KR20000039774A - Repairing and waterproofing method - Google Patents

Abstract

PURPOSE: A repairing and waterproofing method is provided to prevent the surface of a slab rooftop from secondly cracking caused by water in a protecting layer, to prevent a spread layer from being separated from a matrix and to prevent a waterproof layer from cracking caused by water gathered in the edge of the rooftop by tightly combining fiber glasses. CONSTITUTION: A part having cracks is cut and vacuumed by an air compressor. A drain pipe is inserted into a thermostat layer after breaking the inside of a drain hole. A cement glue(6) is covered on the wall and the parapet of a slab rooftop(100) in 1mm thickness. Fiber glass 618CR(8') is covered on an edge(30) and then cement mortar(7) is plastered in 3 to 5mm thickness to fill a gap. After that, a cement glue(6') is covered twice in 1mm thickness and fiber glass 618CR(8) is crossly covered twice in 0.7 to 0.8mm thickness. On the top, SA-506 and the cement glue are covered three times in 1mm thickness and finally SA-506 crude solution is covered twice in 1mm thickness.

Description

Repair Waterproof Construction Method

The present invention relates to a repair waterproofing method for waterproofing the surface of the old roof building to repair damage due to damage to the roof surface of the slab, in particular, by removing the water accumulated in the thermal insulation layer made of styropol on the roof of the slab in the pretreatment process, After repair, it is possible to prevent secondary cracks caused by freezing of water accumulated in the thermal insulation layer, and cement pools with cement mixture coating waterproofing agent and cement that have high permeability to the mother before and after plastering work for filling of voids. By forming an adhesive layer on the upper and lower parts of the plastering layer by applying it, the plastering layer can be easily prevented from being separated from the parent, that is, the roof surface of the slab, and the waterproofing effect can be enhanced. Apply two times in succession alternately and apply the waterproofing solution three times repeatedly. Increase the effect to maximize the effect, as well as water resistant, and, to a maintenance waterproof construction method capable of preventing water from penetrating to the inside through the edge of the roof construction by waterproof edge of the roof is inclined.

In general, as shown in FIG. 2, the slab rooftop (mother) 100 forms a waterproof layer 2 on the concrete layer 1, forms an insulating layer 3 using styropole on the upper surface, and 3) Pressed concrete layer (4) is formed on the top, and plastering (5) on the top

Consists of

After a long time after the slab rooftop (100) is installed, the plastering (5) is peeled off or corroded and damaged, and water penetrates into the damaged gaps, soaks into the insulating layer (3), and soaks into the insulating layer (3). As the frozen water freezes and expands in winter, it causes secondary cracks in the concrete (1), the waterproof layer (2) and the pressed concrete layer (4), which worsens the cracks on the roof of the slab, causing more and more water to leak. It became.

In order to prevent the water from leaking due to cracks generated on the roof of the slab (base) (100), the waterproof construction should be waterproofed, such a waterproof construction method is asphalt according to the part to be waterproofed and the material, use of the existing matrix, etc. Various methods and methods are provided, such as waterproofing method, cement liquid waterproofing method, synthetic polymer waterproofing method, etc. All of the above methods are applied by forming asphalt, cement liquid or synthetic polymer on the surface of the base matrix to form a waterproof layer. Since the bonding force between the concrete and the waterproofing layer is weak, the cracking occurs due to the repeated shrinkage, peeling expansion, etc. of the waterproofing layer due to the change of the outside temperature, the difference between the room temperature and the outside temperature, and direct sunlight, etc. Hydrolysis has the disadvantage that slaked lime is leaked and the strength gradually decreases. In the case of waterproof construction in an existing building, the waterproofing work was possible only when all the existing waterproofing layers were removed.

