KR101826242B1 - Construction sysetm for using low fluidity mortar and construction method thereof - Google Patents

Abstract

According to an embodiment of the present invention, a low-fluidity mortar construction system comprises: a mortar pouring apparatus arranged in at least one construction place among coastal construction, underwater construction, ocean construction, marine construction, harbor construction, river construction, dam construction, and reservoir construction, and formed to pour low-fluidity mortar on a point where construction work is required; and a mortar supply apparatus arranged on a position spaced from the mortar pouring apparatus, and formed to supply the low-fluidity mortar to the mortar pouring apparatus. Therefore, since the low-fluidity mortar is supplied to the mortar pouring apparatus arranged on the position separated from the mortar supply apparatus by the mortar supply apparatus, an additional apparatus for mixing or supplying the low-fluidity mortar does not need to be installed at the construction place.

Description

TECHNICAL FIELD [0001] The present invention relates to a low fluidity mortar construction system and a method of constructing the same. BACKGROUND OF THE INVENTION < RTI ID = 0.0 >

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a low-flow mortar construction system and a method of constructing the system, and more particularly, to a low-flow mortar And a method of constructing the system.

Generally, there is a restriction that the mortar construction work in the ocean or reservoir can not completely eliminate contact between water and mortar. Therefore, when general mortar is used for the mortar construction work, a phenomenon occurs that the cement paste in the mortar is loosened and dispersed in the mortar or the constituent material is separated due to contact between ordinary mortar and water.

Therefore, as mentioned above, in the construction in contact with water, since it is not possible to use ordinary mortar, low-flow mortar should be used. Low fluidity mortar has excellent material separation resistance to minimize material separation during contact with water, low possibility of occurrence of bleeding phenomenon, and remarkably prevents water pollution at construction site.

In recent years, regulations and regulations have been tightened to use only low-flow mortar for construction where water contact is essential. Therefore, low-fluidity mortar for use in an environment in which water is in contact as described above has been actively researched and developed.

For example, Korean Patent No. 10-1609697 (entitled " Cement mortar composition for separating underwater fire and method for repairing concrete structures using the same, date: 2013.03.31 "), And which can form a stable concrete structure in water and can obtain an effect of preventing water contamination by excellent cohesive force.

In addition, Korean Patent No. 10-1372312 (entitled Underwater concrete composition and artificial fish manufactured by the same, date: 2014.03.04) discloses that the separability of materials in which the constituent materials of underwater concrete are separated by their own weight differences A concrete composition for an underwater concrete structure capable of forming a uniform cured structure in water by having a sufficient adhesive strength, compressive strength and bending strength without being scattered in water when the underwater concrete is put into place by suppressing the penetration of water.

On the other hand, it is general that low-flow mortar has very stiff properties compared with general-purpose mortar. Due to such properties, low fluidity mortar should use special high pressure pump compared with general mortar, and the distance that can be transferred by pump transfer method is relatively short even by using special high pressure pump. That is, when the low-flow mortar is transferred by the pump press-feeding method, the fluidity of the low-flow mortar is lower than that of the general mortar, and the press-feeding distance is remarkably reduced.

The construction site of the low-flow mortar frequently occurs far away from the supply location of the low-flow mortar due to the geographical characteristics or limitations of the oceans, reservoirs, rivers, and the like. For example, the site of low-flow mortar may be in the ocean far from the ground or in the center of a large river. In this case, even if the mixing site of the low-flowable mortar is placed on the ground close to the installation site, the distance between the installation site and the mixing site becomes long and it is impossible to supply the low-flowable mortar by the conventional pump-

Therefore, conventionally, a vessel such as a barge is floated on the ocean or a river, or a separate structure such as a pier is made, and a mixing site of a low-flow mortar is installed on the ship or a structure. When the mixing site of the low-flowable mortar is provided as described above, it is possible to place the mixing site of the low-flowable mortar and the site of construction at very close positions, but the mixing material of the low-flowable mortar is continuously used There is a problem that must be supplied.

In addition, since the conventional method is a structure in which devices for mixing, supplying, and constructing low-flow mortar are installed together at the periphery of the construction site, due to the environmental constraints of the construction site such as the ocean and river or reservoir, There is a problem that the period significantly increases. That is, the time required to install a ship or structure for installing each structure is further increased, and the construction period is remarkably increased, and the construction cost is greatly increased by additionally consuming the construction cost of a structure such as a ship loan or a pier. In addition, there is a problem that the cost and time for demolishing a ship or a structure installed in the construction site are further consumed even when the construction work of the low fluidity mortar is completed.

Embodiments of the present invention provide a low fluidity mortar construction system capable of smoothly supplying a low fluidity mortar to a construction site at a location far from a construction site and a method of constructing the system.

In addition, the embodiment of the present invention provides a low-fluidity mortar construction system and a method of constructing the system, which can easily press-feed a low-flowable mortar to a far-site construction site by a pump-feeding method.

Also, the embodiment of the present invention is a low-fluidity mortar construction system capable of optimizing both the supplying performance and the putting performance of the low-flowable mortar by easily controlling the fluidity of the low-flowable mortar to a size suitable for transportation or pouring, and a construction method of the system .

According to an embodiment of the present invention, there is provided a mortar pouring apparatus which is disposed at a construction site requiring construction of a low-flowable mortar and pours low-flowable mortar, a mortar pouring apparatus disposed at a position distant from the construction site, A mortar supply device for supplying the mortar and a low-fluidity mortar including a press-feed pipe for connecting the mortar supply device and the mortar pouring device to transfer the low-flowable mortar supplied by the mortar supply device to the mortar pouring device in a press- A mortar construction system can be provided.
Here, the mortar supplying apparatus may supply a low-flowable mortar by adding a fluidity-increasing admixture for increasing the fluidity of the low-flowable mortar so that the low-flowable mortar is smoothly fed through the pressure-feeding pipe.
The low-flowable mortar construction system according to an embodiment of the present invention is characterized in that the low-flowable mortar disposed at the construction site together with the mortar pouring apparatus and installed by the mortar pouring apparatus is provided with the flowability- And a flowability adjusting device for adding a fluidity reducing admixture for reducing the fluidity of the low-flowable mortar added with the admixture for flowability increasing supplied through the pressure-feeding pipe to the mortar pouring device.
Further, the mortar pouring apparatus may be provided with the low-flowable mortar to which the fluidity reducing admixture is added by the flow control apparatus.

