KR101073879B1

KR101073879B1 - Repairing water-proofing composites for bridge and repairing water-proofing type construction method using thereof

Info

Publication number: KR101073879B1
Application number: KR1020100122210A
Authority: KR
Inventors: 김윤범; 문동규; 김현승
Original assignee: 주식회사 큐맥스
Priority date: 2010-12-02
Filing date: 2010-12-02
Publication date: 2011-10-17
Also published as: KR20110000616A

Abstract

The present invention relates to a waterproof composition for bridge repair and a bridge repair construction method using the same, and more particularly, to quickly dry during bridge repair of bridges, thereby reducing work time and cost, and minimizing traffic congestion. The present invention relates to a waterproof composition for bridge repair and a bridge construction method using the same, which can be easily and simply installed, has a high waterproofing effect, and prevents phenomena and has excellent resistance.
According to the present invention, a waterproofing composition for bridge repair and a bridge repair method using the same, comprising: a first dissolving step of dissolving styrene-butadiene-styrene in toluene; And a primer manufacturing step of preparing a primer by adding calcium carbonate and pigment to the solution prepared in the first dissolving step and mixing the same. It provides a waterproofing composition for bridge repair.

Description

REPAIRING WATER-PROOFING COMPOSITES FOR BRIDGE AND REPAIRING WATER-PROOFING TYPE CONSTRUCTION METHOD USING THEREOF}

The present invention relates to a waterproof composition for bridge repair and a bridge repair construction method using the same, and more particularly, to quickly dry during bridge repair of bridges, thereby reducing work time and cost, and minimizing traffic congestion. The present invention relates to a waterproof composition for bridge repair and a bridge construction method using the same, which can be easily and simply installed, has a high waterproofing effect, and prevents phenomena and has excellent resistance.

In general, the concrete bridges or bridges of bridges have increased rainwater or snow removal materials and accumulate loads on the bridges as the number of common years increases. easy.

Cracks in concrete structures, etc., expand over time, resulting in a decrease in strength and life of the concrete structure. When rainwater penetrates through the gaps between asphalt void cracks, median and joints, the steel reinforces within the concrete, resulting in shortening and collapse of the structure.

Therefore, in order to prevent rainwater, snow removal agent, or the like from penetrating and deteriorating the strength and life of the concrete structure, a waterproofing agent is applied to the bridge of the concrete bridge or the structure. By applying a waterproofing agent to the intersection of the concrete structure, it is possible to prevent deterioration of the bottom plate concrete and reinforcement corrosion by water and chloride penetrating from the pavement layer.

Unlike concrete waterproofing materials used in construction and other fields, concrete crosslinking waterproofing materials are used for crosslinking in which mechanical effects such as cyclic load, vibration, shock, shear, and shrinkage and expansion due to temperature change are complicated. The layer is susceptible to damage. Repairing or reinforcing the damaged bridge waterproofing layer is not only expensive, but also causes a traffic delay by partially controlling the lanes during construction.

The present invention is to solve and solve all the problems caused by the conventional water-resistant composition for bridge repair and bridge construction method using the same,

An object of the present invention is to provide a waterproof construction for bridge repair and bridge construction method using the same can be reduced in time and cost, and can minimize traffic congestion by quickly drying during bridge repair.

It is another object of the present invention to provide a waterproof composition for bridge repair and a bridge construction method using the same, which can be easily and simply installed, has a high waterproofing effect, and prevents the release phenomenon and has excellent resistance.

According to the present invention for achieving the above object in the waterproofing composition for bridge repair and bridge construction repair method using the same, styrene-butadiene-styrene (Styrene Butadiene Styrene) in a toluene (Toluene) first dissolution step ; And a primer manufacturing step of preparing a primer by adding calcium carbonate and pigment to the solution prepared in the first dissolving step and mixing the same. It provides a waterproofing composition for bridge repair.

Styrene-butadiene-styrene may be 5 to 20 parts by weight, toluene may be configured to use 60 to 90 parts by weight.

On the other hand, according to the present invention, a waterproofing composition for bridge repair and bridge construction method using the same, a second dissolution step of dissolving styrene-butadiene-styrene in toluene; A third dissolving step of dissolving asphalt (Asphalt) and a phenol resin in the dissolving solution prepared in the second dissolving step; And a top coat manufacturing step of preparing a top coat by adding calcium carbonate and pigment to the solution prepared in the third dissolving step and mixing the pigment. It provides a waterproofing composition for bridge repair.

