KR100714437B1 - Water leakage induction method of construction for expansion joint and crack of concrete structure - Google Patents

Abstract

The disclosed invention relates to a leak induction method for expansion joints and cracks of a concrete structure induced at the same time to prevent leakage through expansion flow joints and cracks generated during construction of concrete structures such as general buildings, tunnels, Forming a groove by cutting a construction target surface such as a flow joint or a crack; A chipping process of removing and refining the protruding surface protruding from the cut groove surface and removing foreign substances adhering to the surface; Applying a liquid waterproofing material to the groove surface smoothed through chipping; Installing a drainage induction pipe to cover the expansion flow joint part or the crack part inside the groove to which the waterproofing material is applied; Filling a high-strength mortar in the groove in which the drain induction pipe is installed, embedding the drain induction pipe inside the groove, and simultaneously recovering the cut section; Applying a secondary waterproofing material to the mortar surface after the mortar curing; Applying an adhesive along both edges of the cut groove after the application of the second waterproofing material; Adhering a high elastic waterproof sheet onto the applied adhesive to cover a construction site; And applying the adhesive once again along both edges of the waterproof sheet bonded to the construction site to finish.

Concrete structure, expansion flow joint, crack, leakage induction

Description

Water leakage induction method of construction for expansion joint and crack of Concrete structure

1 is a cross-sectional view of the construction of the leak repair method using a conventional packing material.

Figure 2 is a process diagram of the leak induction method for the concrete structure expansion flow joints and cracks according to the present invention.

Figure 3a to 3i is a construction cross-sectional view showing each process in order according to the present invention concrete structure leakage induction method.

Figure 4 is a construction example applying the construction method according to the invention to the arched tunnel.

<Description of Signs of Major Parts of Drawings>

1 ... concrete structure

10 ... Home

20 ... liquid waterproof material

30.Drainage Induction Pipe

40 ... Mortal

50 ... 2nd waterproof

60,80 ... Adhesive

70 ... waterproof sheet

The present invention relates to a concrete structure leak induction method, and in particular, at the same time blocking the leakage through the expansion joint (MOVEMENT JOINT or EXPANSION JOINT) and crack (CRACK) site generated during the construction of concrete structures, such as general buildings, tunnels The present invention relates to a leak induction method for expansion joints and cracks of concrete structures.

In general, concrete structures continuously shrink and expand depending on other conditions such as curing, temperature, vibration, and ground movement. Since the contraction and expansion will have a destructive effect on the entire structure, the expansion flow joint (MOVEMENT JOINT or EXPANSION JOINT) is provided to buffer it. This mitigates the destructive effects of the structure, but leakage is inevitable through the joints. In the case of severe leaks, aging and deterioration of the structure may be promoted, and even damage and collapse may be caused. In particular, in tanks such as drainage basins, enormous loss of treasury may occur due to leakage of purified drinking water.

In order to solve the above problems, a method of injecting a curable epoxy resin into a flexible flow joint or filling a foamed resin has been proposed. However, this method is also ineffective and recently, a method of repairing using a packing material having excellent elasticity has been proposed. This method is used as shown in FIG. 1.

According to the leak repair method using the conventional packing material shown in Figure 1, the inner wall 100 of the tunnel 100 cracks or expansion flow joints to excavate to a predetermined depth to form a groove 102, this groove 102 Repairing is made by installing the packing material 103 with excellent elasticity in the process, and then pouring the non-contraction concrete 104 to finish.

However, such a conventional repair method has an effect of preventing leakage in the short term, but it does not prevent leakage in the long term, and there is a problem in that existing cracks are further expanded or new cracks are generated when constructing a crack site.

That is, when the packing material 103 is normally used or when the tunnel inner wall 100 is deflated, the packing material 103 may be in close contact with the inside of the groove 102 so that water flowing into the crack 101 may not flow out into the tunnel inner wall 100. However, when the tunnel inner wall 100 is elongated according to the temperature change, a gap is generated between the wall surface of the groove 102 and the packing material 103, and water flowing through the cracks 101 flows through the gap to the tunnel inner wall. It will generate white, accelerate cracks and drop concrete.

