CN109211483B - Method for detecting static wind pressure waterproof performance of combined external wall panel - Google Patents
Method for detecting static wind pressure waterproof performance of combined external wall panel Download PDFInfo
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- CN109211483B CN109211483B CN201810965760.4A CN201810965760A CN109211483B CN 109211483 B CN109211483 B CN 109211483B CN 201810965760 A CN201810965760 A CN 201810965760A CN 109211483 B CN109211483 B CN 109211483B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/78—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a change of colour
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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Abstract
The invention discloses a method for detecting the static wind pressure waterproof performance of a combined external wall panel, which comprises the following steps: (1) mounting the combined external wall panel test piece on a supporting box body to form a closed space, and arranging a humidity sensor in a drainage channel; (2) spraying a phenolphthalein reagent on the inner surface of the test piece, and directly spraying sodium bicarbonate dilute solution on the outer surface of the test piece; (3) stopping spraying, standing for more than 24 hours. Observing whether a phenolphthalein reagent turns red or not in the spraying process and the standing process; (4) heating the closed space; (5) pumping air into the internal space of the supporting box body to form negative pressure, spraying water on the outer surface of the combined external wall panel test piece again, and observing whether the inner surface of the test piece is discolored or not in the spraying process; (6) after the detection is finished, the inner surface of the test piece is monitored in real time by the infrared thermal imager arranged in the supporting box, and the obvious temperature difference indicates that water seepage exists in the area. The test method has the advantages of convenient detection and accurate detection result.
Description
Technical Field
The invention relates to a detection method, in particular to a detection method for waterproof performance of a combined external wall panel under the action of static wind pressure.
Background
At present, building industrialization is greatly promoted in China, and one important concept is that industrialized prefabrication production of building components such as columns, beams, walls, plates, roofs, integral toilets, integral kitchens and the like is realized by using a modern industrial production technology to form building parts, so that the building parts can be transported to a building construction site to carry out building block building type simple assembly and installation to complete construction.
The combined external wall panel is usually two or more combinations of common walls, doors and windows, heat-insulating layers, waterproof layers and the like, and has the functions of the components, such as structure, heat insulation, sound insulation, lighting, water resistance and the like. When the combined external wall panel is used, the combined external wall panel fittings are quickly installed between floors to form an external wall surface between the floors, so that the aim of accelerating the building speed can be fulfilled. At present, no related method for detecting the waterproof performance of the combined external wall panel exists.
Disclosure of Invention
The invention aims to provide a method for detecting the static wind pressure waterproof performance of a combined external wall panel, which can confirm whether the combined external wall panel can meet the waterproof requirement or not before being installed between floors after the combined external wall panel accessory is produced, aiming at the current situation of a temporary combined external wall panel waterproof detection method.
The technical scheme adopted by the invention is as follows:
a method for detecting the static wind pressure waterproof performance of a combined external wall panel is characterized by comprising the following detection steps:
(1) mounting a combined external wallboard test piece on a supporting box body to form a complete closed space between the supporting box body and the test piece, wherein the outdoor side of the test piece faces outwards, and a humidity sensor is arranged in a drainage channel prefabricated by the external wallboard test piece;
(2) spraying a phenolphthalein reagent with the concentration of 1% on the inner surface of the combined external wall panel test piece, and directly spraying water on the outer surface of the combined external wall panel test piece, wherein the spraying time is 5-50 minutes, and the spraying water is a dilute sodium bicarbonate solution with the concentration of 5% or higher;
(3) stopping spraying, standing for 24 hours. Observing whether the phenolphthalein reagent turns red or not in the spraying process and the standing process, and determining whether water seepage exists or not;
(4) heating the closed space until the temperature difference between the outer surface of the combined external wall panel test piece and the environment temperature is more than 5 ℃;
(5) forming negative pressure by pumping air into the internal space of the supporting box body, wherein the negative pressure is set according to an engineering design value or a consignor; spraying water on the outer surface of the combined external wall panel test piece again, observing whether the inner surface of the combined external wall panel test piece is discolored or not in the spraying process, and if the color is changed, indicating that the test piece is seeped; meanwhile, the condition of the humidity sensor is checked, and whether the drainage flows out according to a designed channel is judged;
(6) after the detection is finished, the inner surface of the test piece is monitored in real time by using an infrared thermal imager arranged in the supporting box, and the obvious temperature difference indicates that water seepage exists in the area.
