KR100982653B1 - Rapid setting polymer cement mortar composite, manufacturing method of boundary block using the composite and boundary block manufactured by the method - Google Patents

Abstract

PURPOSE: A quickly curable polymer and a cement mortar composition are provided to improve flexibility, tension strength, adhesive strength, and durability by reducing a water-cement ratio using a polymer admixture, to enhance water retaining capacity, and to recycle industrial wastes using a pozzolan material. CONSTITUTION: A quickly curable polymer and a cement mortar composition comprises 0.05-12 weight% of a polymer admixture, 3-28 weight% of a quickly curable inorganic binder, 23-57 weight% of fine aggregates, 13-24 weight% of thick aggregates, and 0.1-7 weight% of water. The polymer admixture includes an acrylic resin. The quickly curable inorganic binder includes cement, calcium sulfoaluminate, bottom ash which is a pozzolan material, and blast furnace slag.

Description

Rapid setting polymer cement mortar composite, manufacturing method of boundary block using the composite and boundary block manufactured by the method

The present invention relates to a cement mortar composition and a method for manufacturing a boundary stone block using the same, and more particularly, by mixing a polymer admixture to lower water-cement ratio, thereby improving warpage, tension, adhesion strength and durability, and a water content of the material itself. The use of this high industrial waste pozzolan material improves repair capacity and is useful for recycling industrial waste. The high water content pozzolanic material enables high water / cement (W / C) ratio even with the addition of small amounts of polymer admixtures. The present invention relates to a fast-curing polymer cement mortar composition which can reduce the strength and improve the durability of the cement mortar composition by using the same, and a method for preparing a boundary stone block using the same, and a boundary stone block manufactured by the method.

In general, roads are divided into sidewalks and driveways for safe passage of vehicles and pedestrians, and sidewalk road boundary blocks are installed on the boundaries to separate the sidewalks and driveways.

Conventional sidewalk boundary block is composed of a hexahedron having a rectangular cross-sectional structure, according to the processing method, it is divided into natural granite boundary stone, general concrete boundary stone and artificial granite boundary stone.

Among them, natural granite boundary stone has a beautiful aesthetic advantage, while the price is expensive and most of them have to depend on imports.

In addition, the general concrete boundary stone can be mass-produced, while the price is low, there is a disadvantage that the aesthetics such as color and texture are not beautiful.

And, in the case of artificial granite boundary stone, the boundary stone is manufactured by mixing marble pieces and concrete, and the surface is manufactured by grinding the surface by using water and a grinding machine. It is somewhat lower than the boundary stone, and there is a problem in that a lot of manpower and time are required for the polishing process.

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 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.

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 present invention has been made to solve the above problems, by incorporating a polymer admixture to lower the water-cement ratio to improve the bending, tensile, adhesion strength and durability performance, industrial wastes and high moisture content of the material itself pozzolan The use of materials improves repair capacity and is useful for recycling industrial wastes, and the high water content of pozzolanic materials enables the reduction of water / cement (W / C) ratios even with the addition of small amounts of polymer, resulting in a conventional cement mortar composition. It is to provide a fast-curing polymer cement mortar composition, a method for producing a boundary stone block using the same and the boundary stone block produced by the above method that can exhibit a much higher strength expression and durability improvement effect.

The present invention, 0.05 to 12% by weight of the polymer admixture, 3 to 28% by weight of the fast curing inorganic binder, 23 to 57% by weight fine aggregate, 13 to 42% by weight coarse aggregate and 0.1 to 7% by weight of water, the polymer admixture Is an acrylic resin, and the fast-drying inorganic binder is cement, calcium sulfoaluminate for initial strength expression, and when contacted with water, a bottom ash which is a pozzolanic material that forms a compound having a cement property by chemical reaction with calcium hydroxide at room temperature. It provides a fast curing polymer cement mortar composition comprising a blast furnace slag.

The polymer admixture further includes a siloxane resin and an inorganic oxide, wherein the siloxane resin is contained in an amount of 3 to 35% by weight based on the polymer admixture, and the inorganic oxide is contained in an amount of 0.5 to 15% by weight based on the polymer admixture.

The inorganic oxide is preferably at least one material selected from SiO ₂ , Al ₂ O ₃ , TiO ₂ and ZrO ₂ .

