KR200373002Y1 - Waterproofing Material of Duplex Rubberized Asphalt Membrane plus Felt - Google Patents

Abstract

The present invention is designed to alternately laminate a fast-drying asphalt compound and a rubber asphalt coating waterproofing material and stretchy asphalt felt mainly composed of synthetic rubber for waterproof construction of building structures, In case of waterproof construction, stretchy asphalt roofing felt is applied to the top, so that the strong adhesive force of rubber asphalt coating waterproofing material prevents rubber asphalt coating waterproofing layer, asphalt felt layer, and felt and roofing without lifting or peeling It relates to a rubber asphalt coating film and a felt laminated waterproofing material that can be adhered to.

The present invention is made of a quick-drying asphalt compound (Quick Drying Asphalt Compound) as a main raw material, it is prepared by mixing one of synthetic polymer resin adhesive, natural mineral fiber, petroleum resin and isobutylene or poly isobutylene-based synthetic resin A rubber asphalt coating waterproofing layer bonded to the structure base surface or primer layer; A stretch asphalt felt layer combined with an upper surface of the rubber asphalt coating waterproofing material and having an asphalt impregnated with a polyester nonwoven fabric; And a stretch asphalt roofing layer, which is formed by penetrating and coating asphalt with a polyester nonwoven fabric and attaching a mineral powder to an upper surface thereof so as to be combined with an uppermost rubber asphalt surface, wherein the rubber asphalt coating waterproofing layer and the stretch asphalt felt are And alternately stacked a predetermined number of times.

Description

Rubber Asphalt Coating and Felt Lamination Waterproofing {Waterproofing Material of Duplex Rubberized Asphalt Membrane plus Felt}

The present invention relates to a rubber asphalt coating film and a felt laminated waterproofing material for waterproofing various concrete structures by using a coating waterproofing material and asphalt felt as a multilayer. More specifically, the quick drying asphalt compound and synthetic rubber are used as main materials. A combination of a rubber asphalt coating waterproofing material and a stretch asphalt felt (Petchy Asphalt Felt) impregnated with a polyester nonwoven fabric creates a reliable waterproof layer by forming a continuous waterproof layer.The roof, underground basement, underground outer walls and underground parking lot of various buildings The present invention relates to a rubber asphalt coating film and a felt laminated waterproofing material which can be applied not only to building structures such as upper slabs, but also to civil structures such as subways, underground roads, cavities, and bridge decks.

In general, the conventional waterproofing method for waterproofing underground concrete structures such as roof top of building structures, upper slabs of underground parking lots or underground exterior walls includes solid blown asphalt obtained from crude oil refining process, asphalt roofing, Asphalt felt is used as a main material, and the blown asphalt is heated and melted at a high temperature (220 ° C. to 250 ° C.) to perform three layers of asphalt by alternately performing four coatings, two asphalt roofing and one asphalt felt laying. There is an eight-layer construction.

Since this method forms a multi-layer waterproof layer, the waterproof layer is thick, so that the waterproof effect is excellent, and even if the finish of the base surface is relatively rough, the construction is possible. On the other hand, the method has to heat-melt the solid blown asphalt at the construction site, there is a problem of environmental pollution due to the smell and smoke generated during the heating melting. In addition, it is not only complicated process due to layer construction, but also the construction of vertical surface is impossible in the underground waterproofing, it is easy to lift the joints and adhesive parts or crack of the waterproof layer, and also it is difficult to find defects in case of defects. Above all, the environmental pollution problem caused by smoke and odor generated when melting solid blown asphalt is heated and melted.

As a solution for improving the problems of the asphalt 3-ply 8-layer waterproofing method, improved asphalt sheet waterproofing method, urethane-based waterproofing method using a coating film waterproofing material of the elastic rubber component mixed with polyurethane resin and refined tar as organic polymer material, Bentonite sheet waterproofing is proposed and currently used.

In each of the waterproof construction methods presented above, in the case of the asphalt sheet waterproof construction method that is most applied in the field, as shown in Figure 2, the surface treatment-primer coating-laying asphalt waterproof sheet-waterproofing layer protection mortar-pressed concrete The construction is carried out in the order of pouring, and the connection seam of the asphalt waterproof sheet is subjected to the hot welding method using a torch.

