CN112681623A - Construction method of water-proof layer of roof coating assembled on skyscraper plate at plate joint - Google Patents
Construction method of water-proof layer of roof coating assembled on skyscraper plate at plate joint Download PDFInfo
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- CN112681623A CN112681623A CN202011542155.XA CN202011542155A CN112681623A CN 112681623 A CN112681623 A CN 112681623A CN 202011542155 A CN202011542155 A CN 202011542155A CN 112681623 A CN112681623 A CN 112681623A
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Abstract
The invention relates to a construction method of a water-proof layer of a skynet plate split-mounting type roof coating at a plate joint, which comprises the steps of laying polyethylene polypropylene coiled materials, spraying a concrete interface agent, spraying a gunite coating, sticking a gunite cloth, fixedly connecting a plurality of pieces of galvanized flat iron and the like, wherein the steps are mutually linked and completed, the construction method of the conventional water-proof layer at the plate joint of the skynet plate split-mounting type roof is essentially overturned, the integral load of a skynet plate roof is reduced, the water-proof effect of the water-proof layer can reach the I level, the wind-uncovering resistance and the dislocation resistance of the skynet plate are effectively enhanced, and the ageing resistance is greatly improved.
Description
Technical Field
The invention belongs to the technical field of building roof waterproof construction, and particularly relates to a construction method of a water-proof layer of a skynet plate assembled roof coating at a plate joint.
Background
For a splicing type building, a skyscraper plate 1 is usually welded on a portal steel frame to serve as a roof, the roof needs to be constructed by a waterproof layer, and the conventional construction steps at the plate joint are combined with the steps shown in the figure 1 as follows:
firstly, filling plate seams: when the width of the adjacent slab joints is large or the upper part is narrow and the lower part is wide, the construction steel bars for plugging are welded in the slab joints, then the foam plastic bars are paved above the construction steel bars, and finally the slab joints are filled with fine aggregate concrete to be tightly sealed.
Secondly, laying bidirectional reinforcing mesh sheets: the space between the two-way reinforcing steel bar net sheets, the width of the dividing joint and the space between the adjacent longitudinal and transverse joints are determined according to specific conditions.
Thirdly, pouring a concrete leveling layer: pouring fine stone concrete with a certain thickness on the roof of the skyscraper plate and leveling.
Fourthly, sticking the waterproof roll: and after the concrete leveling layer is solidified, fully adhering the polyvinyl chloride waterproof coiled material 3 on the concrete leveling layer 2 through the adhesive.
Fifthly, pouring a protective layer: after the polyvinyl chloride waterproof roll is adhered, mortar or concrete with a certain thickness is poured on the surface of the polyvinyl chloride waterproof roll to serve as a protective layer 11.
Although the construction has a certain waterproof effect, the following problems can be caused after a plurality of years:
1. wind-force can be when great at the parapet of roofing, position formation wind-force swirl such as movement joint, wind-force swirl can make the skynet of whole roofing produce the trace and rock, and these rock and can lead to the fracture of coming unstuck between waterproof roll material layer and the roofing, and waterproof roll material will weld in seam crossing when laying, and especially the negative and positive corner welding is complicated, rocks and also can lead to these welding seams to be pulled apart, and above-mentioned two kinds of circumstances all can lead to the roofing to lose water-proof effects.
2. Under the influence of strong wind or peripheral vibration, the skylights board of the roof can be dislocated or separated, and the building roof can not meet the original design waterproof requirement due to the separation of the waterproof coiled material from the skylights board by shearing force or internal fracture by tensile force, which is particularly common in coastal areas with strong typhoon or in the vibration influence range of railway trains.
3. Waterproofing membrane uses the adhesive to paste with the concrete screed-coat, and the ageing age of adhesive often is shorter than waterproofing membrane, and its adhesive has ageing inefficacy when waterproofing membrane is in the age that can also normally use, finally leads to whole waterproof layer air-laid on the roofing, forms the leakage water passageway between waterproof layer and roofing, and the long-time soaking of skyline board finally leads to the plate body to rot or even drop, can't realize waterproof function, and the security of building also can not be ensured.