According to an embodiment of the present invention, there is provided a mortar pouring apparatus which is disposed in a construction site where construction of a low-flowable mortar is required and in which the low-flow mortar is poured, and a mortar pouring apparatus disposed at a distance from the construction site, And a mortar supply device for supplying the low-flowable mortar to the low-flow mortar construction system.

Therefore, in the present embodiment, since the low-flowable mortar is supplied to the mortar pouring apparatus disposed at a construction site far from the mortar supply apparatus by the mortar supply apparatus, the low-flowable mortar is mixed at the construction site There is no need to provide a separate device for supplying the low-flowable mortar, and the low-flowable mortar can be easily supplied from a position far from the construction site.

According to an aspect of the present invention, the mortar supply device may supply the low-flowable mortar by adding a flowability-enhancing admixture for increasing the fluidity of the low-flowable mortar when the low-flowable mortar is supplied. Therefore, in the present embodiment, the fluidity of the low-flowable mortar can be easily increased in the mortar supply apparatus, and thereby the low-flowable mortar can be supplied to a remote location by the pump pressure feeding method.

The flowability-enhancing admixture may include at least one of a lignin-based, naphthalene-based, melamine-based, or polycarboxylic-based high-performance water reducing agent.

The mortar supply device may further include a thickening agent in the low-flowable mortar to prevent separation of the low-flowable mortar added with the fluidity-increasing admixture when the low-flowable mortar is supplied. The thickener may comprise at least one thickener selected from the group consisting of cellulose, starch, and acrylic. The addition amount of the thickener may be 0.01 to 5% by weight of the cement mixed in the low-flow mortar.

According to an aspect of the present invention, there is provided a low-fluidity mortar construction system comprising: a low-fluidity mortar installation system disposed in the construction site together with the mortar pouring apparatus, the fluidity- To the mortar pouring apparatus by adding a fluidity reducing admixture for lowering the flowability of the mortar to the mortar pouring apparatus. Therefore, in the present embodiment, the fluidity of the low-flowable mortar can be easily reduced so that the flow control device is suitable for pouring the low-flowable mortar, thereby sufficiently securing the performance of pouring the low-flowable mortar .

The fluidity reducing admixture may include a plastic material or may include at least one thickener selected from the group consisting of cellulose, starch, and acrylic.

Meanwhile, the flow control device may further include a powder quick-setting admixture in the low-flow mortar to facilitate the condensation of the low-flowable mortar added with the flowability-increasing admixture supplied from the mortar supply device. The powder quick-setting admixture may be any one or a mixture of at least two of CSA (Calcium Sulfo Aluminate) fine powder, amorphous C12A7 (12CaO.7Al2O3) fine powder, gypsum powder, slaked lime powder, or alkali metal salt.

According to an aspect of the present invention, the low-flowable mortar may be manufactured at a blending ratio of 240 to 280 kg of cement, 0.84 to 1.00 m 2 of aggregate and 0.24 m 2 of water, and 0.2 to 0.4 m 2 of water.

According to an aspect of the present invention, the mortar pouring apparatus may be disposed at any one of the marine vessel and the marine structure, and the mortar pouring apparatus may be disposed on the ground.

The low fluidity mortar construction system according to the present embodiment is characterized in that the mortar supply system includes a mortar supply system for supplying the low flowable mortar supplied by the mortar supply system to the mortar installa- tion apparatus in a press- And a plurality of feed tubes arranged at predetermined intervals along the feed tube and connected to the feed tube to stably support the feed tube.

According to an aspect of the present invention, the mortar supply device includes a mortar supply tank for storing the low-flowable mortar, and a low-flowable mortar connected to the mortar supply tank and supplied to the mortar pouring device by a press- And a pressure feeding pump for providing a pressure feeding force for performing the pressure feeding.

According to an aspect of the present invention, the flow control device includes a mortar inlet connected to the pressure feeding pipe to receive the low fluidity mortar to which the fluidity increasing admixture is added from the mortar feeding device, A mortar flow passage connecting the mortar inlet portion and the mortar outlet portion, and a flowability reducing admixture to the low flowable mortar moved along the mortar flow passage, the mortar outlet portion communicating with the mortar pouring device to provide the mortar, And may be provided with an admixture supply portion to be charged.

The flow control device may further include a mortar mixing part disposed between the mortar flow passage and the mortar outflow part and promoting mixing of the low flowability mortar and the fluidity reduction admixture.

According to an aspect, the construction site may be provided at a plurality of locations, and the mortar pouring apparatus may be respectively installed at the plurality of construction sites. The mortar supply device may be connected to the mortar pouring devices individually through a press-feeding pipe so as to supply the low-flowable mortar to the mortar pouring devices.

According to another aspect of the present invention, there is provided a mortar pouring apparatus, comprising: a mortar pouring apparatus disposed at a construction site requiring low fluidity mortar construction and pouring the low flowable mortar; A method of low fluidity mortar construction by a low fluidity mortar construction system comprising a mortar supply device for supplying a mortar, the method comprising the steps of: the mortar supply device supplying the low flowable mortar to the mortar pouring device through a feed- And placing the low-flowable mortar supplied from the mortar supply device at the construction site.

In the low-fluidity mortar supplying step, the mortar supplying device may further include a flowability increasing admixture for increasing the fluidity of the low-flowable mortar and a thickening agent for preventing the material separation phenomenon of the low-flowability mortar added with the flowability increasing admixture can do. The mortar supply device may supply the fluidity-increasing admixture and the low-flowable mortar added with the thickener to the mortar pouring device.