The polymer admixture further includes an antifoaming agent, and the antifoaming agent is preferably contained in an amount of 0.05 to 2 wt% based on the polymer admixture.

The fast-hard inorganic binder is usually 30 to 80% by weight of cement, 5 to 25% by weight of calcium sulfo aluminate, 10 to 60% by weight of bottom ash and 5 to 20% by weight of blast furnace slag.

The fast-curing polymer cement mortar composition may further include 0.1 to 5% by weight of an inorganic pigment with respect to the fast-curing polymer cement mortar composition, and the inorganic pigment may include titanium oxide, red iron oxide, yellow iron oxide, and chromium oxide (CrO ₃ ). It is preferable that it consists of at least one material selected from purple iron oxide and black iron oxide.

The fast curing polymer 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 2 wt% based on the fast curing polymer cement mortar composition.

In addition, the present invention, the step of assembling the formwork forming the boundary stone on the upper side of the ground, the step of pouring the fast-curing polymer cement mortar composition on the form, and curing the poured fast-curing polymer 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 fast-diameter polymer cement mortar composition to the formwork, It provides a method of manufacturing a boundary stone block comprising the step of curing the hard polymer cement mortar composition and demolding the cured fast-curing polymer 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 luminous material is applied to the groove or the luminous body is inserted into the luminous unit is formed, or the upper surface of the boundary stone block The luminous material is coated or coated to form a luminous part, thereby providing a boundary stone block having night visibility.

According to the present invention, it is possible to incorporate a polymer admixture to lower the water-cement ratio to improve the warpage, tension, adhesion strength and durability of the composition.

The use of pozzolanic materials, which are industrial wastes and the water content of the material itself is high, improves the repair capacity and is useful in the recycling of industrial wastes, and the use of polymer admixtures can improve the curing time, workability, ductility and repair capacity of the composition. .

By using pozzolan material having a high water content of the material itself, even if a small amount of polymer is added, the water / cement (W / C) ratio can be effectively reduced, resulting in a much higher strength development and durability improvement effect than conventional cement mortar compositions.

In addition, pozzolan material, which is an industrial waste, can be used as a substitute for cement, thereby reducing the material cost.

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

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. 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. Like numbers refer to like elements in the figures.

Fast-acting polymer cement mortar composition according to a preferred embodiment of the present invention includes a polymer admixture, a fast-hard inorganic binder, fine aggregate, coarse aggregate and water. The polymer admixture is contained 0.05 to 12% by weight relative to the fast-curing polymer cement mortar composition, the fast-hard inorganic binder is contained 3 to 28% by weight relative to the fast-curing polymer cement mortar composition, the fine aggregate is fast-curing polymer cement mortar 23 to 57% by weight of the composition is contained, the coarse aggregate is contained 13 to 42% by weight relative to the fast-curing polymer cement mortar composition, and water is preferably contained 0.1 to 7% by weight relative to the fast-curing polymer cement mortar composition. Do.

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 23 to 57% by weight based on the fast-curing polymer cement mortar composition, and the coarse aggregate is preferably contained by 13 to 42% by weight relative to the fast-curing polymer cement mortar composition.

The polymer admixture is to have physical properties that can improve the curing time, workability, ductility, and water retention capacity of the fast-curing polymer cement mortar composition. The polymer admixture according to the preferred embodiment of the present invention includes an acrylic resin, and may further include a siloxane resin, an inorganic oxide, and an antifoaming agent. When the polymer admixture further comprises a siloxane resin, an inorganic oxide and an antifoaming agent, the acrylic resin is preferably contained in an amount of 50 to 80% by weight based on the polymer admixture, and the siloxane resin in an amount of 3 to 35% by weight based on the polymer admixture. Preferably, the inorganic oxide is preferably contained in an amount of 0.5 to 15% by weight based on the polymer admixture, and the defoaming agent is preferably contained in an amount of 0.05 to 2% by weight based on the polymer admixture.

The acrylic resin has excellent weather resistance, which is resistant to weather and climate, such as sunlight, inhibits corrosion due to external environmental changes (weather and climate change) and penetrates into the cement mortar boundary stone. It is added to improve adhesion strength and toughness by integrating and to improve colorability by pigments and the like.