In addition, as a method for solving the above disadvantages, as in Patent No. 157239,

In the tablet, the adhesive of cement ester: cement: shrinkage agent: water-filling mixture is mixed with water at a certain weight ratio, and in the waterproofing process, the adhesive, cement, shrinkage preventing agent, and water mixture After coating, the glass fiber is laid and pressed with a roller and the adhesive of acrylic ester is applied to form the primary glass fiber waterproofing layer, and the glass fiber is formed on top of the primary glass fiber waterproofing layer to form the secondary glass fiber waterproofing layer. The glass fiber is applied to be perpendicular to the primary waterproof layer, pressed, and coated with an acrylic ester-based adhesive, and then waterproofed by applying a mixture of the above-mentioned acrylic ester-based adhesive, cement, a shrinkage preventing agent, and water to protect the waterproof layer. There was a way to do that,

According to the above method, since the water soaked into the surface of the slab roof without removing the water soaked in the surface without being removed, the water soaked in the heat-insulating layer (3) freezes and expands in the winter, the secondary roof on the slab roof Even if the waterproofing work is performed because of the occurrence of cracks, the water contained in the secondary cracks that cause the cracks not only to the repairing waterproofing layer but also to the waterproofing layer (2) and the concrete layer (1) under the insulating layer (3). In the pore filling work, the pore filling work is carried out by applying a mixture of adhesive, cement, shrinkage preventing agent and water of acrylic ester directly on the surface of the mother, so that the bonding strength between the mother and the coating layer for pore filling work is weak. There is a disadvantage in that the coating layer for filling the voids is poor due to its durability, and the fiberglass is applied once even in the waterproofing process. Squeezed in over the roller and also with an adhesive of an acrylate ester Presence

After applying the fiber glass once more and fix it with adhesive, it prevents cracking of the waterproof layer and at the same time, the fiber glass layers for forming the waterproof layer are separated from each other. There was a disadvantage of deterioration, and the water in the corner portion of the roof of the slab pooled a lot of water, and the infiltrating into the corner, such a cracking and cracking of the waterproof layer even after waterproofing was sometimes the case.

In order to solve the above disadvantage, secondary cracks can be prevented from occurring due to the water contained in the leaked slab roof surface, that is, the insulating layer of the mother, and excellent durability by strengthening the bonding force between the mother and the pore filling coating layer. Due to this, it is possible to prevent the pore filling coating layer from being easily separated from the mother, and to strengthen the bonding force between the fiberglass layers to prevent cracking of the waterproofing and waterproofing layers, thereby maximizing the crack prevention effect and the waterproofing effect, and the slab roof top It is an object of the present invention to provide a means for preventing the accumulation of cracks and deterioration even after the waterproofing layer penetrates into the corners.

1 is a cross-sectional view of one side of the roof top of the slab repaired by the present invention,

Figure 2 is a PVC pipe material inside the roof drain in the pretreatment process of the present invention

A cross-sectional view showing a state in which the drain pipe is inserted,

3 is the entire rooftop in the state in which the PVC pipe material drain pipe of Figure 2 is inserted

Shows the state seen from

4 is a perspective view of the PVC pipe material drain pipe of FIGS.

Explanation of symbols for the main parts of the drawings

1: concrete layer 2: waterproof layer

3: heat insulating layer 4: pressed concrete layer

5,7: Plastering layer 6,6 ', 6: adhesive layer

8: fiber glass layer 9: protective waterproof layer

10: drain pipe 20: drain hole

30: roof top corner 100: slab roof (parent)

In order to achieve the above object, the present invention is bilaterally divided into two parts on both sides

PVC pipes with two grooves are inserted into a styropole insulation layer containing water so that the internal water can escape through the PVC pipe and the second crack caused by the water contained in the insulation layer of the leaked mother And cement paste containing a permeable waterproofing agent before and after plastering for pore filling and matrix surface treatment to enhance adhesion between the matrix and the plastering layer for pore filling and to apply fiberglass layer. By applying two times overlapping fiberglass in a row and applying the cement paste containing the permeable waterproofing liquid on top three times, the fiberglass layer can be thickened to increase the waterproofing effect and crack prevention effect. In the corner portion of the plastering layer, fiber glass layer and the adhesive layer is configured by applying inclined.

The present invention will be described in detail with reference to the accompanying drawings according to the process as follows.

Pretreatment process

Before waterproofing the surface of the leaked matrix 100, the damaged portion of the pressed concrete layer 4 formed on the insulating layer 3 is removed, and the place where the crack is generated is cut and blown with an air compressor to remove dust. Clean thoroughly.

