KR101739777B1 - Waterproof agent for surface of bridges and process for waterproofing surface of bridges using that - Google Patents

Abstract

The present invention relates to a bridge deck waterproof material and a bridge deck waterproofing method using the same. More specifically, the present invention relates to a bridge deck waterproof material and a bridge deck waterproofing method using the same, for forming a coating layer, which cures in a short time after the application of the bridge deck waterproof material, effectively bonds with the ground surface, and provides excellent durability and water resistance to the bridge deck, on concrete and steel plate bridge decks, thereby preventing deterioration of the bridge deck. The present invention comprises: a lower waterproof material, mixed with 91-95 wt% of 2-ethyl-2-(hydroxymethyl)-1,3-propanediol polymer and 5-9 wt% of admixture, and coated on the bridge deck; a middle waterproof material, mixed with 15-35 wt% of MMA resin, 32.5-42.5 wt% of calcium carbonate, 7.5-17.5 wt% of silica sand No. 3, and 20-30 wt% of silica sand No. 5, and coated on the lower waterproof material; and an upper waterproof material, mixed with 45-55 wt% of 2-chlorobutadiene polymer, 25-35 wt% of toluene or xylene, and 15-25 wt% of sprayed asphalt, and coated on the middle waterproof material.

Description

BACKGROUND OF THE INVENTION Field of the Invention [0001] The present invention relates to a waterproofing material for bridges and bridges,

The present invention relates to a cross-linked waterproofing material and a cross-linked waterproofing method using the same, and more particularly, to a cross-linked waterproofing method using a cross- To a cross-linked waterproofing material capable of preventing deterioration and corrosion of the cross-linked surface, and a cross-linked waterproofing method using the same.

Generally, in the case of concrete, the acid rain generated from carbon dioxide (CO2), nitrous oxide (NOx) and oxygen sulfur existing in the air penetrates and is neutralized, so that the corrosion and the deterioration of concrete are cracked and eliminated Lt; / RTI >

Particularly, the concrete top plate of the road bridge with thin structure layer is caused by vibration of tire impact and load due to sudden braking of the passing vehicle, etc., and the surface layer of the concrete of the top plate is peeled and cracked to prevent acid rain and anti- It is damaged due to leakage, corrosion and poor condition such as salt and calcium chloride penetration.

Especially, coastal bridges tend to secure the safety of bridges by treating the whole surface of bridges.

The bridges are waterproofed to prevent deterioration and cracking due to the corrosion of the reinforcing bars caused by the leakage of leaks and the neutralization of concrete in the concrete surface layer and the capillary of the bridge concrete top plate.

Cross-linked waterproofing includes hot-melt rubber asphalt, which is complemented by silicone-based permeable cross-linked waterproofing agent, rubber-based coating film waterproofing agent, rubber asphalt sheet and other disadvantages in the field adaptation of rubberized asphalt sheet- Coating with waterproofing coating and protection of waterproofing layer have been carried out since the 1980s in the United States and Canada, and similar methods have been applied recently in Korea.

However, in the case of the above-mentioned method used in Korea, it is necessary to remove the asphalt (asbestos) packed in the existing concrete top plate and to completely arrange the pavement of the faulty waterproof layer and the weak surface layer, and then apply the primer coating → the rubber asphalt coating method, In addition, it is possible to obtain a stable coating film layer by repeating the weight of the passing vehicle due to the characteristics of the road bridge due to the characteristics of the heated molten rubber asphalt used in waterproofing of bridge bridges, And the waterproof layer is not strong enough to prevent the waterproof layer from being shrunk. After the construction, the rubber asphalt coating film waterproofing agent has to be repaired due to warping, material relaxation and warping phenomenon caused by the passing vehicle. There is a demand for development of a technology that can effectively complement it.

On the other hand, in general, road surface construction finished with asphalt has a bulk packing type which is packed along the whole width of the road, and an individual packing type which is divided into each lane.

The individual packing formula is applied when the vehicle must pass by. It is one way to pack one lane first, allow the vehicles to pass along the lane, and then construct the second lane connected to the one lane later.