Asphalt sheet waterproofing method that performs this series of processes is easy to construct, shorten the air, excellent economical efficiency, has the effect of forming an excellent stretch and flexible waterproof layer, Due to the lack of adhesive force, the waterproof layer is lifted or peeled off, and the water-tightness of the waterproof sheet joints due to the heat welding of the joints between the waterproof sheets causes frequent waterproofing defects. There is an excessive problem.

The urethane-based waterproofing method is excellent in workability and stretchability of the waterproofing layer, so that it can cope with microcracks of the concrete structure, while it is difficult to form an even thickness of the waterproofing layer, and the defective part of the waterproofing layer is caused by partial bubbles in the waterproofing layer. There is a disadvantage that occurs frequently.

The bentonite sheet waterproofing method has an ideal effect on the waterproofing of underground concrete structures with high water pressure, but since the sodium bentonite, which is the raw material of this process, is imported from all over the world, the material cost is high, and it is difficult to find defects when defects occur. have.

On the other hand, the waterproofing method commonly applied to the waterproofing of the bridge deck structure is a membrane waterproofing method to prevent water inflow to the bridge deck and to form a flexible impermeable membrane, and simply dissolved in a solution or solvent that reduces water inflow. A sealer waterproofing method for spraying a solution onto a bridge deck structure is proposed.

The membrane waterproofing method of waterproofing the bridge deck structure is classified into a sheet type waterproofing method and a coating type waterproofing method.

The characteristics and problems of these bridge deck waterproofing methods are summarized in <Table 1>.

<Table 1>

division Membranes waterproof Sealer waterproof Sheet waterproof Coating waterproof Construction method outline ROLL-shaped asphalt waterproof sheet formed by applying rubber asphalt compound with uniform thickness on both sides with a polyester long fiber nonwoven fabric as a center, bonding fine silica sand on the upper surface, and bonding a polyethylene film on the lower surface. Waterproofing method of heat bonding the torches on the bridge top surface with torch Synthetic rubber-based coating waterproofing material mixed with phenolic resin and toluene solvent with chloroprene rubber which is excellent in heat resistance and chemical resistance is applied to the upper surface of bridge by using roller or rubber spatula. How to form a waterproof layer Alkaline silicate liquid waterproofing material is applied to the bridge concrete deck to prevent the waterproofing material from penetrating into the fine pores on the concrete surface to form a waterproofing film. Construction order ① Ground cleanup ② Asphalt primer application ③ Asphalt waterproof sheet laying (Torch use hot melt adhesion) ④ Asphalt concrete laying ① Clean the surface ② Apply the primary primer ③ Apply the secondary primer ④ Apply CR rubber coating waterproofing material (apply 3 times) ⑤ Install asphalt concrete ① Ground surface preparation ② First coating of liquid waterproofing material ③ Second coating of liquid waterproofing material ④ Laying of asphalt concrete Advantages -Good follow-up to fine cracking of bridge deck (excellent elasticity, elongation rate)-Waterproof layer formation of uniform thickness-Excellent acid resistance and weather resistance-Good adhesion when laying asphalt concrete on waterproof layer -Good followability to fine cracking of bridge deck (excellent elasticity, elongation rate)-Forming waterproof layer of seamless film without continuous joints-Excellent cold resistance and heat resistance -Excellent ease of construction and economic Disadvantages -Frequent defects due to the lack of watertightness of the joint when connecting the waterproof sheet connection seam-The lower part of the waterproof sheet is heated with the torch to melt the asphalt compound, and the bottom surface of the sheet is not heated evenly when bonded to the base of the bridge deck. Difficult to adhere to the base of bridge deck-defects in case of leakage by construction -Difficult to form a coating layer with uniform thickness-Difficult to generate a defect in the waterproof layer due to frequent bubbles in the curing process after coating the coating waterproofing material. Cannot be applied at temperatures above 30 ℃, the importance of surface cleaning work on the waterproof base surface and the time required for the curing process after application of waterproofing film -Damage to the waterproof layer even if there is a minute crack in the concrete top (bad crack followability)-Difficult to penetrate the entire surface of the concrete top uniformly (Difficult to form a uniform waterproof layer-Impermeable to high strength concrete)

As shown in Table 1, the waterproof sheet used as a material in the membrane waterproofing method is an improved asphalt compound on both sides using polyester spunbond nonwovens having excellent tensile strength and elongation as a center material. After applying SBS Modified Asphalt Compound) to a uniform thickness, the asphalt compound is a roll-type waterproof sheet in which fine silica sand is adhered to the upper surface of the asphalt compound and the polyethylene film is adhesively molded on the lower surface. This is constructed by a method of bonding the lower surface of the waterproof sheet laid on the upper surface of the bridge and the base surface of the upper surface of the bridge with a torch.