In addition, there is no means for discharging the water flowing to the cracks 101 during normal or when the inner wall 100 of the tunnel contracts, and as time passes, the back pressure increases in the inner wall 100, and as a result, leaks or weaknesses occur in the weak part. There is a safety problem, such as flooding the concrete to corrode the concrete and generate new cracks.

The present invention is to solve the above-mentioned problems, the concrete flow due to leakage by effectively blocking the leakage through the expansion joint (MOVEMENT JOINT or EXPANSION JOINT) and crack (CRACK) of the concrete structure and induce drainage An object of the present invention is to provide a leak-guided method for expansion joints and cracks of concrete structures, which can prevent corrosion and cracking of structures and thereby lowering durability of the entire structure.

In order to achieve the above object, the present invention, by forming a groove by cutting the construction target surface, such as concrete expansion joints or cracks, and chipping to remove the protruding surface protruding from the cut groove surface, Applying a liquid waterproofing material to the smooth surface of the groove smoothly by chipping, install a drainage induction pipe to cover the expansion flow joints or cracks inside the grooves the waterproofing material is applied, the drainage induction pipe is installed in the groove Fill the high-strength mortar to bury the drainage guide pipe inside the groove and restore the cut section, while applying the secondary waterproofing material to the mortar surface after mortar curing, and along the both edges of the cut outside the secondary waterproofing material. At the same time as the adhesive is applied, a high-elastic waterproof sheet is adhered on the applied adhesive to cover the construction site, and finally when the adhesive is adhered to the construction site. Applying the adhesive again along both edges by waterproof sheets provides a leakage induction method for poured concrete structures such new oil joints and cracks characterized in that the finish is fully adhesive.

According to a preferred embodiment of the present invention, the drain induction pipe may be a semi-cylindrical half moon pipe.

In addition, the secondary waterproof material may be a sealant made of urethane material having excellent waterproofness and elasticity.

In addition, the adhesive used in the method may be an epoxy resin having high elasticity and excellent watertightness.

Hereinafter, with reference to the accompanying drawings will be described in detail the leakage induction method for the concrete flow expansion joints and cracks according to the present invention.

Figure 2 is a flow chart of the leak-induction method for the expansion and expansion joints and cracks of the concrete structure according to the present invention, the present invention is to cut the grooves by cutting the construction target surface leaks or expected concrete expansion joints or cracks Forming process (S10), a chipping process (S20) for removing and trimming the protruding surface protruding on the cut groove surface, the step of applying a liquid waterproofing material to the groove surface smoothly polished by chipping (S30) ), The step of installing the drainage induction pipe so as to cover the expansion flow joints or cracks inside the groove coated with the waterproofing material (S40), filling the high-intensity mortar in the groove in which the drainage induction pipe is installed, the drainage induction pipe inside the groove A process of restoring the cut section at the same time as embedding (S50), a process of applying a secondary waterproofing material on the surface of the mortar after mortar hardening (S60), both edges of the outer groove cut after the second waterproofing material In order to apply the adhesive, at the same time, the high elastic waterproof sheet is adhered to the applied adhesive to cover the construction site (S70), and the adhesive sheet is again applied along both edges of the waterproof sheet bonded to the construction site. Finishing to be completely bonded (S80) is included.

Each process will be described in more detail with reference to the accompanying drawings.

3A to 3I are construction cross-sectional views sequentially showing each process according to the present invention concrete structure leakage induction method.

Referring to the accompanying drawings, when a defect occurs in the concrete surface of the concrete structure (1), concretely, when the expansion and contraction of the concrete expansion joint or crack occurs on the wall, first, as shown by the dotted line in the accompanying drawings Figure 3a After shaping the surface of the construction to form a groove, as shown in Figure 3b by chipping (Chipping) to trim the surface of the shaved groove 10 at the same time to remove the foreign matter on the construction surface.

Next, by applying the waterproofing material 20 to the surface of the groove 10, the surface smoothing and cleaning is completed through the chipping process, as shown in FIG. At this time, the waterproof material may be used an alkali active material excellent in reactivity with concrete.

