KR101810550B1 - Bridge deck Waterproof composition and complex waterproof method using fiber reinforcing agent - Google Patents

Abstract

A bridge deck waterproofing material for bridges is composed of 57.7-80 wt% of natural asphalt, 6.5-13 wt% of waste plastic powder, 4.5-13 wt% of styrene-butadiene-styrene, 3.0-8.0 wt% of an aromatic petroleum resin, 2.5-5.5 wt% of a butadiene polymer, 0.1-3.5 wt% of a vulcanization accelerator, and 0.2-2.5 wt% of an antifoaming agent. The bridge deck waterproofing material of the present invention ensures excellent adhesiveness, chargeability, and crack resistance, and protects cement concrete from water and calcium chloride. In addition, since corrosion of iron on slabs can be avoided, it is possible to increase common usability of bridges while securing safety in transportation by vehicles.

Description

Technical Field [0001] The present invention relates to a composite material for a bridge waterproofing composition, a fiber reinforcing material using the composite material,

The present invention relates to a waterproof primer composition, an asphalt waterproofing material and a fiber reinforcing material used on a bridge slab or a concrete pavement. More particularly, the present invention relates to a coating film and a composite waterproofing method for preventing cracking and improving durability of an asphalt pavement.

Generally, the concrete slab is complicated by the action of cyclic loading, vibration, impact and shear by transportation vehicles, and contraction and expansion due to temperature changes. These concrete slabs cause concrete failure due to continuous deterioration of performance, which causes a serious danger to vehicle traffic. Therefore, it is important to manufacture a waterproof material excellent in waterproofness and durability.

In Korea, the use of solvent type or penetration type waterproofing material has been used for reasons of simplicity and economical efficiency, but problems such as freezing and thawing and cracking resistance have been gradually increasing and the use of asphalt sheet type or coating type waterproofing material is gradually increasing.

The coating type waterproofing material may be coated with a roller or a spray using an oil or water-based liquid material to form a waterproof layer, but it may be difficult to ensure a uniform adhesion with the asphalt concrete and a uniform waterproofing thickness. In addition, due to poor adhesion, there is a problem that a pot hole is generated due to the penetration of the asphalt concrete and the waterproof layer.

On the other hand, the sheet type waterproofing material forms a homogeneous waterproof layer thickness, and after applying the primer, the primer is applied and attached on the concrete slab.

However, in case of sheet type waterproofing material, there should be no irregularities on the surface of concrete slab. Also, there is a problem that the performance of the concrete slab is deteriorated due to the tearing or breakage of the sheet type waterproofing material by the finisher and the truck of the asphalt concrete pavement equipment.

Also, in the case of the conventional waterproofing material, when the vehicle is suddenly braked, the load is transmitted to the waterproof layer and the waterproofing material is pushed to one side, and the waterproof layer is lost and water or moisture permeates to deteriorate the performance of the concrete slab.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and aims at supplementing a need or problem occurring in the prior art.

It is an object of the present invention to prevent permeation of external deteriorating materials including moisture and calcium chloride to the upper part of the concrete slab.

The present invention aims at complementing the conventional waterproofing method and supplementing adhesion, cracking resistance and tensile performance with asphalt concrete.

And to provide a fiber reinforcing material using the same and a coated composite waterproofing material using the fiber reinforcing material.

In the present invention, the thickness of the waterproof layer is 1.5 to 4.0 mm to form a waterproof layer to provide a composite waterproofing method.

In order to solve the above-mentioned problems, the primer composition of the first step according to the present invention is characterized in that it contains brown asphalt, a polymer organic solvent, a waste plastic powder, styrene-butadiene-styrene, octane, toluene, paraffin, , Antifoaming agent, lithium silicate, and the like.

Wherein the primer composition comprises 31.0 to 51.0 wt% of brown asphalt, 13.0 to 28.0 wt% of a polymer organic solvent, 10 to 14 wt% of waste plastic powder, 3.0 to 12.0 wt% of styrene-butadiene-styrene, 3.0 to 8.0 wt% 3.0 to 8.0 wt%, paraffin 3.0 to 5.0 wt%, aromatic amine 0.5 to 2.0 wt%, vulcanization accelerator 0.5 to 2.0 wt%, antifoaming agent 0.5 to 1.0 wt%, and lithium silicate 0.5 to 1.0 wt%.