After cleaning the surface, as shown in FIG. 4, the PVC pipe is bisected laterally, and several grooves 11 are formed on both sides thereof to form a drain pipe 10 to form a drain pipe 10. 100 into the styropole thermal insulation layer 3, but as shown in Figure 2

After breaking the inner part of the drain holes 20 scattered over the entire roof, the electric drain pipe 10 is inserted into the bottom of the heat insulating layer 3 from the inner part of the drain hole 20 laterally to be part of the end of the drain pipe 10. Is installed so as to protrude into the drain 20, the water contained in the thermal insulation layer (3) even after the completion of the water-repellent installation is collected to the drain pipe (10) through the groove 11 of the drain pipe (10) When it is discharged to the drain 20 through the end of the) or hot, the water is vaporized to be discharged.

Liquid Waterproofing Process

After the drain pipe 10 is installed inside the heat insulating layer 3, the cement mixed coating waterproofing agent formed of a permeable acrylic ester copolymer and cement are mixed in a volume ratio of 1: 1, and the electrical mixture is diluted with twice the water and diluted. After the cement paste was formed, the electrically diluted cement paste was uniformly applied to the surface of the slab roof (base) 100, the wall and the handrail by about 1 mm to form an adhesive layer 6, thereby forming the plaster layer 7. Increasing the permeability and adhesion to the matrix 100 to strengthen the bonding force of the plaster layer 7 and the matrix 100, but as shown in Figure 1 in the corner portion 30 of the roof roof 100 of the slab Since the waterproof layer is more likely to be destroyed, the fiber glass 8 'is bonded to the surface and the wall by about 30 cm in length to prevent cracking of the edge portion 30.

When the thin cement paste is dried and the adhesive layer 6 is formed, the plaster layer 7 is formed to a thickness of 3 to 5 cm with cement mortar on the adhesive layer 6 and the fiberglass 8 'to perform void filling.

Electric cement mortar is formed by mixing 9 l of an adhesive cement reinforcement, 3 l of highly concentrated waterproofing agent, 60 kg of cement and 180 kg of sand, with 120 kg of water. Plastered to be inclined from the height of 30 cm from the surface in order to prevent the accumulation of water to the corner portion 30,

On top of that, a cement mixture-type waterproofing agent of an acrylate ester copolymer and a cement blended mixture of 1: 1 are applied to the cement paste diluted with twice the water, 1 mm and dried, and the adhesive layer 6 'is applied twice. Form.

In addition, the plastering layer 7 and the adhesive layer 6 ′ are applied only to the upper portion of the corner portion 30, the surface of the mother substrate 100, and the railing as shown in FIG. 1 except for the upper portion of the wall surface.

Fiber Glass Waterproofing Process

Apply fiber glass to the upper part of the adhesive layer 6 'horizontally with a thickness of 0.7 to 0.8 mm, and then apply fiber glass to the upper part with a thickness of 0.7 to 0.8 mm vertically, so that the fiber glass is overlapped twice. To form a fiber glass layer 8 to prevent cracking and increase the waterproof effect,

Cement-mixed coating waterproofing agent of the above acrylic acid ester copolymer to cement the fiberglass layer 8 completely: A thin cement paste diluted with twice the water by cement is mixed in a ratio of 1: 1 to the slab rooftop 100, the wall surface and the railing. By overlapping and drying three times in succession three times in total and forming an adhesive layer 6 by adhesively bonding the fiberglass layer 8,

The strong and thick fiberglass layer 8 prevents cracking and maximizes the waterproof effect.

In addition, the fiberglass layer 8 is applied only to the surface of the mother 100, the upper portion of the corner portion 30 and the handrail portion, and does not apply the upper portion of the wall surface.

Protective waterproof process

Cement-mixed coating waterproofing stock solution having a high permeability of the acrylate ester copolymer is applied twice each in succession 1 mm each to form a protective waterproof layer 9, thereby protecting the aesthetic sense of appearance and waterproofing layer.

Example

In the present invention, SA-506 of Asian Waterproofing Manufacturing Company is used as a cement mixed coating waterproofing agent of the above-permeable acrylic ester copolymer used for manufacturing cement paste and protecting water, and EVA acrylic ester for producing cement mortar is predominant. As a strong cement reinforcing agent, Mondine E-5000 manufactured by Asia Waterproofing Manufacturing Co., Ltd. is used, and water zero is used as a highly concentrated waterproofing agent for manufacturing cement mortar, and fiber bar glass uses 618CR, which is heat treated and adheres well.

The present invention will be described in detail by way of examples.

