Waterproof construction method for modifying floor of room with water without rigid leveling layer and protective layer

Abstract

The invention discloses a waterproof construction method for modifying the ground of a room with water without a rigid leveling layer and a protective layer, which comprises the following steps of: S1, cleaning a ground base layer to enable the ground base layer to become a flat and rough surface, and repairing cracks on the base layer; s2, after the crack is repaired, the repaired part is integrally polished and flattened, the surface of the base layer is wetted, and the surface of the base layer is coated with a cement-based capillary crystalline waterproof coating; and S3, after construction of the cement-based capillary crystalline waterproof coating is completed, a layer of acrylic acid waterproof coating is applied to the surface layer of the cement-based capillary crystalline waterproof coating, and a protective layer is formed. The arrangement of a leveling layer and a protective layer is omitted, the clear height of a floor is increased by 6-8 cm or above, and the use function and comfort are guaranteed; therefore, the floor is not higher than the floors of adjacent aisles or other rooms, and the risk that sewage overflows to other functional areas is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of renovation projects, in particular to a waterproof construction method for renovating the floor of a room with water without requiring a rigid leveling layer and a protective layer. Background Art

[0002] As my country's urbanization and infrastructure construction are coming to an end, the dominance of new construction projects will fade from the historical stage of construction, and renovation projects are becoming the mainstay of the construction industry. Renovation projects are often accompanied by problems such as low bathroom floor heights and no drop floors, which seriously affect the function and comfort of the building. The Ministry of Housing and Urban-Rural Development has clearly stated that the floor height of improved housing must not be less than 3 meters. In particular, the problem is made more serious by the further reduction in floor net height due to the occupation of space due to reinforcement and multiple pipelines. The low floor height and overflow of water in water-containing rooms such as bathrooms in renovation projects have become common engineering problems that need to be solved urgently and cannot be avoided.

[0003] The conventional waterproofing construction method for bathroom renovation is to construct the concrete waterproof leveling layer, waterproof layer, concrete waterproof protective layer in sequence, and then proceed to the next construction process. The average total thickness of the concrete waterproof leveling layer and protective layer is 6-8cm, and there is a risk of sewage overflow. The concrete of the leveling layer and protective layer greatly increases the load borne by the beam and slab structure, resulting in further strengthening of the project reinforcement measures and requirements, and the reinforcement measures occupy a larger space. Summary of the Invention

[0004] The invention provides a waterproof construction method for renovating the floor of a room with water, which is free of rigid leveling layers and protective layers. The method is simple to operate, safe, has a short cycle, saves labor, and has good economic and social benefits.

[0005] The technical problem to be solved is: in order to solve the problem of waterproofing construction in rooms with small effective floor net height (seriously affecting the use function and comfort) and no drop floor (there is a risk of water overflow) in the renovation of old projects, the concrete of the leveling layer and protective layer in traditional renovation projects greatly increases the load borne by the beam-slab structure, resulting in the need for further strengthening of project reinforcement measures and requirements.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides a waterproof construction method for floor reconstruction in a water-filled room without requiring a rigid leveling layer and a protective layer, comprising the following steps: S1: Clean the ground base to make it smooth and rough, and repair any cracks on the base; S2: After the cracks are repaired, the repaired area is polished and smoothed, the surface of the base layer is moistened, and a cement-based penetrating crystallizing waterproof coating is applied to the surface of the base layer; S3: After the construction of cement-based penetrating crystallization waterproof coating is completed, a layer of acrylic waterproof coating is applied on its surface to form a protective layer; S4: Construction of finishing layer.

[0007] The present invention provides a waterproof construction method for renovating the floor of a water-filled room without requiring a rigid leveling layer and a protective layer. Furthermore, a polymer cement-based waterproof coating is provided between the cement-based penetrating crystallization waterproof coating and the acrylic waterproof coating.

[0008] The present invention provides a waterproof construction method for floor reconstruction in a water room without a rigid leveling layer and a protective layer. Furthermore, in S1, the base layer is cleaned specifically, the weak surface of the ground is removed, and the floating sediment is sucked clean with a vacuum cleaner, and then the surface of the base layer is shot blasted and then preliminarily polished and smoothed with a grinder.