In order to solve the above-mentioned problems, specifically, the coating composite waterproofing material composition constituted in the second step of the present invention is composed of natural asphalt, waste plastic powder, styrene-butadiene-styrene, aromatic petroleum resin, butadiene polymer, vulcanization accelerator, The present invention relates to a composite waterproofing material composition for bridging waterproofing coatings for bridges,

The composite composite waterproofing material composition according to claim 1, wherein the composite waterproofing material composition comprises 57.7 to 80 wt% of natural asphalt, 6.5 to 13 wt% of waste plastic powder, 4.5 to 13 wt% of styrene-butadiene-styrene, 3.0 to 8.0 wt% of aromatic petroleum resin, 2.5 to 5.5 wt% 0.1 to 3.5 wt% of a vulcanization accelerator, and 0.2 to 2.5 wt% of a defoaming agent.

Specifically, in order to solve the above-mentioned problems, the grid fiber reinforcing material formed in step 3 of the present invention is formed by coating a composite composite waterproofing material composition and increasing the adhesiveness with a natural mineral wool fiber grid 130 and a composite composite waterproofing material And a sheet protective layer for protecting the waterproof layer by a packing equipment wheel.

The present invention has the following effects.

Cement concrete, and asphalt concrete, it is possible to reduce the installation defects.

The grid fiber reinforcement and the waterproofing material can apply the air gap tightly in the air-vent section of the bridge, so no separate process is required.

The waterproofing material can be applied at zero temperature by working at high temperature of 190 ℃ ± 20 ℃.

It is well suited for the domestic season because of its excellent cracking resistance at low temperatures and its distinctive four seasons.

1 is a view showing a construction procedure of a waterproof method using a composite material of the present invention.
FIG. 2 is a schematic view of the composite coating method of the present invention.
3 is a schematic view of a grid fiber reinforcement of the present invention.

The present invention will be described in more detail as follows.

The present invention provides a composite membrane type waterproofing material having a function of forming a film thickness of 1.5 to 4.0 mm at the time of coating waterproofing and filling the groove and void, and securing excellence in quality.

The present method provides a composite waterproofing method comprising a first-stage primer composition, a second-stage coating composite waterproofing composition, and a third-stage grid fiber reinforcement step for securing adhesiveness, durability and bending resistance while having excellent watertightness.

Specifically, the primer composition of the first step according to the present invention is prepared by mixing the asphalt, organic solvent for dissolving the polymer except for octane and toluene, waste plastic powder, styrene-butadiene-styrene, octane, toluene, paraffin, aromatic amine- It is used for a bridge waterproofing primer composition of a bridge including a promoter, defoamer, and lithium silicate.

The primer can improve the adhesion of the old and new surfaces and increase the water resistance of the surface of the bridge slab. Therefore, it is preferable that the primer composition is applied to the upper part of the bridge slab at 0.3 to 0.5 kg / m 2 at room temperature before application of the composite coating waterproofing material.

The primer composition is composed of 31.0 to 51.0 wt% of brown asphalt, 13.0 to 28.0 wt% of an organic solvent dissolving a polymer except for octane and toluene, 10 to 14 wt% of waste plastic powder, 3.0 to 12.0 wt% of styrene-butadiene- 3.0 to 8.0 wt% of octane, 3.0 to 8.0 wt% of toluene, 3.0 to 5.0 wt% of paraffin, 0.5 to 2.0 wt% of aromatic amine, 0.5 to 2.0 wt% of vulcanization accelerator, 0.5 to 1.0 wt% of defoamer, wt%.

If the amount of the brown asphalt primer composition is less than 31.0 wt%, the adhesive property and the waterproof property are lowered, and when the blast asphalt primer composition is more than 51.0 wt%, the working efficiency is lowered.

The polymer organic solvent may be a solvent for dissolving the polymer, and may impart the workability and the drying function of the primer composition.

The waste plastic powder can give an improvement in adhesive strength, heat resistance and compressive strength.

The styrene-butadiene-styrene may impart adhesion and tensile performance of the primer composition.

The primer composition containing more than the above octane, toluene, and paraffin is not preferable because the flowability is excessively increased, excessive flow occurs, and bubbles are generated much and water resistance is lowered.