Therefore, the sheet type waterproof is excellent in waterproofness and can be easily formed to form a waterproof layer of a certain thickness, there is an advantage that good followability in the occurrence of cracks in the bridge top plate (床板), but the adhesive sheet to the surface of the bridge top plate At this time, since the entire lower surface of the waterproof sheet should be heated with a torch, it is difficult to uniformly bond and this causes the sheet waterproof layer to be lifted and peeled off. The joint is heated by a torch, which is difficult to completely bond between the sheets and the leaks are frequently generated due to the lack of watertightness of the sheet joints.

In particular, when water leaks due to lack of water tightness of the seat joint, the leaked water flows under the waterproof layer and simultaneously leaks at various weak spots of the bridge deck structure, making it difficult to find a defective part, which is not easy to repair. In addition, the scope of repair is extensive, and the main problem is that the cost of repair is excessive.

Coating type waterproofing mainly uses synthetic rubber coating waterproofing material mixed with solvents such as phenol resin and toluene, mainly composed of chloroprene rubber, which has excellent heat resistance and excellent tensile strength and chemical resistance. The construction of the coating waterproof is to dry the coating film waterproofing material after the first and second coating using a brush or roller after cleaning the base surface of the bridge top plate, and finally to perform the third coating, generally 1.0mm ~ 1.6mm It is constructed by a method of forming a coating film waterproofing layer having a coating film thickness of.

In the case of the coating film waterproofing material, it is possible to form a coating film waterproofing layer without a seamless part by continuous coating, so it has excellent waterproofing performance, good tracking of cracks on the upper surface of the bridge and cutting resistance due to vehicle braking. Has the advantage of good adhesion. On the other hand, since the coating film waterproofing material is manually applied using a brush or roller, it is difficult to form a constant coating film thickness, and the coating film waterproofing material should be applied about 3 times, which requires a lot of work processes and requires precise construction by skilled workers. There is a problem.

In addition, when applying a synthetic rubber coating waterproofing material mixed with a petroleum solvent such as toluene to the concrete surface of the bridge, air is often sucked into the pores of the concrete to generate bubbles in the coating waterproofing layer, toluene solvent After coating the synthetic rubber-based waterproof coating material mixed with the air bubbles in the coating film waterproof layer due to the volatilization of the solvent in the drying process, there is a disadvantage in that a defect occurs in the coating film waterproof layer.

In addition, the coating waterproof material has a problem in that when the asphalt concrete (ascon) on the coating film waterproof layer to form a pavement layer, the adhesive strength between the synthetic rubber coating film waterproof layer and the asphalt concrete layer is weak, the asphalt concrete loading layer on the waterproof film layer There is a high risk of damage to the coating waterproofing layer at the time of entry and exit, and if the coating waterproofing layer is broken, there is a problem that eventually appears as a main cause of road damage.

Therefore, the present invention has been proposed to solve the above problems, rubber asphalt coating waterproofing material and stretch asphalt felt mainly made of quick-drying asphalt compound (Quick Drying Asphalt Compound) and synthetic rubber during waterproof construction of the building structure (Stretchy Asphalt) Felt) is continuously laminated alternately and the stretch asphalt roofing is laid on top when waterproofing the civil structures of the bridge deck.The concrete base or bridge deck surface, asphalt felt layer and felt and An object of the present invention is to provide a rubber asphalt coating film and a felt laminated waterproofing material which can be completely adhered without lifting or peeling between roofings.

In addition, the present invention is safe to handle and can be installed at room temperature without heating and melting of construction materials of waterproofing materials, as well as rubber asphalt coating and felt that can be easily waterproofed by continuous operation of rubber asphalt coating waterproofing and asphalt felt laying. Another object is to provide a laminate waterproofing material.