How to eliminate and solve the above problems is one of the subjects of the common research in the field, but no research results for solving the above problems have been found so far.
Disclosure of Invention
In order to solve the problems, the invention provides a construction method of a water-proof layer of a skynet plate assembly type roof coating at a plate seam, which essentially overturns the construction mode of a conventional water-proof layer at the plate seam by paving a polyethylene polypropylene coiled material, spraying a concrete interface agent, spraying a gunite coating, sticking a gunite cloth, fixedly connecting a plurality of galvanized flat irons and the like, improves the safety of an assembly type building, and has a water-proof effect reaching the I level.
In order to achieve the purpose, the invention adopts the following technical scheme:
a construction method of a water-proof layer of a roof coating assembled by a skyscraper plate at a plate seam uses an acrylic polymer cement water-proof coating, a polyester filament non-woven fabric, a polyethylene polypropylene coiled material and a concrete interface agent, wherein the acrylic polymer cement water-proof coating is prepared into a guniting coating according to the reference mixture ratio of parts by weight: acrylic polymer cement waterproof paint and water in the ratio of 1 to 1; the filling of the interpane slab gap is carried out in a conventional manner: when the width of the adjacent slab joints is larger or the upper part is narrow and the lower part is wide, a construction steel bar for plugging is welded in the slab joints, then a foam plastic bar is paved above the construction steel bar, and finally the slab joints are filled and densely filled with fine aggregate concrete for sealing treatment; the method is characterized in that:
the process of preparing the pulp soaking cloth from the polyester filament non-woven fabric comprises the following steps: soaking the polyester filament non-woven fabric in the soaking slurry until the polyester filament non-woven fabric is saturated and does not drip, wherein the soaking slurry comprises the following reference proportions in parts by weight: acrylic polymer cement waterproof coating emulsion, sulpho-aluminosilicate cement and water are 2: 4: 1, and the sulpho-aluminosilicate cement is required to be PO42.5 or PO 52.5;
the construction steps after the slab joint filling is finished in the conventional mode are as follows:
firstly, respectively paving polymer mortar with the width not less than 50mm along two sides of all plate seams of adjacent skyscrapers, then pasting polyethylene polypropylene coiled materials with the width not less than 240mm on the two polymer mortars and pressing the polyethylene polypropylene coiled materials to be compact, and the requirement that the polyethylene polypropylene coiled materials meet the requirement of 400g/m2Thus, criss-cross polyethylene polypropylene coiled material grids are formed at all plate seams of the skynet plate;
the polymer mortar is prepared from the following components in parts by weight: preparing a material A from polymer cement mortar emulsion and water according to the ratio of 2: 1, preparing a material B from cement and mortar according to the ratio of 1: 2-2.5, and finally preparing polymer mortar from the material A and the material B according to the ratio of 1: 2, wherein the mortar is required to be 30-50 meshes;
uniformly spraying a concrete interface agent on the polyethylene polypropylene coiled material and the skynet plate according to a conventional mode after the polymer mortar is solidified and the polyethylene polypropylene coiled material is firmly adhered;
uniformly spraying the guniting paint at the construction site of the concrete interface agent when the coating of the concrete interface agent is not sticky and does not influence spraying, and sticking a dipping cloth on the surface of the guniting paint after the guniting paint is completely dried to finish the first waterproof layer construction, wherein the spraying thickness of the first waterproof layer is controlled to be about 1.0 mm;
fourthly, after the first waterproof layer is dried, spraying guniting paint on the surface of the first waterproof layer, after the guniting paint is dried, sticking a piece of dipping cloth on the surface of the first waterproof layer to form a second waterproof layer, after the second waterproof layer is dried, spraying the guniting paint on the surface of the second waterproof layer to form a third waterproof layer, and controlling the total thickness of the second waterproof layer and the third waterproof layer to be about 1.5 mm;
manufacturing a plurality of galvanized flat irons, respectively drilling screws through two ends of each galvanized flat iron and all coatings by using a handheld electric drill, and then drilling the screws into channel steel at the edge of the skynet plate, wherein the galvanized flat irons are fixedly connected at all joints according to the actual length and width of the skynet plate, and the plurality of galvanized flat irons are fixedly connected and distributed in a plum blossom-shaped layout;
after the installation of the galvanized flat iron is finished, repeating the fourth step, namely spraying a waterproof layer with the thickness of 1.5mm, wherein the total thickness of the waterproof layer reaches about 1.5mm and the waterproof layer completely covers the galvanized flat iron, so as to finish the protection of the waterproof layer at the galvanized flat iron;
the spraying or high-pressure spraying or brushing in the related steps is carried out, and the pressure of a spray gun is controlled to be more than or equal to 0.15MPa during high-pressure spraying.
