KR101206011B1 - Constructing method of concrete pavement for forming joint using profile frame - Google Patents

Abstract

PURPOSE: A construction method of a concrete pavement for forming a joint using a profile frame is provided to improve construction performance by forming a joint using a profile frame. CONSTITUTION: A construction method of a concrete pavement for forming a joint using a profile frame is as follows. A profile frame(120) is installed on a position where a joint is to be installed. Temporary joint filler is inserted into the profile frame. When the temporary joint filler is inserted, a concrete slab(150) is formed by placing and curing concrete. The temporary joint filler is removed from the profile frame, and the removed portion is filled with a lubricant(160). Permanent joint filler(170) is inserted into the profile frame. The surface of the profile frame filled with the permanent joint filler is finished.

Description

Construction method of concrete pavement to form joint using joint frame {CONSTRUCTING METHOD OF CONCRETE PAVEMENT FOR FORMING JOINT USING PROFILE FRAME}

The present invention relates to the construction of a concrete pavement, and more specifically, to the construction of a concrete pavement to form a joint using a profile frame and a temporary joint for construction when forming a joint on the concrete pavement. It is about a method.

In general, highways or special roads are divided into asphalt pavement and concrete pavement. Asphalt pavement roads are cheap construction cost and good ride comfort, but the strength is weak, there is a disadvantage that the road is often damaged during use, repair work. In addition, the concrete pavement has the advantage of low maintenance costs because the construction cost is expensive and the ride comfort is slightly reduced, while the strength is strong and less damage to the road when used. In addition, such a concrete road has a problem that the length is elongated and contracted by heat, the length of the concrete road is finely changed in accordance with the change of the ambient temperature may damage the road.

In the case of such concrete pavement, joints having a predetermined width and depth are formed in order to prevent the road from being damaged by extension and contraction due to temperature change. The joint is formed of a horizontal joint which is cut out at a predetermined interval across the horizontal direction of the road surface, and a vertical joint which is cut out at a predetermined interval with the vertical direction of the road surface perpendicular to the horizontal joint.

In other words, the concrete structure is cracked due to the material properties of shrinkage expansion as the temperature changes, it is known that the cracking increases because the shrinkage expansion ratio increases in proportion to the length of the concrete structure. For this reason, large concrete structures with long lengths form joints at appropriate intervals, thereby separating them into several unit concrete structures, preventing cracks in the separated unit concrete structures themselves, and also It responds to the behavior that occurs when shrinking and expanding with temperature changes.

1A and 1B are photographs illustrating a joint of a general concrete pavement.

As shown in Figure 1a and 1b, the horizontal joint 20 and the vertical joint 30, which is dug into the concrete slab 11 of the general concrete pavement 10 is a viscous and viscous liquid joint material such as silicone By being injected and filled, it prevents rain or snow from flowing into it. In other words, when rainwater or snow flows into the horizontal joint 20 and the vertical joint 30, the concrete interior remains wet and degrades durability, and the wet state freezes in winter to expand its volume while expanding the concrete road ( Since the crack is generated in 10), these joints 20 and 30 are for preventing this.

Such a profile is divided into an injection profile and an elastic profile, and the characteristics of the maintenance work standard are as follows.

Injection joints are divided into room temperature type polyurethane, heating type rubber asphalt type and room temperature type high elastic silicone type. The injection-type joint material of the room temperature type polyurethane system is a two-component type (topic + hardener), needs to be mixed in the field, needs an adhesive (Primer) construction, and needs curing. In addition, the heated rubber asphalt injection joints need to maintain the high temperature (170-220) of the material at work, and need a backing agent that can withstand high temperatures, require sophisticated injection equipment and skilled technology, and have a high curing rate. It is fast. In addition, the room temperature type high elastic silicone injection joint material is easy to use as a one-component type, has excellent elasticity of -50% to 100%, exhibits excellent adhesion without a primer, and has heat resistance and cold resistance of -55 to 150. Although it has, there is a characteristic that curing is necessary.