The low fluidity mortar construction method according to the present embodiment is characterized in that a flow control device disposed at the construction site together with the mortar pouring device is installed in the low fluidity mortar to which the fluidity increasing admixture supplied from the mortar supply device is added Wherein the fluidity enhancing admixture for lowering the fluidity again and the powdery quick-setting admixture for promoting the coagulation of the low-flowable mortar added with the admixture for increasing the flowability are added, and the admixture for fluidity- And transferring the flowable mortar to the mortar pouring apparatus.
According to another aspect of the present invention, there is provided a method of manufacturing a mortar, comprising the steps of mixing a low-flowable mortar with a mortar supply device, and transferring the low-flowable mortar mixed by the mortar supply device to a construction site through a feed- Adding a fluidity-increasing admixture to the low-flowable mortar mixed with the mortar supplying device, adding a thickener to the low-flowable mortar to which the admixing agent for flowability enhancement is added, adding the thickener to the admixture for flowability- The low fluidity mortar having the thickener added thereto is fed to the fluidity regulating device disposed at the construction site through the feed pipe, and the low fluidity mortar fed through the feed pipe lowers the fluidity suitable for pouring the construction site And the flow regulating device is arranged to regulate Adding a fluidity reducing admixture to a low-flowable mortar which has been pressure-fed through a pressurized gas pipe, adding a powder quick-setting admixture to a low-flowable mortar to which the admixture for reducing fluidity is added, And providing a low fluidity mortar added with the powder accelerator to a mortar pouring apparatus disposed at the construction site, and a step of inserting the low flowable mortar added with the fluidity reducing admixture and the powder quick- The method comprising the steps of: providing a low-flow mortar;

The low fluidity mortar construction system and the construction method of the system according to the embodiments of the present invention are such that the mortar supply apparatus disposed at a place far from the construction site supplies the low flowable mortar to the mortar pouring apparatus disposed at the construction site , It is not necessary to provide the mortar supply device and the mortar installation device together at the installation site, and the mortar supply device can be disposed at a position far from the installation site. Therefore, in the present embodiment, the mortar supply device can be installed in a location optimized for the supply of the low-flow mortar without greatly influencing the environmental restrictions of the installation site.

The low fluidity mortar construction system and the construction method of the system according to the embodiments of the present invention increase the fluidity of the low fluidity mortar in the mortar supply apparatus and send the mortar to the mortar pouring apparatus. Even if it is located very far away, it is possible to supply the low-flow mortar easily and smoothly to the mortar pouring device by using the pump feeding method.

Further, the low-flow mortar construction system and the method of constructing the system according to the embodiments of the present invention reduce the flowability of the low-flow mortar having increased fluidity in the mortar supply apparatus again in the flow regulation apparatus, It is possible to appropriately adjust the size to be suitable for the placement of the low-flowable mortar, thereby sufficiently securing the casting performance of the low-flow mortar.

The low fluidity mortar construction system and the method of constructing the system according to the embodiments of the present invention can improve the fluidity of the low fluidity mortar using the admixture for increasing fluidity in the mortar supply apparatus, The flowability of the low-flow mortar can be very easily controlled by reducing the flowability of the low-flow mortar. Therefore, in this embodiment, the flowability of the low-flowable mortar can be appropriately adjusted according to the construction conditions of the low-flowable mortar, the use position, the use, and the like, thereby maximizing the construction efficiency of the low-flowable mortar.

In addition, the low fluidity mortar construction system and the construction method of the system according to the embodiments of the present invention can optimize the fluidity of the low flow mortar according to the transfer or installation of the low flow mortar, It can be pumped smoothly to a remote installation site, and a low-flow mortar can be laid in a size suitable for construction where contact with water is essential.

Further, since the low-fluidity mortar construction system and the method of constructing the low-fluidity mortar construction system according to the embodiment of the present invention are such that the pressure-feeding pipe for feeding low-flowable mortar is supported by a plurality of pressure- It is possible to effectively prevent the phenomenon of being drowned in the water or being pushed to an arbitrary position by the flow of water, and even if the length of the pressure-feeding tube becomes very long, the pressure- can do.

Also, the low-flow mortar construction system and the construction method of the system according to the embodiments of the present invention are such that the low-flow mortar and the admixture for reducing flowability are mixed by the mortar mixing section of the flow promoter, It is possible to increase the mixing efficiency and reactivity of the reducing admixture and to prevent the material separation phenomenon occurring during the long-time feeding of the low-flow mortar.

1 is a schematic illustration of a low flow mortar construction system in accordance with an embodiment of the present invention.
2 is a block diagram showing the main part of the low fluidity mortar construction system shown in FIG.
3 is a flow chart illustrating a method of low-flow mortar construction according to one embodiment of the present invention.

Hereinafter, embodiments according to the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to or limited by the embodiments. Like reference symbols in the drawings denote like elements.

FIG. 1 is a schematic view of a low fluidity mortar construction system 100 according to an embodiment of the present invention, and FIG. 2 is a structural diagram showing a main part of a low fluidity mortar construction system 100 shown in FIG. 1 .

1 and 2, a low fluidity mortar construction system 100 according to one embodiment of the present invention includes a mortar supply device 110, a flow conditioning device 120, and a mortar pouring device 130 .

The low fluidity mortar construction system 100 according to the present embodiment is a construction system used for low fluidity mortar casting such as marine construction (or marine construction), harbor construction, river construction, dam construction, or reservoir construction. However, the present invention is not limited thereto, and the low-flow mortar construction system 100 according to the present embodiment can be used for all construction in which contact with water is inevitable in the casting process.

Here, 'mortar' is not limited to a mixture of cement and sand with water, but it is defined as including cement with fine aggregate and kneading with water or concrete. Hereinafter, in this embodiment, it is explained that the low-flow mortar M1 and M2 are manufactured by blending cement (C), aggregate and clay (A), water (W), and admixture (S, T).

The low-flow mortar construction system 100 according to the present embodiment can be used to newly construct structures such as marine, river, reservoir, or lake, or to repair and reinforce existing structures. For example, the low fluidity mortar construction system 100 can be used to reinforce the ground such as marine, river, reservoir, or lake, construct and reinforce the walls and embankments of the harbor, construct and reinforce the bridge piers and dams Construction of a hydraulic structure of a reservoir, construction of a hydraulic structure, and the like. Hereinafter, in the present embodiment, for convenience of explanation, it is explained that the low fluidity mortar construction system 100 is used for the construction of reinforcing the ground of the ocean.

Referring to FIGS. 1 and 2, the mortar supply apparatus 110 may be configured to supply the first low-flowable mortar M1 to the mortar pouring apparatus 130 at a location distant from the mortar pouring apparatus 130. As shown in FIG.

The mortar supply device 110 may be disposed on the ground far from the construction site L2 where the low-flow mortar needs to be installed. This is because the mortar supply device 110 is desirably disposed at a position L1 which is advantageous for the mixing, storage and supply of the first low-flowable mortar M1, And supply is more advantageous on the ground than on the sea. Hereinafter, the place L1 where the mortar supply device 110 is installed, that is, the place L1, which is advantageous for mixing, storing, or supplying the low-flowable mortar M1, will be simply referred to as a " mortar supply site ".

