KR20020031225A - Water-proofing method for upper concrete surface bridge deck using guss based material and glass-mesh - Google Patents

Abstract

PURPOSE: An upper plate waterproofing method of concrete bridge using gush material and glass fiber is provided to construct a waterproofing layer which can increase adhesive strength between an upper plate and a paving layer and can absorb elasticity and sheering intensity. CONSTITUTION: The upper plate(10) waterproofing method for a cured new concrete bridge or an old concrete bridge treated by polymer concrete and Linax is accomplished by preparing a primer(20) of 0.3kg/m¬2 after eliminating dusts and impurities while preparing glass fiber mesh(21) of 6 x 9 mm in the weight of 0.08kg; adding plastics, filling materials and polymer in upper portion thereof; heating the waterproofing gush coating(22) consists of asphalt in 200 to 220deg.C; applying the gush coating 5 to 7 kg/m¬2 and spraying silica of 3 to 5 mm in a mount of 2kg/m¬2.

Description

Water-proofing method for upper concrete surface bridge deck using guss based material and glass-mesh}

The present invention relates to the waterproofing method of the upper surface of the concrete bridge surface using a goose-based material and glass fiber mesh for waterproofing the bridge when the asphalt pavement construction work on the top plate of the concrete bridge. More specifically, the concrete bridge deck and asphalt layer In forming a waterproof layer between them, it has impermeability and excellent adhesion, absorbs tension due to shrinkage and expansion, absorbs shear strength acting on the asphalt layer, and removes the pressure of excess water vapor generated from the bridge deck. It is to provide a method that can shorten the air by preventing cracks, excellent workability, no bubble formation and poor reaction, and after the installation of the waterproof layer to perform the work of the subsequent process immediately.

In general, when asphalt is laid on the tops of bridges constructed with cement concrete

-Adhesion between bridge deck and asphalt layer

-Elasticity due to thermal expansion of bridge deck

-Shear stress against vehicle weight

-Excess steam pressure in bridge deck and asphalt layer

-Perfect waterproof performance

The conditions such as must be satisfied.

When paving the bridge with asphalt 30 on the top plate 10 of a concrete bridge, which is conventionally applied, a primer 20 and a primer 20 are applied to the bridge top plate 10 and a rubber-based waterproofing agent (40: chloroporin solution) is applied to the top. Melted) was coated and waterproofed and asphalt was installed.

The conventional construction method as described above is a rubber-based waterproof layer to follow the crack is good, but is not a construction method that has been proven to be applied mainly to the waterproofing of the building and also must be cured for a long time, so air is delayed and bubbles are generated during construction. There was a problem.

Therefore, the present invention has been created for the purpose of improving the conventional problems as described above, excellent adhesion between the concrete bridge deck and asphalt pavement layer, can absorb the elastic force and absorb the shear strength and can remove the pressure of excess water vapor It is to provide a waterproof method that can form an impermeable waterproof layer.

Rubber and plastic asphalt solution as a mixture of aromatic and paraffin solvent after removing dust and impurities on newly-constructed concrete bridge deck or polymer concrete and Linex, to provide the waterproofing method. At the same time, the glass fiber mesh woven with filament and staple fiber is applied, and the coating waterproofing goose composed of plasticizer, filler and other polymer on asphalt is heated to the temperature of 200-220 ℃. It is possible to provide a waterproofing method that can spray silica sand by laying coating film and install asphalt to waterproof the surface of concrete bridge.

1 is a schematic cross-sectional structural view for explaining the construction method of the present invention

2 is a schematic cross-sectional structure diagram for explaining a conventional construction method

<Description of the symbols for the main parts of the drawings>

(10) concrete bridge deck

20 primer

21.Fiberglass Mash

(22) Coating waterproofing goose

(23) silica sand

30 asphalt

Hereinafter, the configuration and operation of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic cross-sectional structural view for explaining the construction method of the present invention.

