CN112681628A - Construction method of water-proof layer of roof coating assembled by skynet plates at gutter - Google Patents
Construction method of water-proof layer of roof coating assembled by skynet plates at gutter Download PDFInfo
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- CN112681628A CN112681628A CN202011542364.4A CN202011542364A CN112681628A CN 112681628 A CN112681628 A CN 112681628A CN 202011542364 A CN202011542364 A CN 202011542364A CN 112681628 A CN112681628 A CN 112681628A
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Abstract
A construction method of a gutter-mounted roof coating waterproof layer of a skynet plate comprises the steps of pouring polymer mortar, pasting polyethylene polypropylene coiled materials, spraying a concrete interface agent, applying an additional waterproof layer, and laying a first waterproof layer, a second waterproof layer and a third waterproof layer, so that the waterproof effect of the gutter reaches the level I, wind uncovering resistance, dislocation resistance and ageing resistance can be effectively achieved, the steps are mutually linked, the construction mode of the conventional waterproof layer at the gutter-mounted roof is basically overturned, the overall load of the skynet plate roof is reduced, the construction method has obvious and outstanding characteristics, and the construction method can be popularized to the waterproof construction of other parts of the tiled roof, even the conventional building roof and the like.
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 gutter.
Background
For the assembled building, the fabrication of the gutter is generally to set up a groove skyline plate on one side of an outer wall plate, the other side of the groove skyline plate is connected with a roof plate, the left upper end of the groove skyline plate is provided with a water baffle plate, the right upper end of the groove skyline plate is provided with an aerated concrete block, and the waterproof construction process of the gutter is briefly described as follows by combining a figure 1:
1. pouring a concrete leveling layer 6: and continuously pouring fine stone concrete with certain thickness on the inner side surfaces of the roof panel 1, the aerated concrete block 3, the groove skynet 5, the water baffle 4 and the external wall panel 2 and trowelling the concrete.
2. Adhering an additional waterproof layer 7: and after the concrete leveling layer is solidified, fully adhering the polyvinyl chloride waterproof coiled material to the top of the external wall panel from the position, at a certain distance from the roof panel to the groove skynet panel, of the roof panel through the adhesive.
3. And (3) pasting a waterproof layer 8: and adhering a layer of polyvinyl chloride waterproof roll on the additional waterproof layer.
4. Smearing sealing paste 9: and sealing the end parts of the additional waterproof layer and the waterproof layer by sealing paste on the outer side of the outer wallboard.
5. The waterproof layer and the additional waterproof layer are nailed on the metal edge sealing 10 of the outer wallboard by self-tapping screws 11, and each self-tapping screw is additionally provided with a waterproof gasket.
6. The galvanized sheet steel 12 with one closed end is covered on the top end of the outer wallboard and comprises a waterproof layer and an additional waterproof layer, then the galvanized sheet steel is nailed on a concrete leveling layer through a cement nail 13, and the other side of the galvanized sheet steel is nailed on the metal sealing edge of the outer wallboard through a self-tapping screw.
7. After the above steps are completed, mortar or concrete with a certain thickness is poured on the surface of the polyvinyl chloride waterproof roll as the protective layer 20.