The mortar supply device 110 may have the function of mixing and supplying the first low-flowable mortar M1 at the same time or may have only the function of supplying the first low-flowable mortar M1. That is, the mortar supply device 110 may directly mix the first low-flowable mortar M1 and then supply the combined first low-flowable mortar M1 to the mortar pouring device 130 of the construction site L2 . The mortar supplying apparatus 110 receives the first low-flowable mortar M 1 mixed from the outside and then transfers the received first low-flowable mortar M 1 to the mortar pouring apparatus 130 .

Hereinafter, in this embodiment, it is assumed that the mortar supply device 110 is provided simultaneously with the mixing function and the supplying function of the first low-flowable mortar M1. Therefore, it is preferable that the mortar feeder L1 is used to smoothly receive the material used for compounding the first low-flowable mortar M1 from the outside, and to select a place where the material can be safely stored. In order to smoothly supply the first low-flowable mortar M1, it is preferable that the mortar feeder L1 is located near the construction site L2 and is advantageous for the installation of a later-described infeed pipe. As described above, the mortar feeder L1 is excellent in accessibility from the outside to facilitate securing of the material, and has a waterfront close to the construction site L2 so that the first low-flowable mortar M1 can be easily pushed to the construction site L2. ≪ / RTI >

Meanwhile, the mortar supply device 110 may increase the fluidity of the first low-flowable mortar M1 by adding an admixture S for increasing the flowability when the first low-flowable mortar M1 is mixed. Thereby, the first low-fluidity mortar M1 can be transported over a long distance by the pump feeding method. As described above, the mortar supply device 110 can smoothly pump the first low-flowable mortar M1 to the construction site L2 at a remote location by the pump pressure feeding method.

For example, the mortar supply device 110 may include a mortar supply tank 112 and a pressure-feed pump 114.

In the mortar supply tank 112, the mixing, storage, and supply of the first low-flowable mortar M1 can be performed. That is, the mortar supply tank 112 can be manufactured by adding the cement (C), the aggregate and the clay (A), and the water (W) have. Further, the first low-flowable mortar M1 thus manufactured can be stored, and the first low-flowable mortar M1 can be supplied to the pressure-feed pump 114. [ The mortar supply tank 112 may be disposed in the mortar supply line L1 like the pressure feed pump 114. [

Here, the mortar supply tank 112 is composed of 240 to 280 kg of cement (C), 0.84 to 1.00 m 2 of aggregate (A) and 0.2 to 0.4 m 2 of water (W) ) Can be produced. The fluidity of the first low-fluidity mortar (M1) can be increased by adding the admixture (S) for increasing the fluidity in the mixing process of the first low-flowable mortar (M1).

The admixture (S) for increasing the fluidity is an admixture for increasing the fluidity of the first low-flowable mortar (M1) and serves to slurry the first low-flowable mortar (M1). The fluidity-increasing admixture (S) may comprise a superplasticizer. For example, the fluidity-increasing admixture (S) may comprise at least one high performance water reducing agent selected from the group consisting of lignin, naphthalene, melamine, and polycarboxylic acid.

On the other hand, in the mortar supply tank 112, in order to prevent the material separation phenomenon of the first low-flowable mortar M1 to which the fluidity-increasing admixture S is added, a thickener TH ) May be further added. The thickener (TH) may include at least one thickener selected from the group consisting of cellulose, starch, and acrylic. The addition amount of the thickener (TH) may be about 0.01 to 5% by weight of the cement (C) relative to the cement (C) blended in the first low-flowable mortar (M1).

The pressure feeding pump 114 may be configured to press-feed the first low-flowable mortar M 1 from the mortar supply tank 112 to the flow regulating device 120. The pressurization pump 114 may be connected to the mortar supply tank 112 and may be connected to the flow regulator 120 through a pressurization pipe.

The low fluidity mortar construction system 100 according to an embodiment of the present invention may further include a feed pipe 140 and a feed pipe supporting buoyant member 142.

1 and 2, the pressure-feeding pipe 140 may be formed to guide the first low-flowable mortar M1 fed by the pressure-feed pump 114 to the installation site L2. The other end of the pressure feeding pipe 140 may be connected to the mortar pouring device 130 or the flow regulating device 120 Or the like. Hereinafter, in the present embodiment, it is assumed that the other end of the pressure feeding pipe 140 is connected to the fluidity regulating device 120.

The feed pipe 140 may be formed of a pipe or a hose disposed between the feeder sheet L1 and the installation site L2. Therefore, the pressure-feeding pipe 140 can be arranged in such a structure that most of the pressure-feeding pipe 140 except the both ends connected to the fluidity controlling device 120 and the pressure-feeding pump 114 are elongated along the sea surface.

As shown in FIG. 1, the pressure-feed tube supporting buoyant body 142 may be formed to stably support the pressure feeding tube 140 disposed along the sea surface. That is, at least one of the pressure-feeding tube supporting buoyancy members 142 may be disposed between the both ends of the pressure-feeding tube 140 along the pressure-feeding tube 140, and the pressure- As shown in FIG. Therefore, the pressure-feed pipe supporting buoyant body 142 can prevent a phenomenon that the pressure-feeding pipe 140 is submerged below the sea surface due to its own weight or is arbitrarily moved by the wave of seawater. Hereinafter, in the present embodiment, it is described that the pressure-feeding tube supporting buoyant body 142 is a buoy placed on the sea surface. However, the present invention is not limited to this, and buoyancy bodies of materials and structures that can float on the sea surface are applicable.

1 and 2, the flow regulator 120 may be configured to convert the first low-flowable mortar M1 into a second low-flowable mortar M2 suitable for installation of the work station P . The flow regulator 120 may be connected to the other end of the feed pipe 140 so as to receive the first low-flowable mortar M 1 fed from the mortar feeder 110. The flow regulator 120 may be connected to one side of the mortar pouring device 130 to deliver the second low flowable mortar M2 to the mortar pouring device 130. [ If the other end of the feed pipe 140 is directly connected to the mortar pouring device 130, the flow regulating device 120 may be disposed inside the mortar pouring device 130.

