Building green energy-saving roof waterproof construction method

Abstract

A building green energy-saving roof waterproof construction method relates to the technical field of building engineering roof waterproof, and comprises the following steps: S1, construction equipment and construction materials enter a site; s2, pipeline erection; s3, cleaning a base layer; s4, leaking stoppage of the pipeline channel; s5, paying off; s6, foam concrete construction is conducted for the first time; s7, thermal insulation layer construction; s8, foam concrete construction is conducted for the second time; s9, carrying out edge sealing construction by using a weather-proof sealant; and S10, carrying out special acceptance. The problems that a traditional coiled material waterproof roof is prone to leakage, hollowing, damage and the like are solved, the characteristics of heat preservation, impermeability, self-leveling and the like of foam concrete are brought into play, waterproof coiled materials and other layers serving the waterproof coiled materials are omitted, the structure is changed from a complex structure to a simple structure, roof loads are reduced, and the waterproof and heat preservation effects are good; meanwhile, compared with a traditional waterproof structure, the service life is greatly prolonged, and the environment-friendly, safe and energy-saving requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of roof waterproofing in construction engineering, and particularly to a construction method for waterproofing a green energy-saving roof of a building. Background Art

[0002] In modern construction projects, with the significant improvement in people's quality requirements for housing, the leakage problem of roofs has become an increasingly concerned focus. Roof leakage not only affects the image of the building but also seriously impacts the quality, performance, and service life of the building. Therefore, in order to ensure the quality and performance of the building, scientific and reasonable technical measures must be taken for roof waterproofing treatment.

[0003] At present, the construction of building roof roll waterproofing is a common waterproofing method in current construction projects. With the application of building roof roll waterproofing construction technology in roof waterproofing construction, the quality and efficiency of roof waterproofing construction have been greatly improved. However, there are often leakage problems in building roof roll waterproofing construction. Sometimes, due to poor construction of the leveling layer, depressions and bulges can cause the waterproof roll to fit poorly, resulting in leakage. Sometimes, leakage can also occur due to quality defects such as poor adhesion of the roll. For the construction of roof roll waterproofing, the construction process is not complex, but in the specific construction process, many details must be noted. If these details are ignored or improperly handled, it is very easy to cause quality problems in the construction of roof roll waterproofing. Therefore, in order to improve the level of roof waterproofing and solve the disadvantages in process technology, the applicant combines the characteristics of foam concrete such as heat preservation, impermeability, and self-leveling, and proposes a construction method for a new type of green energy-saving and leak-proof roof of a building. Summary of the Invention

[0004] The present invention provides a construction method for waterproofing a green energy-saving roof of a building, aiming to solve the leakage problem existing in the current construction of building roof roll waterproofing.

[0005] To solve the above problems, the technical solution of the present invention is as follows:

[0006] A construction method for waterproofing a green energy-saving roof of a building includes the following steps:

[0007] S1. Construction equipment and construction materials enter the site;

[0008] S2. Pipe erection;

[0009] S3. Substrate cleaning;

[0010] S4. Leak stoppage of the pipe passage;

[0011] S5. Layout;

[0012] S6, The first pass of foamed concrete construction;

[0013] S7, Thermal insulation layer construction;

[0014] S8, The second pass of foamed concrete construction;

[0015] S9, Weather-resistant sealant edge sealing construction;

[0016] S10, Special acceptance.

[0017] Preferably, the step S2 includes: First, position the roof rainwater outlets and exhaust pipes, then determine the installation positions and elevations according to the setting-out, and make adjustments and temporary fixings. Finally, use dry-hardened cement mortar mixed with UEA micro-expansion agent to densely fill the areas around the pipes and rainwater outlets. Leave a 20x20mm groove along the upper edge of the mortar around the pipes or rainwater outlets. After the mortar solidifies, seal it with building sealant.

[0018] Preferably, the step S3 includes: Use a spatula and a broom to clean the floor mortar and dust on the surface of the roof base layer, wipe dry the parts with water, and ensure that the base layer is dry, clean, and flat.

