WO2015099278A1

WO2015099278A1 - Concrete pavement construction method using foam shotcrete

Info

Publication number: WO2015099278A1
Application number: PCT/KR2014/010218
Authority: WO
Inventors: 윤경구
Original assignee: 강원대학교산학협력단
Priority date: 2013-12-24
Filing date: 2014-10-29
Publication date: 2015-07-02
Also published as: KR101442795B1

Abstract

The present invention relates to a concrete pavement construction method using foam shotcrete which uses: normal strength shotcrete that is produced by mixing normal concrete produced by a batch plant having a compressive strength of 21-30 MPa, transferred to a site and mixed with bubbles of 20-40% of the volume of the normal concrete, with a low-grade mixture material containing one or more of fly ash, fine slag powder and stone dust; and high-performance shotcrete that is produced by mixing the normal concrete with a high-grade mixture material containing one or more of silica fume, meta-kaolin, latex, polymer and a coloring material.

Description

Concrete paving method using bubble shotcrete

The present invention relates to a concrete pavement construction method, and more specifically, after the field transport to produce a normal concrete of compressive strength of 21 ~ 30MPa in the batcher plant, mixed with 20 to 40% of the bubble compared to the volume, the fluidity is usually increased High-performance concrete and silica fume, formed by mixing low-grade materials in which one or more of fly ash, slag powder and stone powder are mixed with concrete, and one or more of silica fume, metakaolin, latex, polymer and coloring materials The present invention relates to a concrete pavement construction method using foam shotcrete that can be easily maintained by reducing the construction cost and securing high strength and high durability by mixing high-performance concrete formed by mixing high-quality mixed materials.

Concrete pavement is mainly composed of joint concrete pavement and continuous reinforced concrete pavement. The joint concrete pavement has no reinforcement inside the pavement, but only dowel bars and longitudinal joints are installed on the transverse joints, and about 0.7% of the reinforcement is continuously reinforced in the longitudinal and transverse directions in continuous reinforced concrete pavement.

The concrete pavement is produced in a batcher plant, the ordinary concrete of less than 40mm slump and transported to the dump truck, and then poured in one step using a slip form paver.

Slip-foam fabrics are 300mm thick and slump 40mm concrete at once, so they are very heavy and weigh 150 tons. Therefore, it is expensive to move and install heavy concrete pavers.

In addition, the concrete pavement is mainly constructed of concrete, but can not secure long-term durability, construction with high-performance concrete can ensure long-term durability can be economical construction.

The high-performance concrete refers to concrete having high strength, high durability, and high fluidity compared to ordinary concrete in which water, cement, aggregate, and the like are mixed. At this time, the high strength means more than 35MPa strength, high durability requires more than 90% freeze-thaw resistance, high fluidity means very good concrete workability. The high-performance concrete exhibits the above-mentioned performance by using mixed materials such as silica fume, fly ash, slab fine powder, metakaolin, and chemical admixtures such as air entrainer, high performance fluidizing agent, and latex, and at the same time, high strength and high durability conditions. The internal structure must be tight because it must be satisfied, and the air volume is usually adjusted to 3-6% for freeze-thaw resistance.

The silica fume and the high performance fluidizing agent is typically used when manufacturing high performance concrete, and the silica fume is 1/80 to 1/100 of the finer than the cement powder which forms the concrete and is filled in concrete to fill the interior with a pozzolanic reaction. It is made of high strength and high durability, but it is usually used in combination with a high fluidizing agent because it has a characteristic of deteriorating workability due to its large specific surface area.

Such silica fume is usually 7-10% by weight of the cement to form the concrete, pre-blending to the cement is used in the form of mixed cement. This is because silica fume is too fine powder, and when mixed with other concrete materials during concrete mixing in a site batcher plant (BP), silica fume is not evenly dispersed and causes many problems. Moreover, silica fume is hardly dispersed when silica fume is added to the already mixed concrete in powder form.