The flow regulator 120 may be disposed together with the mortar pouring device 130 in a construction site L2 for the ocean floor reinforcement. In other words, the construction site L2 can be located in the sea far from the ground, and the fluidity control apparatus 120 can be installed on the ship or the sea structure disposed in the construction site L2 together with the mortar pouring apparatus 130 have.

For example, in the present embodiment, it is assumed that the flow control device 120 and the mortar pouring device 130 are installed on a ship such as a barge 102 disposed at a construction site L2. The barge 102 may be fixed at a position spaced apart from the sea level by a pillar structure installed in the construction site L2 so that the barge 102 may be shaken by waves of sea water, And can be safely supported. The arrangement of the flow regulator 120 and the mortar pouring apparatus 130 may be variously changed according to the design conditions and conditions of the low fluidity mortar construction system 100.

The flow regulator 120 may be formed to add the fluidity reducing admixture T to the first low-flowable mortar M1 to lower the fluidity of the first low-flowable mortar M1. That is, the flow regulator 120 is provided with a fluidity reducing admixture (T) to the first low-flowable mortar M1 so as to lower the fluidity of the first low-flowable mortar M1 to a level suitable for the installation work point P ) Can be added.

For example, the flow conditioning device 120 may include a mortar inlet 122, a mortar outlet 124, a mortar flow passage (not shown), and an admixture feeder 126

The mortar inlet 122 may be connected to the mortar feeder 110 to receive the first low-flowable mortar M1 from the mortar feeder 110. That is, the mortar inlet 122 may be connected to the other end of the feed pipe 140 in a communicative manner.

The mortar outlet 124 may be connected to one side of the mortar pouring device 130 to provide a low fluidity mortar M2 to the mortar pouring device 130. That is, the mortar outlet 124 may be directly connected to the mortar pouring device 130 or connected to the mortar pouring device 130 by piping.

The mortar flow passage may be formed in a passage structure between the mortar inlet portion 122 and the mortar outlet portion 124 so as to connect the mortar inlet portion 122 and the mortar outlet portion 124 in a communicative manner. Therefore, the inflow of the first low-flowable mortar M1 and the outflow of the second low-flowable mortar M2 can be carried out simultaneously while flowing continuously over the mortar inlet 122 and the mortar outlet 124 and the mortar flow passage. have.

The admixture supply unit 126 may be formed to supply the fluidity reducing admixture T to one side of the mortar flow passage. Accordingly, the admixture supply unit 126 can reduce the fluidity of the first low-flowable mortar M1 moved along the mortar flow passage to a level suitable for the installation work point P.

Here, the admixture supply unit 126 may be formed to adjust the supply amount of the fluidity reducing admixture T according to the flow amount of the first low-flowable mortar M1 flowing along the mortar flow passage. For this purpose, a flow rate sensor (not shown) for checking the flow rate of the first low-flowable mortar M1 may be installed in at least one of the mortar inlet 122 and the mortar flow passage, The supply line may be provided with a flow valve (not shown) for controlling the supply amount of the admixture for reducing fluidity according to the detection value of the flow sensor.

The above-mentioned fluidity reducing admixture (T) is an admixture for lowering the flowability of the mortar and acts to suppress the bleeding phenomenon and the material separation phenomenon by increasing the viscosity of the mortar. The fluidity reducing admixture (T) may comprise at least one of a plastic material or a thickener. For example, the thickening agent of the fluidity reducing admixture (T) may include at least one of a cellulose series, a starch series, and an acrylic series.

Meanwhile, the admixture supply unit 126 may be provided with an accelerating agent (for example, an accelerating agent) for accelerating the condensation of the second low-flowable mortar M2 to which the admixture T for flowability- AA) may be further added. The powder quick-setting admixture (AA) may be formed of any one or a mixture of at least two of CSA (Calcium Sulfo Aluminate) fine powder, amorphous C12A7 (12CaO.7Al2O3) fine powder, gypsum powder, slaked lime powder, have.

2, the flow regulator 120 regenerates the first low-flowable mortar M1 and the first low-flowable mortar M1, the fluidity-reducing admixture T, And a mortar mixing unit 128 for promoting mixing of the AA.

The mortar mixing portion 128 may be disposed between the mortar flow passage and the mortar outlet portion 124 connected to the admixture supply portion 126. Therefore, the first low-flowable mortar M1, the admixture for fluidity reduction (T), and the powder quick-setting admixture (AA) may be mixed in the mortar mixer 128. [

Since the fluidity of the first low-fluidity mortar M1 is increased due to the fluidity-increasing admixture S, the material of the first low-flowable mortar M1 may be separated depending on the load of the material, There is also a possibility that this part may occur. Therefore, the mortar mixing unit 128 may perform a function of mixing the first low-flowable mortar M1 again to prevent the material of the first low-flowable mortar M1 from being separated due to long-distance feeding.

In addition, the mortar mixing unit 128 may mix the first low-fluidity mortar M1 and the fluidity reducing agent to increase the mixing efficiency of the first low-flowable mortar M1, the fluidity reducing admixture T, (T) and powder quick-setting admixture (AA).

For example, the mortar mixing section 128 may have a mixing guide vane (not shown) projecting in a wavy line along the inner circumferential surface of the mortar flow passage. When the mortar mixer 128 is formed of a vortex-type mixing guide blade, the mixture of the first low-flowable mortar M1, the admixture T for fluidity reduction, and the powder accelerator AA is mixed with the mortar mixer 128, the first low-flowable mortar M1, the fluidity reducing admixture T and the powder accelerator AA are stirred while being swirled by the mixing guide wing in the process of passing through the first low- Can be effectively mixed.

Alternatively, the mortar mixing section 128 may include a mixing blade (not shown) rotatably disposed in the mortar flow passage, and a mixing motor (not shown) connected to the rotation axis of the mixing blade to rotate the mixing blade . When the mixing blades are rotated by the mixing motor, a mixture of the first low-flowable mortar M1, the fluidity-reducing admixture T and the powder accelerator AA passes through the mortar mixer 128, And the first low-flowable mortar M1, the fluidity-reducing admixture T and the powder quick-setting admixture AA can be effectively mixed in the process.