The aromatic amine system may impart a UV-resistant function.

The vulcanization accelerator can prevent oxidation and impart a resistance to heat.

The defoaming agent may be included to remove air bubbles and air present inside the primer composition.

The lithium silicate penetrates the surface of the concrete through the osmotic pressure phenomenon to tighten the pores, thereby imparting water resistance.

The composite composite waterproofing material composition formed in step 2 of the present invention is a composite of waterproof composite materials for bridges including natural asphalt, waste plastic powder, styrene-butadiene-styrene, aromatic petroleum resin, butadiene polymer, vulcanization accelerator, Used in waterproofing compositions.

The composite coating type waterproofing material can improve the adhesion with the primer layer and increase the waterproof property on the surface of the bridge slab. Therefore, it is preferable that the coating composition composite waterproofing material composition is applied to the upper part of the slab at 1.5 ~ 4.0 mm in a melted state at 190 ± 20 ℃ after primer curing.

The composite composite waterproofing material composition according to claim 1, wherein the composite waterproofing material composition comprises 57.7 to 80 wt% of natural asphalt, 6.5 to 13 wt% of waste plastic powder, 4.5 to 13 wt% of styrene-butadiene-styrene, 3.0 to 8.0 wt% of aromatic petroleum resin, 2.5 to 5.5 wt% 0.1 to 3.5 wt% of a vulcanization accelerator, and 0.2 to 2.5 wt% of a defoaming agent.

The natural asphalt has an intrusion at 25 ° C of 10 to 70 and a flash point of 250 ° C or more.

The waste plastic powder can give an improvement in adhesive strength, heat resistance and compressive strength.

The styrene-butadiene-styrene binds with the composition to improve the adhesive strength, the tensile strength, and the low-temperature bending property.

The aromatic petroleum resin ensures fluidity and finish of the waterproofing material and improves the adhesion with the surface.

The butadiene polymer plays a role in improving the bending property and the restoring force.

The vulcanization accelerator serves to control the setting time of the composition to ensure workability.

The antifoaming agent removes the air bubbles inside the composition, and if the amount of the antifoaming agent exceeds the recommended amount, it may serve to reduce the material separation and adhesion.

The grid fiber reinforcement material formed in step 3 of the present invention may include a fiber grid 130 formed of natural mineral wool on the upper side, an impregnation-increasing fiber layer 120 for increasing adhesion with the composite composite waterproof material, And a sheet protective layer (110) for protecting the waterproof layer by the packing equipment wheels.

Preferably, the grid fiber reinforcing material is installed at 1.0 to 1.1 m < 2 > after curing the composite composite waterproofing material.

The fibrous grid 130 of the grid fiber reinforcing material may be made of a mineral wool reduced in resources and made to have a thickness of 0.3 to 1.5 mm to improve the tensile performance.

The grid fiber reinforcement-impregnated increase fiber layer 120 can improve adhesion with the composite composite waterproofing material and impregnation adhesion.

The protective layer 110 of the grid fiber reinforcing material sheet may prevent one or more of nonwoven fabric, polyester, polyvinyl alcohol, and synthetic fibers from being damaged on the upper part of the asphalt concrete packing equipment.

A second-stage coated composite waterproofing material may be applied to the grid fiber reinforcement to be used as an asphalt waterproofing sheet.

As described above, the technical field to which the present invention belongs will be described in detail. However, the present invention is not limited thereto.

Hereinafter, the present invention will be described in detail by way of examples. However, the present invention is not limited thereto.

The waterproofing composition was prepared by mixing 68.85g of natural asphalt, 9.75g of waste plastic powder, 8.75g of styrene-butadiene-styrene, 5.5g of aromatic petroleum resin, 4g of butadiene polymer, 1.8g of vulcanization accelerator and 1.35g of defoamer, .

The same procedure as in Example 1 was carried out except that 5 g of waste plastic powder was further added.

The procedure of Example 1 was repeated except that 5 g of styrene-butadiene-styrene was further added.

[Example 4]

The same procedure as in Example 1 was carried out except that 5 g of an aromatic petroleum resin was further added.

[Example 5]

The procedure of Example 1 was repeated except that 4 g of butadiene polymer was added.

[Example 6]

The procedure of Example 1 was repeated except that 1 g of a vulcanization accelerator was added.