The invention has the following beneficial effects:
the invention adopts a method for detecting the waterproof performance of the combined external wall panel by simulating wind pressure through static pressure difference and simulating precipitation through outdoor side spraying, and simultaneously adopts a phenolphthalein color change method, a humidity sensor method and an infrared thermal imaging method to detect water seepage, thereby filling the blank in the field. The test method has the advantages of accurate detection result, high reliability, good repeatability and the like.
Detailed Description
The invention will be further illustrated with reference to specific examples:
example 1:
the design and process verification experiment before large-scale production of certain fabricated building external wall panel:
(1) and (3) mounting the 2 external wall panel test pieces on the supporting box body, wherein the outdoor side of the external wall panel test pieces faces the outside of the box body. The upper and lower of 2 external wall panels are fixed unanimously with the engineering, and sealed unanimous with the engineering between two external wall panels, and install humidity transducer in the drainage channel between two external wall panels. Sealing a gap between the test piece and the box body by using an aluminum-plastic plate to form a complete closed space between the supporting box body and the test piece;
(2) spraying a phenolphthalein reagent with the concentration of 1% (keeping the wall surface moist in the subsequent observation process and supplementing in time after drying) on the inner surface of the combined external wall panel test piece, and directly spraying 5% concentration spray water (sodium bicarbonate dilute solution) on the outer surface for 5 minutes; the indoor side phenolphthalein reagent is not discolored;
(3) stopping spraying, standing for 24 hours. The observation is carried out every 1 hour interval during the period, and the phenolphthalein reagent is sprayed additionally without changing the color.
(4) Continuously heating the closed space by adopting an electric heater until the temperature difference between the surface of the combined external wall panel test piece and the environment temperature is 5 ℃;
(5) pumping air into the internal space of the supporting box body to form a negative pressure of 1000Pa (engineering design requirement), spraying water on the outer surface of the combined external wall panel test piece again, and observing by naked eyes in the spraying process to ensure that the inner surface of the combined external wall panel test piece is not discolored; in the designed drainage channel, moisture is sequentially detected by a humidity sensor;
(6) after the detection is finished, the inner surface of the test piece is monitored in real time by an infrared thermal imager arranged in the supporting box, and the temperature difference exists at the aluminum section bar part of the window frame part, so that the thermal bridge effect of the aluminum section bar is judged. No obvious temperature difference appears at other parts, and the test piece has no water seepage.
Example 2:
the design and process verification experiment before large-scale production of certain fabricated building external wall panel:
(1) and (3) mounting the 2 external wall panel test pieces on the supporting box body, wherein the outdoor side of the external wall panel test pieces faces the outside of the box body. The upper and lower of 2 external wall panels are fixed unanimously with the engineering, and sealed unanimous with the engineering between two external wall panels, and install humidity transducer in the drainage channel between two external wall panels. Sealing a gap between the test piece and the box body by using an aluminum-plastic plate to form a complete closed space between the supporting box body and the test piece;
(2) spraying a phenolphthalein reagent with the concentration of 1% on the inner surface of the combined external wall panel test piece, and directly spraying 5% spraying water (sodium bicarbonate dilute solution) on the outer surface for 30 minutes; the indoor side phenolphthalein reagent is not discolored;
(3) stopping spraying, standing for 30 hours. During this period, the observation was carried out at intervals of 1 hour, and the phenolphthalein reagent was additionally sprayed, and a red color appeared locally. And feeding back to a design side, and checking local casting defects.
(4) Continuously heating the closed space by adopting an electric heater until the temperature difference between the surface of the combined external wall panel test piece and the environment temperature is 7 ℃;
(5) pumping air into the internal space of the supporting box body to form 800Pa negative pressure (engineering design requirement), spraying water on the outer surface of the combined external wall panel test piece again, and observing by naked eyes in the spraying process, wherein the inner surface of the combined external wall panel test piece is not discolored; in the designed drainage channel, moisture is sequentially detected by a humidity sensor;
(6) after the detection is finished, the inner surface of the test piece is monitored in real time by an infrared thermal imager arranged in the supporting box, and the lower opening part of the joint between the aluminum profile at the window frame part and the concrete wall surface has temperature difference and is judged to have accumulated water. And the consignor agrees to break and dismantle the area, and the pouring quality of the area is not high and local cracks exist.
Other undescribed portions of the present invention are the same as the prior art.