[0019] Preferably, the step S4 includes: Before pouring the foamed concrete, block the already installed pipe channels with flocculent materials or rubber plugs to prevent the concrete from entering the pipe channels and solidifying after pouring.

[0020] Preferably, the step S5 includes: According to the positions and elevations of the rainwater outlets, exhaust channels, and exhaust pipes in the roof design drawing, use a level to measure the heights of the highest and lowest points, make control points for each layer's construction method with cement mortar, and then pull a line to determine the height of the middle points; at the same time, on the surrounding parapet walls, pop up the roof height control lines and make construction measurement records.

[0021] Preferably, the step S6 includes: Select foamed concrete with a dry density grade of A05, pour the foamed concrete according to the slope and various green energy-saving technical indicators required by the design drawings, and perform surface finishing by troweling before the surface of the foamed concrete has not initially set; when pouring in a large area, adopt the method of pouring in partitions one by one, and the height of a single pour does not exceed 20 cm. After initial setting, perform secondary pouring; on the foamed concrete layer, perform slope setting and leveling according to the design requirements.

[0022] Preferably, the step S7 includes:

[0023] S71, Laying of plate-shaped thermal insulation layer: Lay the thermal insulation boards neatly along the roof, ensure smooth laying, and the joints are tight and straight; fill the gaps with broken thermal insulation boards densely;

[0024] S72, Cast-in-place or sprayed-in-place of integral thermal insulation layer:

[0025] (1) Laying of the loose insulation layer: Use expanded vermiculite with asphalt or vermiculite with cement to lay the loose insulation layer;

[0026] (2) Spraying construction of rigid polyurethane foam: Rigid polyurethane foam is of two components and is sprayed onto the base layer in layers by a spraying machine. During spraying, the ratio should be accurately controlled and the foaming thickness should be uniform.

[0027] Preferably, step S8 includes: Pouring the second layer of foam concrete on the insulation layer, and slope finding is carried out during the construction of the foam concrete protective layer.

[0028] Preferably, step S10 includes: Water storage test. Before the water storage test, ensure that the strength of the foam concrete meets the requirements and the weather-resistant sealant has been completely dried and cured; The time for the water storage test is 24 to 48 hours, and the specific time depends on the weather temperature; Use a marker pen to mark the water level line, and regularly check the change of the water level line and whether there is any leakage on the surrounding walls and the roof.

[0029] Preferably, in steps S6 and S8, when using foam concrete for slope finding, the slope should be > 1.5%; For the gutter and eaves gutter, slope finding is carried out longitudinally, and the slope should be > 1%, but the bottom drop of the gutter should be < 150 mm; Before construction, first check its foaming quality. After the foaming quality meets the requirements, add cement, fly ash and water quantitatively according to the mix ratio and stir for 2 - 3 minutes. After the preparation of the mixed slurry meets the requirements, pumping test injection construction can be carried out, and check the situation of the mixed slurry being transported to the construction surface by pumping. If the slurry is uniform, there is no floating and accumulation of foam on the upper part, no sediment on the lower part, the foam loss rate is less than 10%, there is no collapse, and there is no large amount of bleeding after pouring, large-area construction can be carried out;

[0030] When the pouring thickness > 10 cm, the construction is carried out in two layers. The time for the second layer construction is after the first layer has a certain strength after final setting (when it is possible for people to walk on it); The first layer pouring is carried out for slope finding according to the set slope; At the same time, during the second layer pouring, floating bubbles are removed and scraping treatment is carried out while removing the floating bubbles on the pouring surface to achieve the effect of sealing holes and meet the waterproof requirements; Cubic test blocks should be left during pouring for measuring the compressive strength and density at 28 days; After the roof pouring is completed, water spraying and curing are carried out in a timely manner according to the weather temperature; When the temperature > 30℃, water spraying and curing are carried out in advance. When the temperature < 10℃, plastic cloth should be covered in time when the slurry starts to set; The overall cast-in-place insulation layer should have a flat surface and correct slope finding. The allowable deviation of the insulation layer thickness is -5% to +10%, and the surface flatness ≤ 7 mm. After construction is completed, finished product protection should be done well.