By the way, since the injection joint is constructed by injecting a viscous and viscous liquid joint material such as silicone, there is a problem of controlling the use of the road until the liquid joint material is hardened, and the joint of the liquid Ash must be mixed with the backing agent and adhesive to the silicone to reinforce the viscosity and tack, so that the compounding process is cumbersome and construction restrictions occur.

In addition, during rainy weather, the road surface of the concrete road is wet, which lowers the adhesiveness of the liquid joint material, so there is a problem in that work is practically impossible. In addition, since the worker directly injects liquid joint material into the horizontal joint and the vertical joint at the site, it cannot guarantee homogeneous quality, and it is inconvenient because it is weak in durability and needs to be repaired at predetermined intervals. There is a problem that the management cost is increased.

On the other hand, the molding joint material is simple in the process can minimize the working time, adhesive and curing is unnecessary, it can ensure the quality due to factory manufacturing. In addition, when the joint is replaced, the work is easy, and the width of the horizontal joint, for example, the width of 6mm to 8mm is required.

On the other hand, as the prior art, the Republic of Korea Patent No. 10-419123 discloses an invention named "fixing device for expansion joints" is described with reference to FIG.

2 is a view showing the expansion joint fixing device according to the prior art.

Referring to FIG. 2, the expansion joint fixing device 50 according to the related art includes one assembly member 51, the other assembly member 52, the expansion joint 53, and the expansion joint fixing groove 54. It includes.

One side assembly member 51 is provided with a fixed plate extending vertically to one end of the horizontal ground plate, and the first and second horizontal partitions protruding up and down parallel to the inner surface of the fixed plate by a certain distance from the upper end It has a fitting groove part partitioned as a plate.

The other side assembly member 52 has a fixed plate extending vertically to one side end of the horizontal ground plate to correspond to the one side assembly member 41, and is vertically mounted, the engaging stone protruding to be fitted to the fitting groove in the inner surface of the fixed plate Have wealth

At this time, the expansion joint fixing groove 54 is formed in the concave in the upper portion of the inner side and the one side and the other assembling members 51, 52 are assembled, the expansion joint 53 is inserted.

In the case of the expansion joint fixing device 50 according to the prior art, by inserting the expansion joints 53 as one side and the other assembling members (51, 52) to be fixed to the formwork 40, the concrete structure When the expansion joints are installed between the joints, it is possible to obtain the expansion joints excellent in compliance with the expansion and expansion between the concrete structures to be constructed.

However, the expansion joint fixing device according to the prior art, the structure is complicated, the construction property of the concrete pavement road is poor, and also the construction of the concrete slab is easy after the expansion joint is fixed to the expansion joint fixing device in advance. There was a problem that not.

1) Republic of Korea Patent No. 10-419123 (filed date: November 20, 2001), the name of the invention: "fixing device for expansion joints" 2) Republic of Korea Patent No. 10-536368 (application date: May 13, 2004), the title of the invention: "Joint construction method of concrete road" 3) Republic of Korea Patent No. 10-918774 (Application Date: August 07, 2007), the title of the invention: "Joint guide device and construction method" 4) Republic of Korea Patent Publication No. 2010-111003 (published: October 14, 2010), the title of the invention: "Injection joints and its construction method" 5) Republic of Korea Patent Publication No. 2009-43631 (published: May 07, 2009), the title of the invention: "Joint repair construction method of concrete road" 6) Republic of Korea Patent Publication No. 2008-97070 (application date: November 04, 2008), the title of the invention: "apparatus and method for constructing the filling material for concrete molding joints" 7) Republic of Korea Patent No. 10-1060508 (application date: April 5, 2011), the name of the invention: "Concrete composition for road paving and patching and road paving and patching method using the same" 8) Republic of Korea Patent No. 10-788021 (Application Date: October 2, 2006), the name of the invention: "Concrete penetration type waterproofing agent and waterproofing method of concrete structures using the same" 9) Republic of Korea Registered Patent No. 10-1035616 (application date: April 13, 2010), the title of the invention: "Waterproof method using the penetration type waterproofing agent"

Technical problem to be solved by the present invention for solving the above-described problems, to form a joint using a joint frame, which can improve the workability of the concrete pavement by installing a joint frame when forming the joint of the concrete pavement It is to provide a construction method of concrete pavement.

