KR101390028B1 - Test specimen of the leak repair materials - Google Patents

Abstract

The present invention relates to a performance specimen of a structure leakage repair material and, more specifically, to a performance specimen of a structure leakage repair material capable of ensuring objective test reliability and public confidence about a performance test of the leakage repair material by providing a standard performance specimen to use the leakage repair material with strong adhesive used be used in the leakage repair of a structure under various conditions such as temperature-dependent performance, permeability resistance performance, behavior corresponding performance, etc.

Description

{TEST SPECIMEN OF THE LEAK REPAIR MATERIALS}

The present invention relates to a performance test body for a structural leakage water repairing material, and more particularly, to a leakage test waterproofing material for use in repairing a leakage of a structure, in accordance with various test conditions such as temperature dependence performance, permeability resistance, The present invention relates to a performance test body for a structural leakage-repairing material, which provides an objective test reliability and thus a public confidence in the performance test of a leakage-repairing material by providing a standardized performance test body.

Generally, civil engineering structures are subjected to various forces such as self weight, changes in groundwater level, and flow of soil. Such a displacement stress causes serious problems such as deforming, collapsing, or vibrating the structure. Therefore, research, planning, research, design, analysis and evaluation are performed to provide the most economical strength and function required for the structure.

On the other hand, since concrete structures such as roof slabs, roofs, basements of buildings, or various fluid storage tanks are insufficient in watertightness, rainwater or groundwater can permeate, thereby deteriorating the bonding force of concrete itself, Cracks are generated in the concrete due to the volume change and the life of the building is shortened.

Therefore, waterproofing is very important to prevent water such as rainwater or ground water from flowing through cracks of concrete.

In addition, leaking repair materials are used for the purpose of repairing joint cracks and joints where leaks occur in roofs, outer walls, and floors of concrete underground structures and buildings.

The leaking water repair material serves as a basis for judging whether or not the leaking water repairing material can be applied to real life by evaluating performance to some extent with respect to the resistance that acts inside or outside the structure.

In other words, it is performed under the performance test condition of the leak water repair material based on the resistance to the underground structure where the leakage of the structure mainly occurs.

For example, in the case of an underground structure, the performance test body into which the leakage repairing material is injected is always maintained in a wet state by the ground water contained in the soil, and the wet test is performed on the performance test body .

In addition, the outer wall of the underground structure is subjected to the permeability resistance performance of the performance test body according to the environmental conditions in which the external earth pressure is always operated.

In addition, considering the vibration caused by earthquake, flow, earthquake, and other external impacts, the performance of the performance test body is evaluated according to the environmental conditions acting on the underground structure.

Also, according to the environmental condition due to the loss of the soil, the performance test body is subjected to underwater storm resistance.

In addition, the chemical resistance of the chemical components contained in the soil is evaluated to determine the degree of adaptability to the leachate repair material.

In addition, the temperature dependency performance is performed depending on the degree of adaptability to the change temperature due to the internal temperature of the structure or the external temperature difference.

In addition, various performance tests can be carried out to determine whether the leakage water repair material can effectively respond to the resistance that can act on the structure, thereby judging whether the leakage water repair material is safe or not.

Such leaking repair materials of the above-mentioned performance test body are required to undergo the test of the items specified in Korean Industrial Standard KS F 4935. Namely, Korean Industrial Standard KS F 4935 specification is divided into permeability resistance, wet side adhesion, structural response, water resistance, chemical resistance, and temperature dependency.

As shown in FIG. 1, a conventional performance test body used for the above performance test is composed of a lower plate 1, a lower mortar 2 (hereinafter referred to as " lower mortar 2 " An upper mortar 5 provided below the upper plate 4 and a lower mortar 5 provided between the upper mortar 5 and the upper mortar 5 A plurality of spacers 6 spaced apart from one another by a predetermined distance and spaced apart from each other by a predetermined distance; a nonwoven fabric 7 provided between the lower plate 1 and the lower mortar 2; A sealing portion 8 formed at an outer periphery of the upper and lower mortars 2 and 5 so as to maintain airtightness and a taping 9 for sealing the outer periphery so as to fill the leaked spaces between the upper and lower mortars 2 and 5 .