[0009] The present invention provides a waterproof construction method for floor reconstruction in a water-filled room without requiring a rigid leveling layer and a protective layer. Further, in S1, crack repairing includes: 1) For minor cracks that do not affect the structural safety, chisel, clean and wash them, then repair them with repair mortar; 2) For areas with large hollows, grouting treatment should be carried out; 3) Reinforce areas with large cracks.

[0010] The present invention provides a waterproof construction method for renovating the floor of a water room without requiring a rigid leveling layer and a protective layer. Furthermore, grouting is used for the floor whose base layer is hollow but not bulging or bulging within 8 mm.

[0011] The present invention provides a waterproof construction method for renovating the floor of a water room without requiring a rigid leveling layer and a protective layer. Furthermore, for the ground where the hollowing of the base layer exceeds the original ground by more than 8 mm, a method of chiseling and filling with mortar is adopted to treat the hollowing.

[0012] The present invention provides a waterproof construction method for renovating the floor of a water room without a rigid leveling layer and a protective layer. Furthermore, for cracks smaller than 0.3 mm, an interface agent is used to seal the cracks; for non-structural cracks larger than 0.3 mm and smaller than 1 mm, the cracks are cut into a V-shape and then filled with repair mortar; for structural cracks larger than 1 mm, the cracks are cut into a V-shape, and grooves are cut perpendicular to the crack direction, steel bars are arranged in the grooves, and then the repair mortar is filled.

[0013] The present invention provides a waterproof construction method for renovating the floor of a water-filled room without requiring a rigid leveling layer and a protective layer. Furthermore, in S2, the cement-based penetrating crystallization waterproof coating is applied twice with a total thickness of not less than 1 mm. After the first coat of the cement-based penetrating crystallization waterproof coating is completely set, the second coat of the cement-based penetrating crystallization waterproof coating is applied, and the two coats of coating are applied in perpendicular directions.

[0014] The present invention provides a waterproof construction method for renovating the floor of a water-filled room without requiring a rigid leveling layer and a protective layer. Furthermore, a second coat of cement-based penetrating crystallization waterproof coating is applied when the coating is still in a wet state 6-12 hours after the first coat has finally set.

[0015] The present invention provides a waterproof construction method for renovating the floor of a water-filled room without requiring a rigid leveling layer and a protective layer. Furthermore, in S3, a layer of carcass reinforcement material is added to weak locations prone to water leakage, such as floor drains, pipe roots, corners, and entrances and exits, and then acrylic waterproof coating is applied.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. This application creatively eliminates the concrete leveling layer and protective layer, thereby solving the waterproofing construction problems in rooms with low ceilings (severely affecting functionality and comfort), numerous pipelines (occupying the net height of the floor), and no drop-down slabs (posing a risk of water accumulation and overflow) during renovation projects; 2. This application eliminates the need for concrete leveling and protective layers, increasing the net height of the floor by more than 6-8 cm to ensure functionality and comfort. The finished floor of rooms like bathrooms without drop-off slabs is no longer higher than the floors of adjacent walkways or other rooms, reducing the risk of sewage overflowing into other functional areas. 3. Greatly reduce the load borne by the structure. Calculated based on an average reduction of 0.07m thick concrete, the load per square meter can be reduced by 0.07m3 (concrete volume) × 2400kg (concrete density) = 168kg. By repairing cracks and adding cement-based penetrating crystalline waterproof coatings, the original concrete structure is made denser, improving the structural bearing capacity. After force calculation, the reinforcement standard can be lowered or even eliminated, and the net height of the floor can be further increased by omitting the space occupied by reinforcement. 4. By repairing cracks and adding cement-based penetrating crystallization waterproof coatings, the original concrete structure becomes denser, greatly improving the concrete's anti-seepage performance, which is equivalent to adding a layer of anti-seepage concrete rigid waterproofing and a layer of flexible waterproofing; improving waterproofing standards, reducing leakage risks, and increasing the original one layer of waterproofing defense to three layers of waterproofing defense; 5. A layer of carcass reinforcement material should be added to weak areas prone to water leakage, such as floor drains, pipe roots, corners, and entrances and exits, to improve the waterproof performance of weak areas.

[0017] The present invention will be further described below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of crack repair according to the present invention; Figure 3 This is a schematic diagram of the root tube treatment of the present invention; Figure 4It is a schematic diagram of floor drain treatment of the present invention.