When the polymer admixture further includes a siloxane resin, an inorganic oxide, and an antifoaming agent, the acrylic resin is preferably mixed with 50 to 80 wt% with respect to the polymer admixture, and when the content of the acrylic resin exceeds 80 wt%, When the viscosity of the polymer cement mortar composition is lowered, material separation may occur, and when the content of the acrylic resin is less than 50% by weight, the workability and strength of the boundary stone of the fast-curing polymer cement mortar composition may be reduced.

The siloxane resin is used to lower the viscosity of the fast curing polymer cement mortar composition to maintain workability as well as to improve ductility. It is also excellent in acid and alkali resistance and used to improve strength. The siloxane resin is preferably mixed with 3 to 35% by weight relative to the polymer admixture, when the content of the siloxane resin exceeds 35% by weight, the performance of the fast curing polymer cement mortar composition may be improved, but the price competitiveness may be lowered. When the content of the resin is less than 3% by weight, the workability of the fast-curing polymer cement mortar composition is improved, but the performance of the boundary stone may be deteriorated.

The inorganic oxide is used to improve the strength and durability of the fast curing polymer cement mortar composition. The inorganic oxide is preferably at least one material selected from SiO ₂ , Al ₂ O ₃ , TiO ₂ and ZrO ₂ . The particle size of the particles of the inorganic oxide is preferably in the range of 10nm ~ 500㎛, if less than 10nm is not only difficult to manufacture the inorganic oxide, but also expensive and economical, if it exceeds 500㎛ difficult to bond between particles This may occur so that the effect of improving the strength may be weak. The inorganic oxide is preferably 0.5 to 15% by weight with respect to the polymer admixture, when the content of the inorganic oxide exceeds 15% by weight of the fast-curing polymer cement mortar composition is reduced the material separation of the composition occurs and workability If the content of the inorganic oxide is less than 0.5% by weight, the workability of the fast-curing polymer cement mortar composition may be improved, but the strength and durability of the boundary stone may be reduced.

The antifoaming agent is used to improve the strength and durability of the fast curing polymer cement mortar composition. The antifoaming agent is preferably 0.05 to 2% by weight with respect to the polymer admixture, if the content of the antifoaming agent exceeds 2% by weight air of the fast-curing polymer cement mortar composition is entrained material separation and strength and durability is reduced When the content of the antifoaming agent is less than 0.05% by weight, the material separation phenomenon of the fast-curing polymer cement mortar composition may be reduced, but the strength and durability of the boundary stone may be reduced.

The polymer admixture may be contained in an amount of 0.05 to 12% by weight based on the fast cemented polymer cement mortar composition, and when the content of the polymer admixture exceeds 12% by weight based on the fast cemented polymer cement mortar composition, The higher viscosity can lower workability (slump), delay the hydration reaction, lower the premature compressive strength and lower the price competitiveness. When the content of the polymer admixture is less than 0.05% by weight relative to the fast-curing polymer cement mortar composition, the water retention capacity, strength and durability of the boundary stone may be reduced.

The fast diameter inorganic binder is preferably 30 to 80% by weight of cement, 5 to 25% by weight of calcium sulfo aluminate, 10 to 60% by weight of bottom ash and 5 to 20% by weight of blast furnace slag. Bottom ash and blast furnace slag are pozzolanic materials, which do not react with water (water) but when they meet, they react with calcium hydroxide at room temperature to form compounds with cement properties. Pozzolanic bottom ash and blast furnace slag reduce water-cement ratio and increase long-term strength and durability.

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

The bottom ash and blast furnace slag are used to improve latent hydraulic properties, long-term strength development and durability, and the increase in weight ratio decreases the initial strength, but increases long-term strength development and durability. The bottom ash has potential hydraulic properties as industrial waste generated from a thermal power plant, but the water resistance is small because the water content of the material itself is high. Bottom ash is preferably contained 10 to 60% by weight based on the fast-hard inorganic binder. If the bottom ash content is less than 10% by weight, the initial strength of the fast-curing polymer cement mortar composition may be expressed, but the long-term strength and durability may be reduced, and if the content of the bottom ash is more than 60% by weight, the fast-curing polymer cement The workability and long-term strength of the mortar composition are improved but the initial strength may be delayed.