In the performance test body constructed as described above, the tapping 9 is removed after a predetermined time has elapsed after injecting the leakage repairing material into the taping 9 formed on the side surfaces of the upper and lower mortars 2 and 5 , The test is carried out in accordance with the performance test conditions.

For example, in the case of a permeability test, the performance test body filled with the leak-repair material as described above is fixed to the pressure chamber, and a water pressure of 0.3 N / mm ² is applied for 1 hour, and the presence of water is checked.

In the case of the temperature-dependent performance test, the performance test body was placed in a temperature chamber, and then the temperature was raised from 20 ° C to 60 ° C for 1 hour, maintained at 60 ° C for 10 hours, again from 60 ° C to -20 ° C for 2 hours And the process of raising the temperature from -20 ° C to 20 ° C for 1 hour is performed as one cycle, and the test process is repeated for 20 cycles.

Further, in the performance test for the behavior of the structure, the upper plate 4 or the upper mortar 5 is connected to the moving device after removing the nut fastened and fixed to the upper plate 4 of the performance test body, and then expanded to a behavior width of 0.5 mm to 5 mm And reduction are repeated 600 times at a rate of once a minute, and a test process of adding mobility is performed.

However, the conventional performance test body has a problem that the straightness of the water hole formed in the lower mortar can not be secured.

That is, when the mortar cement is formed manually by using a drill in the lower mortar, the size of the pitcher is changed by various conditions such as the rotation moment of the drill, the skill of the operator, or the curing conditions of the mortar, Or the straightness can not be guaranteed, there is a problem that the test reliability and the public confidence that an objective test result can not be obtained can not be secured.

In addition, there is a problem that the nonwoven fabric formed at the lower end of the lower mortar is damaged by water pressure or the like, and objective test results can not be guaranteed.

That is, the nonwoven fabric constituted by the lower plate and the lower mortar is configured to prevent the leakage water repair material from being discharged through the water hole of the lower mortar by water pressure or the like during the performance test process, but the leakage water repair material can not be prevented In addition, there is a problem that the nonwoven fabric is damaged by the water pressure, so that a smooth test can not be performed.

It is an object of the present invention to solve the above-mentioned problems and to provide a leakage water repellent material which is used for repairing leaks of a structure, which is used in accordance with various test conditions such as temperature dependent performance, permeability resistance, The present invention provides a performance test body of a structural leakage-repairing material which can provide objective test reliability and thus public confidence in the performance test of leakage-repairing materials.

According to another aspect of the present invention, there is provided a performance test body used for performing a performance test on a leak-repairing material used for waterproofing and repairing a structure, comprising: a flange having a plurality of fixing bolts formed on an outer periphery thereof; At least one first fastening hole and a pinhole are formed at the upper end of the flange and formed with a mortar forming groove in which the mortar is poured therein and the first housing and the second housing are respectively formed with an injection hole penetrating to the flange, A lower mold having a lower mold; A pinhole forming unit that is in close contact with a lower end of the lower forming die to form a pin into which the pinhole of the first housing is inserted to form a pinhole in the mortar test piece; An upper frame supporting bolt fastened to the first fastening hole of the first housing to support a space between the mortar test piece and the upper frame so as to form a space therebetween; A finishing cap for finishing the injection hole of the lower molding die to prevent the injection hole from being clogged when the mortar is poured, and to form a space for injecting the leak-repairing material into the cured mortar test piece; An upper frame formed at a position spaced apart from the mortar specimen by the upper frame support bolt, the upper frame being formed with a second insertion hole into which the upper frame support bolt is inserted; And a side finishing coupling which seals the outer periphery of the mortar test piece and the upper frame to pressurize the leakage water repair material to be tested under a predetermined pressure so as to be filled between the mortar test piece and the upper frame.

In the present invention, the nonwoven fabric is fixed to the lower end of the flange to prevent the leakage water repairing material from escaping through the pinhole formed in the mortar test piece by the water pressure; And a tightening plate fixed to the lower end of the flange by fastening means to support the nonwoven fabric.