Alternatively, the mortar mixing unit 128 may include a mixing chamber (not shown) having a space expanded in the mortar flow passage, a first low-flowable mortar M 1 introduced into the mixing chamber, and a flowability- (Not shown) disposed in the interior of the mixing chamber to finely pulverize the mixture of powdered quick-setting admixture (T) and powder quick-setting admixture (AA). The mixture of the first low fluidity mortar M1, the fluidity reducing admixture T and the powder accelerator AA is kept in the mixing chamber for a certain period of time and mixed again, In the process, the first low-flowable mortar M1 and the fluidity-reducing admixture T can be effectively mixed.

Referring to FIGS. 1 and 2, the mortar pouring apparatus 130 may be formed to pour a second low-flowable mortar M2 supplied from the flow regulator 120 at a construction work point P of the mortar. One side of the mortar pouring apparatus 130 may be connected to be connected to the mortar outlet 124 of the flow regulator 120 to receive the low flowable mortar M 2 from the flow regulator 120.

For example, the mortar pouring apparatus 130 may include a casting pump 132 and a casting pipe 134. However, the present invention is not limited thereto, and the construction of the mortar pouring apparatus 130 may be variously changed according to the design conditions and conditions of the low fluidity mortar construction system 100. For example, the mortar pouring device 130 may include only a putting pipe 134, and the pouring pump 132 may be omitted. However, in the present embodiment, it is assumed that both the casting pump 132 and the casting pipe 134 are provided in the mortar pouring apparatus 130.

The casting pump 132 may be formed to pumping the second low-flowable mortar M2 again to pour the second low-flowable mortar M2 at the work site P. That is, the casting pump 132 may further pump the second low-flowable mortar M2 so as to have a sufficient pressure for pouring the second low-flowable mortar M2. For this purpose, the casting pump 132 may be connected to one side of the mortar pouring device 130 to which the mortar outlet 124 of the flow control device 120 is connected.

Meanwhile, the mortar pouring device 130 may be provided with a temporary storage tank for temporarily storing the second low-flowable mortar M2 provided by the flow control device 120. [ The temporary storage tank may be disposed between the outlet 124 of the flow regulator 120 and the casting pump 132.

The casting pipe 134 may be formed to guide the low-flowable mortar M2 pumped by the casting pump 132 to the work site P. That is, one end of the casting pipe 134 may be connected to the casting pump 132 of the mortar casting device 130, and the other end of the casting pipe 134 may be disposed at the construction work point P.

Meanwhile, in the low fluidity mortar construction system 100 according to the present embodiment, the construction sites L2 for marine soil construction can be formed at a plurality of locations spaced from each other according to the number of construction work sites P. In this case, the flow regulator 120 and the mortar pouring device 130 may be respectively disposed at the construction sites L2.

On the other hand, the mortar feeder L1 for installing the mortar feeder 110 is moved to the construction site L2 in accordance with the mixing state of the first low-flowable mortar M1 and the feeding environment of the first low-flowable mortar M1, As shown in FIG. Accordingly, the mortar supplying apparatus 110 can be connected to the flow regulating apparatuses 120 through the plurality of pressure feeding pipes 140, respectively, so that the plurality of the pressure feeding pumps 114 can be individually controlled, It is possible to selectively and suitably supply the first low-flowable mortar M1 to the devices 120. [ Hereinafter, in the present embodiment, for convenience of explanation, it is assumed that the mortar supply device 110 is disposed only on a single number of the mortar supply sheets L1.

The construction method and effect of the low fluidity mortar construction system 100 according to one embodiment of the present invention will be described below. 3 is a flow chart illustrating a method of low-flow mortar construction according to one embodiment of the present invention.

3, a method of constructing a low fluidity mortar construction system 100 according to an embodiment of the present invention is a method of constructing a low fluidity mortar construction system 100 in which a mortar supply apparatus 110 is connected to a mortar pouring apparatus 130 through a feed- The flow regulating device 120 regulates the flowability of the first low-flowable mortar M1 fed from the mortar feeder 110 to form the second low-flowable mortar M1, (S109 to S111) of forming the second low-flowable mortar M2 and transferring the second low-flowable mortar M2 to the mortar pouring apparatus 130, and the mortar pouring apparatus 130 installing the second low- And a step (S112 to S113) of pouring at the place L2.

3, the steps S101 to S108 of supplying the first low-flowable mortar M1 include steps S101 and S102 of installing the mortar supply device 110, at least one construction site L2 A step S104 of connecting the flow regulator 120 and the mortar pouring apparatus 130 to the flow regulator 120 and a step S104 of connecting the flow regulator 120 to the mortar supplying apparatus 110, (S105) of mixing or storing the first low-flowable mortar (M1) in the first low-flowable mortar (M1) to be supplied to the flow control device (120) And increasing the fluidity of the low-flowable mortar M1 (S106, S107).

In the steps S101 and S102 of installing the mortar supply device 110, a mortar feeder L1, which is advantageous for mixing, storing and supplying the first low-flowable mothers M1 on the basis of the construction work point P, . Then, the mortar feeder 110 is installed in the mortar feeder L1.

In the step S103 of installing the fluidity adjusting device 120 and the mortar pouring device 130, the construction site L2 corresponding to the construction work site P is selected, and the flow adjustment device 120 and the barge line 102 in which the mortar pouring device 130 is installed. The column structure is installed on the marine ground of the construction site (L2), and the barge line (102) is firmly fixed at a position spaced a certain distance from the sea surface using the column structure.

In the step S13 of connecting the flow regulator 120 and the mortar feeder 110, one end of the feed pipe 140 is connected to the feed pump 114 of the mortar feeder 110, 120 is connected to the other end of the feed pipe 140 to the mortar inlet 122. A plurality of feed tube supporting buoyancy members 142 are arranged on the sea surface along the feed tube 140 so as to be spaced apart from each other and the intermediate portion of the feed tube 140 is connected to the feed tube support buoy body 142, The feed pipe 140 is stably arranged.

In the step S105 of mixing or storing the first low-fluidity mortar M1, the mixing ratio of the cement (C) to the aggregate (A) is 0.84 to 1.00 m2 and the water (W) is 0.2 to 0.4 m2 Cement, aggregate and clay, and water to prepare a first low-flowable mortar (M1).

In steps S106 and S107 for increasing the fluidity of the first low-fluidity mortar M1, the fluidity-increasing admixture S is added in the mixing process of the first low-flowable mortar M1. When the admixture S for increasing the flowability is added in the mixing of the first low-flowable mortar M1 as described above, the fluidity of the first low-flowable mortar M1 can be increased. The first low-flowable mortar M1 manufactured as described above is stored in the mortar supply tank 112 of the mortar supply apparatus 110.