[Preceding technical literature]

Republic of Korea Patent No. 10-1240284

Therefore, the present invention is to solve the conventional problems as described above, the object of the present invention is to produce a normal concrete of compressive strength of 21 ~ 30MPa in the batcher plant, after the field transfer, 20 to 40% of the bubbles compared to the volume Any of high-performance concrete and silica fume, metakaolin, latex, polymer, and coloring material formed by mixing low-grade materials in which one or more of fly ash, slag powder, and stone powder is mixed with ordinary concrete mixed with increased fluidity. The present invention provides a concrete paving construction method using foam shotcrete capable of constructing concrete paving with high-performance concrete formed by mixing one or more advanced blending materials.

In addition, another object of the present invention, when forming a multi-layer concrete packaging, by mixing a low-grade mixed material of any one or more of fly ash, slag powder, stone powder and mixed in the ordinary concrete of the bubble is mixed to increase the fluidity A high-performance concrete forms a lower layer of concrete pavement to provide economy and ease of construction, and any one of silica fume, metakaolin, latex, polymer, and coloring material is added to the ordinary concrete, which has increased fluidity due to bubbles in the upper layer. The high-performance concrete formed by mixing one or more advanced mixed materials is formed to form an upper layer of concrete pavement to secure high strength and high durability, thereby providing a concrete pavement construction method using bubble shotcrete that is easy to maintain.

In addition, another object of the present invention, by applying a shotcrete method that does not require compaction to concrete packaging, concrete packaging using bubble shotcrete that can be easily transported and installed by miniaturizing or lightweighting the packaging equipment, and lower construction cost To provide a construction method.

Concrete packaging construction method using the foam shotcrete of the present invention,

Reinforcing the pavement surface on which the concrete pavement is constructed with a reinforcing member;

Mixing water, cement, and aggregate at a predetermined ratio to produce and transport the ordinary concrete having a compressive strength of 21 to 30 MPa;

Mixing the bubbles and the lower mixed material into the ordinary concrete and mixing the mixed parts to form high-performance concrete;

Mixing bubbles and a high-grade mixed material into the ordinary concrete and mixing the mixed parts to form high-performance concrete;

The high performance concrete formed by mixing the lower mixed material is shotcrete on the pavement surface through the shorting guide member to form a lower layer, and the high performance concrete formed by mixing the advanced mixed material is shotcrete on the upper surface of the lower layer through the shorting guide member to form the upper layer. Forming a concrete pavement;

Comprising the step of finishing the concrete pavement surface,

When the high-performance concrete mixed with the air bubbles and the low / high-grade mixed material is discharged to the shorting guide member, the shotcrete is reduced so that the slump is reduced while dissipating the air bubbles contained in the high-performance concrete by blowing high-pressure air of 5 atm or more will be.

According to the present invention, in the batcher plant, after producing the ordinary concrete with a compressive strength of 21 ~ 30MPa, after the field transfer, by mixing 20 to 40% of the air bubbles by volume, any of fly ash, slag powder, and stone powder is added to the ordinary concrete with increased fluidity High-performance concrete formed by mixing one or more low-grade materials and high-performance concrete formed by mixing silica fume and high-quality mixed materials including one or more of metakaolin, latex, polymer, and coloring materials. By allowing the construction of concrete pavement, it will have the advantage of shortening the construction period.

In addition, according to the present invention, when the multi-layer concrete paving construction, high performance formed by mixing a low-mixing material in which any one or more of fly ash, slag powder, stone powder is mixed with ordinary concrete that is mixed with bubbles to increase fluidity The lower layer of concrete pavement is made of concrete, and high-quality mixed material is mixed with any one or more of silica fume, metakaolin, latex, polymer, and coloring materials in ordinary concrete, which has increased fluidity due to bubbles in the upper layer. High-performance concrete formed with high-performance concrete forms the upper layer of concrete pavement, making it easy to secure and maintain high strength and high durability, as well as reduce the construction cost than constructing high-performance concrete mixed with high-quality mixed materials. It can have the advantage of improving the economics.