First, remove the damaged part of the pressed concrete layer 4 and place

After cutting and blowing with an air compressor, the drain pipe 10 formed of PVC pipe is broken into the drain hole 20 and inserted into the insulating layer 3 to be installed. Mix the cement in a volume ratio of 1: 1 and apply a thin cement paste (6) diluted with twice the water uniformly to the surface, wall and handrail of the slab rooftop (100) by about 1 mm, and to the edge portion 30, fiber bar 618CR Cement mortar (7) formed by mixing (8 ') horizontally and vertically by 30 cm and drying and then mixing 9 liters of Mondyne E-5000, 3 liters of water, 60 kg of cement and 180 kg of sand with 120 kg of water Plaster the voids at a thickness of ˜5 cm and fill the voids, but at the corners 30, beveled from the height of 30 cm at the edge wall, and cement mixture diluted with twice the water with SA-506 and cement mixed 1: 1. (6 ') twice in succession by 1 mm and dried, then fiber Lath 618CR (8) is applied to each other two times in succession two times in a row and length 0.7 to 0.8 mm thick, and 1 mm in three successive times with a thin cement paste (6) by SA-506 and cement on the top After application, the SA-506 stock solution is dried twice over 1 mm each time and then dried to complete the repair waterproofing.

According to the present invention configured as described above, by inserting the PVC pipe drain pipe 10 in the interior of the styropole thermal insulation layer (3) before waterproofing, the thermal insulation through the groove 11 of the drain pipe 10 even after waterproofing The moisture contained in the layer 3 is drained through the drain pipe 10, and when hot, vaporized water may be discharged through the drain pipe 10.

Since the moisture contained in the inside of the warm layer 3 is completely discharged to prevent secondary cracking such as water freezing and cracking, the durability of the waterproof layer can be enhanced.

Cement mortar for pore filling Before and after the plastering work, the waterproofing agent with strong permeability and cement paste formed with cement are applied to increase the permeability and adhesion of the matrix mortar 100 to the base layer for the pore filling. The separation from the (100) can be prevented, and the fiberglass layer 8 for thickening is prevented by applying the fiberglass 8 alternately two times in a row and applying the cement paste three times in a row. It is possible to maximize the crack prevention effect, and to plaster the edge portion 30 of the slab rooftop 100 to be inclined during the plastering work for filling the gap, the adhesive layer (6 ') 6 and fiberglass layer (8) on the top ) Is applied to be inclined, there is an effect that can prevent cracking and deterioration due to the water accumulated in the corner portion (30).

Claims (1)

For waterproof construction of leaks on the roof of the slab 100, After removing the damaged part of the pressed concrete layer (4) of the slab roof (base) (100), the place where the crack has occurred is chopped and blown with an air compressor to clean, then formed into a horizontally bisected PVC pipe A pretreatment step of inserting and installing a plurality of drainage pipes 10 having grooves 11 formed in the thermal insulation layer 3 through an inner portion of the drainage hole 20; The cement-coated coating waterproofing agent of the highly permeable acrylate ester copolymer and cement were mixed in a volume ratio of 1: 1, and the thin cement paste diluted with twice the water was uniformly applied to the slab rooftop 100 by about 1 mm as a whole for the adhesive layer (6) After forming and drying the fiber glass (8 ') in the corner portion 30 to 30 cm in length and length, the adhesive cement reinforcement 9ℓ, the highly concentrated waterproofing agent 3ℓ, 60kg cement And 180kg of sand, cemented mortar (7) formed by mixing with 120kg of water to the void filling work by plastering to a thickness of 3 ~ 5cm, the edge portion 30 is plastered to be inclined, the thin cement paste 1mm A liquid waterproofing step of coating and drying twice in succession to form an adhesive layer 6 '; The fiberglass 8 is applied to the horizontal and vertical layers alternately and overlapping each other twice in a row from 0.7 to 0.8 mm, and then applied to the upper portion thereof with the thin cement paste 1 mm for three times in succession to form the adhesive layer 6. Waterproof process; A protective waterproofing process of forming a protective waterproofing layer 9 by overlapping and coating the cement mixture-type waterproofing agent stock solution made of an acrylic acid ester copolymer and having strong permeability and overlapping twice each 1 mm; Repair waterproof construction method characterized in that consisting of.