Styrene-butadiene-styrene 20 to 35 parts by weight, toluene may be configured to use 40 to 70 parts by weight.

Asphalt is 5 to 20 parts by weight, phenol resin may be configured to use 1 to 6 parts by weight.

5 to 20 parts by weight of calcium carbonate and 0.5 to 2.5 parts by weight of pigment may be configured to be used.

On the other hand, according to the present invention, the waterproof composition for bridge repair and bridge construction method using the same, primer layer forming step of forming a primer layer by applying the primer according to claim 6 on the bridge; A top coat layer forming step of applying a top coat according to claim 6 on the primer layer to form a top coat layer; And a paving layer forming step of forming a paving layer made of any one or two of asphalt, concrete, and asphalt concrete on the top coat layer. Provides a bridge repair method comprising a.

According to the waterproofing composition for bridge repair according to the present invention and the bridge repair construction method using the same, the bridge is quickly dried during the bridge repair, thereby reducing work time and cost, and minimizing traffic congestion.

In addition, the present invention can be easily and simply installed, has a high waterproof effect, there is an effect of preventing the release phenomenon and excellent resistance.

1 is a cross-sectional view showing a procedure for performing bridge repair construction using a waterproofing composition for bridge repair according to an embodiment of the present invention.

Hereinafter, with reference to the drawings will be described in detail. However, these drawings are for illustrative purposes only and the present invention is not limited thereto.

Before applying the primer for repairing the bridges, first adjust the lower limbs, ie, flattening and latencies of the bridges using a planer, and then using the hand grinder to lay the beams at the barrier and median connection. Remove the turn. In addition, if there is a latent, dusty, grease, etc. attached to the concrete bridge, it may adversely affect the adhesion performance of the waterproof layer, so it must be removed with a hammer drill, hammer, chisel, grinder, and the like. Then, dust or foreign matter generated after adjusting the lower limb is removed with an air compressor or a broom. In particular, defect repair involves the removal of ASCON and partial adjustment of the lower limb.

Referring to Figure 1, the bridge repair construction using the bridge construction waterproofing repair according to an embodiment of the present invention is largely the primer layer 20 forming step, the top coat layer 30 forming step and the packaging layer 40 forming step It is configured to include.

In the primer layer 20 forming step, the primer layer 20 is formed by applying a primer (product name PECKOTE-II G) to the concrete bridge from which the asphalt concrete and the waterproof layer are removed to repair the bridge of the concrete bridge 10. The primer layer 20 is to secure the adhesive force with the waterproofing material that may occur due to the foreign matter remaining on the bridge.

First, the manufacturing method of the primer (product name PECKOTE-II G) apply | coated on the concrete bridge | cross_section is demonstrated.

The primer is prepared through the first dissolution step and the primer preparation step.

In the first dissolution step, a block copolymer obtained by polymerizing butadiene and styrene in an organic solvent, and has a linear or radial structure. Styrene-butadiene-styrene (hereinafter referred to as SBS), a thermoplastic elastomer having excellent deformation recovery properties, is introduced into toluene and dissolved therein.

For example, in a vessel with a stirrer, SBS is added to toluene at room temperature and stirred to dissolve. At this time, SBS (SBS) 5 to 20 parts by weight, toluene may be used 60 to 90 parts by weight, more preferably 10 to 15 parts by weight of SBS (SBS), 70 to 80 parts by weight of toluene. good. Here, if the SBS (SBS) is added in excess of 20 parts by weight due to the high viscosity is not possible to work, there is a possibility of peeling off rather less absorption into the concrete part. In addition, when the amount is less than 5 parts by weight, the low viscosity of the product deteriorates the storage properties, the adhesive force is lowered and the possibility of peeling off the waterproof layer is increased.

Next, in the primer preparation step, calcium carbonate and pigment are added to a solution prepared in the first dissolution step, that is, a solution in which SBS is dissolved in toluene, and mixed to prepare a primer. do.

In the first dissolution step, SBS is added to toluene, and then stirred for about 40 to 80 minutes to completely dissolve SBS. After visually confirming this, calcium carbonate and pigment were added to the solution at room temperature and mixed to prepare a primer.