In addition, the present invention has another object to minimize the occurrence of waterproof defects during construction, easy to find defects during the occurrence of defects, and to provide a rubber asphalt coating film and felt laminated waterproofing material that can be economical waterproof construction.

1 is a waterproof construction cross-sectional view of a three-layer eight-layer waterproof waterproof asphalt of asphalt solid and blow construction method using asphalt felt and asphalt roofing according to the prior art

Figure 2 is a waterproof construction sectional view using the improved asphalt waterproof sheet according to the prior art.

Figure 3 is a cross-sectional view of a first embodiment of the waterproof construction using the rubber asphalt coating film and the felt laminated waterproofing material according to the present invention.

Figure 4 is a cross-sectional view of a second embodiment of the waterproof construction using the rubber asphalt coating film and the felt laminated waterproofing material according to the present invention.

In order to achieve the above object, the first embodiment of the present invention is made of a quick drying asphalt compound (Quick Drying Asphalt Compound) as a main raw material, synthetic polymer resin adhesive, natural mineral fiber, petroleum resin and isobutylene or poly iso A rubber asphalt coating waterproofing layer prepared by mixing at least one selected from butylene-based resins and combined with a base surface or a primer layer of a concrete structure; And a stretch asphalt felt layer having an asphalt impregnated with a polyester nonwoven fabric, which is combined with an upper surface of the rubber asphalt coating waterproof layer, wherein the rubber asphalt coating waterproof layer and the stretch asphalt felt are alternately stacked a predetermined number of times. To provide a rubber asphalt coating and felt laminated waterproofing material, characterized in that the finish or the top surface is a rubber asphalt coating waterproofing layer.

The second embodiment of the present invention is a stretch asphalt roofing layer (Stretchy Asphalt) that is combined with the uppermost rubber asphalt surface by attaching mineral powder to one side of the upper surface after infiltrating and coating the polyester nonwoven fabric with the structure of the first embodiment. Roofing Felt Layer) is characterized in that it further comprises.

Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 3 and 4.

Rubber asphalt coating film and felt laminated waterproofing material according to the present invention is not only a building structure such as rooftop, foundation floor and basement outer wall of various buildings, upper slab of underground parking lot, but also steel of steel plate or steel structure of subway, underground roadway, cavity and concrete structure (鋼) It is embodied to be applied to waterproofing civil structures such as roof tops in bridges and rooftop waterproofing in building rooftop hardening method.

In the first embodiment of the present invention, the rubber asphalt applied to the external waterproofing (floor, wall, upper slab) of the underground concrete structure or the waterproofing of the building asphalt roof 2-layer 5-layer / 6-layer unexposed waterproofing and the building roof waterproofing It is divided into 2-layer 5-layer / 7-layer exposed waterproof method.

That is, the asphalt primer layer applied to the concrete base surface as shown in Figure 3; A quick dry asphalt compound (Quick Drying Asphalt Compound) as a main raw material, is prepared by mixing at least one selected from synthetic polymer resin adhesive, natural mineral fiber, petroleum resin and isobutylene or poly isobutylene-based synthetic resin to the material A rubber asphalt coating waterproofing layer combined with the asphalt primer layer; It is combined with the upper surface of the rubber asphalt coating waterproof layer to reinforce the crack resistance of the waterproof layer, and includes a stretch asphalt felt layer (Stretchy Asphalt Felt Layer) impregnated with a polyester nonwoven fabric, the rubber asphalt coating waterproof layer and stretch asphalt It is a structure in which a felt layer is laminated | stacked one more time alternately.

Asphalt two-layer six-layer waterproof is a structure in which the rubber asphalt coating film waterproofing material is applied to the laminated structure as described above.

The rubber asphalt 2-ply 5-layer structure of the exposed waterproof method is a structure in which a self-exposed exposed asphalt waterproof sheet is laminated instead of the stretch asphalt felt laid on the top of the non-exposed waterproof rubber 2-ply 5-layer structure. The rubber asphalt two-ply seven-layer structure is a structure in which a self-exposed exposed asphalt waterproof sheet is laminated on a rubber asphalt coating waterproofing material which is laid on the top in a rubber asphalt two-ply six-layer structure of non-exposure waterproofing method.