Another technical problem to be achieved by the present invention is to construct a concrete pavement using a joint frame, which can be installed without setting the height of the concrete pavement by constructing a concrete slab based on the height of the joint frame of the concrete pavement It is to provide a construction method.

Another technical problem to be achieved by the present invention is to construct a concrete pavement by using a joint frame, which can be paved uniformly in thin layers by constructing polymer paving concrete on the basis of the joint frame, the construction method on the concrete pavement It is to provide.

As a means for achieving the above technical problem, the construction method of the concrete pavement road to form the joint using the joint frame according to the present invention, in the construction method of the concrete pavement road to form the joint on the concrete slab, a) Installing a joint frame at a joint installation position on a substrate; b) inserting a preformed construction temporary joint material into the joint frame; c) forming a concrete slab by performing a paving operation and a curing operation in a state in which the temporary temporary joint material for the construction is inserted into the joint frame; d) removing the temporary temporary joint material for the construction from the joint frame, and filling a lubricating material in the shrinkage of the package; e) inserting a permanent joint in the joint frame; And f) finishing the joint on the concrete slab by finishing the surface in a state where the permanent joint is inserted into the joint frame, wherein the concrete slab is constructed of polymer paving concrete. .

Here, in the step a) using the joint frame fixing member, characterized in that for fixing the joint on the base layer.

Here, the joint slab of step c) is embedded in the concrete slab, the concrete slab is characterized in that the construction based on the height of the joint frame.

Here, the construction temporary joint member and the permanent joint member is inserted into the joint frame in a pre-formed state, the construction temporary joint member is a bulk joint member without a cell (Cell) serving as a drain hole, the permanent joint member It may be a honeycomb joint having three to six cells serving as drains.

Here, the permanent joint of step e) is characterized in that the compression insert is installed in the joint frame.

Here, the concrete slab, 5 to 7% of the emulsion curing agent PVAc (polyvinylacetate), 0.1 to 0.2% of the defoaming material, other additives of 0.1 to 0.2% stabilizer and dispersion, and 92.6 to 94.8% of water It is characterized by being blended.

Here, in the step c) is characterized in that the self-leveling (Self leveling) by giving a vibration to the bottom of the base when the concrete is poured.

In the step c), before the concrete is placed, a fiber reinforcement cord yarn mesh is installed on the base layer to remove bubbles.

According to the present invention, it is possible to improve the workability of the concrete pavement by installing and installing a joint frame when forming the joint of the concrete pavement. In other words, when the concrete slab is poured, the paving equipment or the worker recovers even after stepping on it, so the finishing work is easy.

According to the present invention, by constructing the concrete slab on the basis of the height of the joint frame can be installed without setting the height of the concrete pavement separately. That is, the concrete slab casting height can be easily installed because the work is to be made according to the height of the joints without separately.

According to the present invention, by constructing the polymer paving concrete on the basis of the joint frame, the paving thickness can be paved uniformly in a thin layer. For example, the packaging thickness can be packaged in a thin layer of about 4 cm using the polymer's high modulus, flexural strength and tensile strength.

1A and 1B are photographs illustrating a joint of a general concrete road.
2 is a view showing the expansion joint fixing device according to the prior art.
3 is a view showing a concrete pavement structure using a joint frame according to an embodiment of the present invention.
Figure 4 is a process flow diagram illustrating a construction method of a concrete pavement road to form a joint using a joint frame according to an embodiment of the present invention.
5a to 5f are views illustrating a construction process of concrete pavement using a joint frame according to an embodiment of the present invention, respectively.
6 is a view showing a specimen for concrete pavement using a joint frame according to an embodiment of the present invention.
7a to 7e are photographs showing an experimental device for a concrete pavement specimen using a joint frame according to an embodiment of the present invention, respectively.
8 is a photograph showing the bubble phenomenon of the PVAc emulsion in the concrete pavement specimen using a joint frame according to an embodiment of the present invention.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding other components unless specifically stated otherwise.