Claims (3)
1. A method for detecting the static wind pressure waterproof performance of a combined external wall panel is characterized by comprising the following detection steps:
(1) mounting the combined external wall panel test piece on a supporting box body to form a complete closed space between the supporting box body and the combined external wall panel test piece, enabling the outdoor side of the combined external wall panel test piece to face outwards, and arranging a humidity sensor in a drainage channel prefabricated by the combined external wall panel test piece;
(2) spraying a phenolphthalein reagent on the inner surface of the combined external wall panel test piece, and directly spraying spray water on the outer surface of the combined external wall panel test piece for 30 minutes, wherein the spray water is a dilute sodium bicarbonate solution with the concentration of 5% or higher;
(3) standing for more than 24 hours after stopping spraying, observing whether the phenolphthalein reagent turns red in the spraying process and the standing process, and determining whether water seepage exists;
(4) heating the closed space until the temperature difference between the outer surface of the combined external wall panel test piece and the environment temperature is more than 5 ℃;
(5) pumping air into the internal space of the supporting box body to form negative pressure, spraying water on the outer surface of the combined external wall panel test piece again, observing whether the inner surface of the combined external wall panel test piece is discolored or not in the spraying process, and if discolored, indicating that the combined external wall panel test piece is seeped; meanwhile, the condition of the humidity sensor is checked, and whether the drainage flows out according to a designed channel is judged;
(6) after the detection is finished, the inner surface of the combined external wall panel test piece is monitored in real time by an infrared thermal imager arranged in the supporting box, and the area with the obvious temperature difference is a water seepage area.
2. The method for detecting the static wind pressure waterproof performance of the combined external wall panel as claimed in claim 1, wherein the method comprises the following steps: the concentration of the sodium bicarbonate dilute solution used in the step (2) is 5 percent.
3. The method for detecting the static wind pressure waterproof performance of the combined external wall panel as claimed in claim 1, wherein the method comprises the following steps: the concentration of the phenolphthalein reagent in the step (2) is 1%.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810965760.4A CN109211483B (en) | 2018-08-23 | 2018-08-23 | Method for detecting static wind pressure waterproof performance of combined external wall panel |
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| CN201810965760.4A CN109211483B (en) | 2018-08-23 | 2018-08-23 | Method for detecting static wind pressure waterproof performance of combined external wall panel |
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| CN109211483A CN109211483A (en) | 2019-01-15 |
| CN109211483B true CN109211483B (en) | 2020-11-20 |
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| CN112665806A (en) * | 2021-01-19 | 2021-04-16 | 安徽省（水利部淮河水利委员会）水利科学研究院 | Assembled building outer wall leakage detection device and using method |
| CN114689246B (en) * | 2022-03-23 | 2023-11-14 | 江苏希尔登家居有限公司 | Curtain wall door and window airtight performance evaluation method and system based on machine vision |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1117269C (en) * | 2000-01-28 | 2003-08-06 | 中国建筑科学研究院建筑物理研究所 | Equipment for in situ testing dynamic wind pressure property of building door and window |
| CN201540189U (en) * | 2009-11-24 | 2010-08-04 | 河南省基本建设工程质量检测站 | Intelligent detection equipment for civil-defence-engineering sealed door |
| CN104677576A (en) * | 2015-02-09 | 2015-06-03 | 中国计量学院 | Infrared thermal imaging low-temperature economizer leakage detection device |
| CN106323565A (en) * | 2016-08-09 | 2017-01-11 | 淄博荣琦自动化科技有限公司 | Rubber glove leak detection device and detection method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103575475A (en) * | 2012-08-09 | 2014-02-12 | 北汽福田汽车股份有限公司 | Vehicle sealing performance detecting device and method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1117269C (en) * | 2000-01-28 | 2003-08-06 | 中国建筑科学研究院建筑物理研究所 | Equipment for in situ testing dynamic wind pressure property of building door and window |
| CN201540189U (en) * | 2009-11-24 | 2010-08-04 | 河南省基本建设工程质量检测站 | Intelligent detection equipment for civil-defence-engineering sealed door |
| CN104677576A (en) * | 2015-02-09 | 2015-06-03 | 中国计量学院 | Infrared thermal imaging low-temperature economizer leakage detection device |
| CN106323565A (en) * | 2016-08-09 | 2017-01-11 | 淄博荣琦自动化科技有限公司 | Rubber glove leak detection device and detection method |
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