Although the construction has a certain waterproof effect, the following problems can be caused after a plurality of years:
1. wind-force can form wind-force swirl when great at the gutter lateral wall, and wind-force swirl can make the skynet board of whole roofing produce the trace and rock, and these are rocked and can lead to the fracture of coming unstuck between waterproofing membrane layer and the roofing, and waterproofing membrane will weld in seam crossing when laying, and especially 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 roof boarding split-mounting type roof coating at a gutter, which essentially overturns the construction mode of a conventional water-proof layer at the gutter by paving a polyethylene polypropylene coiled material, spraying a concrete interface agent, spraying a guniting coating, sticking a slurry dipping cloth and the like, improves the safety of split-mounting type buildings 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 gutter external wall panel and a groove ceiling panel is erected on one side of the gutter external wall panel, the groove ceiling panel is connected with the other side of the groove ceiling panel, a water baffle is arranged at the left upper end of the groove ceiling panel, and an aerated concrete block is arranged at the right upper end of the groove ceiling panel, the construction method uses an acrylic polymer cement waterproof coating, a polyester filament non-woven fabric, a polyethylene polypropylene fiber coiled material and a concrete interface agent, wherein the acrylic polymer cement waterproof coating is used for preparing a 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 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 of the waterproof layer at the gutter are as follows:
firstly, polymer mortar with the width not less than 50mm is laid on the tops of aerated concrete blocks and roof panels, then polyethylene polypropylene coiled materials with the width not less than 240mm are pasted on two polymer mortars and pressed to be compact, and the polyethylene polypropylene coiled materials are required to meet the requirement of 400g/m2；
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 concrete interface agent along the inner side, the top and the outer side of the roof panel, the aerated concrete block, the groove skynet, the water baffle and the outer wall panel;
thirdly, when the concrete interface agent coating is not sticky and does not influence spraying, uniformly spraying the guniting coating from the position of the roof board, which is about 300mm away from the groove skynet board, to the position of 250mm from the top of the water baffle board, and after the guniting coating is dried, sticking a slurry dipping cloth on the surface of the guniting coating to finish the construction of an additional waterproof layer, wherein the spraying thickness of the additional waterproof layer is controlled to be about 1.0 mm;
after the additional waterproof layer is dried, uniformly spraying guniting paint along the inner side surfaces, the top surfaces and the outer side surfaces of the roof board, the aerated concrete block, the groove skynet, the water baffle and the outer wall board, and after the guniting paint is dried, pasting the slurry dipping cloth on the surface of the guniting paint to form a first waterproof layer, wherein the spraying thickness of the first waterproof layer is controlled to be about 1.0 mm;
after the first waterproof layer is dried, spraying guniting paint uniformly on the surface of the first waterproof layer, after the guniting paint is dried, sticking a piece of slurry-soaking 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 second waterproof layer and the third waterproof layer to be about 1.5mm, so that the waterproof construction at the gutter of the assembled roof of the skynet board is completed;
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 comprises the steps of laying polyethylene polypropylene fiber coiled materials, spraying concrete interface agents, spraying gunite coatings, pasting slurry-soaked cloth and the like, all the steps are mutually connected and completed at one time, and the construction method has obvious outstanding characteristics and is an advanced construction technology which is not adopted at a gutter of a spliced roof of a skynet plate so far.
2. The construction method essentially overturns the construction mode of the conventional waterproof layer at the gutter of the spliced roof of the skyline panel, and the tensile strength and ultraviolet resistance indexes 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 panel roof is reduced, the wind uncovering resistance and the dislocation resistance of the skyline panel 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-roof boarding, 2-external wall boarding, 3-aerated concrete block, 4-water baffle, 5-groove skynet, 6-concrete leveling layer, 7-additional waterproof layer, 8-waterproof layer, 9-sealant, 10-metal edge banding, 11-self-tapping screw, 12-galvanized sheet steel, 13-cement nail, 14-polymer mortar, 15-polyethylene polypropylene fiber coiled material, 16-concrete interface agent, 17-additional waterproof layer, 18-first waterproof layer, 19-second and third waterproof layers, and 20-protective layer.
Detailed Description
The construction method of the waterproof layer of the roof coating spliced by the skynet boards at the gutter has obvious substantial characteristics, essentially reverses the construction mode of the conventional waterproof layer, lightens the integral load of the skynet board roof, improves the safety of spliced buildings, is an innovative technology worthy of large-area popularization, and particularly can be referred to all buildings at the gutter.
The construction method of the invention uses acrylic polymer cement waterproof paint, polyester filament non-woven fabric, polyethylene polypropylene coiled material and 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 both meet the use requirements of an 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%.
The construction method of the invention can be executed by referring to the technical scheme in each step, which is not described in detail, but the following steps are needed to be supplemented:
firstly, the polymer mortar is preferably paved at a height of about 10mm, or the polyethylene polypropylene coiled material can be pasted, the polymer mortar is used for raising and the polyethylene polypropylene coiled material is paved in an empty mode, so that a certain telescopic space is reserved in the joint position between the aerated concrete block and the roof panel of the waterproof layer, when the joint is dislocated or separated, the reserved telescopic space can effectively buffer the relative displacement of the joint, and the fracture limit of the waterproof layer is increased in a phase-changing mode.
