CN101587057A - Method for testing self-heat preserving system safety of building external wall - Google Patents
Method for testing self-heat preserving system safety of building external wall Download PDFInfo
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- CN101587057A CN101587057A CNA2009100531584A CN200910053158A CN101587057A CN 101587057 A CN101587057 A CN 101587057A CN A2009100531584 A CNA2009100531584 A CN A2009100531584A CN 200910053158 A CN200910053158 A CN 200910053158A CN 101587057 A CN101587057 A CN 101587057A
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Abstract
The invention discloses a method for testing self-heat preserving system safety of building external wall, which includes the steps: installing weather box for test in laboratory, keeping the laboratory temperature at 10 DEG C to 20DEG C, and the relative humidity is less than 50%; regulating and controlling the parameter of weather box, and setting the weather resistant experiment hot rain circle index as 300 times; regulating and controlling the weather box parameter, setting hot-rain circle and hot-cold circle transition experiment at constant temperature 20 DEG C, keeping the hold time as 48 hours; regulating and controlling the weather box parameter, and setting the weather resistant experiment hot-cold circle index as 100 times; building self-heat preserving sample wall on the sample wall stand; maintaining the self-heat preserving sample wall for 10 days at least; pushing the maintained self-heat preserving sample wall to the double sides of the weather box, and then carrying out the weather box; after the weather resistant experiment is finished, pushing the sample wall away from the double sides of the weather box, and the integrally observing the sample wall as well as the characteristic or change in characteristic of plastering mortar.
Description
Technical field
The present invention relates to the building thermal technique technical field of performance test, relate in particular to a kind of self-heat preserving system safety of building external wall performance test methods.
Background technology
The exterior wall self-insulation system is realized the heat preservation energy-saving requirement of exterior wall by the insulation blocks that adopts high thermal resistance.Because it is simple in structure, cheap that self-insulation system has, easy construction etc. a bit occupy a tiny space in building energy conservation heat insulation market in recent years gradually.Along with progressively applying of self-insulation system, the security of system is the problem that must consider.
And present stage the domestic self-heat preserving system safety detection method that still lacks.Existing national standard " Test methods for the small concrete hollow block " (GB4111-1997), " lightweight small size hollow concrete blocks " (GB15229-1994) (GB11968-1997) made regulation to the insulation blocks performance that is used for self-insulation system with " autoclave aerated concrete building block ", do not have the regulation at total system.And " hot summer and warm winter region energy Saving Design of Residential Buildings standard " (JGJ75-2003) and " public building energy-saving design standard " (GB50189-2005) only relate to the security that requirements of saving energy does not relate to system." external wall outer insulation engineering rules " (JGJ144-2004; J408-2005) only contain the outer heat preservation system security and detect, do not have the index of self-heat preserving system safety.
The security of exterior wall heat-preserving system detect main under laboratory environment the simulating reality external environment condition to the influence of system.Existing external thermal insulation system standard is tested by weatherability, and Wind-Pressure Resistance experiment and mechanical property experiment detect the security of heat-insulation system.The request for utilization year of external thermal insulation system is limited to 25 years, and self-insulation system and foundation wall are integrated, and its tenure of use must be identical tenure of use with building, is 50 years.China's Xia Redong cryogenic region has specific weather conditions, and domestic existing heat insulation system safety standards is mainly used for reference European same class standard, its experimental technique is is mainly studied and defined by Fraunhofer Architecural Physics research institute, the weather conditions of reference meet the feature in area, middle West Europe (being mainly Germany), therefore also do not form in China to adapt to the exterior wall method for testing self-heat preserving system safety that China Xia Redong cryogenic region has specific weather conditions.
Summary of the invention
The exterior wall self-heat preserving system safety property testing evaluation method that the purpose of this invention is to provide a kind of suitable Xia Redong cryogenic region geographical environment within Chinese territory and weather conditions.
Technical scheme of the present invention is that a kind of method for testing self-heat preserving system safety of building external wall is characterized in that, may further comprise the steps:
The weather-proof case of installation testing in the laboratory keeps this laboratory temperature at 10 ℃ to 25 ℃, and relative humidity is not less than 50%;
Regulate and control described parameter of weather box, it is 300 times that weather resistant experiment hot rain circle index is set;
Regulate and control described parameter of weather box, hot rain circulation is set is permanent steady 20 ℃ with hot cold round-robin transition experiment, the retention time is 48 hours;
Regulate and control described parameter of weather box, it is 10 times that the weather resistant experiment hot-cold cycle index is set;
On the sample wall bracket, build self-heat preserving sample wall by laying bricks or stones;
The maintenance 10 days at least of described self-heat preserving sample wall;
The self-heat preserving sample wall that maintenance is finished is pushed into described weather-proof case both sides to be close to, and carries out described weather resistant experiment;
After described weather resistant experiment is finished, described sample wall is pushed open from described weather-proof case both sides, the characteristic or the performance change of described sample wall of whole observation and finishing mucilage, this variation comprises: bubble, peel off, lose bonding force, cracking between surface detail crack, layers of material.
Described weather-proof case is of a size of 4.00 meters * 2.60 meters * 1.80 meters.
Described weather-proof case carries temperature control device, and temperature regulating range-20 is ℃ to 80 ℃.
Described weather-proof case carries dehumidifier, humidity regulation scope 0% to 100%.