3 is a view showing a concrete road structure using a joint frame according to an embodiment of the present invention.

Referring to Figure 3, the concrete road structure 100 using a joint frame according to an embodiment of the present invention, the base layer 110, the joint frame 120, the joint frame fixing member 140, concrete slab 150, A temporary temporary joint member 130 including a lubricant 160 and a permanent joint member 170 and also being temporarily inserted into the joint member 120 and then removed before inserting the permanent joint member 170. It includes.

Concrete road structure 100 using a joint frame according to an embodiment of the present invention, the concrete slab 150 is constructed on the base layer 110, the permanent joint in the joint frame 120 installed on the concrete slab 150 The joint is installed by inserting the ash 170.

Specifically, the joint frame 120 is installed on the base 110 to insert the temporary temporary joint member 130 and the permanent joint member 170 for construction. In this case, the joint frame fixing member 140 is used to fix the joint frame 120 on the base layer 110.

Construction temporary joint material 130 is temporarily inserted into the joint frame 120 to be removed before inserting the permanent joint material (170).

The concrete slab 150 is constructed through a paving and curing work in the state in which the temporary temporary joint material 130 for construction is temporarily inserted into the joint frame 120.

Lubricant 160 is filled in the shrinkage of the pavement of the concrete slab 150.

The permanent joint member 170 is inserted into the joint frame 120 after the temporary joint member 130 is temporarily inserted into the joint frame 120 is removed.

In the concrete road structure 100 using the joint frame according to an embodiment of the present invention, when the joint is formed in advance using the permanent joint material 170, the lubricant 160 in the pavement shrinkage when the concrete slab 150 is formed Since it is difficult to fill the construction, using the temporary joint member 130 for construction in advance to form the joint slab 120 to form a concrete slab 150, and then remove the temporary joint member 130 for construction.

Figure 4 is a process flow diagram of a construction method of a concrete pavement road to form a joint using a joint frame according to an embodiment of the present invention, Figures 5a to 5f are concrete roads using a joint frame according to an embodiment of the present invention, respectively Drawings illustrating the construction process.

Referring to Figure 4, the construction method of the concrete pavement road to form the joint using the joint frame according to an embodiment of the present invention, first, the joint frame 120 is installed at the joint installation position on the base layer 110 ( S110 ). At this time, as shown in Figure 5a, the joint frame 120 is to be installed in advance before concrete placement, specifically, after fixing using the joint frame fixing member 140, the joint installation position on the base layer 110 Is installed on.

Next, the temporary temporary joint member 130 for construction is inserted into the joint frame 120 ( S120 ). Specifically, as shown in Figure 5b, the construction temporary joint member 130 is inserted into the joint frame 120 in a preformed state, the construction temporary joint member 130 serves as a drain It may be a bulk-type joint without a cell. Accordingly, when the concrete slab is poured, the paving equipment or the worker recovers even after stepping on it, thereby facilitating the finishing work.

Next, the concrete slab 150 is constructed by performing the paving and curing operations ( S130 ). Specifically, as shown in FIG. 5C, the concrete slab 150 is constructed by carrying out packaging and curing work in the state in which the temporary joint material 130 for construction is inserted into the joint frame 120. At this time, by performing the pavement and curing work in the state in which the temporary joint member 130 for construction is inserted into the joint frame 120, according to the concrete pavement by installing the joint frame when forming the joint pavement of the concrete pavement The workability can be improved. Here, the concrete slab 150 is constructed of a polymer (Polymer) paving concrete, a detailed description of the polymer will be described later with reference to FIGS.

For example, the concrete slab 150, PVAc (polyvinylacetate) of 5-7% emulsion curing agent, 0.1-0.2% defoaming material, 0.1-0.2% stabilizer and dispersion of other additives, and 92.6- 94.8% of water is combined. At this time, the level of the base can be self-leveling (Self leveling) by vibrating the bottom of the base when the concrete is placed, and also by installing a cord reinforcing material (Cord Yarn Mesh) on the base before the concrete is bubbled It is preferable to remove.