In the present invention, it is preferable that the flange of the lower forming mold further includes an insertion groove having a predetermined depth into which a sealing ring is inserted to maintain a sealing force when the flange is connected to a separate device to be tested.

In the present invention, the upper frame supporting bolt includes: a first bolt fastened to the first fastening hole of the first housing; A gap maintaining housing extending from the first bolt and maintaining the gap so that the upper frame can be fixed at a position spaced apart from the mortar specimen by a predetermined height; And a second bolt extending from the gap maintaining housing and fastening the second nut to fix the position of the upper frame.

In the present invention, a curing protecting plate for reinforcing a pinhole of a pinhole forming part inserted in a lower end of a lower forming mold in a process of curing mortar inserted in a mortar forming groove of a first housing of a lower forming mold so as to maintain straightness. .

According to the present invention, by providing a standardized performance test body that can be used in accordance with various test conditions such as temperature dependency performance, permeability resistance performance, and behavior corresponding performance, It is possible to secure an objective test reliability for the performance test and the corresponding credibility.

1 is an assembly sectional view of a conventional performance test body.
Fig. 2 is an assembling process diagram of a performance test body according to the present invention. Fig.
3 is an exploded perspective view of a lower test assembly in accordance with the present invention;
Fig. 4 is an assembly flow chart of a lower test body according to the present invention. Fig.
5 is an exploded perspective view of components for a lower test piece curing step according to the present invention.
6 is a flow chart of assembling a lower test piece according to the present invention.
7 is an assembled sectional view of a lower test piece showing another embodiment of the present invention.
8 is an exploded perspective view of components for the upper test piece preparation step according to the present invention.
9 is a flow chart of assembly of upper test piece according to the present invention.
10 is a flowchart of a step of injecting a leak-repairing material according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings (the same reference numerals are used for the same components as the conventional ones, and a detailed description thereof will be omitted).

The performance test specimen of the present invention comprises a lower mold 10, a pinhole forming unit 20, an upper frame support bolt 30, a finishing cap 40, a curing protecting plate 50, an upper frame 70 A nonwoven fabric 730, an adhering plate 740, and a side coupling 80. The nonwoven fabric 730 is a nonwoven fabric.

3, the lower molding frame 10 is composed of a flange 110 and a first housing 120 provided at the center of the flange 110. As shown in FIG.

The flange 110 includes a plurality of fixing bolts 112 projecting at a predetermined height radially from the outer circumferential edge and an insertion groove 114 spaced apart from the outer circumferential edge by a predetermined distance and having a predetermined depth. The insertion groove 114 is a space into which a sealing ring is inserted so that a sealing force is maintained between the performance test body and a separate device when it is connected to a separate device adapted to the item to be tested.

The first housing 120 is formed at the center of the flange 110, that is, inside the insertion groove 114.

The first housing 120 is provided with a mortar molding groove 122 having a predetermined depth and one end of the mortar molding groove 122 for fastening and fixing one end of the upper frame supporting bolt 30 At least one first fastening hole 124, at least one pinhole 126, and an injection hole 128 passing through the flange 110 are formed at the center.

An injection nipple 130 is fixed to the injection hole 128 and has an end fixed to the lower end of the flange 110 so as to smoothly inject the leakage water repair material.

Further, it is preferable that the mortar molding groove 122 is formed so as to have a multistage step according to the shape of the mortar test piece to be formed. This is to improve the reliability of the performance test by preventing leakage of water between the mortar test piece and the mortar molding groove when a certain pressure of water pressure is applied during the performance test process.

The size and number of the pinhole 126 may be variously changed according to the performance test to be tested. The pinhole 126 is a test hole for checking the water-permeable condition of the leakage water repair material to be tested. The conditions for performing the current performance test are as follows. The pinhole 126 is defined to have a size of 3 mm and 8 to 9 places.

Further, the pinhole 126 is configured to penetrate to the flange 110.

In addition, the flange 110 and the first housing 120 may be integrally formed, separately formed, or may be integrally formed by welding or the like, or a method of fixing the flange 110 and the first housing 120 by fastening means may be used have.

The pinhole forming unit 20 includes a second flange 22, a plurality of fins 24 protruding at a predetermined height from the second flange 22, And an insertion hole (26).