[0031] The construction method of a green energy-saving roof waterproofing for a building in the present invention has the following beneficial effects:

[0032] The present invention solves the problems of easy leakage, hollowing, and damage of traditional coiled material waterproof roofs. By giving play to the heat preservation, impermeability, self-leveling and other characteristics of foamed concrete, the setting of waterproof coiled materials and other layers serving the waterproof coiled materials is cancelled, the structure is transformed from complex to simple, the roof load is reduced, the waterproof and heat preservation effects are good, and at the same time, the service life is greatly improved compared with traditional waterproofing, meeting the requirements of green environmental protection, safety and energy conservation. Brief Description of the Drawings

[0033] Figure 1 - Schematic diagram of the overall structure of the present invention;

[0034] In the figure: 1 - concrete floor slab, 2 - the first layer of foamed concrete, 3 - heat preservation layer, 4 - the second layer of foamed concrete, 5 - weather-resistant sealant. Detailed Description of the Preferred Embodiment

[0035] The following is a detailed description of the embodiments of the present invention in a step-by-step manner. This description is only for the preferred embodiments of the present invention and is not used to limit the protection scope of the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0036] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the purpose of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, specific orientation structure and operation. Therefore, it should not be construed as a limitation of the present invention.

[0037] Embodiment 1

[0038] A construction method for waterproofing of a green energy-saving roof in building construction, as Figure 1 shown, includes the following steps:

[0039] S1. Construction equipment and construction materials enter the site;

[0040] S2. Pipeline erection;

[0041] S3. Substrate cleaning;

[0042] S4. Leakage plugging of pipeline channels;

[0043] S5. Layout;

[0044] S6. Construction of the first layer of foamed concrete;

[0045] S7. Construction of the heat preservation layer;

[0046] S8. Construction of the second layer of foamed concrete;

[0047] S9. Construction of weatherproof sealant edge sealing;

[0048] S10. Special acceptance.

[0049] Example 2

[0050] Based on Example 1, this example discloses that the step S2 includes: First, position the rainwater outlets and exhaust pipes on the roof, then determine the installation positions and elevations according to the setting-out, and make adjustments and temporary fixings. Finally, use dry-hardened cement mortar mixed with UEA micro-expansion agent to densely fill the surroundings of the pipes and rainwater outlets. Leave a 20x20mm groove along the upper edge of the mortar around the pipes or rainwater outlets. After the mortar solidifies, seal it with building sealant.

[0051] Example 3

[0052] Based on Examples 1 and 2, this example discloses that the step S3 includes: Use a spatula and a broom to clean the floor mortar and dust on the surface of the roof base layer, wipe the parts with water clean, and ensure that the base layer is dry, clean, and flat.

[0053] Example 4

[0054] Based on Examples 1, 2, and 3, this example discloses that the step S4 includes: Before pouring the foam concrete, block the already installed pipe channels with flocculent materials or rubber plugs to prevent the concrete from entering the pipe channels and solidifying after pouring.

[0055] Example 5

[0056] Based on Examples 1-4, this example discloses that the step S5 includes: According to the positions and elevations of the rainwater outlets, exhaust channels, and exhaust pipes in the roof design drawing, use a level to measure the heights of the highest and lowest points, make control points for each layer of construction with cement mortar, and then pull a line to determine the height of the intermediate points; at the same time, on the surrounding parapet walls, pop up the roof height control lines and make construction measurement records.