In addition, another object of the present invention is that by applying a shotcrete method that does not require compaction to concrete packaging, it is possible to reduce the construction cost by facilitating transport and installation by miniaturizing or reducing the packaging equipment, it is possible to have the advantage of lowering the construction cost .

1 is a flow chart of the present invention.

2 reinforces the packaging of the present invention.

3 is a view in which the present invention forms ordinary concrete

4 is a view showing the bubble of the present invention.

5 to 6 is a view showing a mixing portion of the present invention

7 to 9 are slump photographs of the present invention ordinary concrete, high performance concrete and shot concrete high performance concrete

10 to 12 is a discharge process of the present invention high performance concrete

13 to 15 is a shortening process diagram of the present invention

Figure 16 is a mixed state of the coloring material in the present invention

17 to 18 is a view showing a state in which the packaging by the present invention construction

* Description of the symbols for the main parts of the drawings *

10: batcher plant 20: reinforcing member

30: anchorage 40: ready-mixed truck

50: pump car 60: mixing unit

70: shorting guide member 100: packaging surface

200: Concrete Pavement

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. 1 is a flow chart of the present invention.

Reinforcing the pavement surface 100 on which the concrete pavement 200 is constructed with a reinforcing member;

Mixing the bubbles and the lower mixed material into the ordinary concrete and mixing the mixed parts with the mixing part 60 to form high-performance concrete;

Mixing the bubbles and the high-grade mixed material into the ordinary concrete and mixing the mixed parts with the mixing unit 60 to form high-performance concrete;

The high performance concrete formed by mixing the lower mixed material is shotcrete on the pavement surface 100 through the shorting guide member 70 to form a lower layer 210, and the high performance concrete formed by mixing the advanced mixed material is the shorting guide member ( Forming a concrete pavement 200 in which shotcrete is formed on the upper surface of the lower layer 210 through the upper surface of the lower layer 210;

Comprising the step of finishing the concrete pavement 200,

When the high-performance concrete mixed with the bubble and the low / high-grade mixed material is discharged to the shorting guide member 70, the shotcrete to reduce the slump while dissipating the air bubbles contained in the high-performance concrete by blowing high-pressure air of 5 atm or more It is characterized by.

The following describes the construction process of the present invention configured as described above.

First, as shown in FIG. 2, in consideration of the type of concrete pavement 200, the pavement surface 100 of the concrete pavement 200 is reinforced with a reinforcing member, and the pavement surface (not to move during shortening) 100), the reinforcing member is preferably one of the longitudinal and transverse reinforcement of the continuous reinforced concrete packaging, or the transverse dowel bar or longitudinal tie bar of the joint concrete packaging.

In addition, as shown in Figure 3, the compressive strength is 21 ~ 30MPa, water, cement, aggregate, etc., respectively supplied from the batcher plant 10 so as to form a normal concrete of slump 60 ~ 80mm compounded in a certain ratio And after mixing, it is transferred to the construction site by the ready-mixed concrete truck (40).

In this case, the water-cement ratio is less than 42% for the strength of the final shotcrete, but after the shotcrete is placed, it is preferable to adjust the slump without using the water-cement ratio in order to form a solid bottom. Do.

When the ready-mixed concrete truck 40 is transported on-site, the normal concrete put into the ready-mixed concrete truck 40 is difficult to pump due to poor pumping property due to the additional loss of slump during transport, as shown in FIG. 4, a foaming agent and a foaming agent or air bubbles. Bubbles produced from the generator is injected into the ready-mixed concrete truck 40.