The blast furnace slag is used to improve latent hydraulic properties, long-term strength development and durability. Increasing the weight ratio of blast furnace slag lowers the initial strength, but increases the long-term strength development and durability. Instead of blast furnace slag, fly ash, silica powder and silica fume may be used. The blast furnace slag is preferably contained 5 to 20% by weight based on the fast-hard inorganic binder. When the content of blast furnace slag is less than 5% by weight, the initial strength of the fast-hardening polymer cement mortar composition may be expressed, but the long-term strength and durability may be reduced, and when the content of the blast furnace slag is more than 20% by weight, the fast-hardening polymer cement The workability and long-term strength of the mortar composition are improved, but the initial strength may be delayed.

The calcium sulfo aluminate is used for initial strength expression. Increasing the content of calcium sulfo aluminate shows fast curing properties. If the content is less than 5% by weight, the initial strength improvement of fast cement polymer mortar may be insignificant. Due to the good physical properties can be obtained, but workability may be reduced.

The fast-hard inorganic binder is preferably contained 3 to 28% by weight relative to the fast-hard polymer cement mortar composition, when the content of the fast-hard inorganic binder exceeds 28% by weight, workability, strength and durability is improved but dry shrinkage And economic efficiency may be lowered, and if the content of the fast-hardening inorganic binder is less than 3% by weight based on the fast-curing polymer cement mortar composition, dry shrinkage may be less, but strength and durability may be lowered.

The fast curing polymer cement mortar composition of the present invention may further comprise 0.01 to 2% by weight of a water reducing agent. The water reducing agent improves strength and durability by reducing the water-cement ratio of the fast-hardening polymer cement mortar composition. Examples of the water reducing agent include polycarboxylic acid, melamine, and naphthalene-based resins. Melamine or naphthalene-based water reducing agents have a slight improvement in strength and durability compared to polycarboxylic acid-based water reducing agents, and have no significant effect of reducing water-cement ratio. There is a disadvantage in that miscibility with the polymer admixture is poor. Therefore, it is preferable to use a polycarboxylic acid type water reducing agent for the fast diameter polymer cement mortar composition according to the present invention.

The fast curing polymer cement mortar composition of the present invention may further comprise 0.1 to 5% by weight of an inorganic pigment. When it contains an inorganic pigment, it is 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 Various colors such as black, blue and white can be realized.

Fast-acting polymer cement mortar composition according to a preferred embodiment of the present invention can be prepared by the following method.

The inner diameter inorganic binder, fine aggregate and coarse aggregate are mixed in a proportion and stirred in a forced mixer. The fast-hard inorganic binder is mixed 3 to 28% by weight relative to the fast-curing polymer cement mortar composition, the fine aggregate is mixed to be contained 23 to 57% by weight relative to the fast-curing polymer cement mortar composition, the coarse aggregate is It is preferable to mix 13-42 weight% with respect to the hard polymer cement mortar composition.

Water and a polymer admixture are additionally mixed in a predetermined ratio to the mixture of the fast diameter inorganic binder, fine aggregate, and coarse aggregate, and stirred for 1 to 10 minutes. At this time, the water reducing agent and the inorganic pigment may be mixed together. The polymer admixture is mixed so as to contain 0.05 to 12% by weight relative to the fast-curing polymer cement mortar composition, and the water is preferably mixed to contain 0.1 to 7% by weight with respect to the fast-curing polymer cement mortar composition.

Hereinafter, a method of manufacturing a boundary stone block using a fast-curing polymer 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.

The die-cast polymer cement mortar composition described above is poured into the formwork. By forming the above-mentioned fast-curing polymer cement mortar composition by a form, a boundary stone block can be formed, which can easily pass moisture into the basement and retain a certain amount of moisture over a long period of time. There is an effect that the temperature of the road and the surroundings can be lowered by the heat of vaporization.

The poured hard polymer cement mortar composition is cured.

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

Further, as shown in FIGS. 1 and 2, grooves are formed in the longitudinal direction on the upper surface of the boundary stone block 100, and a luminous unit 10 is formed by applying a luminous material to the grooves or inserting a luminous body. 3, the luminous unit 10 may be formed by coating or applying a luminous body to the surface of the boundary stone block 100 as shown in FIG. 3. 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 a fast-hard polymer cement mortar composition directly in the field, or may be installed in the factory as manufactured below.