Due to the adoption of the technical scheme, the invention has the following positive effects:
1. the construction method of the invention comprises the steps of laying polyethylene polypropylene fiber coiled material, spraying concrete interface agent, spraying gunite coating, pasting gunite cloth, fixedly connecting a plurality of galvanized flat irons and the like, and the steps are mutually connected in one go.
2. The construction method essentially overturns the construction mode of the conventional waterproof layer at the seams of the spliced roof boards of the skyline boards, and the tensile strength and ultraviolet resistance of the acrylic polymer cement waterproof coating completely meet the requirements of outdoor use, so that a protective layer is not required to be constructed on the waterproof layer, the integral load of the skyline board roof is reduced, the wind uncovering resistance and the dislocation resistance of the skyline boards are effectively enhanced, the ageing resistance is greatly improved, the subsequent maintenance is time-saving, labor-saving, convenient and quick, and according to related experiments, the waterproof layer of the coating with the thickness of 2.5mm constructed by the method can achieve the I-level waterproof effect.
Drawings
Fig. 1 is a construction diagram of a conventional technique.
FIG. 2 is a schematic view of the construction method of the present invention.
In the above figures: 1-a skynet, 2-a concrete leveling layer, 3-a waterproof coiled material, 4-polymer mortar, 5-a polyethylene polypropylene coiled material, 6-a first waterproof layer, 7-a second waterproof layer and a third waterproof layer, 8-galvanized flat iron, 9-screws, a waterproof layer with the thickness of 10-1.5mm and 11-a protective layer.
Detailed Description
The invention relates to a construction method of a water-proof layer of a skynet split mounting type roof coating at a plate seam, which has obvious substantial characteristics, essentially reverses the construction mode of a conventional water-proof layer, lightens the integral load of a skynet roof, improves the safety of a split mounting type building, is an innovative technology worthy of large-area popularization, and particularly can be referred to all building plate seams.
With reference to fig. 2, the construction method of the present invention uses an acrylic polymer cement waterproof coating, a polyester filament nonwoven fabric, a polyethylene polypropylene fiber coil 5, and a concrete interface agent.
The performance index requirements of the acrylic polymer cement waterproof coating are as follows:
the waterproof performance is not less than 0.5MPa, the waterproof performance is not more than 60 minutes, the tensile strength is more than 1.2MPa, the bonding strength is more than 1MPa, the elongation at break of heating treatment is more than 150%, the elongation at break of alkali treatment is more than 150%, the elongation at break of soaking treatment is more than 150%, the elongation at break of ultraviolet treatment is not less than 160%, the heat resistance is not less than 100 ℃, the waterproof material can be used for a long time, and has no flow, sliding, dripping and dense bubbles on the surface, the combustion performance is B1 grade, and the low-temperature flexible phi 10mm rod has no cracks at-20 ℃.
The acrylic polymer cement waterproof coating has good tensile bonding strength, can effectively resist wind uncovering and dislocation, can ensure that the tensile strength and the elongation at break under long-time ultraviolet irradiation reach the use requirements of a I-level waterproof layer, and can effectively resist aging.
The polyester filament non-woven fabric is required to be 160-200 g/m2And elongation at break > 40%.
In combination with a conventional mode adopted for filling the plate joint of the skyscraper plate 1, the construction method mainly comprises six steps, each step is executed by referring to the technical scheme, and no further description is provided, but each step needs to be supplemented as follows:
firstly, the polymer mortar 4 is preferably paved at a height of about 10mm, or the polyethylene polypropylene coiled material can be adhered, the polymer mortar is used for elevating and the polyethylene polypropylene coiled material is paved in the air, so that a certain telescopic space is reserved at the positions of all plate seams of the waterproof layer, the reserved telescopic space can effectively buffer the relative displacement between the plate seams of the interpane plates when the partial plates of the interpane plates are dislocated or separated, and the fracture limit of the waterproof layer is increased in a phase-changing manner.