The rubber asphalt coating waterproofing layer combines a coating film function and a function as an adhesive, and is cured in a dry touch state in which elasticity is exhibited within 1-2 hours after application.

In the above embodiment, the basic condition of the rubber asphalt coating waterproofing layer which provides the waterproofing function of the coating should be applied to the concrete base surface to increase adhesion to the concrete surface, and serve to increase the bonding strength between the concrete base surface and the stretch asphalt felt layer. do.

In order to satisfy these conditions, the quality performance standards of asphalt roof coatings defined in US ASTM D2823 are shown in Table 2 below.

<Table 2>

Test Items unit Reference value Remarks Water absorption % 1.0 or less ASTMD2823 Test Standard Nonvolatile % 50 or more Mineral stabiligers % 5 to 20 Asphalt % 40 or more Mineral matter based on original mass of insoluble residue % 80 or more Heat resistance at 60 ℃ - There should be no flow or bubble. Pliability at 0 ° C - There should be no peeling and cracking.

In addition, the stretch asphalt felt, which is reinforced with the tensile performance and the crack resistance of the waterproof layer by impregnating asphalt with a polyester nonwoven fabric (80 g / m 2), has characteristics that sufficiently exceed the standard values shown in Table 3 below. Is higher than the Korean KS quality standard (KSF4901: 2002) in the remarks column.

<Table 3>

Test Items unit Reference value Remarks Tensile performance (per butterfly 10mm) Longitudinal direction N / cm (kgf / cm) 60 (6.1) or more KSF 4901: 2002 Exam Standard Butterfly direction N / cm (kgf / cm) 35 (3.6) or more Flexural performance - No balance Asphalt penetration situation - No asphalt impermeability Heating loss % 5 or less

Rubber asphalt coating waterproofing layer of the present invention to satisfy the criteria as shown in Table 2, the main material is 40 ~ 57wt% of Quick Drying Asphalt Compound, Synthetic Rubber Adhesives 15 ~ 25wt%, natural mineral fibers (Asbestos fibers, Modified Cellulose fibers) 12 ~ 16wt%, petroleum resin 5 ~ 10wt% and isobutylene or poly isobutylene synthetic resin 3 ~ 10wt% of the mixed material do.

In addition, 0.2 ~ 0.6 wt% of zinc stearate is added as a co-additive to the mixture material mixed above to enhance durability and flexibility, and 5 to 7 wt% of petroleum solvent to facilitate viscosity control, workability and dispersibility. It includes, and is prepared by adding 0.2 to 0.4wt of at least one or more selected from other dispersants, antioxidants, plasticizers.

The asphalt compound is cutback asphalt (Cutback Asphalt) or blown asphalt (Blown Asphalt) or a mixture of these cutback asphalt and blown asphalt, composed of 80% asphalt solids, 20% petroleum solvent (Solvent).

The synthetic polymer resin adhesive is to impart a coping force, heat resistance and adhesion to cracks, and when it is added below 15wt%, the elongation rate and adhesive strength decrease, and when it is added above 25wt%, the elongation rate becomes too large. The adhesive strength is lowered and at the same time there is a problem that the manufacturing cost increases.

The natural mineral fiber is to be mixed with the synthetic rubber adhesive to give a crack resistance, and to increase the adhesive strength, when added to less than 12wt% can not obtain the adhesive strength required by the present invention When added in more than 16wt%, there is a problem that the durability is worse.

The petroleum resin is to enhance the adhesive strength, increase the tensile strength, heat resistance and coating strength, when added below 5wt%, there is a problem that the tensile strength and coating film strength is lowered, when added to more than 10wt% The strength is so large that there is a problem that cracks are very likely to occur.

The natural mineral fiber may be made of asbestos fibers or inorganic wheelers processed with natural stone.

Rubber asphalt coating waterproofing material prepared in the above composition is coated with a predetermined thickness (about 0.5 ~ 1.0mm in the present embodiment) in addition to the primer layer that was performed in the conventional asphalt sheet waterproofing method, the inorganic concrete ground with coating waterproofing function Complete adhesion between cotton and organic stretch asphalt felt is performed.

Since the rubber asphalt coating waterproofing material can reliably achieve the coating and adhesive function only by applying the coating thickness of 0.5 to 1.0mm, the rubber asphalt coating waterproofing material can be applied continuously and the stretch asphalt felt laying can be done, and the construction can be easily performed. .