In waterproofing the newly-constructed concrete bridge deck 10 or the aged concrete bridge deck 10 treated with polymer concrete and Linex,

After removing dust and impurities on the bridge deck 10, construct the primer 20 of 0.3 kg / m ² and at the same time, construct a 6 × 9 mm glass fiber mesh 21 with a weight of 0.08 kg and a plasticizer, Coating water repellent goose (22) consisting of 32-38% asphalt with filler and polymer was heated to a temperature of 200-220 ° C. and laid in an amount of 5-7 kg / m ² to give 3-5 mm of silica sand (23) To spray 2kg / m ² and to install the asphalt (30) will be able to waterproof the bridge.

The softening point of the said goose 22 is 90 degreeC or more, penetration in 25 degreeC is 35 mm or less, and a flash point is 250 degrees C or less.

The present invention as described above is a method for solving the problems of adhesion failure and shear strength of the bridge in performing the waterproof coating of new bridges and old bridges constructed of concrete, the ground treatment of the bridge deck (10) is a new bridge deck (10) ) Concrete should have a curing period of at least 3 weeks, and the old bridge deck (10) should be flattened with linex or the like, and grooved or degraded concrete should be repaired with polymer concrete and grounded. do.

Dust and impurities are removed on the bridge top plate 10 treated as described above, and the primer 20, which is a rubber component and a plastic asphalt solution, is mixed with a roller or the like in an amount of 0.3 kg / m ² as a mixture of aromaticity and paraffin solvent. At the same time, the glass fiber mesh 21 woven with filament and staple fibers of 6 × 9 mm is applied to a weight of 0.08 kg, and there should be no overlapping during construction.

Plasticizer, filler and polymer are added on the glass fiber mesh 21 and the coating waterproofing goose 22 composed of 32-38% asphalt is heated to a temperature of 200-220 ° C. in an amount of 5-7 kg / m ² . When installed, the coating waterproofing goose 22 penetrates through the glass fiber mesh 21 and is bonded and bonded as if it is welded to the concrete bridge deck 10 treated with the primer 20. The coating waterproofing goose 22 has a flow rate characteristic. Due to this, the glass fiber mesh 21 itself is not saturated.

Therefore, the glass fiber mesh 21 is to act as a duct to remove the excess water vapor pressure generated in the concrete bridge deck (10).

In addition, the coating waterproofing goose 22 may absorb any thermal tension that may develop between the surface of the coating waterproofing goose 22 and the bottom of the bridge deck 10 at a temperature of 25 ° C. or higher, and the shear stress of the heavy vehicle. Sufficient robustness can be maintained so that deformation does not occur under the following conditions.

In the upper part of the coating waterproofing goose 22 layer as described above, in order to increase the adhesive force with the asphalt 30, 3-5 kg fine silica sand 23 is coated with the coating waterproofing goose 22 layer and the amount of ² kg / m ² simultaneously. Spraying to and forming the final asphalt (30) layer to the top of the bridge will be able to waterproof coating.

The present invention is not limited to the above-described specific preferred embodiments, and various modifications can be made by any person having ordinary skill in the art without departing from the gist of the present invention claimed in the claims. Of course, such changes will fall within the scope of the claims.

Therefore, in the present invention, the coating waterproofing goose is installed in a high-temperature flow state, so that there is no gap and watertightness is ensured, so that moisture, snow removal, chloride, and secretion do not penetrate the pavement, and thus have excellent durability and filler compared to general asphalt concrete. Since the cohesive force by bitumen is strong, abrasion resistance, impact resistance and urine resistance are good, and slag is sprayed while the surface is not cooled during construction, and this can be integrated with the packaging agent to increase the resistance to sliding. It is effective to install by high temperature liquid and good adhesiveness due to penetration adhesion to uneven parts.

Claims (1)

In waterproofing the newly-constructed concrete bridge deck 10 or the aged concrete bridge deck 10 treated with polymer concrete and Linex, After removing dust and impurities on the bridge deck 10, construct the primer 20 of 0.3 kg / m ² and at the same time, construct a 6 × 9 mm glass fiber mesh 21 with a weight of 0.08 kg and a plasticizer, Coating water repellent goose (22) consisting of 32-38% asphalt with filler and polymer was heated to a temperature of 200-220 ° C. and laid in an amount of 5-7 kg / m ² to give 3-5 mm of silica sand (23) Spraying 2kg / m ² and the asphalt 30 to install the waterproofing method of the concrete bridge surface using a goose-based material and glass fiber mesh, characterized in that the waterproof surface.