In detail, the joint frame 120 is embedded in the concrete slab 150, and the concrete slab 150 is constructed based on the height of the joint frame 120. That is, according to the embodiment of the present invention, by constructing the concrete slab on the basis of the height of the joint frame can be installed without setting the height of the concrete pavement separately. Accordingly, the concrete slab casting height can be easily installed because it is necessary to work according to the joint height without separately setting the height.

Next, the temporary temporary joint member 130 is inserted into the joint frame 120 is removed, and the lubricant 160 is filled in the shrinkage of the package ( S140 ). Specifically, as shown in FIG. 5D, after removing the temporary temporary joint material 130 for the construction from the joint frame 120, the lubricant 160 is filled in the shrinkage of the package.

Next, the permanent joint 170 is inserted into the joint frame 120 ( S150 ). At this time, the permanent joint 170 is installed by compression. Specifically, as shown in FIG. 5E, the permanent joint 170 is inserted into the joint frame 120 in the state where the lubricant 160 is filled in the shrinkage of the package. Here, the permanent joint member 170 is inserted into the joint frame 120 in a preformed state, and may be a honeycomb joint member having three to six cells serving as drains. At this time, the permanent joint member 170 is compressed and installed in the joint frame 120.

Finally, the surface of the concrete slab 150 is finished in the state in which the permanent joint material 170 is inserted into the joint frame 120 and completes the joint work ( S160 ). Specifically, as shown in Figure 5f, by inserting the permanent joint 170 in the joint frame 120 after finishing the surface of the concrete slab 150, the joint is formed on the concrete pavement. .

According to an embodiment of the present invention, by constructing a concrete paving concrete on the basis of the joint frame, it is possible to uniformly pack the paving thickness in a thin layer. For example, the packaging thickness can be packaged in a thin layer of about 4 cm using the polymer's high modulus, flexural strength and tensile strength.

On the other hand, the test specimen for concrete pavement using the joint frame according to the embodiment of the present invention, is formed in the mixing ratio as shown in Table 1. For example, the components of the PVAc solution used in the specimen 200 are formed of 58.3% PVAc, 41.4% water, 0.1% additives (stabilizers, dispersants, etc.) and other 0.2% Si components.

6 is a view showing a specimen for a concrete pavement using a joint frame according to an embodiment of the present invention.

6, a) shows the concrete pavement specimen 200, FIG. 6 b) shows a slump cone, and c) of FIG. 6 shows a slump value. For example, the specimen for concrete pavement 200 is formed to a height of 30cm. Using the concrete pavement specimen 200 is to perform a slump measurement, air volume measurement, compressive strength measurement, tensile strength measurement, bending strength measurement and elastic modulus measurement.

For example, the slump value (slump value) refers to the value expressed in centimeters of the concrete settled down when the slump test is performed, for example, to fill the slump cone shown in b) of Figure 6 with the unconsolidated concrete When demolding, the amount of falling down due to its own weight is expressed as a value measured by. The slump test refers to a test for measuring the fluidity of concrete by slump cone. The purpose of this slump test is to measure the flexibility of the concrete, to measure the workability during transport and pouring, and to measure the viscosity and the difficulty of separating the concrete.

7A to 7E are photographs showing an experimental apparatus for a test specimen for concrete roads using a joint frame according to an embodiment of the present invention, respectively, FIG. 7A shows an apparatus for measuring air volume, and FIG. 7B shows an apparatus for measuring compressive strength. 7c shows a tensile strength measuring apparatus, FIG. 7d shows a bending strength measuring apparatus, and FIG. 7e shows an elastic modulus measuring apparatus. At this time, Table 2 shows the results according to the mixing ratio for the specimen for concrete pavement using the joint frame according to an embodiment of the present invention.

As shown in the above results, the comprehensive results when the polymer content is blended at a blending ratio of about 6% show the best results. Therefore, the mixing ratio of the concrete pavement is shown in Table 3. For example, the concrete slab 150, PVAc (polyvinylacetate) of 5-7% emulsion curing agent, 0.1-0.2% defoaming material, 0.1-0.2% stabilizer and dispersion of other additives, and 92.6- 94.8% of water is combined.