Here, the fluidity-increasing admixture (S) may include a high-performance water reducing agent. For example, the fluidity-increasing admixture (S) may include at least one of a lignin-based, naphthalene-based, melamine-based, or polycarbonate-based high-performance water reducing agent.

Meanwhile, in steps S106 and S107 for increasing the fluidity of the first low-flowable mortar M1, a thickener for preventing the material separation phenomenon of the first low-flowable mortar M1 to which the admixture S for flowability- TH) may be further added. The thickener (TH) may include at least one thickener such as cellulose, stearate, or acrylic. The amount of the thickener (TH) to be added may be in the range of 1 to 20% by weight based on the weight of the cement (C) By weight based on the total weight of the composition.

3, steps (S109 to S111) of transferring the second low-flowable mortar M2 to the mortar pouring apparatus 130 are performed using the mortar supply apparatus 110 using the first low-flowable mortar M1 (S108), and the fluidity reducing admixture (T) is added to the first low-flowable mortar (M1) in the flow regulator (120) to form the first low-flowable mortar (M1) (S109) of adjusting the fluidity of the first low-flowable mortar (M2) so that the fluidity of the first low-flowable mortar (M1) and the fluidity-increasing admixture (T) (S110, S111).

In the step S108 of feeding the first low-flowable mortar M1, the pressure-feed pump 114 pumps the first low-flowable mortar M1 and the first low-flowable mortar M1 into the flow- Compulsory pushing. That is, the pressure-feed pump 114 pumps the first low-flowable mortar M1 in the mortar supply tank 112 to the pressure-feed pipe 140, and the pumped first low-flow-rate mortar M1 passes through the pressure- To the mortar inlet 122 of the fluidity regulating device 120. As shown in FIG. At this time, since the fluidity of the first low-fluidity mortar M1 is high, the pressure-feed pump 114 can smoothly feed the first low-flowability mortar M1 to the construction site L2 at a long distance.

In steps S109 and S111 of regulating the flowability of the first low-flowable mortar M2, the flowability reducing admixture T is continuously added to the mortar flow passage through which the first low-flowable mortar M1 is moved, 1 low-fluidity mortar (M1) to the second low-flowability mortar (M2). That is, the fluidity reducing admixture T is added to the first low-flowable mortar M1 to reduce the fluidity of the first low-flowable mortar M1 to a level suitable for installation of the work site P, Thereby generating a second low-flowability mortar M2 suitable for casting the working point P.

Here, the fluidity reducing admixture (T) may include a thickener or a plastic material. For example, the thickening agent of the fluidity reducing admixture (T) may include at least one thickener of the cellulose series, the starch series, and the acrylic series.

Meanwhile, in the steps S109 and S111 of regulating the flowability of the first low-flowable mortar M2, the powdery gypsum powder M2 for promoting the coagulation of the second low-flowable mortar M2 to which the admixture T for fluidity- (AA) can be further added. The powder quick-setting admixture (AA) may be formed of any one or a mixture of at least two of CSA-based fine powder, amorphous C12A7-based fine powder, gypsum powder, slaked lime powder, and alkali metal salt.

The steps S110 and S111 of producing the second low-flowable mortar M2 by mixing the first low-flowable mortar M1 and the fluidity-increasing admixture T include mixing the fluidity-increasing admixture T and the powder- (S110) mixing the first low-flowable mortar (M1) to which the first low-flowability mortar (AA) is added and a step (S111) of producing the second low-flowable mortar (M2).
In the step S110 of mixing the first low-flowable mortar M1, the first low-flowable mortar M1, the fluidity-increasing admixture T and the powder quick-setting admixture AA can be forcibly mixed for a predetermined period of time . The step S110 of mixing the first low-flowable mortar M1 may include a step of adjusting the flowability of the first low-flowable mortar M2 and a step of injecting the second low-flowable mortar M2 into the mortar pouring device (S112) of providing the second low-flowability mortar M2 to the first low-flowable mortar M2.

That is, the step S110 of mixing the first low-flowable mortar M1 may be performed by mixing the first low-flowable mortar M1 with the mixture of the fluidity reducing admixture T and the powder quick-setting admixture AA, The mixing efficiency and reactivity of the fluidity mortar M1 with the fluidity reducing admixture T and the powder quick-setting admixture AA can be increased, and thereby the production efficiency of the second low-flowability mortar M2 can be improved. Therefore, the second low-flowable mortar M2 can be formed with a uniform quality while the generation time of the second low-flowable mortar M2 is shortened.

As shown in FIG. 3, the step (S112 to S113) of placing the second low-flowable mortar M2 at the installation site L2 includes the step of placing the second low-flowability mortar M2 having the fluidity controlled by the admixture T for increasing the flowability (S112) of providing the mortar M2 to the mortar pouring apparatus 130 and the second low-flowable mortar M2 provided from the flow control apparatus 120 using the mortar pouring apparatus 130 to the construction work point (Step S113) of inserting the light emitting diode (LED) into the light guide plate P as shown in FIG.

In step S112 of providing the second low-flowable mortar M2 to the mortar pouring apparatus 130, the second low-flowable mortar M2 generated in the flow regulating apparatus 120 is continuously supplied to the mortar pouring apparatus 130 .

In step S113 of placing the second low-fluidity mortar M2 on the work site P, the placement pump 132 pumps the low-flowable mortar M2 to place the low-flowable mortar M2 at the construction work point P through the casting pipe 134. [ At this time, since the fluidity of the low-flowable mortar M2 is very low, the low-flowable mortar M2 suppresses the bleeding phenomenon and the material separation phenomenon even when the low-flowable mortar M2 is in contact with water in the process of discharging to the construction work point P formed on the sea floor .

Although the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, And various modifications and changes may be made thereto without departing from the scope of the present invention. Accordingly, the spirit of the present invention should not be construed as being limited to the embodiments described, and all of the equivalents or equivalents of the claims, as well as the following claims, belong to the scope of the present invention .