As described above, since the individual packing formula divided for each lane is packed together with the connecting portion between the already packed lane and the newly packed lane, the aggregate of the connecting portion is scattered or the bonding force is lowered.

In other words, since the pre-packed lasers of the pre-formed asbestos layer are hardened and hardened, the newly packed molten asbestos layer is adhered, so that the adhesive force is lowered and a minute gap is generated. The surface layer of the junction, The rainwater leaks, and the joints are gradually separated and eliminated due to the load of the vehicle, which makes it difficult to smoothly pass the vehicle.

In addition, when the existing pavement is broken, the pavement is re-installed by excavating one side of the pavement and re-installing the ascon in the excavated portion. However, this is also the case between the existing pavement and the newly packed pavement There is a problem in that a fine gap is generated in the substrate.

On the other hand, existing bridging and waterproofing technologies require complicated equipments, the construction method is difficult due to the large number of processes, and when the matrix (asphalt or concrete) is wet, most of the construction is impossible and the bonding strength between the cold matrix and hot ascon Lack.

In addition, some of the existing technologies have a problem that the dilution solvent is used, which may cause a risk of fire and safety of workers.

In order to solve the above-mentioned problems, a water-soluble composition for waterproofing a bridge waterproofing has been developed. Water-soluble polymers; And a thickener in a ratio of 1: 1: 0.06.

The background art of the present invention is disclosed in Korean Patent Laid-Open Publication No. 10-2013-0039287 (published on Apr. 19, 2013, entitled "A waterproof composition for asphalt bridging waterproofing and a bridging waterproofing method using the bridging waterproofing material formed therefrom") have.

Since the conventional cross-linked waterproofing material comprises asphalt, a water-soluble polymer and a thickener, cracks are likely to occur during the winter season, maintenance work is difficult, adhesiveness to a high-level bottom plate and a packing layer is insufficient, However, the curing time for securing the adhesion to the asphalt pavement is prolonged, and there is a problem in that the curing time is poor.

Therefore, there is a need for improvement.

The present invention relates to a cross-linked waterproofing material capable of preventing the deterioration and corrosion of a cross-section by forming a coat layer on a concrete and a steel plate cross-section, which effectively bonds with a bottom surface while curing in a short time after the cross-linked waterproofing material is applied and provides excellent durability and water resistance to the cross- The present invention has been made to solve the above problems.

The present invention relates to a waterproofing material comprising a mixture of 91 to 95% by weight of 2-ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 5 to 9% by weight of an admixture, Waterproofing material comprising 15 to 35% by weight of an MMA resin, 32.5 to 42.5% by weight of calcium carbonate, 7.5 to 17.5% by weight of silica sand No. 3, and 20 to 30% by weight of silica sand No. 5 and applied to the under waterproofing material; And 45 to 55% by weight of 2-chlorobutadiene polymer, 25 to 35% by weight of toluene or xylene and 15 to 25% by weight of sprayed asphalt, and an upper surface waterproofing material applied to the intermediate waterproofing material do.

The silica sand No. 3 of the present invention has a particle size of 1.5 to 2.4 mm, and the silica sand No. 5 has a particle size of 0.7 to 1.2 mm.

Further, the present invention provides a method of manufacturing a semiconductor device, comprising the steps of: (a) removing foreign matter remaining on a face of a bridge and performing planarization; (b) applying a lower waterproofing material comprising 91 to 95% by weight of a 2-ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 5 to 9% by weight of an admixture to a cross-section; (c) Applying a moderate waterproofing material composed of 15 to 35% by weight of MMA resin, 5 to 30% by weight of calcium carbonate, 7.5 to 17.5% by weight of silica sand No. 3 and 20 to 30% by weight of silica sand No. 5 to the undercoat waterproofing material step; And (d) applying an upper waterproofing material comprising 45 to 55% by weight of 2-chlorobutadiene polymer, 25 to 35% by weight of toluene or xylene, and 15 to 25% by weight of sprayed asphalt to the waterproofing material .