[0019] Reference numerals: 1. Base layer; 2. Cement-based penetrating crystallization waterproof coating; 3. Polymer cement-based waterproof coating; 4. Acrylic waterproof coating; 5. Finishing layer; 6. Cracks; 7. Steel bars; 8. Grooves; 9. Floor drains; 10. Pipe roots; 11. Carcass reinforcement material; 12. Dry hard cement mortar. DETAILED DESCRIPTION

[0020] like Figure 1-Figure 4 As shown, the present invention discloses a waterproof construction method for floor reconstruction in a water-filled room without a rigid leveling layer and a protective layer, comprising the following steps: S1: Clean the ground base within the scope of waterproof construction, and use a vacuum cleaner to suck out the floating sediment, then shot blast the surface of the base to separate the loose layer from the base, and then use a grinder to initially grind it flat for concrete crack repair.

[0021] Specifically, the base layer is treated with sandblasting or flat-push grinder, and a professional floor sandblasting machine or grinder is used to remove weak surfaces of the floor, such as floating slurry, loose materials, etc., so that the floor has a rough surface and a good bonding surface. At the same time, since the sandblasting machine has its own high-power vacuum cleaner, it can effectively avoid dust during construction.

[0022] Use a flat-push grinder to grind the edges and corners of concrete columns and wall corners; for oil-contaminated floors, use a special spray gun to treat the areas that still have stains after sandblasting. The floor after sandblasting has no loose slurry, is sealed, and has no looseness or debris on the surface. After vacuuming, confirm the cracks and hollowness of the floor again, and milling is performed on local areas that are hollow or soft.

[0023] Among them, the loose soil produced after the base layer is polished must be sucked clean by a vacuum cleaner, and the ground must be cleaned with a high-power vacuum cleaner. The ground must not be filled with impurities and dust that affect the adhesion.

[0024] S2: After chiseling, cleaning and washing the minor structural cracks that do not affect the structural safety, they are repaired with high-strength and durable crack repair mortar specially designed for terrazzo. If the hollows are too large, grouting treatment is required. If the cracks are too large, reinforcement treatment is required.

[0025] Among them, the ground with hollow base but no bulging or bulging within 8mm should be grouting method: 1) Use the knocking method to identify the hollow part; 2) Use an impact drill to drill through the hollow concrete layer with a spacing of 30-40 cm. Then use a vacuum cleaner to clean the dust in the drilled holes and push the corresponding grouting valve into the hole. 3) Mix the repair mortar interface agent evenly according to the proportion, pour it into the grouting pump, and then connect the grouting valve. Start grouting from one side to the other, tapping the ground while grouting. After the repair mortar interface agent is filled, change another grouting valve and repeat the above steps. When the repair mortar interface agent seeps out from the nearby cracks or the original hollow area is knocked without hollowing, stop grouting in this area. After the repair mortar interface agent is dried, inject the repair mortar in the same way; 4) After 24 hours of grouting, knock off the grouting valve exposed above the ground with a hammer and then proceed to the next step.

[0026] For the ground where the hollowing of the base layer exceeds the original ground by more than 8mm, the hollow ground is removed and filled: 1) Identify the hollow areas and clearly mark them with colored pens. When marking, be sure to be accurate and appropriately expand the hollow area by 1 cm to avoid missing any areas. 2) Removal: Use a cutting saw to cut along the marked boundaries. Pay attention to dust cleaning and protection when cutting. After cutting, use an electric hammer to remove from the outside of the boundary inward. Be especially careful at the boundary. Do not disturb the area that is not hollowed out, and keep the original steel bars. 3) Fill and repair. Clean the cleaned area with a vacuum cleaner, then apply the repair mortar interface agent. Use a soft brush to apply the repair mortar interface agent to the repaired base surface. Apply it evenly to avoid liquid accumulation. Apply it twice. The first time, dilute it with water at a volume ratio of 1:5, and the second time, dilute it with water at a volume ratio of 1:3. The drying time is 6-8 hours.

[0027] Use a blender to stir the repair mortar. After stirring evenly, add 7-8 times the weight of gravel with a diameter of 1-2 cm, mix evenly, then pour it into the treated pothole area and pound it with an appliance to make it solid until it is level with the original ground. After it dries, you can proceed to the next step.

[0028] For cracks smaller than 0.3mm in the base layer, after treating the ground with a grinder and carefully inspecting the ground, clean the cracks thoroughly with a vacuum cleaner. No additional work is required, and the interface agent used in the self-leveling mortar can seal the cracks.

