutes. The water-permeable cement mortar composition was prepared.

The inorganic binder was usually used by mixing 30% by weight of Portland cement, 60% by weight of bottom ash, 8% by weight of fly ash and 2% by weight of gypsum.

The special admixture was used by mixing 40% by weight of methyl methacrylate resin, 40% by weight of butyl acrylate resin, 18% by weight of polyacrylic ester and 2% by weight of methyl cellulose.

The sensitizer was a naphthalene-based sensitizer.

In order to compare the physical properties of the water-permeable cement mortar composition prepared according to Examples 1 to 3 described above, the general cement concrete composition and the polymer cement concrete composition, which are generally widely used, are used as Comparative Examples 1 and 2. present.

Comparative Example 1

Usually, 13 wt% of Portland cement, 42 wt% of fine aggregate, and 38 wt% of coarse aggregate were stirred in a forced mixer, and then 7 wt% of water was further mixed and stirred for 2-3 minutes to prepare a concrete composition.

Comparative Example 2

Usually, 13% by weight of Portland cement, 42% by weight aggregate, 38% by weight coarse aggregate are stirred in a forced mixer, and then 3% by weight of water, 3% by weight of polyacrylic ester and 1% by weight of water reducing agent are mixed for 2 to 3 minutes. Agitated to prepare a polymer cement concrete composition.

Hereinafter, test results for comparing and evaluating the physical properties of the water-permeable cement mortar composition prepared according to Examples 1 to 3 and the cement concrete compositions prepared according to Comparative Examples 1 and 2 will be described.

<Test Example 1>

Table 1 below is a test result of the strength of the permeable cement mortar composition prepared according to Examples 1 to 3 and the cement concrete composition prepared according to Comparative Examples 1 and 2 according to the present invention.

The tests were conducted based on the standards of KS F 2405 (concrete compressive strength test method), KS F 2408 (concrete flexural strength test method), and KS F 2423 (concrete tensile test method).

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 burglar
(kgf / cm2) warp 59 62 65 38 51 compression 395 405 411 370 368 Seal 38 41 42 24 33

As shown in Table 1, the warpage, compression, and tensile strength of the compositions prepared according to the present invention (Examples 1, 2 and 3) than the cement concrete compositions prepared according to Comparative Examples 1 and 2 It was much higher.

That is, it was confirmed that the water-permeable cement mortar composition using the bottom ash prepared according to the present invention is superior in strength in comparison with the cement concrete composition prepared according to Comparative Example 1 and Comparative Example.

<Test Example 2>

The water-permeable cement mortar composition prepared according to Examples 1 to 3 according to the present invention and the cement concrete composition prepared according to Comparative Example 1 and Comparative Example 2 were prepared by KS F 2424 (Test method for changing the length of concrete). Dry shrinkage was measured, and the results are shown in Table 2 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Dry Shrinkage (× 10 ^-4 ) 1.2 1.1 1.1 4.2 1.6

As shown in Table 2, the water-permeable cement mortar composition prepared according to Examples 1 to 3 according to the present invention shrinks due to the reduced amount of dry shrinkage as compared to the cement concrete compositions prepared according to Comparative Examples 1 and 2. It was confirmed that there was a reduction effect.

<Test Example 3>

Table 3 below is for the cement concrete composition prepared according to Examples 1 to 3 and the cement concrete composition prepared according to Comparative Examples 1 and 2 according to the present invention, according to the method specified in KS F 2456 The measurement results of the freeze thaw resistance test are shown.

Freeze thaw refers to the freezing and melting of the moisture absorbed by the concrete, and when the freeze thaw is repeated, fine cracks are generated in the concrete structure, resulting in a problem of deterioration in durability.

Table 3 below shows the durability index of each of the 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 90 92 92 44 87

As shown in Table 3, the water-permeable cement mortar composition prepared according to Examples 1 to 3 according to the present invention is significantly higher durability index than the cement concrete composition prepared according to Comparative Examples 1 and 2 It can be seen that durability is improved.