Since the cross-linked waterproofing material and the cross-linked waterproofing method using the same according to the present invention are formed by applying a primer having a waterproof function, an adhesive force and a strength recovery function of concrete, it is possible to improve the durability of the aged cross- There is an advantage.

Also, since the cross-linked waterproofing material and the cross-linked waterproofing method using the same according to the present invention are formed by applying MMA waterproofing material excellent in resistance to sulfate, salt water, adhesion strength, flexural strength and compressive strength, advantage of preventing slipping phenomenon of asphalt .

Since the cross-linked waterproofing material and cross-linked waterproofing method using the same according to the present invention are formed by applying the MMA waterproofing material having excellent curing speed, the curing is completed within 30 minutes after completion of the cross-linked waterproofing material construction, There is an advantage that quick repair is possible when necessary, and partial repair is easy.

Also, since the cross-linked waterproofing material and the cross-linked waterproofing method using the same according to the present invention are applied by coating an upper surface waterproofing material having an excellent adhesive force with asphalt, resistance to slip of asphalt in combination with the middle ground, It also acts to plastic deformation, cracks and fractures do not occur, and it is possible to omit the work of spraying asphalt asphalt during asphalt pavement, thereby saving the cost of waterproofing method.

The cross-linked waterproofing material and cross-linked waterproofing method using the cross-linked waterproofing material according to the present invention significantly reduce defects such as peeling off due to strong adhesive force, and all three layers constituting the waterproof layer are formed. There is an advantage that the waterproof performance can be maintained even if a problem occurs.

1 is a flowchart showing a cross-face waterproofing method using a cross-linked waterproofing material according to an embodiment of the present invention.
2 is a quality test inspection report of a cross-linked waterproofing material according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a cross-linked waterproofing material and a cross-linked waterproofing method using the same according to the present invention will be described with reference to the accompanying drawings.

In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are terms defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator.

Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a flowchart showing a cross-linked waterproofing method using a cross-linked waterproofing material according to an embodiment of the present invention, and FIG. 2 is a quality test report of a cross-linked waterproofing material according to an embodiment of the present invention.

1 and 2, a cross-linked waterproofing material according to an embodiment of the present invention includes 91 to 95% by weight of 2-ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 5 to 9% by weight of an admixture 15 to 35% by weight of an MMA resin, 32.5 to 42.5% by weight of calcium carbonate, 7.5 to 17.5% by weight of silica sand 3 and 20 to 30% by weight of silica sand 5, A waterproofing material to be applied to the under waterproofing material and an upper waterproofing material which is composed of 45 to 55% by weight of 2-chlorobutadiene polymer, 25 to 35% by weight of toluene or xylene and 15 to 25% by weight of sprayed asphalt, .

2-Ethyl-2- (hydroxymethyl) -1,3-propanediol polymer is also called trimethylolpropane and has a melting point of 59 ° C. It is mixed with water and alcohol at an arbitrary ratio, And is used as a waterproof material in this embodiment.

MMA resin means methyl methacrylate and is a colorless transparent liquid which is obtained by oxidizing tert-butyl alcohol (TBA) prepared from C4 oil as a raw material in gaseous state to produce methacrylic acid Followed by esterification with methanol. The waterproofing material of this embodiment is used as a composition providing waterproof function.

The 2-chlorobutadiene polymer has good weather resistance, chemical resistance, flame retardancy, low gas permeability, and high adhesive strength, and thus is used as a composition for providing a waterproof function and an adhesive function in this embodiment.

Therefore, in the present embodiment, since the three waterproof layers comprising the lower waterproofing material, the middle waterproofing material and the upper waterproofing material are formed, it is possible to effectively prevent infiltration water from entering into the face, to prevent slipping of the asphalt applied to the face waterproofing material, The adhesion between the waterproof material and the asphalt is improved, and the strength of the cross section is improved.

Silica No. 3 has a particle size of 1.5 to 2.4 mm, and Silica No. 5 has a particle size of 0.7 to 1.2 mm, which reduces pore size by a small size silica sand No. 5 to prevent infiltration of infiltration water And the effect of improving the strength of the cross-section is exhibited by the silica sand 3 having a large particle size.