[0029] For non-structural cracks in the base layer that are larger than 0.3mm and smaller than 1mm, they are generally called cracks and can be treated as follows: 1) Use an angle grinder to cut the crack into a "V" shape, and then use a vacuum cleaner to remove the dust; 2) Brush the cracks with the prepared interface agent twice; 3) After the interface agent has dried, prepare the repair mortar as required and pour it into the crack. After it has dried, you can proceed with the following construction steps.

[0030] For structural cracks in the base layer greater than 1mm: 1) First, use an angle grinder to cut the crack into a "V" shape, and then use a vacuum cleaner to remove the dust; 2) Use an angle grinder to make a 10-12mm groove in the direction perpendicular to the crack, and chisel and trim it. The groove should be 30-40cm long along the direction of the crack and the depth should be 2-3cm lower than the surface of the repaired structure. Then use a vacuum cleaner to clean the dust in the hole. 3). Cut the third-grade steel bars with a diameter of 10mm and a length of about 12-15cm, place them into the groove one by one, and then pour in the mixed self-leveling until the groove with the steel bars is full; 4) Fill the cut cracks according to the above method.

[0031] S3: After the cracks are repaired, the mortar at the repaired part is slightly higher than the base surface. After the repaired part is polished smooth as a whole, the flatness of the waterproof base layer can be achieved. If the flatness is too poor, self-leveling mortar needs to be used for leveling after the cracks are repaired.

[0032] Use self-leveling mortar to lay it in layers on the base to reach the specified thickness. The thickness of each layer shall not exceed 3mm. During construction, the newly poured self-leveling mortar shall be poured over the newly poured self-leveling mortar as soon as possible and integrated as soon as possible.

[0033] S4: After the base layer meets the construction conditions, round the inside and outside corners and strengthen the pipe roots and other parts. Moisten the surface of the base layer and apply two coats of cement-based penetrating crystallization waterproof coating with a total thickness of less than 1mm. After the first coat of cement-based penetrating crystallization waterproof coating has finally set, apply the second coat. The two coats of coating are applied in perpendicular directions. The main function of this process is to add a waterproof defense and the cement-based penetrating crystallization waterproof coating combines well with the concrete. After penetrating into the concrete, it is equivalent to filling the natural gaps in the concrete, forming rigid concrete self-waterproofing, making the original concrete structure denser, with better structural mechanical properties and higher bearing capacity.

[0034] Specifically, when applying cement-based penetrating crystallization waterproof coating, a semi-hard nylon brush should be used. It is not advisable to use a trowel, roller, paint brush, etc. When brushing, you should apply force back and forth to ensure that all concave and convex areas can be coated. The coating should be uniform and should not be too thin or too thick, and should be controlled within the unit dosage.

[0035] Wait for the first coat to set for 6-12 hours while it is still in a moist state. If the first coat is too dry, spray it with mist water before applying the synergist. The same amount of concentrate as the previous coat can be used for this coat. After the paint coating is applied, check whether the coating is uniform, whether the amount is accurate, and whether there is any missing coating. If there are any defects, they should be repaired in time.

[0036] Clean water must be used for maintenance. Spray maintenance should be done after the coating has finally set. No visible water should appear. Generally, spray water three times a day for several consecutive days. In hot or dry weather, spray multiple times to keep it moist and prevent the coating from drying out prematurely.

[0037] S5: Apply 1.5mm thick polymer cement-based waterproof coating on the cement-based penetrating crystallization waterproof coating. Whether to carry out this process is determined based on the room function, waterproof defense level, financial situation and the needs of the construction unit.

[0038] S6: After the polymer cement-based waterproof coating is applied, a 2.0mm thick layer of acrylic waterproof coating is applied to the surface. Because acrylic waterproof coating has good elasticity and is not easily damaged, it can serve as a protective layer while ensuring waterproofing, eliminating the need for a concrete protective layer. The acrylic waterproof coating is applied in layers. After the last coat of waterproof coating has dried for 48 hours, the first water test is conducted. If there is no threshold or the indoor and outdoor elevations are the same, a water barrier is first applied at the doorway using cement mortar or clay, generally about 50mm high. Then, water is stored to a depth of 20-30mm for 24 hours. No leakage is considered acceptable.