The pin 24 has a size and a number corresponding to the pinhole 126 of the first housing 120.

The protruding height of the pin 24 can be adjusted by the pinhole 126 of the first housing 120 and the pinhole 126 of the first housing 120, It is irrelevant.

The nipple insertion hole 26 has a size such that the injection nipple 130 protruding from the lower end of the flange 110 of the lower molding die 10 is inserted into the pinhole molding portion 20, So that the molded portion 20 is not interfered with when it is brought into close contact with the lower end of the flange 110.

The upper frame support bolt 30 includes a first bolt 32 fastened to the first fastening hole 124 of the first housing 120 and a second bolt 32 fastened to the first fastening hole 124 of the first housing 120, And a second bolt 36 protruding at a predetermined height from the gap-maintaining housing 34. The second bolt 36 has a height equal to that of the first bolt 36,

In addition, the interval maintaining housing 34 interrupts the insertion depth of the upper frame so that a spacing space is formed between the upper frame and the mortar test piece.

The finishing cap 40 is fastened to the injection hole 128 formed in the first housing 120 of the lower molding die 10 to prevent the mortar from being inserted into the injection hole 128.

5, the curing protecting plate 50 includes a second pinhole 52 formed to penetrate the pinhole forming unit 20 so as to have a position and a size corresponding to the pin 24 of the pinhole forming unit 20, And a first insertion hole (54) formed at a position corresponding to the frame supporting bolt (30).

The first insertion hole 54 is formed to have a size such that the interval maintaining housing 34 of the upper frame support bolt 30 can be inserted so that the straightness of the pin 24 is maintained, So that the linearity of the pinhole formed in the pinhole is secured.

7, after the mortar is poured into the mortar molding groove 122 of the first housing 120, the curing protecting plate 50 is inserted into the mortar molding groove 122 of the first housing 120, A third inserting hole 56 is formed at the center so that the finishing cap 40 protruding from the upper mold 10 can be inserted and the curing protecting plate 50 is brought into close contact with the mortar placed in the lower forming mold 10 The mortar to be cured maintains the flatness, thereby improving the adhesion performance with the leakage water repair material adhered to the mortar test piece 60, thereby improving the objective reliability of the performance test.

8, the upper frame 70 includes a second insertion hole 72 formed at a position corresponding to the upper frame support bolt 30, and a second insertion hole 72 formed in the upper frame support bolt 30, And a second nut (74) fastened to the second bolt (36) to fix the upper frame (70).

The second insertion hole 72 is formed to have a size such that the second bolt 36 of the upper frame support bolt 30 is inserted. Accordingly, the upper frame 70 is seated on the upper end of the gap maintaining housing 34 of the upper frame support bolt 30, and is spaced apart from the mortar test piece 60 by a predetermined distance.

The nonwoven fabric 730 is disposed at the lower end of the lower molding die 10 to prevent the leaked water repair material from being pushed out through the pinhole of the mortar test piece 60 formed in the lower molding die 10 by pressure.

The face plate 740 is formed at the lower end of the nonwoven fabric 730 and supports the nonwoven fabric 730 so that the nonwoven fabric 730 can be stably fixed to the lower end of the lower forming die 10.

A through hole is formed at the center of the nonwoven fabric 730 and the adhered plate 740 so that the injection nipple 130 protruding from the lower end of the flange 110 of the lower molding die 10 is inserted.

At least one fastening hole is formed in the nonwoven fabric 730 and the fastening plate 740 so as to be firmly fixed to the flange 110 by bolts.

The side finishing coupling 80 is closed to seal the outer periphery of the upper frame 70 and the first housing 120.

The side finishing coupling 80 consists of first and second couplings 82 and 84, as shown in Fig. Each of the first and second couplings 82 and 84 is formed with at least one fastening hole so as to be fastened and fixed to each other by fastening means (not shown).

The assembled state of the performance test body constructed as described above is as follows.

In the lower test assembly preparing step S1, the pinhole forming unit 20 is assembled to the lower end of the flange 110 of the lower forming mold 10, as shown in Fig.