The rubber asphalt coating waterproofing material having the above-described composition satisfies the ASTM D2823 standard of Table 2 because it achieves perfect adhesion between the concrete base surface and the asphalt felt layer by the unique strong adhesiveness.

Referring to the construction method of the first embodiment configured as described above are as follows.

First, remove the foreign substances on the concrete base surface to flatten, and clean the dirt, dust, sand and the like. Then, the concrete base surface is coated with an asphalt primer in a dried state as much as possible. At this time, while the asphalt primer is uniformly applied to dry 0.4ℓ per m 2 using a roller, reinforcing the weak part that can be a waterproof defect. The corner area where the floor meets the wall is treated with a slanted round surface of 50mm or more in diameter, and the weak part that is likely to be damaged, such as the area around the drain, the pipe connection area, and the corner where the floor meets the wall, is coated with rubber asphalt coating waterproofing material. After, 20cm wide reinforcing felt is laid, and the rubber asphalt coating waterproofing material is applied again to reinforce the waterproof layer.

1kg per m 2 of the liquid rubber asphalt coating waterproofing material is applied to the asphalt primer layer, wherein the bottom surface is applied by the width of the stretch asphalt felt using a brush, a roller or a rubber trowel, and evenly applied from the lower to the higher. The vertical wall surface is applied with a brush or roller and applied twice after 30 minutes of coating to form the target coating layer thickness.

After stretching the asphalt asphalt impregnated stretch asphalt felt (Stretchy Asphalt Felt) in the polyester nonwoven fabric in a continuous operation on the upper surface of the rubber asphalt coating waterproofing material, lightly press with a roller. The connecting joint of the stretch asphalt felt laying is first coated with a rubber or asphalt coating waterproofing material with a brush or roller on a 10 cm wide width of the stretch asphalt felt, and then the asphalt felt is overlapped.

After 1 hour-2 hours after the continuous application of the rubber asphalt coating waterproofing material and the asphalt felting, the secondary rubber asphalt coating waterproofing material is applied in the same manner as the above method after the rubber asphalt coating waterproofing material is cured to a dry state, and the stretch asphalt Lay the felt vertically.

After applying the secondary rubber asphalt coating waterproofing material and laying the asphalt felt 1 hour-2 hours, the third rubber asphalt coating waterproofing material is applied and finished in the same manner as described above.

During the construction process, the edges of the floor and the wall are attached by placing the asphalt felt on the floor about 15 cm toward the vertical wall and the asphalt felt coming down from the vertical wall by about 15 cm toward the floor.

In addition, after applying the rubber asphalt coating waterproofing material on the basement outer wall surface, the asphalt felt paste is cut and pasted the asphalt felt with a length of 2 m in advance, and the wall having a height of 2 m or more repeats the same work.

On the other hand, the protective layer construction after the construction of the waterproof layer is as follows.

A) Roof construction

After finishing the waterproofing layer, after curing the upper rubber asphalt coating waterproofing layer, lay the insulating polyethylene film (after installing the insulating layer if necessary), and install the waterproofing layer pressed concrete.

B) Method of underground exterior wall

Install a protective buffer on the waterproof layer to protect the waterproof layer and backfill it with soil.

All). Underground method

After the waterproofing layer is constructed on the discarded concrete, the insulating polyethylene film is laid and the waterproofing layer mortar is poured, followed by the reinforcement, followed by the bottom concrete.

As described above, when the first embodiment of the present invention, which is constructed and constructed, is applied to the rooftop landscaping method, a drainage plate is installed on the top surface of the rubber asphalt coating waterproofing material applied to the top, and the polyester nonwoven fabric is laid thereon. , Auxiliary base layer (sand / masato)-Planting soil layer can be installed to achieve the landscape.

Next, a second embodiment of the present invention will be described with reference to FIG.

In this embodiment, a rubber asphalt 3-ply 5-layer / seven-layer waterproofing material is proposed to be applicable to the waterproofing of the upper surface of a bridge surface consisting of a concrete top plate or a steel top plate of a steel structure.

Before describing an embodiment of the present invention, first, the requirements of the bridge surface top waterproof layer will be described.