At this time, the amount of bubbles injected into the ready-mixed concrete truck 40 is about 60 seconds by operating the bubble generator in 1 m 3 of normal concrete in order to mix 30% of the bubbles in the volume of concrete to generate 240 L of bubbles. 5 to 6, the bubble is added to the normal concrete by about 20 to 40% of the total concrete volume, and the ball bearing effect of the bubble is mounted on the shaft 61 of the mixing unit 60. After mixing uniformly by a plurality of rotating mixing member 62, and mixed with a low-grade mixed material of any one or more of fly ash, slag powder, stone powder to the ordinary concrete containing bubbles and mixing section 60 ) To form a high-performance concrete mixed with bubbles and low-grade mixed materials, silica fume or metakaolin, latex, polymers, coloring materials in the ordinary concrete containing the bubbles Of any one or incorporation of one or more mixed advanced mixed ingredients and mixed to form bubbles, and the high-performance concrete mix is advanced mixing materials to the mixing section 60.

Here, the bubble and the lower / advanced mixed material can increase the pumping property of the ordinary concrete, as well as increase the high strength, high durability, the lower mixed material is based on 100 parts by weight of the cement to form the normal concrete 3 ~ 3 ~ It is preferable to mix at 30 parts by weight, and the high-grade mixed material is preferably mixed at 2 to 20 parts by weight based on 100 parts by weight of the cement forming the ordinary concrete.

As shown in FIG. 7, the high-performance concrete mixed with the bubbles formed by the above-described process and the low / high-grade mixed material is supplied to the pump car 50 and the shorting guide member 70 detachably mounted to the pressure feeding pipe 51. It is discharged to the pavement surface 100 through, which is, as shown in Figures 8 to 10, when the high-performance concrete mixed with the bubble and low / advanced mixed material is supplied to the shorting guide member 70, the inside penetrates While being supplied to the shorting guide body 71 formed with a smaller diameter at the center than the diameter of the inlet / outlet, high-performance concrete mixed with air bubbles and low / high grade mixed materials is compressed while generating pressure.

In addition, when the high-performance concrete mixed with air bubbles and low / high grade mixed material is discharged to the outlet of the shorting guide body 71 having a diameter larger than the diameter of the central part via the center of the shorting guide body 71, a high pressure of 5 atm or higher Of compressed air is supplied to the air supply hole 72 formed to be inclined radially on the outer circumferential surface of the shorting guide body 71 and vortexed to the outlet of the shorting guide body 71 to shorten. The compressed air and the high-performance concrete are sprayed. When the compressed air and the high-performance concrete are unfolded as well as spreading, the compressed air and the high-performance concrete collide with each other so that a large amount of bubbles contained in the high-performance concrete are dissipated, and the slump is reduced by the dissipation of the bubbles, as shown in FIGS. 11 to 12. As it is, high-performance concrete is shotcrete on the pavement surface 100 is to be concrete pavement 200.

Here, when the concrete pavement 200 is one layer, it can be formed of high-performance concrete mixed with air bubbles and low / high-grade mixed materials, but when the two or more layers of concrete packaging construction, mixed air bubbles and low / high-grade mixed materials Among the high performance concrete, the lower layer 210 of the two-layer concrete pavement 200 'is formed of high-performance concrete mixed with low-grade mixed materials, and the two-layer concrete is high-performance concrete mixed with high-grade mixed materials on the upper surface of the lower layer 210. By forming the packaging 200 'upper layer 220, it is possible to improve the economics by reducing the construction cost.

Table 1 shows 20% of bubbles per unit volume in ordinary concrete with mixing strength of 27MPa and slump of 70 ~ 80mm. 27% and 33% of the mixture was mixed, and the result of the experiment was shot at 9 atm using a compressor. As shown in FIGS. 13 to 15, when 20% of the bubble amount was added, the slump was 80 mm in the normal concrete, increased to 250 mm after bubble mixing, and decreased to 90 mm after shortening. When 20% of the bubble amount was added, 6.8 kg / m 3 of water was added, but after the final shorting, the slump was reduced because the water molecules were partially dissipated into the atmosphere when the high-performance concrete was discharged. In case of mixing 27% and 33% of the bubble volume, there is a large amount of additional unit, so that The final slump is larger than that of ordinary concrete, but it can be seen that the final air volume is constant regardless of the amount of normal concrete or additional entrained air.