Secondly, the concrete interface agent is polymer modified cement mortar which is sold in the market, can enhance the bonding force of the waterproof layer to the base layer, has good water resistance, damp and heat resistance and freeze-thaw resistance, avoids the phenomena of hollowing and shelling of the plastering layer, thereby replacing manual roughening treatment and saving time and labor.
And fourthly, controlling the total thickness of the sprayed first waterproof layer 6, the sprayed second waterproof layer and the sprayed third waterproof layer 7 to be about 2.5mm, achieving a waterproof effect of I grade according to a waterproof layer with the thickness of 2.5mm in relevant experiments, and combining the sixth step to ensure that the effective service life of the waterproof layer with the thickness of 4.0mm at the plate seam reaches at least more than 10 years.
Fifthly, by utilizing the characteristic that the galvanized flat iron 8 is not easy to rust, the front three waterproof layers and the polyethylene polypropylene coiled material at the plate joint are compacted by the galvanized flat irons fixed by the screws 9, so that the whole wind uncovering resistance of the waterproof layer can be effectively improved.
Sixthly, the construction of the waterproof layer 10 with the thickness of 1.5mm ensures the waterproofness of the galvanized flat iron and the screw, further blocks a water leakage channel downwards from a screw drilling hole, and ensures the integrity of the waterproof layer.
The construction method of the coating waterproof layer can be applied to other parts of the assembled roof, even popularized to the waterproof construction of the conventional building roof, the construction method can be constructed according to the manufacturing method of the waterproof layer in the second step to the fourth step, the first step, the fifth step and the sixth step are added at the positions needing to cross the seams, and the construction method does not need to construct a protective layer on the waterproof layer of the building roof, so that the whole load of the building roof is greatly reduced, and the safety of the building is improved.
The construction method of the invention adopts a conventional mode and the technical scheme to jointly form a mutual-connection complete construction technology through the filling of the interplanetary plate seams, the mutual association and the lack are impossible, the complete construction technology can not be separated and evaluated separately, the creativity is obvious and outstanding, and any other construction method improved from the technical scheme belongs to the protection scope of the invention.
Claims (1)
1. The construction method of the waterproof layer of the roof coating assembled on the skyscraper plate at the plate joint uses acrylic polymer cement waterproof coating, polyester filament non-woven fabric, polyethylene polypropylene coiled material and concrete interface agent, wherein the acrylic polymer cement waterproof coating is prepared into the guniting coating according to the reference proportion of parts by weight: acrylic polymer cement waterproof paint and water in the ratio of 1 to 1; the filling of the plate gaps of the skynet plate (1) is carried out in a conventional mode: when the width of the adjacent slab joints is larger or the upper part is narrow and the lower part is wide, a construction steel bar for plugging is welded in the slab joints, then a foam plastic bar is paved above the construction steel bar, and finally the slab joints are filled and tightly sealed by fine aggregate concrete; the method is characterized in that:
the process of preparing the pulp soaking cloth from the polyester filament non-woven fabric comprises the following steps: soaking the polyester filament non-woven fabric in the soaking slurry until the polyester filament non-woven fabric is saturated and does not drip, wherein the soaking slurry comprises the following reference proportions in parts by weight: acrylic polymer cement waterproof coating emulsion, sulpho-aluminosilicate cement and water are 2: 4: 1, and the sulpho-aluminosilicate cement is required to be PO42.5 or PO 52.5;
the construction steps after the slab joint filling is finished in the conventional mode are as follows:
firstly, polymer mortar (4) with the width not less than 50mm is respectively paved along the two sides of all plate seams of adjacent skyscrapers, then polyethylene polypropylene coiled materials (5) with the width not less than 240mm are pasted on the two polymer mortars and pressed tightly, and the polyethylene polypropylene coiled materials are required to meet the requirement that the polyethylene polypropylene coiled materials meet the requirement of 400g/m2Thus, criss-cross polyethylene polypropylene coiled material grids are formed at all plate seams of the skynet plate;