The upper surface of the bridge surface waterproof layer should be a waterproof layer capable of maintaining stability even under various conditions such as mechanical effects such as repeated loads, vibrations and shocks caused by traffic vehicles, meteorological effects such as temperature changes, and expansion contraction of the upper plates. The following is a summary of the requirements for the waterproofing layer of such a typical bridge face deck structure.

First, even if water penetrates into the upper surface of the bridge surface through damaged parts of the pavement, the road dog, the central separator, etc., it must be an impermeable waterproof layer that does not intrude water into the upper surface of the bridge surface.

Second, even if a crack occurs in the top of the bridge surface, it should be a waterproof layer that can follow cracks.

Third, it should be a waterproof layer that is resistant to the mechanical action caused by the starting and braking of the vehicle.

Fourth, it should be a waterproof layer having excellent adhesion to the bridge deck and ascon pavement (or concrete pavement layer).

Fifth, a waterproof layer should be formed without changing the material due to the heat effect in ascon packaging.

Sixth, the construction should be waterproof and economical for the top of the bridge surface.

In order to satisfy the above conditions, the five-layer waterproofing of the asphalt asphalt in the second embodiment of the present invention is a primer layer, a rubber asphalt coating waterproofing layer, a stretch asphalt felt layer and a rubber asphalt coating waterproofing layer as shown in FIG. This sequentially stacked structure is the same as that of the first embodiment described above. In addition, after the asphalt is infiltrated into the polyester nonwoven fabric on the top, a mineral powder is attached to the upper surface, and the stretch asphalt roofing felt layer is further included on the upper surface of the rubber asphalt coating waterproofing material. .

In addition, seven layers of rubber asphalt for waterproofing are laid three times on the asphalt primer layer using a combination of rubber asphalt coating waterproofing material and stretch asphalt felt. The topmost stretch asphalt asphalt roofing layer (Sretchy Aphalt Rofing Felt Layer) is further included.

The stretch asphalt roofing layer is made of a structure that can withstand high heat when reinforcing the crack resistance of the waterproofing layer and ascon laying. That is, the fine mineral powder adhered to the upper surface of the stretch asphalt roofing layer strengthens the adhesive strength with the pavement layer (ascon pavement layer or concrete pavement layer) on the waterproof layer.

The stretch asphalt roofing is a reinforcement of tensile performance and crack resistance of the waterproof layer by penetrating and coating a waterproof non-woven asphalt (100 g / ㎡) on the waterproofing asphalt, and then attaching the mineral powder on one side, as shown in Table 4 below. It has characteristics that satisfies the indicated standard value, which is higher than the Korean KS quality standard (KSF4902: 1997) in the remarks column.

<Table 4>

Test Items unit Reference value Remarks Tensile performance (per butterfly 10mm) Longitudinal direction N / cm (kgf / cm) 60 (6.1) or more KSF 4902: 1997 Exam Standard Butterfly direction N / cm (kgf / cm) 35 (3.6) or more Flexural performance No cracking occurs in more than 9 out of 10 specimens Asphalt penetration situation No asphalt impermeability Heat resistance performance There should be no slipping of the coating, foaming, or seeping of the asphalt that has penetrated.

The construction method of the second embodiment of the present invention configured as described above will be described.

The construction method of the present embodiment is to finish the construction by further finishing the stretch asphalt roofing layer to the construction method of the first embodiment described above.

In other words, after removing the foreign matter present on the concrete base surface, and after cleaning, the asphalt primer (0.4 L / ㎡) is applied using a roller.

The liquid rubber asphalt coating waterproofing material (1kg / ㎡) is applied to the asphalt primer layer, wherein the bottom surface is applied using a brush or roller or rubber trowel, and the vertical wall surface is applied using a brush or roller.

After stretching the asphalt asphalt impregnated stretch asphalt felt (Stretchy Asphalt Felt) in the polyester non-woven fabric on the upper surface of the rubber asphalt coating waterproof material, apply a rubber asphalt coating waterproofing material, and stretch asphalt felt on the upper surface of the rubber asphalt coating waterproof material ( Stretchy Asphalt Felt) vertically.

Apply rubber asphalt coating waterproofing material again, infiltrate asphalt onto polyester non-woven fabric, spread stretch asphalt roofing felt with mineral powder on top surface, push it with roller, and push asphalt concrete Install and close.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be obvious to those with

As described above, according to the present invention, the following effects are obtained.