In addition, as described above, the normal concrete with a slump larger due to the bubble mixing of 20 to 33% by volume can be easily shorted because of its pumping property, but the final slump is too large with 90 to 150 mm to short the target pavement surface 100. If you do, you will get too sick to use the slip foam paper. Therefore, low-cost mixed materials containing one or more of fly ash, slag powder, and stone powder, which are inexpensive and viscous when mixed, are additionally mixed in the form of powder to ordinary concrete with large slump to lower the water-bonding ratio and shorten it. By reducing the final slump, slim foam fabers can be used, as well as a solid floor.

Table 1

Changes in Slump and Air Volume According to Bubble Mixing Volume

Bubble mixture		Slump (mm)			Air volume (%)
Bubble amount	Additional Unit Quantity (kg / ㎥)	Ordinary concrete	After bubble mixing	After shorting	Ordinary concrete	After bubble mixing	After shorting
20%	6.8	80	250	90	7	20	6
27%	9.1	70	260	100	5	27	7
33%	18.1	70	275	150	5	33	7

That is, by mixing the low-mixing material of any one or more of the foam and fly ash or slag powder, stone powder to the ordinary concrete to increase the pumping properties of the high-performance concrete, as well as the high-performance mixture of air bubbles and low-grade mixed materials When concrete is discharged while colliding with high-pressure compressed air, it is shotcrete on the pavement surface 100 while dissipating the bubbles contained in the high-performance concrete can be concrete pavement 200 to secure the properties of high-performance concrete, the pavement surface ( It shall be packaged to accommodate the reinforcement member reinforced by 100).

Here, it is preferable that the lower blended material in which any one or more of the fly ash, slag powder, and stone powder is mixed is mixed in an amount of 3 to 30 parts by weight based on 100 parts by weight of the cement for forming the ordinary concrete.

In addition, in the case where the concrete pavement is two layers, the lower layer 210 of the two-layer concrete pavement 200 'is formed of high-performance concrete in which bubbles and low-grade mixed materials are mixed in the ordinary concrete, and bubbles and bubbles are formed on the upper surface of the lower layer 210. High-performance concrete mixed with high-grade mixed materials forms a two-layer concrete pavement 200 'and an upper layer 220. The high-performance concrete forming the upper layer 220 is placed on ordinary concrete transported to the ready-mixed concrete truck 40. Bubbles are added to the total concrete volume by about 20 to 40% to be uniformly mixed by a plurality of mixing members 62 that are mounted and rotated by the ball bearing effect of the bubbles and the shaft 61 of the mixing unit 60, and then the bubbles Incorporates a high-quality mixed material mixed with any one or more of silica fume and metakaolin, latex, polymer, and coloring materials in the ordinary concrete containing, and mixed with the mixing unit 60, high-performance concrete After that generated, and it is discharged to the upper surface of pump car bottom layer 210 of the supply and pressure feed tube 51 two-layer concrete (200 ') via a detachably mounted syotting guide member 70 to the 50.

Here, it is preferable that the advanced mixed material in which any one or more of the silica fume and metakaolin, latex, polymer, and coloring material are mixed is mixed in an amount of 2 to 20 parts by weight based on 100 parts by weight of the cement for forming the ordinary concrete. Do. This is because when it is smaller than each range of the high-grade mixed material, high strength and high durability falls, and when it exceeds the above range, the city park price rises while the high strength and high durability does not appear higher, and slump is reduced to increase adhesion. .

When the high-performance concrete mixed with the bubble and the advanced mixed material is discharged to the upper surface of the lower layer 210 through the shorting guide member 70, the high-performance concrete mixed with the bubble and the high-grade mixed material supplied to the shorting guide member 71 When the inside is penetrated, the diameter of the center portion is smaller than the diameter of the inlet / outlet is supplied to the shorting guide body 71 formed at the same time and the pressure is generated while compressing, via the central portion of the shorting guide body 71 than the diameter of the center portion When the high-performance concrete mixed with air bubbles and high-grade mixed material is discharged to the outlet of the large diameter shorting guide body 71, the compressed air having a high pressure of 5 atm or higher is radially inclined on the outer circumferential surface of the shorting guide body 71. While being supplied to 72, it is vortexed to the outlet of the shorting guide body 71 to be discharged.