Calcium carbonate fills the fine pores of the concrete and serves as a filler to suppress the generation of air pockets, and the pigment serves to give a color. The color is distinguished when the primer layer 20 is formed by applying a primer. By separating the application site and the uncoated area to be evenly applied with the thickness control.

It is preferable to use 5-20 weight part, especially 10-15 weight part of calcium carbonate. When the calcium carbonate is added in excess of 20 parts by weight, it is difficult to expect the elasticity of the primer, and if it is added in less than 5 parts by weight, it does not serve as a filler.

And it is preferable to use 0.5-2.5 weight part, especially 1-2 weight part of pigments, It is not good that pigment itself is an expensive product and there are many addition amounts. If the pigment is used at less than 0.5 parts by weight, it cannot give the required color, and if it is used at more than 2.5 parts, it increases the price of the product and acts as a cause of lowering the strength, elongation and weather resistance of the primer. Done. Here, in order to prevent the dust of the pigment, the pigment is not added to the solution in the primer preparation step, but is added to toluene before SBS in the first dissolution step, and then the solution is prepared by adding and stirring SBS. can do.

After adding calcium carbonate and pigment, the mixture is mixed for about 40 to 80 minutes to check the absence of lumps, and then packaged in a predetermined container to complete the preparation of the primer.

Here, the stirrer used for the preparation of the primer is preferably operated at a stirring speed of 600rpm or more and 1,000rpm or less. When the speed of the stirrer is less than 600rpm, the dissolution time of SBS takes a long time due to the decrease in the rotational speed, and the spraying ability of the filler and the pigment may be reduced, causing lumps. In addition, when the speed of the stirrer exceeds 1,000rpm, the temperature rises rapidly due to the rapid stirring speed, thereby increasing the volatilization rate of toluene to increase the severe smell and fire risk.

The primer prepared in this way is to check the dry state of the cross-section to form a primer layer 20 by applying with a roller, brush, spray equipment and the like. At this time, about 0.2 ~ 0.3Kg / m ² is used as a primer applied to the cross, curing time is 10 ~ 20 minutes as a standard at 20 ℃, determined in consideration of temperature, wind, dry contact time.

Next, after confirming the dry state of the primer layer 20, a top coat (上途劑, product name PECKOTE-II S) is evenly applied on the primer layer 20, using a substantially 1.5 ~ 1.8kg / m ² The forming of the top coat layer 30 to form the top coat layer 30 as a waterproof layer is performed.

The manufacturing method of the coating agent (product name PECKOTE-II S) applied on the primer layer 20 includes a second dissolving step, a third dissolving step, and a preparing of the coating agent.

In the second dissolution step, SBS is added to toluene at room temperature in a container with a stirrer in the same manner as in the first dissolution step of the above-described preparation of the primer, and about 80 to 130 minutes at a stirring speed of 600 rpm or more and 1,000 rpm or less. It is dissolved by stirring. At this time, 20 to 35 parts by weight of SBS (SBS) used in the second dissolution step, 40 to 70 parts by weight of toluene, more preferably 25 to 30 parts by weight of SBS (SBS), 50 to 60 toluene It is better to use parts by weight. At this time, if the SBS (SBS) is added more than 35 parts by weight due to the high viscosity is impossible to manufacture and construction work, when less than 20 parts by weight it is difficult to exhibit the performance of the waterproof material.

In the third dissolving step, asphalt and phenolic resins are used to increase adhesion between the primer and the concrete layer in the dissolution solution prepared in the second dissolving step, that is, a solution in which SBS is dissolved in toluene. It is dissolved by adding (Phenol resin). Here, 5 to 20 parts by weight of asphalt, 1 to 6 parts by weight of phenol resin is used, 10 to 15 parts by weight of asphalt, and more preferably 2 to 5 parts by weight of phenol resin. If asphalt is added in less than 5 parts by weight, the adhesive strength is lowered, and if it is added in excess of 20 parts by weight, workability deteriorates. In addition, in the case of the phenolic resin is less than 2 parts by weight it is difficult to ensure the alkali resistance characteristics, when added to more than 5 parts by weight there is a problem that workability deteriorates.

As described above, the asphalt and the phenol resin are sequentially added in the third dissolving step, stirred for about 40 to 80 minutes, and dissolved. Then, the coating agent is mixed by adding calcium carbonate and pigment to the solution prepared by the third dissolving step. The manufacturing step is performed. In this case, as described in the preparation of the primer described above, in order to prevent dust of the pigment, the pigment may be added to toluene before SBS (SBS) in the second dissolving step, and then the solution may be prepared by adding and stirring SBS (SBS). .