[0039] S7: Finally, apply the finishing layer on top of the acrylic waterproof coating.

[0040] Targeted areas prone to water leakage, such as floor drains, pipe roots, corners, and entrances and exits, should have an additional layer of carcass reinforcement material. This non-woven fabric should be at least 200mm wide, with an overlap of at least 100mm. During construction, apply a layer of waterproof coating first, then lay the carcass reinforcement material, and finally a layer of waterproof coating. The additional layer at pipe roots and casings should be brushed tightly to ensure it adheres securely to the pipe base. A 20mm x 20mm groove should be left around the pipe base, and then filled with dry, hard cement mortar with a cement-to-sand ratio of 1:3 by weight to prevent cracking.

[0041] The embodiments described above are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Without departing from the spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the scope of protection determined by the claims of the present invention.

Claims

1. A waterproof construction method for floor renovation in water-bearing rooms without rigid leveling layer and protective layer, characterized in that: The following steps are involved: S1: Clean the ground base to make it smooth and rough, and repair any cracks on the base; S2: After the cracks are repaired, the repaired area is polished and smoothed, the surface of the base layer is moistened, and a cement-based penetrating crystallizing waterproof coating is applied to the surface of the base layer; S3: After the construction of cement-based penetrating crystallization waterproof coating is completed, a layer of acrylic waterproof coating is applied on its surface to form a protective layer; S4: Construction of finishing layer.

2. The waterproof construction method for floor reconstruction of a water-filled room without rigid leveling layer and protective layer according to claim 1 is characterized in that: A polymer cement-based waterproof coating is provided between the cement-based penetrating crystallization waterproof coating and the acrylic waterproof coating.

3. The waterproof construction method for floor reconstruction of a water-filled room without rigid leveling layer and protective layer according to claim 1, characterized in that: In S1, the base layer is cleaned specifically, the weak surface of the ground is removed, and the floating sediment is sucked clean with a vacuum cleaner, and then the surface of the base layer is shot blasted and then preliminarily polished and smoothed with a grinder.

4. The waterproof construction method for floor reconstruction of a water-filled room without rigid leveling layer and protective layer according to claim 1 is characterized in that: In S1, crack repair includes: 1) For minor cracks that do not affect the structural safety, chisel, clean and wash them, then repair them with repair mortar; 2) For areas with large hollows, grouting treatment should be carried out; 3) Reinforce areas with large cracks.

5. The waterproof construction method for floor reconstruction of a water-filled room without rigid leveling layer and protective layer according to claim 4, characterized in that: For the ground with hollow base but not bulging or bulging within 8mm, grouting treatment is used.

6. The waterproof construction method for floor reconstruction of a water-filled room without rigid leveling layer and protective layer according to claim 4, characterized in that: For the ground where the hollowing of the base layer exceeds the original ground by more than 8mm, the method of chiseling and filling with mortar is adopted.

7. The waterproof construction method for floor reconstruction of a water-filled room without rigid leveling layer and protective layer according to claim 4, characterized in that: For cracks smaller than 0.3mm, use interface agent to seal the cracks; for non-structural cracks larger than 0.3mm and smaller than 1mm, cut the cracks into a V shape and then fill them with repair mortar; for structural cracks larger than 1mm, cut the cracks into a V shape, and cut grooves perpendicular to the crack direction, set steel bars in the grooves, and then fill them with repair mortar.

8. The waterproof construction method for floor reconstruction of a water-filled room without rigid leveling layer and protective layer according to claim 1, characterized in that: In S2, the cement-based penetrating crystallization waterproof coating is applied twice with a total thickness of not less than 1 mm. After the first coat of cement-based penetrating crystallization waterproof coating is finally set, the second coat of cement-based penetrating crystallization waterproof coating is applied. The two coats of coating are applied in perpendicular directions.

9. The waterproof construction method for floor reconstruction of a water-filled room without rigid leveling layer and protective layer according to claim 8, characterized in that: Wait 6-12 hours after the first coat of cement-based penetrating crystallization waterproof coating has finally set, and apply the second coat while it is still wet.

10. The waterproof construction method for floor reconstruction of a water-filled room without rigid leveling layer and protective layer according to claim 1, characterized in that: In S3, a layer of carcass reinforcement material is added to weak areas prone to water leakage, such as floor drains, pipe roots, corners, and entrances and exits, and then acrylic waterproof coating is applied.

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