First, the waterproof layer is formed by lamination of rubber asphalt coating waterproofing material and stretch felt having both asphalt coating and adhesive function, and it is excellent in watertightness to secure safety and reliability of waterproofing, and it can respond to ground behavior, chemical resistance and durability. Excellent weather resistance.

Second, as a normal temperature construction method, it is possible to construct a vertical wall surface, there is no risk of handling and transporting materials, and the workability is good by the continuous operation of room temperature coating and asphalt felt laying of the rubber asphalt coating waterproofing material.

Third, by forming the rubber asphalt coating film and the felt laminated waterproof layer completely adhered to the concrete base surface without lifting or peeling from the concrete base surface by the strong adhesive force of the rubber asphalt coating waterproofing material, Water leaked under the waterproof layer cannot flow, so it is easy to find defects in case of a fault and partial repair work is easy.

Fourth, unlike rubber asphalt coating waterproofing material with excellent elasticity and asphalt felt of general paper, it uses stretch asphalt felt centered on polyester nonwoven fabric reinforced with tensile strength and elasticity, so that it can cope with minute cracking of concrete structure. And it is suitable for the waterproofing of the vibrating concrete structure.

Fifth, it forms a seamless waterproof layer even in complex parts with many protrusions, and can adjust the thickness of the waterproof layer arbitrarily according to the use of concrete structures to increase the durability of the waterproof layer.

Sixth, it is relatively simple to clean up the ground surface of concrete to be waterproofed, and it is possible to landscaping the rooftop without the waterproofing layer in the building rooftop waterproofing.

Claims (7)

Quick Drying Asphalt Compound is used as the main raw material, and is manufactured by mixing one of synthetic polymer resin adhesive, natural mineral fiber, petroleum resin, and isobutylene or poly isobutylene synthetic resin with the material. A rubber asphalt coating waterproofing layer combined with a cotton or primer layer; And Combined to the upper surface of the rubber asphalt coating waterproof layer, including a stretch asphalt felt layer (Stretchy Asphalt Felt Layer) impregnated with a polyester nonwoven fabric, The rubber asphalt coating film and the felt asphalt felt waterproofing layer and the stretch asphalt felt layer are alternately laminated a predetermined number of times, characterized in that the rubber asphalt coating film and felt laminated waterproofing material. Quick Drying Asphalt Compound is used as the main raw material, and is manufactured by mixing one of synthetic polymer resin adhesive, natural mineral fiber, petroleum resin, and isobutylene or poly isobutylene synthetic resin with the material. A rubber asphalt coating waterproofing layer combined with a cotton or primer layer; A stretch asphalt felt layer combined with an upper surface of the rubber asphalt coating waterproof layer and having asphalt impregnated with a polyester nonwoven fabric; And It includes a stretch asphalt roofing felt layer which is combined with the upper surface of the top rubber asphalt coating waterproof layer by impregnating asphalt with polyester nonwoven fabric and attaching mineral powder on the upper surface thereof. A rubber asphalt coating film and felt laminated waterproof material, characterized in that at least one layer selected from a rubber asphalt coating waterproof layer or a stretch asphalt felt layer is laminated between the stretch asphalt felt layer and the stretch asphalt roofing layer. Quick Drying Asphalt Compound is used as a main raw material, and is manufactured by mixing one of synthetic polymer resin adhesive, natural mineral fiber, petroleum resin and isobutylene or poly isobutylene synthetic resin with the material. Or a rubber asphalt coating waterproofing layer bonded to the primer layer; Combining the upper surface of the rubber asphalt coating waterproof layer, the combination of the asphalt-impregnated stretch asphalt felt layer (Stretchy Asphalt Felt Layer) laminated at least one or more times, the self-exposed exposed asphalt waterproof sheet is laminated at the top Rubber asphalt coating film and felt laminated waterproofing material. The method of claim 1, A rubber asphalt coating and felt laminated waterproofing material, characterized in that the rubber asphalt coating waterproofing layer is located on the upper surface of the stretch asphalt felt located at the top. delete delete The method of claim 2, Rubber asphalt coating film and felt laminated waterproofing material, characterized in that the mineral forming the stretch asphalt roofing made of silica sand.