At this time, the high-performance concrete mixed with the compressed air, air bubbles and high-grade mixed material is spread by the spray method as well as when the high-performance concrete is mixed with the compressed air, air bubbles and high-grade mixed material by the spray method, while the compressed air and high-performance concrete collide with each other A large amount of bubbles contained in the high-performance concrete is dissipated, and the slump is reduced by the dissipation of the bubbles, the high-performance concrete is shotcrete on the upper surface of the lower layer 210 to form the upper layer 220, the upper layer 220 of the lower layer 210 Even if it is formed thinner than the thickness, it is possible to secure the same high strength and high durability as the structure poured with high-performance concrete, and thus, the city park value is reduced and economical as compared to the concrete pavement 100 with high-performance concrete mixed with advanced mixed materials. Will be able to secure.

Table 2 shows the test results by mixing 27% of the bubbles per unit volume in ordinary concrete with a mixing strength of 27MPa and slump of 70 ~ 80mm. The slump increased from 70mm in normal concrete to 260mm after bubble mixing, and decreased to 150mm after adding 8% of silica fume powder to cement. After slumping, it became a high-performance concrete of zero slump. The amount of air was 5% in ordinary concrete, increased to 27% after bubble mixing, and decreased to 21% after adding silica fume powder, and 5% after shortening.

As mentioned above, high-performance concrete is formed by adding powdered silica fume to ordinary concrete, which has a large slump by foam mixing of 27% by volume, and high-performance concrete having good adhesion by reducing water-binder ratio by adding silica fume of powder. Will be obtained.

TABLE 2

As a result of mixing and foaming bubbles and silica fume

Item	Ordinary concrete	After mixing 27% of bubbles	After mixing silica fume	After shorting
Slump (mm)	70	260	150	0
Air volume (%)	5	27	21	5

Here, among the advanced mixed materials, iron oxide and carbon black of the coloring material are mixed in an amount of 1 to 8 parts by weight based on 100 parts by weight of the cement forming the normal concrete, as shown in FIG. This is because the saturation point of color development is reached at 5 to 8%, and the color concentration rapidly rises between 1 to 3%. Since the particle size of the pigment is smaller than that of cement, the amount of concrete is increased by mixing the pigment, and eventually, the water-cement ratio increases, so that the strength is generally decreased, but up to 5-6% of the cement before and after the concrete is hardened. Since there is little effect on the physical properties, it is preferable not to add more than 8% in terms of economical efficiency as the color saturation is 5-8%.

The high-performance concrete mixed with the air bubbles and high-grade / low-grade materials is shotcrete in a circle on the pavement surface 100, which tightly fills the bottom of the reinforcing member as well as the general pavement, dissipating air bubbles under high pressure and air pressure. Shotcrete doesn't need extra compaction. In general, the compaction rods are installed in the paving equipment at intervals of 300 mm to vibrate with vibration of 12,000 RPM. This concrete internal vibration compaction function is a major cause of the weight of the paving equipment. Therefore, the shotcrete No compaction is required, making the packaging equipment lighter.

The concrete pavement is being constructed on the basis of 100 ㎥ of concrete pouring per unit time. The general shotcrete equipment has a low concrete casting capacity per unit time, so it is difficult to be applied to concrete pavement construction. However, the present invention introduces a concrete pump car and attaches a shorting guide member to the end thereof so that the high-performance concrete mixed with air bubbles and low / high grade mixed materials is shotcrete. If so, it will have sufficient capacity for laying concrete.

In addition, as shown in Figure 17 to 18, when the lower layer 210 and the upper layer 220 of the concrete pavement 200 and the two-layer concrete pavement 200 'is formed by the above process, the concrete internal vibration is required Finished with a light weight slip form paver to keep it level.