[0057] Example 6

[0058] Based on Examples 1-5, this example discloses that the step S6 includes: Select a dry density grade of A05 (dry density 500 kg / m 3, foam concrete with a thermal conductivity of 0.12 W / (m·K) and a water absorption rate grade of W5 (5%) is poured according to the slope and various green energy-saving technical indicators required by the design drawings. The purpose of this step is to form a waterproof leveling and slope-forming layer on the roof. During pouring, it should be ensured that the thickness of the foam concrete meets the design requirements, and the operation should be carried out strictly in sequence to prevent disturbance. At the same time, the surface of the foam concrete should be polished and finished before initial setting; when pouring in a large area, the method of pouring in partitions and piece by piece is adopted, and the height of one-time pouring does not exceed 20 cm, and secondary pouring is carried out after initial setting; on the foam concrete layer, slope formation and leveling are carried out according to the design requirements.

[0059] Example 7

[0060] Based on Examples 1-6, this example discloses that the step S7 includes:

[0061] S71. Laying of plate-shaped insulation layer: The insulation board is laid neatly along the roof to ensure smooth laying, with tight and straight joints; the gaps are filled tightly with broken insulation boards.

[0062] S72. Cast-in-place or sprayed-in-place of the integral insulation layer:

[0063] (1) Laying of loose insulation layer: Use expanded asphalt vermiculite or cement vermiculite to lay the loose insulation layer.

[0064] (2) Sprayed-in-place construction of rigid polyurethane foam: Rigid polyurethane foam is in two components and is sprayed onto the base layer in layers by a spraying machine. During spraying, it should be ensured that the ratio is accurate and the foaming thickness is uniform.

[0065] Example 8

[0066] Based on Examples 1-7, this example discloses that the step S8 includes: Pouring the second layer of foam concrete on the insulation layer, and slope formation is carried out during the construction of the foam concrete protective layer. The second layer of foam concrete can play a protective role for the insulation layer and enhance the durability and aesthetics of the roof. It should be noted that if it is necessary to meet the use functions such as heat preservation and insulation in cold regions, two kinds of admixtures, antifreeze and expansion agent, need to be added to the second layer of foam concrete.

[0067] Example 9

[0068] Based on Embodiments 1 - 8, this embodiment discloses that the step S9 includes: ensuring the selection of high-quality weatherproof sealant products to guarantee the project quality from the source, avoiding construction under extreme temperature or humidity conditions, maintaining the construction temperature between 5°C and 40°C, and having moderate humidity; ensuring that the base material is dry, clean, free of oil stains, dust and other impurities before construction. Clean the construction surface with a solvent and ensure sealing within 1 hour after cleaning; use a caulking gun to evenly and continuously extrude the glue to ensure that the interface is filled with sealant, avoiding the generation of bubbles or cavities. Use a scraper to correct the excess glue and remove the excess glue as soon as possible.

[0069] During the construction period of season alternation, construction should be carried out in accordance with the standard construction process flow. Select a foam rod with a suitable diameter and use a suitable tool to press the foam rod to prevent the foam rod from being punctured and causing blisters. Apply glue after ensuring that the base material and the foam rod are dry to prevent blisters caused by the volatilization of water vapor at the joint under high temperature and avoid mixing air bubbles during the glue injection process.

[0070] Embodiment 10

[0071] Based on Embodiments 1 - 9, this embodiment discloses that the step S10 includes: a water storage test. Before conducting the water storage test, ensure that the strength of the foam concrete meets the requirements and the weatherproof sealant has been completely dried and cured; the time for the water storage test is 24 to 48 hours, and the specific time depends on the weather temperature; use a marker pen to mark the water level line and regularly check the change of the water level line and whether there is any leakage on the surrounding walls and roofs.