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 fast-curing polymer cement mortar composition is poured into the formwork, and after curing the fast-curing polymer cement mortar composition, the cured composition is demolded from the formwork.

Hereinafter, the embodiments of the fast curing polymer 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 15% by weight of the fast-setting inorganic binder, 42% by weight of the aggregate, 37% by weight of the coarse aggregate and stirred in a forced mixer, 2% by weight of water, 3% by weight of the polymer admixture and 1% by weight of the water reducing agent are further mixed. Stirring for a minute gave a fast curing polymer cement mortar composition.

The fast-hard inorganic binder was usually used by mixing 40% by weight of Portland cement, 20% by weight of calcium sulfoaluminate, 30% by weight of bottom ash and 10% by weight of blast furnace slag.

Only acrylic resin was used as the polymer admixture.

The water reducing agent used a polycarboxylic acid-based water reducing agent.

<Example 2>

After mixing 15% by weight of the fast-setting inorganic binder, 42% by weight of the aggregate, 37% by weight of the coarse aggregate and stirred in a forced mixer, 2% by weight of water, 3% by weight of the polymer admixture and 1% by weight of the water reducing agent are further mixed. Stirring for a minute gave a fast curing polymer cement mortar composition.

The fast-hard inorganic binder was usually used by mixing 40% by weight of Portland cement, 20% by weight of calcium sulfoaluminate, 30% by weight of bottom ash and 10% by weight of blast furnace slag.

The polymer admixture was used in an amount of 60% by weight of acrylic resin, 20% by weight of siloxane resin, 19% by weight of inorganic oxide, and 1% by weight of antifoaming agent.

The water reducing agent used a polycarboxylic acid-based water reducing agent.

<Example 3>

After mixing 15% by weight of the fast-setting inorganic binder, 42% by weight of the aggregate, 37% by weight of the coarse aggregate and stirred in a forced mixer, 2% by weight of water, 3% by weight of the polymer admixture and 1% by weight of the water reducing agent are further mixed. Stirring for a minute gave a fast curing polymer cement mortar composition.

The fast-hard inorganic binder was usually used by mixing 40% by weight of Portland cement, 20% by weight of calcium sulfoaluminate, 30% by weight of bottom ash and 10% by weight of blast furnace slag.

The polymer admixture was used by mixing 50% by weight of acrylic resin, 30% by weight of siloxane resin, 19% by weight of inorganic oxide and 1% by weight of antifoaming agent.

The water reducing agent used a polycarboxylic acid-based water reducing agent.

In order to compare the physical properties of the fast-curing polymer cement mortar composition prepared according to Examples 1 to 3, the general cement concrete composition and the polymer cement concrete composition, which are currently widely used, are used as Comparative Examples 1 and 2. present.

Comparative Example 1

Usually, 15 wt% of Portland cement, 42 wt% of fine aggregate, and 37 wt% of coarse aggregate were stirred in a forced mixer, and then 6 wt% of water was further mixed and stirred for 2-3 minutes to prepare a cement concrete composition.

Comparative Example 2

Usually, 15% by weight of Portland cement, 42% by weight of aggregate, 37% by weight of coarse aggregate are stirred in a forced mixer, followed by further mixing 2% by weight of water, 3% by weight of acrylic resin and 1% by weight of water reducing agent and stirring for 2 to 3 minutes. To prepare a polymer cement concrete composition.

Hereinafter, test results for comparing and evaluating the physical properties of the fast-curing polymer 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 shows the results of testing the strength of the fast-acting polymer cement mortar compositions prepared according to Examples 1 to 3 and the cement concrete compositions 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 80 85 92 42 65 compression 495 505 531 380 458 Seal 48 51 56 26 43

As shown in Table 1, the bending, compression, and tensile strength of the fast-curing polymer cement mortar compositions (Examples 1, 2 and 3) prepared according to the present invention were prepared according to Comparative Example 1 and Comparative Example 2. Significantly higher than one cement concrete composition.

That is, it was confirmed that the fast diameter polymer cement mortar composition 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>

Fast cemented polymer 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 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 ) 1.0 0.9 0.8 4.0 1.3

As shown in Table 2, the fast-curing polymer cement mortar composition prepared according to Examples 1 to 3 according to the present invention is reduced compared to the cement concrete composition prepared according to Comparative Example 1 and Comparative Example 2 reduced shrinkage It was confirmed that there was a reduction effect.