The cross-linked waterproofing method using the cross-linked waterproofing material according to one embodiment of the present invention will be described as follows.

The cross-linked waterproofing method using a cross-linked waterproofing material according to an embodiment of the present invention includes a step of removing a foreign matter remaining on a cross-face and performing a planarization operation, and a step of forming a 2-Ethyl-2- (hydroxymethyl) -1,3-propanediol polymer A step of applying an undercoat waterproofing material comprising 91 to 95% by weight of an inorganic filler and 5 to 9% by weight of an admixture; and a step of applying a waterproofing agent comprising 15 to 35% by weight of MMA resin, 5 to 32% by weight of calcium carbonate, 7.5 to 17.5% And 20 to 30% by weight of silica sand No. 5 in an amount of 45 to 55% by weight of 2-chlorobutadiene polymer, 25 to 35% by weight of toluene or xylene, and 15 to 35% by weight of sprayed asphalt, And 25 wt% of the waterproofing agent.

First, the foreign material remaining on the face to be coated with the waterproof material is removed, and the protruding portion and the concave portion are flattened. Thereafter, the underwater waterproofing material is applied, the middle waterproofing material is applied to the upper surface of the underwater waterproofing material, Is applied and cured.

As described above, when the cross-linked waterproofing material is applied and after about 30 minutes, the cross-linked waterproofing material is cured and the subsequent work of applying the asphalt to the upper surface of the cross-linked waterproofing material can be performed in a short time, shortening the time required for the cross- .

As described above, since the present embodiment includes the MMA resin, the curing time is short and the bonding performance is excellent, so that even when the cross-section is partially broken, the broken portion can be effectively repaired in a short time.

In addition, since the gabion-proof waterproofing material of the present invention is excellent in elongation, it behaves together with the asphalt which is deformed according to the change of the temperature, so that cracks or fractures are not easily generated in the face.

This makes it possible to form a coating layer on the concrete and steel plate bridges to provide excellent durability and water resistance to the bridges by effectively bonding with the bridging surface while curing in a short time after the application of the bridging waterproofing material to prevent deterioration and corrosion of the bridges, It is possible to provide a bridging waterproofing method.

≪ Example 1 >

After removing the foreign materials on the cross-linked surface and performing planarization, a lower waterproofing material composed of 91 wt% of 2-Ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 9 wt% of an admixture was applied, and MMA A mixture of 15 wt% of resin, 37.5 wt% of calcium carbonate, 17.5 wt% of silica sand No. 3 and 30 wt% of silica sand No. 5 was coated on the upper surface of the middle waterproofing material and 45 wt% of 2-chlorobutadiene polymer and 35 wt% And 20% by weight of sprayed asphalt is applied and cured for 30 minutes to form a waterproof layer on the cross-linked surface.

≪ Example 2 >

After removing the foreign materials on the cross-linked surface and performing planarization, a lower waterproofing material composed of 91 wt% of 2-Ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 9 wt% of an admixture was applied, and MMA A mixture of 25 wt% of resin, 37.5 wt% of calcium carbonate, 12.5 wt% of silica sand No. 3, and 25 wt% of silica sand No. 5 was applied, and 45 wt% of 2-chlorobutadiene polymer and 35 wt% And 20% by weight of sprayed asphalt is applied and cured for 30 minutes to form a waterproof layer on the cross-linked surface.

≪ Example 3 >

After removing the foreign materials on the cross-linked surface and performing planarization, a lower waterproofing material composed of 91 wt% of 2-Ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 9 wt% of an admixture was applied, and MMA A 45% by weight aqueous solution of 2-chlorobutadiene polymer and 35% by weight of toluene was applied on the upper surface of the intermediate waterproofing material, and a waterproofing material comprising 35% by weight of resin, 32.5% by weight of calcium carbonate, 10.5% by weight of silica sand No. 3 and 22% And 20% by weight of sprayed asphalt is applied and cured for 30 minutes to form a waterproof layer on the cross-linked surface.