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 fifthly, controlling the total thickness of the additional waterproof layer, the first waterproof layer, the second waterproof layer and the third waterproof layer to be about 3.5mm, and achieving the i-level waterproof effect according to the waterproof layer with the thickness of 2.5mm in related experiments.
The construction method of the invention can be applied to other parts of the assembled roof, even popularized to the waterproof construction of the conventional building roof, and the construction method can be carried out according to the manufacturing method of the waterproof layer in the steps II, III, and the like, and the positions of the joints, the reinforced waterproof layer and the like are increased, and the construction method of the invention does not need to construct a protective layer on the waterproof layer of the building roof, thereby greatly reducing the whole load of the building roof and improving the safety of the building.
The construction method of the invention forms a mutually connected complete construction technology through the technical scheme, the complete construction technology is mutually related and has no defects, the complete construction technology can not be separated and independently evaluated, 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. A construction method of a gutter external wall panel (2) with a groove space panel (5) erected on one side and connected with a roof panel (1) on the other side of the groove space panel, a water baffle (4) is arranged at the left upper end of the groove space panel, and an aerated concrete block (3) is arranged at the right upper end of the groove space panel, the construction method uses an acrylic polymer cement waterproof coating, a polyester filament non-woven fabric, a polyethylene polypropylene fiber coiled material and a concrete interface agent, wherein the acrylic polymer cement waterproof coating is used for preparing a guniting coating according to the reference proportion by weight: acrylic polymer cement waterproof paint and water in the ratio of 1 to 1; 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 of the waterproof layer at the gutter are as follows:
firstly, polymer mortar (14) with the width not less than 50mm is laid on the tops of aerated concrete blocks and roof panels, then polyethylene polypropylene coiled materials (15) with the width not less than 240mm are pasted on two polymer mortars and pressed tightly, and the polyethylene polypropylene coiled materials are required to meet the requirement of 400g/m2；
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 concrete interface agents (16) along the inner side surfaces, the top surfaces and the outer side surfaces of the roof panels, the aerated concrete blocks, the groove skywoods, the water baffles and the external wall panels;
thirdly, when the concrete interface agent coating is not sticky and does not influence spraying, uniformly spraying the guniting paint from the position of the roof board, which is about 300mm away from the groove skyscraper, to the position of 250mm from the top of the water baffle, and sticking a slurry dipping cloth on the surface of the guniting paint after the guniting paint is dried to finish construction of an additional waterproof layer (17), wherein the spraying thickness of the additional waterproof layer is controlled to be about 1.0 mm;
after the additional waterproof layer is dried, uniformly spraying guniting paint along the inner side surfaces, the top surfaces and the outer side surfaces of the roof board, the aerated concrete block, the groove skynet, the water baffle and the outer wall board, and after the guniting paint is dried, pasting the slurry dipping cloth on the surfaces of the guniting paint to form a first waterproof layer (18), wherein the spraying thickness of the first waterproof layer is controlled to be about 1.0 mm;
after the first waterproof layer is dried, spraying guniting paint uniformly on the surface of the first waterproof layer, after the guniting paint is dried, sticking a piece of slurry-soaking 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 (19) to be about 1.5mm, so that the waterproof construction of the roof gutter of the assembled roof of the skynet board is completed;
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 |
|---|---|---|---|
| CN202011542364.4A CN112681628A (en) | 2020-12-24 | 2020-12-24 | Construction method of water-proof layer of roof coating assembled by skynet plates at gutter |
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| CN202011542364.4A CN112681628A (en) | 2020-12-24 | 2020-12-24 | Construction method of water-proof layer of roof coating assembled by skynet plates at gutter |
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| CN112681628A true CN112681628A (en) | 2021-04-20 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210134592U (en) * | 2019-05-22 | 2020-03-10 | 杨成余 | Waterproof node structure of prefabricated roofing concrete slab roofing gutter |
| CN111911190A (en) * | 2020-09-11 | 2020-11-10 | 何峰 | Improved construction method for caulking shield tunnel segment |
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- 2020-12-24 CN CN202011542364.4A patent/CN112681628A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN210134592U (en) * | 2019-05-22 | 2020-03-10 | 杨成余 | Waterproof node structure of prefabricated roofing concrete slab roofing gutter |
| 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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