the polymer mortar is prepared from the following components in parts by weight: preparing a material A from polymer cement mortar emulsion and water according to the ratio of 2: 1, preparing a material B from cement and mortar according to the ratio of 1: 2-2.5, and finally preparing polymer mortar from the material A and the material B according to the ratio of 1: 2, wherein the mortar is required to be 30-50 meshes;
uniformly spraying a concrete interface agent on the polyethylene polypropylene coiled material and the skynet plate according to a conventional mode after the polymer mortar is solidified and the polyethylene polypropylene coiled material is firmly adhered;
thirdly, when the concrete interface agent coating is not sticky and does not influence spraying, uniformly spraying the guniting coating on the concrete interface agent construction site, and sticking a dipping cloth on the surface of the guniting coating after the guniting coating is completely dried to finish the construction of a first waterproof layer (6), wherein the spraying thickness of the first waterproof layer is controlled to be about 1.0 mm;
fourthly, after the first waterproof layer is dried, spraying guniting paint on the surface of the first waterproof layer, after the guniting paint is dried, sticking a piece of impregnated cloth on the surface of the first waterproof layer to form a second waterproof layer, then after the second waterproof layer is dried, spraying guniting paint on the surface of the second waterproof layer to form a third waterproof layer, and controlling the total thickness of the spraying of the second waterproof layer and the third waterproof layer (7) to be about 1.5 mm;
manufacturing a plurality of galvanized flat irons (8), respectively drilling screws (9) through two ends of each galvanized flat iron and all coatings by using a handheld electric drill, and then drilling the screws into channel steel at the edge of the skylights plate, wherein the galvanized flat irons are fixedly connected at all joints according to the actual length and width of the skylights plate, and the plurality of galvanized flat irons are fixedly connected and distributed in a plum blossom-shaped layout;
after the installation of the galvanized flat iron is finished, repeating the fourth step, namely spraying a waterproof layer (10) with the thickness of 1.5mm, wherein the total thickness of the waterproof layer reaches about 1.5mm and the waterproof layer completely covers the galvanized flat iron, so as to finish the protection of the waterproof layer at the galvanized flat iron;
the spraying or high-pressure spraying or brushing in the related steps is carried out, and the pressure of a spray gun is controlled to be more than or equal to 0.15MPa during high-pressure spraying.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011542155.XA CN112681623A (en) | 2020-12-24 | 2020-12-24 | Construction method of water-proof layer of roof coating assembled on skyscraper plate at plate joint |
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| CN202011542155.XA CN112681623A (en) | 2020-12-24 | 2020-12-24 | Construction method of water-proof layer of roof coating assembled on skyscraper plate at plate joint |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459540A (en) * | 2002-05-24 | 2003-12-03 | 唐陆平 | Instant consolidated water proof paint roof surface |
| CN102661015A (en) * | 2012-05-16 | 2012-09-12 | 中国江苏国际经济技术合作公司 | Single-layer waterproof prepared roofing and construction method thereof |
| US20150013247A1 (en) * | 2011-04-14 | 2015-01-15 | Timothy Pendley | Thermal barrier about roof support structure |
| CN111911190A (en) * | 2020-09-11 | 2020-11-10 | 何峰 | Improved construction method for caulking shield tunnel segment |
-
2020
- 2020-12-24 CN CN202011542155.XA patent/CN112681623A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1459540A (en) * | 2002-05-24 | 2003-12-03 | 唐陆平 | Instant consolidated water proof paint roof surface |
| US20150013247A1 (en) * | 2011-04-14 | 2015-01-15 | Timothy Pendley | Thermal barrier about roof support structure |
| CN102661015A (en) * | 2012-05-16 | 2012-09-12 | 中国江苏国际经济技术合作公司 | Single-layer waterproof prepared roofing and construction method thereof |
| CN111911190A (en) * | 2020-09-11 | 2020-11-10 | 何峰 | Improved construction method for caulking shield tunnel segment |
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Application publication date: 20210420 |
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