[Example 7]

The same procedure as in Example 1 was carried out except that 1 g of a defoaming agent was further added.

[Comparative Example 1]

The same procedure as in Example 1 was carried out except that 9.75 g of waste plastic powder was excluded.

[Comparative Example 2]

The procedure of Example 1 was repeated except that 8.75 g of styrene-butadiene-styrene was omitted.

[Comparative Example 3]

The procedure of Example 1 was repeated except that 5.5 g of an aromatic petroleum resin was excluded.

[Comparative Example 4]

The procedure of Example 1 was repeated except that 1.35 g of the antifoaming agent was excluded.

<Experiment>

Table 1 shows the workability, crack resistance, water resistance, tensile strength and tensile bond strength of the primer applied to the concrete surface using the waterproofing composition prepared according to Examples and Comparative Examples according to KS F 4932.

division Workability Cracking resistance Permeability The tensile strength
(%) Tensile bond strength
(%) Example 1 good clear Not pitcher 100 101 Example 2 good clear Not pitcher 109 108 Example 3 good clear Not pitcher 116 113 Example 4 good clear Not pitcher 109 108 Example 5 good clear Not pitcher 102 101 Example 6 good clear Not pitcher 101 103 Example 7 good clear Not pitcher 104 102 Comparative Example 1 good usually Not pitcher 91 92 Comparative Example 2 good usually Not pitcher 91 88 Comparative Example 3 good usually usually 90 89 Comparative Example 4 good usually usually 90 90

It can be seen from the results of Table 1 that it is possible to manufacture a waterproofing material having an optimum quality standard when the third embodiment is used.

10: Bridge slab
20: Primer composition
30: Waterproofing composition
40: Grid fiber reinforcement (sheet)
50: Asphalt concrete
110: sheet protecting layer
120: impregnation increase fiber layer
130: Fiber Grid

Claims (5)

The primer composition used in the cement concrete bridging waterproofing method is composed of 31.0 to 51.0 wt% of brown asphalt, 13.0 to 28.0 wt% of an organic solvent dissolving the polymer except for octane and toluene, 10 to 14 wt% of waste plastic powder, , 3.0 to 8.0 wt% of toluene, 3.0 to 5.0 wt% of paraffin, 0.5 to 2.0 wt% of an aromatic amine, 0.5 to 2.0 wt% of a vulcanization accelerator, 0.5 to 1.0 wt% of an antifoaming agent %, And lithium silicate is 0.5 to 1.0 wt%. The composite composite waterproofing composition used in the cement concrete bridging waterproofing method comprises 57.7 to 80 wt% of natural asphalt, 6.5 to 13 wt% of waste plastic powder, 4.5 to 13 wt% of styrene-butadiene-styrene, 3.0 to 8.0 wt% of aromatic petroleum resin, 2.5 to 5.5 wt% of a butadiene polymer, 0.1 to 3.5 wt% of a vulcanization accelerator, and 0.2 to 2.5 wt% of a defoaming agent. A resin composition comprising 57.7 to 80 wt% of natural asphalt, 6.5 to 13 wt% of waste plastic powder, 4.5 to 13 wt% of styrene-butadiene-styrene, 3.0 to 8.0 wt% of aromatic petroleum resin, 2.5 to 5.5 wt% of butadiene polymer, a fiber grid 130 made of natural mineral wool, an impregnation-increasing fiber layer 120 for increasing the adhesion with the composite composite waterproofing material, And a sheet protective layer (110) for protecting the waterproof layer by the equipment wheels. A resin composition comprising 57.7 to 80 wt% of natural asphalt, 6.5 to 13 wt% of waste plastic powder, 4.5 to 13 wt% of styrene-butadiene-styrene, 3.0 to 8.0 wt% of aromatic petroleum resin, 2.5 to 5.5 wt% of butadiene polymer, a fiber grid 130 made of natural mineral wool, an impregnation increasing fiber layer 120 for increasing adhesion between the composite membrane type waterproofing material and the fiber grid 130, And a sheet protective layer (110) for protecting the waterproof layer by the wheels of the equipment, wherein the waterproof sheet is impregnated with water for 2 to 3 mm and then used as a waterproof sheet. A waterproofing method in which a composite waterproofing material of any one of claims 2 to 4 is formed on cement concrete and asphalt concrete.

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