100: Low flow mortar construction system
110: Mortar feeding device
112: Mortar supply tank
114: Pump tube pump
120: Flow regulator
122: Mortar inlet
124: Mortar outlet
126: Admixture supplier
128: mortar mixing section
130: Mortar pouring device
140:
142: Feeding tube supporting buoyancy body
M1: First low-flow mortar
M2: second low-flow mortar
S: Admixture for increasing fluidity
T: Admixture for fluidity reduction
L1: Mortar feeder
L2: Place of construction

Claims (19)

A mortar pouring device disposed in a construction site where low fluidity mortar construction is required and casting low flow mortar;
A mortar supply device disposed at a position distant from the installation site by a predetermined distance and supplying a low flowable mortar to the mortar installation device; And
And a feeding pipe connecting the mortar feeding device and the mortar pouring device so as to feed the low-flowable mortar supplied by the mortar feeding device to the mortar pouring device by a feeding method,
The mortar supply device is characterized in that a low fluidity mortar is added by adding a fluidity increasing admixture for increasing the fluidity of the low flowable mortar so that the low flowable mortar is smoothly fed through the pressure feed pipe,
The low fluidity mortar disposed in the construction site together with the mortar pouring apparatus and the low flowable mortar to which the flowability increasing admixture supplied through the pouring piping is added so as to secure the flowability suitable for pouring, Further comprising a flow control device for adding a fluidity reducing admixture for reducing the fluidity of the mortar to the mortar pouring device,
Wherein the mortar pouring apparatus is constructed by pouring a low flowable mortar to which the fluidity reducing admixture is added by the flow control apparatus.
delete The method according to claim 1,
Wherein the fluidity increasing admixture comprises at least one high-performance water reducing agent selected from the group consisting of lignin-based, naphthalene-based, melamine-based, and polycarbonate-based high performance water reducing agents.
The method according to claim 1,
Wherein the mortar supplying apparatus further comprises a low fluidity mortar construction system in which a low viscosity fluid is added to the low flowable mortar to which the fluidity increasing admixture is added in order to prevent the material separation phenomenon of the low flowable mortar added with the fluidity increasing admixture .
5. The method of claim 4,
Wherein the thickener comprises at least one thickener selected from the group consisting of cellulose, starch, and acrylic,
Wherein the amount of the thickener added is 0.01 to 5 wt% of the cement mixed with the low-flow mortar supplied by the mortar supply device.
delete The method according to claim 1,
Wherein the fluidity reducing admixture comprises a plastic material or a thickener of at least one of cellulose, starch, or acrylic.
The method according to claim 1,
The flow control device may further include a flow rate control means for controlling the flow rate of the low fluidity mortar to which the fluidity increasing admixture supplied from the mortar supply device is added, Is added to the mortar.
9. The method of claim 8,
Wherein the powder quick-setting admixture is any one of a CSA fine powder, an amorphous C12A7 fine powder, a gypsum powder, a calcium hydroxide powder, or an alkali metal salt or a mixture of at least two or more thereof.
The method according to claim 1,
Wherein the low-flow mortar is manufactured at a blending ratio of 240 to 280 kg of cement, 0.84 to 1.00 m 2 of aggregate and 0.2 to 0.4 m 2 of water, and a low-flow mortar construction system.
The method according to claim 1,
The mortar pouring apparatus is disposed in any one of marine structures and marine structures,
Wherein the mortar supply device is disposed on the ground.
12. The method of claim 11,
A plurality of feed tubes arranged at predetermined intervals along the feed tubes and connected to the feed tubes so as to stably support the feed tubes;
Further comprising a low-flow mortar construction system.
The method according to claim 1,
The mortar supply device includes:
A mortar supply tank for storing a low-flowable mortar to be supplied to the mortar pouring apparatus; And
A pressurizing pump connected to the mortar supply tank and providing a pressurizing force for feeding the low-flowable mortar stored in the mortar supply tank to the mortar pouring apparatus in a press-feeding manner;
Wherein the low-fluidity mortar construction system comprises:
The method according to claim 1,
The flow control device includes:
A mortar inlet connected to the press-feeding pipe to receive the low-flowable mortar added with the fluidity-increasing admixture from the mortar supply device;
A mortar outlet communicating with the mortar pouring device to deliver low-flow mortar used for pouring the mortar pouring device;
A mortar flow passage connecting the mortar inlet portion and the mortar outlet portion; And
An admixture supply unit for injecting the fluidity reducing admixture into the low-flowable mortar moved along the mortar flow passage;
Wherein the low fluidity mortar construction system comprises:
15. The method of claim 14,
The flow control device includes:
A mortar mixing portion disposed between the mortar flow passage and the mortar outflow portion for promoting mixing of the low flowable mortar moved along the mortar flow passage and the fluidity reducing admixture;
Further comprising a low-flow-rate mortar construction system.
The method according to claim 1,
The construction site is provided at a plurality of locations,
Wherein the mortar pouring apparatus is disposed at each of the plurality of installation sites,
Wherein the mortar supply device is connected to the mortar pouring devices individually through the pouring pipe so as to supply low-flowable mortar used for pouring the mortar pouring devices, respectively.
Wherein the mortar feeder comprises a low-flow mortar;
Adding a fluidity-increasing admixture to the low-flowable mortar blended by the mortar supply device to smoothly transfer the low-flowable mortar mixed by the mortar supply device to the installation site through the conveyance pipe in a press-feeding manner;
Adding a thickener to the low-flowable mortar to which the flowability-increasing admixture is added;
Feeding the mortar with the fluidity-increasing admixture and the low-fluidity mortar added with the thickening agent to the fluidity regulating device disposed at the construction site through the press-feeding pipe;
Adding a fluidity-reducing admixture to the low-flowable mortar which is pressure-fed through the pressure-feeding pipe by the flow-regulating device so that the low-flowable mortar pressure-fed through the pressure-feeding pipe secures low fluidity suited for pouring the construction site;
Adding a powder quick-setting admixture to the low-flowable mortar added with the fluidity-reducing admixture;
Providing the fluidity control device with the low fluidity mortar added with the fluidity reducing admixture and the powder accelerator to a mortar pouring apparatus disposed at the construction site; And
Placing the mortar pouring apparatus at the construction site with the low-fluidity mortar added with the fluidity reducing admixture and the powder quick-setting admixture;
≪ / RTI >
18. The method of claim 17,
Mixing the fluidity reducing admixture with the low-flowable mortar added with the powder quick-setting admixture between the step of adding the powder quick-setting admixture and the step of providing the low-flowable mortar to the mortar pouring apparatus;
Further comprising the steps of: delete

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