On the other hand, the calcium carbonate and pigment to be added during manufacture of the coating agent is added in the same amount for the same effect as in the preparation of the primer described above, and will be omitted because it will be prepared through the same stirring process. In addition, the stirrer used in manufacturing the top coat is preferably operated at a stirring speed of 600 rpm or more and 1,000 rpm or less for the same reason as in the preparation of the primer.

The prepared top coat is formed on the primer layer 20 by checking the dry state of the primer layer 20 and then applying the coating on the primer layer 20 using various mechanisms.

Then, the top layer 30 is formed, and then the step of forming the pavement layer 40 to form the pavement layer 40 on the top layer 30 is performed.

Pavement layer 40 is made of any one or two or more of asphalt, concrete, asphalt concrete, and will usually use asphalt concrete (ascon). At this time, it is preferable to form ascon within 48 hours after forming the top coat layer 30.

On the other hand, toluene (diluent) may be used to lower the viscosity depending on the use environment and the like when using a primer (product name PECKOTE-II G) or a top coat agent (product name PECKOTE-II S).

Table 1 below is a test comparison table according to KS F 4932 standard of the cross-coated waterproofing material prescribed by the Ministry of Commerce, Industry and Energy, the test report of the cross-coated waterproofing material using the waterproofing composition for cross-linking according to an embodiment of the present invention The content of

The test method was KS F 4932 (revised November 5, 2007).

As shown in Table 1, the bridge repair waterproofing material using the bridge repair waterproofing composition according to an embodiment of the present invention takes only 6 to 12 hours to completely dry, thereby rapidly drying, thereby reducing work time and cost. It is possible to minimize traffic congestion.

In addition, through various tests, it appears to meet various quality standards as shown in Table 1, it can be seen that the effect as a waterproof material is high.

As such, those skilled in the art will appreciate that the present invention can be implemented in other specific forms without changing the technical spirit or essential features thereof.

It is therefore to be understood that the embodiments described above are to be considered in all respects as illustrative and not restrictive and the scope of the invention is indicated by the appended claims rather than the foregoing description, It is intended that all changes and modifications derived from the equivalent concept be included within the scope of the present invention.

10: concrete bridge 20: primer layer
30: top coat layer 40: packaging layer

Claims

In waterproofing composition for bridge repair,
A first dissolution step of dissolving styrene-butadiene-styrene (Styrene Butadiene Styrene) in toluene; And
A primer manufacturing step of preparing a primer by adding calcium carbonate and pigment to the solution prepared in the first dissolving step and mixing the same;
Waterproofing composition for bridge repair.

The method of claim 1,
The styrene-butadiene-styrene is 5 to 20 parts by weight, the toluene is a waterproof composition for repairing bridges, characterized in that used 60 to 90 parts by weight.

In waterproofing composition for bridge repair,
A second dissolution step of dissolving styrene-butadiene-styrene in toluene;
A third dissolving step of dissolving asphalt (Asphalt) and a phenol resin into the dissolving solution prepared in the second dissolving step; And
A top coat manufacturing step of preparing a top coat by adding calcium carbonate and a pigment to the solution prepared in the third dissolving step and mixing;
Waterproofing composition for bridge repair.

The method of claim 3, wherein
The styrene-butadiene-styrene is 20 to 35 parts by weight, the toluene is a waterproof composition for repairing bridges, characterized in that used 40 to 70 parts by weight.

The method of claim 4, wherein
The asphalt is 5 to 20 parts by weight, water resistant composition for repairing bridges, characterized in that 1 to 6 parts by weight of the phenol resin is used.

6. The method according to any one of claims 1 to 5,
The calcium carbonate is 5 to 20 parts by weight, the pigment is a waterproof composition for repairing bridges, characterized in that used 0.5 to 2.5 parts by weight.

In the bridge repair construction method,
A primer layer forming step of forming a primer layer by applying a primer according to claim 1 or 2 on a cross section;
A top coat layer forming step of applying a top coat according to any one of claims 3 to 5 on the primer layer to form a top coat layer; And
Pavement layer forming step of forming a pavement layer made of any one or two of asphalt, concrete, asphalt concrete on the top coat layer;
Bridge repair construction method comprising a.