That is, the pin 24 of the pinhole forming unit 20 is inserted into the pinhole 126 formed to penetrate the flange 110, and the second surface of the pinhole forming unit 20 is formed on the bottom surface of the flange 110 So that the flange 22 is brought into close contact.

The first bolt 32 of the upper frame support bolt 30 is fastened and fixed to the first fastening hole 124 of the first housing 120 formed above the flange 110. [

Further, the finishing cap 40 is fastened to the injection hole 128 of the first housing 120. At this time, the height of the projection of the finishing cap 40 is higher than the height of the mortar test piece to be formed, and the height of the finishing cap 40 can be easily removed when the mortar test piece is cured.

The lower test piece curing step S2 is a step of curing a predetermined amount of mortar to the mortar molding groove 122 of the first housing 120 of the lower test assembly formed through the lower test assembly preparation step S1 as shown in FIG. I put it. At this time, it is preferable that the amount of the mortar to be installed is the same as the top surface of the first housing 120.

Subsequently, when the mortar is poured, the curing protecting plate 50 is positioned above the first housing 120.

The pin 24 of the pinhole forming part 20 protruded upward from the lower forming mold 10 and the pin 24 of the upper molding supporting bolt 20 are inserted into the second pinhole 52 and the first insertion hole 54 of the curing protecting plate 50, Each of the gap maintaining housings 34 of the first housing 30 is inserted and positioned above the first housing 120. At this time, the curing protecting plate 50 is seated on the upper end of the finishing cap 40 fixed to the injection hole 128, so that the first housing 120 and the curing protecting plate 50 are spaced apart from each other do.

When the curing of the mortar test piece 60 is completed by hardening of the mortar due to the elapse of a predetermined time, the demoulding operation is performed in the lower forming die 10.

In the demolding operation, the curing protecting plate 50 is removed, and the finishing cap 40 and the pinhole forming unit 20 are removed.

The mortar test piece 60 is cured in the first housing 120 of the lower mold frame 10 while the mortar test piece 60 is cured by the finishing cap 40 at the center of the mortar test piece 60 128 and a pinhole having the same size as the pin 24 of the pinhole forming portion 20 is formed at the outer periphery thereof to ensure the straightness.

The upper test piece preparing step S3 is to place the upper frame 70 above the mortar test piece 60 of the lower test piece formed through the lower test piece curing step S2 as shown in Fig. That is, the second bolt 36 of the upper frame supporting bolt 30 is inserted into the second insertion hole 72 of the upper frame 70 to push the upper frame 70 toward the mortar test piece 60. At this time, as the depth of insertion of the upper frame 70 into the gap maintaining housing 34 of the upper frame supporting bolt 30 is interrupted, the upper frame 70 is spaced apart from the mortar test piece 60 by a predetermined distance .

A second nut (74) is fastened to the second bolt (36) of the upper frame supporting bolt (30) to fix the upper frame (70) to be pressed.

Thereafter, each of the first and second couplings 82 and 84 of the side finishing coupling 80 is closely contacted with the outer periphery of the upper frame 70 and the first housing 120 and is fastened by the fastening means, The first and second couplings 82 and 84 are mutually fixed to seal the outer periphery.

Next, the nonwoven fabric 730 and the adhesive plate 740 are sequentially brought into close contact with the lower end of the flange 110 of the lower molding die 10, and then fixed by the fastening means.

The leakage water repair material injecting step S4 is a step of injecting the leakage water repair material to be tested into the test piece formed through the upper test piece preparing step S3.

This injects leak-repellent material between the upper frame 70 and the mortar test piece 60, which are closed on the sides by the side finishing coupling 80, as shown in Fig. That is, when the leak-repairing material is injected through the injection nipple 130 protruding from the lower end of the flange 110, the leak-repairing material is injected through the injection hole 128 passing through the flange 110 and the first housing 120 And injected into a hole formed at the center of the mortar test piece 60 to fill the space between the upper frame 70 and the mortar test piece 60.

Thereafter, when injection of the leak-repairing material is completed in accordance with the conditions of the performance test, a performance test body for performing the performance test of the leak-repairing material is completed by removing the side-surface finishing coupling 80.