[0072] Embodiment 11

[0073] Based on Embodiments 1 - 10, this embodiment discloses that in steps S6 and S8, when using foam concrete for slope finding, the slope should be >1.5%; for gutters and eaves gutters, slope longitudinally, the slope should be >1%, but the bottom drop of the gutter should be <150mm; before construction, first check its foaming quality. The foam appearance should have fine sponge-like small bubbles, not flow randomly, and the performance indicators of the foaming agent are as shown in Table 1 below. After the foaming quality meets the requirements, add cement, fly ash and water quantitatively according to the mixing ratio and stir for 2 - 3 minutes to make the slurry have a suitable consistency, be delicate, smooth, shiny and elastic, and have good uniformity. After the preparation of the mixed slurry meets the requirements, pumping test injection construction can be carried out to check the situation of the mixed slurry being transported to the construction surface by pumping. If the slurry is uniform, there is no floating and accumulation of foam on the upper part, no sediment at the lower part, the foam loss rate is less than 10%, there is no collapse, and there is no significant bleeding after pouring, large-area construction can be carried out;

[0074] Table 1 Performance indicators of the foaming agent

[0075] Project Index Foaming multiple ＞20 Settlement distance / mm ＜10 Water bleeding volume / ml ＜80

[0076] When the pouring thickness > 10 cm, the construction is carried out in two layers. The second layer is constructed after the first layer has set and gained a certain strength (when it is possible to walk on it). The first layer is poured with slope according to the set-out slope. At the same time, during the pouring of the second layer, the floating bubbles are removed and the surface is leveled while removing the bubbles on the pouring surface to achieve the effect of sealing holes and meet the waterproof requirements. Cubic test blocks should be left during pouring to measure the compressive strength and density at 28 days. After the roof pouring is completed, water spraying and curing are carried out in a timely manner according to the weather temperature. When the temperature > 30 °C, water spraying and curing are carried out in advance. When the temperature < 10 °C, plastic sheets should be covered in time when the slurry begins to set. The overall cast-in-place insulation layer should have a flat surface and correct slope. The allowable deviation of the insulation layer thickness is -5% to +10%, and the surface flatness ≤ 7 mm. After the construction is completed, the finished product protection should be done well.

[0077] Through the above steps, a foam concrete roof with good heat preservation and waterproof effects can be constructed. This method not only has a short construction period, but also has a small roof load, good waterproof and heat preservation effects, reduces the generation of waste and garbage, etc., is green and environmentally friendly, and is safe and energy-saving.

Claims

1. A construction method for waterproofing of a green energy-saving roof in building construction, characterized by including the following steps: S1. Construction equipment and construction materials enter the site; S2. Pipeline erection; S3. Substrate cleaning; S4. Leak stoppage of pipeline channels; S5. Setting out; S6. First pass of foam concrete construction; S7. Thermal insulation layer construction; S8. Second pass of foam concrete construction; S9. Weather-resistant sealant edge sealing construction; S10. Special acceptance.

2. The construction method of a waterproof roofing for green energy-saving in building construction according to claim 1, characterized in that, The step S2 includes: First, position the roof rainwater outlets and exhaust pipes, then determine the installation positions and elevations according to the setting out, make adjustments and temporary fixings, and finally use dry-hard cement mortar mixed with UEA micro-expansion agent to densely fill the surroundings of the pipelines and rainwater outlets. Leave a 20x20mm groove along the upper edge of the mortar around the pipelines or rainwater outlets. After the mortar solidifies, seal it with building sealant.

3. The construction method of a waterproofing for a green energy-saving roof of a building as claimed in claim 2, characterized in that, The step S3 includes: Use a spatula and a broom to clean the landing mortar and dust on the surface of the roof substrate, wipe the parts with water clean, and ensure that the substrate is dry, clean and flat.

4. The construction method of a waterproof roofing for green energy-saving in building construction as claimed in claim 3, characterized in that, The step S4 includes: Before pouring the foam concrete, block the already installed pipeline channel openings with flocculent materials or rubber plugs to prevent the concrete from entering the pipeline channels and solidifying after pouring.

5. The construction method of a waterproof roof for green energy conservation in building construction as described in claim 4, characterized in that, The step S5 includes: According to the positions and elevations of the rainwater outlets, exhaust channels and exhaust pipes in the roof design drawing, use a level to measure the heights of the highest and lowest points respectively, make control points for each layer's construction method with cement mortar, and then pull a line to determine the heights of the intermediate points; at the same time, on the surrounding parapet walls, pop up the roof height control lines and make good construction measurement records.