In the present invention, the above embodiment is an example, and the present invention is not limited thereto. Anything that has substantially the same configuration as the technical idea described in the claims of the present invention and achieves the same effect will be included in the technical scope of the present invention.

Claims

Reinforcing the pavement surface on which the concrete pavement is constructed with a reinforcing member;

Mixing water, cement, and aggregate at a predetermined ratio to produce and transport the ordinary concrete having a compressive strength of 21 to 30 MPa;

Mixing the bubbles and the lower mixed material into the ordinary concrete and mixing the mixed parts to form high-performance concrete;

Mixing bubbles and a high-grade mixed material into the ordinary concrete and mixing the mixed parts to form high-performance concrete;

The high performance concrete formed by mixing the lower mixed material is shotcrete on the pavement surface through the shorting guide member to form a lower layer, and the high performance concrete formed by mixing the advanced mixed material is shotcrete on the upper surface of the lower layer through the shorting guide member to form the upper layer. Forming a concrete pavement;

Comprising the step of finishing the concrete pavement surface,

When the high-performance concrete mixed with the air bubbles and the low / high-grade mixed material is discharged to the shorting guide member, the shotcrete is reduced so that the slump is reduced while dissipating the air bubbles contained in the high-performance concrete by blowing high-pressure air of 5 atm or more Concrete pavement construction method using bubble shotcrete.
The method according to claim 1, wherein the lower mixed material,

Concrete packing construction method using foam shotcrete, characterized in that formed by mixing any one or more of fly ash, slag powder, stone powder.
The method according to claim 2,

The low-grade mixed material, concrete packaging construction method using foam shot concrete, characterized in that the mixture is mixed 3 to 30 parts by weight based on 100 parts by weight of the cement to form the concrete.
The method according to claim 1, wherein the advanced mixed material,

Concrete packaging method using foam shotcrete, characterized in that formed by mixing any one or more of silica fume and metakaolin, latex, polymer, coloring materials.
The method according to claim 4,

The advanced mixed material, concrete packaging construction method using a foam shot concrete, characterized in that the mixture is mixed by 2 to 20 parts by weight based on 100 parts by weight of the cement to form the concrete.
The method according to claim 4, wherein the coloring material,

Concrete packaging construction method using foam shotcrete, characterized in that any one of iron oxide and carbon black or mixed iron oxide and carbon black.
The method according to claim 6,

The coloring material is a concrete paving method using a foam shot concrete, characterized in that the mixing of 1 to 8 parts by weight based on 100 parts by weight of cement to form the normal concrete.
The method according to claim 1,

The upper layer is concrete packaging construction method using foam shotcrete, characterized in that formed thinner than the thickness of the lower layer.
The method according to claim 1, The mixing unit,

A shaft which rotates with the power of a motor in a ready-mixed concrete truck into which the ordinary concrete is injected;

At least one stage radially formed on the shaft and the concrete packaging method using a foam shot concrete, characterized in that it comprises a mixing member for mixing the normal concrete and bubbles, mixed materials and coloring materials while rotating in the rotational direction of the shaft.
The method of claim 1, wherein the shorting guide member,

High-performance concrete mixed with air bubbles and low-grade / high-grade mixed materials in the common concrete and color concrete are penetrated inside and discharged so that the diameter of the center portion is smaller than the diameter of the inlet / outlet of each concrete inlet / outlet. Shorting guide body;

Bubble shotcrete, characterized in that it comprises an air supply hole penetrated through the shorting guide member to supply a high-pressure air of 5 atm or more to reduce the amount of air while dissipating the bubbles contained in each concrete flowing into the shorting guide body Concrete paving method using.
The method of claim 10, wherein the air supply hole,

Concrete packaging method using the foam shotcrete, characterized in that formed on the outer circumferential surface of the shorting guide body radially inclined.
The method of claim 1, wherein in the step of finishing the concrete paving top surface,

Concrete packaging method using the foam shotcrete characterized in that the upper surface of the upper layer is finished to maintain the horizontal level with a lightweight slip form paver (slip form paver) that does not require concrete internal vibration.