<Test Example 4>

The permeable cement mortar composition prepared according to Examples 1 to 3 and the cement concrete composition prepared according to Comparative Examples 1 and 2 were prepared according to the method specified in JIS A 1171 (Test Method of Polymer Cement Mortar). The measurement results of the water absorption are shown in Table 4 below. If the absorption rate is high, if the impurities or water penetrates into the concrete, the porosity increases in the concrete, causing a problem of damage to the structure.

division Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Absorption rate (%) 1.6 1.4 1.4 6.2 2.0

As shown in Table 4 above, the water-permeable cement mortar composition prepared according to Examples 1 to 3 had a lower water absorption than the cement concrete compositions prepared according to Comparative Examples 1 and 2.

<Test Example 5>

The permeable cement mortar composition prepared according to Examples 1 to 3 and the cement concrete composition prepared according to Comparative Examples 1 and 2 were tested according to JIS A 1171 (test method of polymer cement mortar). The results are shown in Table 5 below.

Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Chloride ion penetration depth (mm) 1.6 1.5 1.4 6.0 2.1

As shown in Table 5 above, the water-permeable cement mortar composition according to Examples 1 to 3 shows less chloride ion penetration depth than that of cement concrete compositions prepared according to Comparative Examples 1 and 2, It was confirmed that the resistance is high.

As mentioned above, although the preferred embodiment of this invention was described in detail, this invention is not limited to the said embodiment, A various deformation | transformation by a person of ordinary skill in the art within the scope of the technical idea of this invention is carried out. This is possible.

10: luminous part 100: boundary stone block

Claims (9)

0.1 to 10% by weight of special admixture, 5 to 25% by weight of inorganic binder, 25 to 55% by weight of fine aggregate, 15 to 40% by weight of coarse aggregate, and 0.5 to 6% by weight of water, the special admixture is methyl methacrylate And a resin, wherein the inorganic binder includes a bottom ash, and the special admixture further comprises a butyl acrylate resin, a polyacrylic ester, and methyl cellulose.
delete According to claim 1, wherein the methyl methacrylate is contained 15 to 70% by weight based on the special admixture, the butyl acrylate resin is contained 5 to 50% by weight relative to the special admixture, the polyacrylic ester special admixture 1 to 30% by weight, the methyl cellulose is permeable cement mortar composition, characterized in that 1 to 20% by weight based on the special admixture.
The method of claim 1, wherein the inorganic binder,
A water-permeable cement mortar composition comprising 10 to 70% by weight of cement, 20 to 80% by weight of bottom ash, 1 to 20% by weight of fly ash, and 0.5 to 10% by weight of gypsum.
The method of claim 1, wherein the cement mortar composition,
The inorganic pigment further comprises 0.5 to 7% by weight of an inorganic pigment, wherein the inorganic pigment is composed of at least one material selected from titanium oxide, red iron oxide, yellow iron oxide, chromium oxide (CrO ₃ ), purple iron oxide, and black iron oxide. A water-permeable cement mortar composition, characterized in that.
According to claim 1, wherein the cement mortar composition further comprises a water reducing agent, the water-permeable cement mortar composition, characterized in that containing 0.01 to 1% by weight relative to the cement mortar composition.
Assembling formwork forming boundary stones on the upper side of the ground;
Pouring the permeable cement mortar composition according to claim 1 on the formwork;
Curing the poured water-permeable cement mortar composition; And
Forming a boundary stone block by demolding the formwork from the cured composition.
Assembling the formwork of the boundary stone block;
Mounting the assembled die to a centrifugal compactor or vibrating compactor;
Placing the water-permeable cement mortar composition according to claim 1 on the formwork;
Curing the poured permeable cement mortar composition; And
Method for producing a boundary stone block comprising the step of demolding the cured water-permeable cement mortar composition in the formwork.
A boundary stone block manufactured by the method according to claim 7 or 8, wherein grooves are formed in a longitudinal direction on an upper surface of the boundary stone block, and night visibility is ensured by applying a luminous material to the groove or inserting a luminous body to form a luminous unit. .

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