<Test Example 3>

Table 3 below is defined in KS F 2456 for fast curing polymer cement concrete compositions prepared according to Examples 1 to 3 and cement concrete compositions prepared according to Comparative Examples 1 and 2 according to the present invention. The results of the freeze thaw resistance test according to the method 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 91 93 93 45 89

As shown in Table 3, since the fast-curing polymer 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>

Fast cemented polymer cement mortar compositions prepared according to Examples 1 to 3 and cement concrete compositions prepared according to Comparative Examples 1 and 2 were prepared according to the method defined 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 (%) 1.0 0.9 0.9 6.0 1.5

As shown in Table 4 above, fast-paced polymer cement mortar composition prepared according to Examples 1 to 3 has a lower water absorption than the cement concrete composition prepared according to Comparative Example 1 and Comparative Example 2.

<Test Example 5>

The fast-curing polymer 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) 1.5 1.2 1.1 5.0 2.0

As shown in Table 5, the fast-curing polymer cement mortar composition according to Examples 1 to 3 shows less chloride ion penetration depth compared to 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 (10)

0.05 to 12% by weight of a polymer admixture, 3 to 28% by weight of the fast-bound inorganic binder, 23 to 57% by weight of fine aggregate, 13 to 42% by weight of coarse aggregate, and 0.1 to 7% by weight of water,
The polymer admixture includes an acrylic resin,
The fast diameter inorganic binder, cement, calcium sulfoaluminate for the initial strength development, when the water meets the chemical reaction with calcium hydroxide at room temperature to form a compound having a cement property of bottom ash and blast furnace slag Hard polymer cement mortar composition.
The method of claim 1, wherein the polymer admixture further comprises a siloxane resin and an inorganic oxide, the siloxane resin is contained 3 to 35% by weight based on the polymer admixture, the inorganic oxide is contained 0.5 to 15% by weight relative to the polymer admixture Fast-acting polymer cement mortar composition, characterized in that.
_{3. The} fast cement polymer mortar composition of claim 2, wherein the inorganic oxide is at least one material selected from SiO ₂ , Al ₂ O ₃ , TiO _2, and ZrO ₂ .
According to claim 2, wherein the polymer admixture further comprises an antifoaming agent, the antifoaming polymer cement mortar composition, characterized in that contained 0.05 to 2% by weight relative to the polymer admixture.
According to claim 1, wherein the fast-bonding inorganic binder, 30 to 80% by weight of cement, calcium sulfo aluminate 5 to 25% by weight, bottom ash 10 to 60% by weight and blast furnace slag 5 to 20% by weight Fast-acting polymer cement mortar composition characterized in that.
The method of claim 1, wherein the fast-curing polymer cement mortar composition further comprises 0.1 to 5% by weight of inorganic pigments relative to the fast-curing polymer cement mortar composition, the inorganic pigment is titanium oxide, red iron oxide, yellow iron oxide, chromium oxide (CrO ₃ ), fast iron polymer cement mortar composition, characterized in that consisting of at least one material selected from purple iron oxide and black iron oxide.
The fast-curing polymer cement mortar composition of claim 1, wherein the fast-curing polymer cement mortar composition further comprises a reducing agent, wherein the reducing agent is contained in an amount of 0.01 to 2 wt% based on the fast-curing polymer cement mortar composition.
Assembling formwork forming boundary stones on the upper side of the ground;
Pouring the fast-acting polymer cement mortar composition according to claim 1 on the formwork;
Curing the poured hard polymer 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 fast-hard polymer cement mortar composition of claim 1 in said formwork;
Curing the poured rapid polymer cement mortar composition; And
Method for producing a boundary stone block comprising the step of demolding the cured fast-curing polymer cement mortar composition in the formwork.
A method according to claim 8 or 9, wherein a groove is formed in a longitudinal direction on an upper surface of a boundary stone block and a luminous material is applied to the groove or a luminous body is inserted to form a luminous portion, or a luminous surface on an upper surface of a boundary stone block. Boundary stone block that ensures night visibility by coating or applying material to form luminous part.

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