Specifically, the amount of air in the concrete has a great influence on the durability, strength, workability, etc. of the concrete, and is a very important factor in the quality control of the concrete. In general, the higher the polymer content in concrete, the more air entrained.

In the above results, when no antifoaming material was added, the air volume was about 2 times higher. For example, the 12% polymer content shows about 15% air volume, and thus the amount of air can be reduced by about half by using a defoaming material.

However, in the above results, the maximum compressive strength, tensile strength, and flexural strength were found in the polymer content range of 6%, but the drop in 12% also decreased due to the increase in the amount of air in the concrete. The results are low.

As a result, the polymer paving concrete according to the present invention can be paved in a thin layer of about 4cm by using high elastic modulus, flexural strength, and tensile strength, and thus, the vibrator is used in the poured concrete during the concrete pouring in the paving method. However, due to the thin thickness, it is difficult to use the vibrator inside the concrete. In order to solve this problem, it is possible to expect the effect of self leveling effect and improvement of water density by giving vibration to the bottom of the base during pouring.

In addition, Figure 8 is a photograph showing the bubble phenomenon of PVAc emulsion in the concrete road specimen using a joint frame according to an embodiment of the present invention, in the case of the above-mentioned air amount, the cord yarn mesh (Cord Yarn Mesh) on the substrate before casting It can be installed to eliminate bubbles, remove condensation and prevent cracking.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

100: concrete road
110: substrate
120: joint
130: temporary joint for construction
140: joint frame fixing member
150: concrete slab
160: lubricant
170: permanent joint
200: specimen

Claims (9)

In the construction method of the concrete pavement to form a joint on the concrete slab,
a) installing the joint frame at the joint installation position on the substrate;
b) inserting a temporary joint material for construction into the joint frame;
c) forming a concrete slab by performing a paving operation and a curing operation in a state in which the temporary temporary joint material for the construction is inserted into the joint frame;
d) removing the temporary temporary joint material for the construction from the joint frame, and filling a lubricating material in the shrinkage of the package;
e) inserting a permanent joint in the joint frame; And
f) finishing the joint on the concrete slab by finishing the surface in the state where the permanent joint is inserted into the joint frame;
Including,
The concrete slab is a construction method of the concrete pavement road to form a joint using a joint frame, characterized in that the construction is made of polymer (Polymer) paving concrete. The method of claim 1,
Construction method of the concrete pavement road to form a joint using the joint frame, characterized in that for fixing the joint on the base layer using the joint frame fixing member in step a). The method of claim 1,
Construction method of the concrete pavement to form a joint using the joint frame, characterized in that the joint slab of step c) is embedded in the concrete slab, the concrete slab is constructed based on the height of the joint frame. . The method of claim 1,
The construction temporary joint member and the permanent joint member is inserted into the joint frame in a pre-molded state, the construction temporary joint member is a bulk joint member without a cell (Cell) that serves as a drain, each of the permanent joint member Construction method of the concrete pavement road to form a joint using a joint frame, characterized in that the honeycomb joint having three to six cells (Cell) to play a role. The method of claim 1,
The construction of the concrete pavement road to form a joint using a joint frame, characterized in that the permanent joint of step e) is compressed and inserted into the joint frame. The method of claim 1,
The concrete slab is composed of 5-7% emulsion curing agent PVAc (polyvinylacetate), 0.1-0.2% defoaming material, 0.1-0.2% stabilizer and dispersion of other additives, and 92.6-94.8% water Construction method of the concrete pavement road to form a joint using a joint frame, characterized in that. The method of claim 1,
Construction method of the concrete pavement road to form a joint using the joint frame, characterized in that the self-leveling (Self leveling) by vibrating the bottom of the base when the concrete is placed in the step c). The method of claim 1,
Construction method of the concrete pavement road to form a joint using a joint frame, characterized in that to remove the air bubbles by installing a cord reinforcement (Cord Yarn Mesh) on the base layer before the concrete is poured in step c). The concrete pavement structure constructed by the construction method of the concrete pavement to form a joint using the joint frame of any one of claims 1 to 8.

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