6. The construction method of a waterproof roof for green energy conservation in building construction as claimed in claim 5, characterized in that, The step S6 includes: Select foam concrete with a dry density grade of A05, pour the foam concrete according to the slope and various green energy-saving technical indicators required by the design drawing, and perform surface finishing by troweling before the surface of the foam concrete has not initially set; when pouring in a large area, adopt the method of pouring in zones and slices one by one, and the height of one-time pouring does not exceed 20cm. Perform secondary pouring after initial setting; on the foam concrete layer, perform slope finding and leveling according to the design requirements.

7. The construction method of a waterproof roofing for green energy conservation in building construction according to claim 6, characterized in that, The step S7 includes: S71. Installation of plate-shaped thermal insulation layer: Lay the thermal insulation boards neatly along the roof to ensure smooth laying, with tight and straight joints; fill the gaps with broken thermal insulation boards densely. S72. Cast-in-place or spray-applied integral thermal insulation layer: (1) Laying of loose thermal insulation layer: Use expanded asphalt vermiculite or cement vermiculite to lay the loose thermal insulation layer; (2) Spray-applied construction of rigid polyurethane foam: Rigid polyurethane foam is two-component and is sprayed onto the substrate in layers by a spraying machine. During spraying, ensure accurate proportioning and uniform foaming thickness.

8. The construction method of a waterproof roof for green energy-saving building as claimed in claim 7, characterized in that, The step S8 includes: Pour the second pass of foam concrete on the thermal insulation layer, and perform slope finding during the construction of the foam concrete protection layer.

9. The construction method of a waterproof roofing for green energy conservation in building construction as described in claim 8, characterized in that, The step S10 includes: Water storage test. Before conducting the water storage test, ensure that the strength of the foam concrete meets the requirements and the weather-resistant sealant has been completely dried and cured; the time of the water storage test is 24 to 48 hours, and the specific time depends on the weather temperature; use a marker pen to mark the water level line, and regularly check the change of the water level line and whether there is any leakage on the surrounding walls and the roof.

10. The construction method of a waterproof roof for green energy conservation in building construction as described in claim 9 is characterized in that, In steps S6 and S8 described above, when using foamed concrete for slope finding, the slope should be > 1.5%; for gutters and eaves gutters, slope finding should be carried out longitudinally, with the slope > 1%, but the bottom drop of the gutter should be < 150 mm; before construction, first check its foaming quality. After the foaming quality meets the requirements, add cement, fly ash and water quantitatively according to the mix ratio and stir for 2 - 3 minutes. After the preparation of the mixed slurry meets the requirements, pumping test pouring construction can be carried out. Check the situation of the mixed slurry being pumped to the construction surface. If the slurry is uniform, there is no floating and accumulation of foam on the upper part, no sediment on the lower part, the foam loss rate is less than 10%, there is no collapse, and there is no large amount of bleeding after pouring, large-area construction can be carried out; When the pouring thickness > 10 cm, construction is carried out in two layers. The construction of the second layer is carried out after the first layer has set and has a certain strength (when it is possible to walk on it); the first layer is poured and slope finding is carried out according to the set slope; at the same time, during the pouring of the second layer, floating bubbles are removed and scraping treatment is carried out while removing the floating bubbles on the pouring surface to achieve the effect of closing the holes and meet the waterproof requirements; cube test blocks should be left during pouring to measure the compressive strength and density at 28 days; after the roofing pouring is completed, watering and curing are carried out in a timely manner according to the weather temperature; when the temperature > 30℃, watering and curing are carried out in advance, and when the temperature < 10℃, plastic sheets should be covered in time when the slurry begins to set; the overall cast-in-place insulation layer should have a flat surface and correct slope finding. The allowable deviation of the thickness of the insulation layer is -5% to +10%, and the surface flatness ≤ 7 mm. After construction is completed, finished product protection should be done well.

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