Thereafter, a drainage induction pipe 30 is installed inside the groove to which the waterproofing material 20 is applied to cover the expansion flow joint part or the crack part as shown in FIG. 3D. In this case, in the case of the construction target tunnel or pillar, one end of the drain induction pipe is connected to the drainage channel buried along the edge of the tunnel so that the leaked index can flow to the drainage side through the drainage induction pipe.

Preferably, a semi-cylindrical half moon pipe is used as the drain induction pipe 30. This is because when the concrete joint is stretched according to the temperature change, the width of the drain induction pipe can be easily changed according to the amount of expansion and contraction, thereby effectively preventing the leakage of water through the gap between the drain induction pipe and the groove.

Subsequently, when the installation of the drainage induction pipe 30 is completed, the high strength mortar 40 is filled in the groove 10 in which the drainage induction pipe 30 is installed to bury the drainage induction pipe 30 inside the groove and cut it. Restore the cross section (see FIG. 3E).

Next, after hardening the mortar 40, the secondary waterproofing material 50 is applied to the mortar surface (see FIG. 3F). At this time, as the waterproofing material, the construction is simple and can be completely waterproof, can form a continuous waterproof layer without the joint portion, and a lightweight urethane sealant with less building load burden can be used.

In the next process, after applying the second waterproofing material 50, the adhesive 60 is applied along both edges of the cut outer groove, and at the same time, the high elastic waterproof sheet 70 is adhered on the applied adhesive to cover the construction site ( 3H), and finally, as shown in FIG. 3I, the adhesive sheet 80 is once again applied along both edges of the waterproof sheet 70 bonded to the construction site to finish the waterproof sheet so as not to fall. Here, the adhesive may be an epoxy resin having excellent adhesion.

Figure 4 is a view showing an embodiment using a construction method according to the present invention, a construction example for the arched tunnel.

As shown in FIG. 4, according to the concrete joint leakage induction structure constructed through the above process, when the groundwater leaks through the concrete joint part 1 or the crack part by the crack, the leaked water is drained. Through the induction pipe 30 can be exited to the drainage path 32 in the structure connected with the drain induction pipe 30. Therefore, the index is not accumulated in the joints and cracks of the concrete structure. Accordingly, it is possible to prevent the occurrence of additional cracks or white phenomena without causing additional cracks or white phenomena, and flooded the index to other places.

In addition, the water induction pipe 30 in the form of a half moon pipe is inserted into the groove in the compressed state in the width direction, the construction wall surface is finished through the high elastic waterproof sheet 70, the concrete structure is elongated according to the seasonal change Even if the contraction and the repetition are repeated, it can be appropriately coped with, and the leakage can be completely blocked and induced.

As described above, according to the leak-induction method for the concrete flow expansion joints and cracks of the present invention, the concrete structure, for example, to quickly send the water causing the tunnel defect to the drainage channel to effectively respond to the expansion of the tunnel inner wall As well as preventing the progress of cracking and whitening of the inner wall of the tunnel, it is also effective in preventing the occurrence of new cracking or whitening due to the flooding of the periphery of the cracked portion, and the induction drainage pipe is not exposed to the outside after construction. The beauty is very good.

What has been described above is only one embodiment for carrying out the present invention, and the present invention is not limited to the above-described embodiments, and the present invention is not limited to the scope of the present invention as claimed in the following claims. Anyone with ordinary knowledge in the field of the invention will have the technical spirit of the present invention to the extent that various modifications can be made.

Claims (4)

The grooves are formed by cutting the construction target surface such as concrete expansion joints or cracks, and after removing the protruding surface protruding from the cut groove surface, chipping the foreign material adhering to the surface, and then smoothing by chipping In the leak-induction method to install a drainage induction pipe to cover the expansion flow joint or cracks inside the groove, and to fill the cutting groove provided with the drainage induction pipe to recover the cutting groove by high-strength mortar, Firstly applying a waterproofing material of a liquid alkali active material to the surface of the smoothly-cut cutting groove, and secondly forming a waterproofing layer of urethane sealant on the mortar surface of the recovered cutting groove, and then surface of the waterproofing layer. Covering the waterproof sheet in the water, and inducing leak to the concrete flow expansion joints and cracks, characterized in that it comprises the step of adhering the waterproof sheet by applying an adhesive to the two edges of the waterproof sheet in two steps Method. delete delete delete

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