≪ Comparative Example 1 &

After removing the foreign materials on the cross-linked surface and performing planarization, a lower waterproofing material composed of 91 wt% of 2-Ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 9 wt% of an admixture was applied, and MMA A mixture of 10 wt% of resin, 39.5 wt% of calcium carbonate, 20.5 wt% of silica sand No. 3 and 30 wt% of silica sand No. 5 was applied, and 45 wt% of 2-chlorobutadiene polymer and 35 wt% And 20% by weight of sprayed asphalt is applied and cured for 30 minutes to form a waterproof layer on the cross-linked surface.

≪ Comparative Example 2 &

After removing the foreign materials on the cross-linked surface and performing planarization, a lower waterproofing material composed of 91 wt% of 2-Ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 9 wt% of an admixture was applied, and MMA A 45% by weight of 2-chlorobutadiene polymer and 35% by weight of toluene were mixed on the upper surface of the intermediate waterproofing material by applying a waterproofing material comprising 40% by weight of resin, 30.5% by weight of calcium carbonate, 10.5% by weight of silica sand No. 3 and 19% by weight of silica sand No. 5, And 20% by weight of sprayed asphalt is applied and cured for 30 minutes to form a waterproof layer on the cross-linked surface.

Tensile strength (N / mm ² ) Elongation (%) Example 1 8.0 603 Example 2 8.1 608 Example 3 8.4 607 Comparative Example 1 5.7 467 Comparative Example 2 8.2 608

As described above, when the MMA resin is mixed at 15 to 25% by weight, the tensile strength and elongation are improved. When the MMA resin is contained at less than 15% by weight, the tensile strength and elongation are remarkably lowered. It can be confirmed that the tensile strength and the elongation percentage are not further improved even when the resin is contained in an amount exceeding 35% by weight.

Therefore, it can be understood that the cross-linked waterproofing material according to the present embodiment preferably contains 15 to 25% by weight of the MMA resin.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. .

The waterproofing material of the present invention and the waterproofing method using the waterproofing material may be used for the products other than the cross-linked waterproofing material and the cross-linked waterproofing method using the cross-linked waterproofing material and the cross-linked waterproofing method using the same.

Accordingly, the true scope of the present invention should be determined by the following claims.

Claims (3)

Waterproofing material mixed with 91 to 95% by weight of 2-ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 5 to 9% by weight of an admixture,
15 to 35% by weight of methyl methacrylate (MMA) resin, 32.5 to 42.5% by weight of calcium carbonate, 7.5 to 17.5% by weight of silica sand No. 3 and 20 to 30% by weight of silica sand No. 5 A middle waterproofing material applied to the lower waterproofing material; And
A top waterproofing material formed by mixing 45 to 55% by weight of 2-chlorobutadiene polymer, 25 to 35% by weight of toluene or xylene, and 15 to 25% by weight of sprayed asphalt,
The silica sand No. 3 has a grain size of 1.5 to 2.4 mm in order to improve the strength of the cross-section,
The silica sand No. 5 is characterized in that the size of the particle size is set to 0.7 to 1.2 mm in order to reduce the voids and prevent infiltration of infiltration water. delete (a) removing foreign matter remaining on the face and performing planarization;
(b) applying a lower waterproofing material comprising 91 to 95% by weight of a 2-ethyl-2- (hydroxymethyl) -1,3-propanediol polymer and 5 to 9% by weight of an admixture to a cross-section;
(c) 15 to 35% by weight of methyl methacrylate (MMA) resin 5%, calcium carbonate 32.5 to 42.5% by weight, silicate 3 of 7.5 to 17.5% by weight and silicate 5 of 20 to 30% by weight, Applying a waterproofing material, And
(d) applying an upper waterproofing material comprising 45 to 55% by weight of 2-chlorobutadiene polymer, 25 to 35% by weight of toluene or xylene, and 15 to 25% by weight of sprayed asphalt to the waterproofing material, ,
The silica sand No. 3 has a grain size of 1.5 to 2.4 mm in order to improve the strength of the cross-section,
The silica sand No. 5 is characterized in that the size of the particle size is set to 0.7 to 1.2 mm in order to reduce the porosity and prevent infiltration of infiltration water.

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