Through the above-mentioned process, the performance test body completed is subjected to the performance test according to the test conditions such as the permeability resistance test, the temperature dependency performance test, and the behavior corresponding performance test, through the standardized components for maintaining the objective and uniform conditions The reliability of the performance test can be improved and the public confidence can be ensured.

The above description is only one example for carrying out the performance test body of the structure leakage water repairing material, and the present invention is not limited to the above embodiment. It will be appreciated by those skilled in the art that various changes may be made without departing from the spirit of the invention.

10: lower mold 110: flange
112: fixing bolt 114: insertion groove
120: first housing 122: mortar molding groove
124: first fastening hole 126: pin hole
128: Injection hole 130: Injection nipple
20: pinhole forming part 22: second flange
24: Pin 26: Nipple insertion hole
30: upper frame supporting bolt 32: first bolt
34: gap maintaining housing 36: second bolt
40: Closed cap 50: Cured protective plate
52: second pinhole 54: first insertion hole
56: Third insertion hole 60: Mortar test piece
70: upper frame 72: second insertion hole
74: second nut 730: nonwoven fabric
740: Clamping plate 80: Side finishing coupling
82: first coupling 84: second coupling

Claims (5)

In the performance test specimens used to perform the performance tests on leakproof repair materials used for waterproof repair of structures,
A flange 110 having a plurality of fixing bolts 112 formed on an outer periphery of the flange 110 and a mortar molding groove 122 positioned on an upper end of the flange 110 and having a mortar- And a first housing 120 in which an injection hole 128 is formed to penetrate to the flange 110 so that the leakage hole 124 and the pinhole 126 are formed in the lower molding die 10, and;
A pin hole 24 is formed in the mortar test piece 60 so that a pin hole is formed in the mortar test piece 60 so that the pin hole 24 of the first housing 120 is inserted into the pin hole forming part 20 );
An upper frame supporting bolt 30 which is fastened to the first fastening hole 124 of the first housing 120 and supports the mortar test piece 60 and the upper frame 70 so as to form a spacing space therebetween;
A filling cap 128 for closing the filling hole 128 of the lower forming mold 10 to prevent the filling hole 128 from being clogged when the mortar is poured and forming a space for injecting the leakproofing material into the cured mortar test piece 60, (40);
An upper frame 70 is formed at a position spaced apart from the mortar test piece 60 by the upper frame support bolt 30 by forming a second insertion hole 72 into which the upper frame support bolt 30 is inserted, ; And
The outer peripheral edge of the mortar test piece 60 and the upper frame 70 is sealed so that the leaked water repellent material to be tested is pressed at a constant pressure to be filled between the mortar test piece 60 and the upper frame 70, Coupling 80;
Wherein the structural member includes a plurality of projecting portions.
The method according to claim 1,
A nonwoven fabric 730 fixed to the lower end of the flange 110 to prevent leakage of the leakage water repair material through a pinhole formed in the mortar test piece 60 by water pressure; And
A fastening plate 740 fixed to the lower end of the flange 110 by fastening means to support the nonwoven fabric 730;
Further comprising the step of:
The method according to claim 1 or 2,
The flange 110 of the lower molding die 10 is provided with an insertion groove 114 having a predetermined depth into which a sealing ring for holding the sealing force when the sealing ring is connected is connected to a separate device to be tested.
Further comprising the step of:
[3] The apparatus according to claim 1 or 2, wherein the upper frame support bolt (30)
A first bolt (32) fastened and fixed to the first fastening hole (124) of the first housing (120);
A gap maintaining housing 34 extending from the first bolt 32 and maintaining the gap so that the upper frame 70 can be fixed at a position spaced apart from the mortar specimen 60 by a predetermined height; And
A second bolt (36) extending from the gap maintaining housing (34) and fastened with a second nut (74) to fix the position of the upper frame (70);
Wherein the structural member is made of an elastic material.
The method according to claim 1 or 2,
During the curing of the mortar poured into the mortar molding groove 122 of the first housing 120 of the lower molding frame 10, the pinhole of the pinhole molding part 20 inserted into the lower end of the lower molding frame 10, (50) for reinforcing the cushion (24) so as to maintain straightness;
Further comprising the step of:

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