Described weather-proof case carries water tank and sparge pipe, 15 ℃ of water tank water temperature constant temperature.
Described weather-proof case both sides all have high 2.10 meters, and wide 3.10 meters opening is used to install described sample wall.
The dimensional requirement of described sample wall is 2.10 meters * 3.10 meters.
In the described weather resistant experiment, described hot rain round-robin concrete steps are:
A1 is heated to 70 ℃ with described weather-proof case with heating-up time of 30 minutes, and keeps 70 ℃ ± 5 ℃ of temperature and relative humidity 40%, and the time is 60 minutes;
A2 sprayed water 30 minutes, and water temperature is 15 ℃ ± 5 ℃, and injection flow rate is 1.0 liters/square metre minutes～1.5 liters/square metre minutes;
A3 left standstill 1 hour.
In the described weatherability experiment, the cold round-robin concrete steps of described heat are:
B1 kept 48 hours for permanent steady 20 ℃ ± 5 ℃ in described hot rain circulation back;
B2 was heated to 50 ℃ with described weather-proof case with 60 minute heating-up time, was 50 ℃ ± 5 ℃ in temperature, and relative humidity is not more than under 10% the condition and placed 420 minutes;
B3 is cooled to-20 ℃ with described weather-proof case with 120 minutes temperature fall times, in temperature is to place 840 minutes under-20 ℃ ± 5 ℃ the condition.
Technical scheme of the present invention is used for reference the experimental technique that security of system is studied in outer insulation, improves on its basis.In experiment, strengthened the aging intensity of simulation, adapted to China's Xia Redong cryogenic region and had specific weather conditions.
The invention has the beneficial effects as follows, form and determined comparatively objective exterior wall method for testing self-heat preserving system safety at China Xia Redong cryogenic region.
Description of drawings
Fig. 1 is the proving installation synoptic diagram of the required component construction of method of testing that provides according to technical solution of the present invention
Embodiment
The specific embodiment of the present invention is as follows, and unit rice is represented with m here, minute represents with min, and L represents to rise m
2Expression square metre, * represents *, h represents hour.
The weather-proof casing of installation test in the laboratory at first, keep laboratory temperature at 10 ℃ to 25 ℃, relative humidity is not less than 50%, the regulation and control parameter of weather box, it is 300 times that weather resistant experiment hot rain circle index is set, the regulation and control parameter of weather box, hot rain is set and hot cold round-robin transition experiment is 20 ℃ of constant temperature, keep 48h, the regulation and control parameter of weather box, it is 10 times that the weather resistant experiment hot-cold cycle index is set.
Build self-heat preserving sample wall by laying bricks or stones on the sample wall bracket, sample needs maintenance at least 10 days, after maintenance is finished the sample wall is pushed into weather-proof case both sides and is close to, and carries out weather resistant experiment.
After weather resistant experiment is finished, the sample wall is pushed open from the casing both sides, observed the characteristic or the performance change (bubble, peel off, bonding force is lost in the surface detail crack between layers of material, cracking or the like) of total system and finishing mucilage.
Requirement in test, described weather-proof case is of a size of 4.00m*2.60m*1.80m.Described weather-proof case carries temperature control system, and temperature regulating range-20 is ℃ to 80 ℃.Described weather-proof case carries dehumidification system, humidity regulation scope 0% to 100%.Described weather-proof case carries water tank and spray equipment, 15 ℃ of water tank water temperature constant temperature.All there is high 2.10m described weather-proof case both sides, and the opening of wide 3.10m is used to install the sample wall.The dimensional requirement of described sample wall is 2.10m*3.10m.
In the described weatherability experiment, hot rain round-robin concrete steps are:
1) casing is heated to 70 ℃ (30min heating-up times), keeps 70 ℃ ± 5 ℃ of temperature, relative humidity 40% (keeping 60min);
2) water spray 30min, 15 ℃ ± 5 ℃ of water temperatures, injection flow rate 1.0L/m
2Min～1.5L/m
2Min;
3) leave standstill 1h.
In the described weatherability experiment, hot cold round-robin concrete steps are:
Keep 48h for permanent steady 20 ℃ ± 5 ℃ in hot rain experiment back;
1) casing being heated to 50 ℃ (60min heating-up times), is 50 ℃ ± 5 ℃ in temperature, and relative humidity is not more than under 10% the condition and places 420min;
2) casing being cooled to-20 ℃ (temperature fall time is 120min), is to place 840min under-20 ℃ ± 5 ℃ the condition in temperature.
According to such scheme, can make up experimental provision as shown in Figure 1.Whole experiment device is by weather-proof case, and temperature control device comprises heating unit and refrigeration unit, dehumidifier, and sample wall left socle and right support, constant temperature water tank and control desk are formed.
Wherein heating and the refrigeration unit temperature variation that is used to regulate casing, water tank and utility appliance thereof are used to simulate the spray process, and dehumidifier is used to regulate the humidity of casing.All experimental periods, the cyclic test process was promptly finished in start automatically after the control desk place is provided with.
Wherein the humiture of weather-proof case changes by the temperature and humidity sensor monitoring that is distributed in central upper in the casing, and its precision is respectively ± 0.1 ℃ and ± 2 ~ 3% (relative humidity).
The opening of wherein weather-proof case both sides needs to conform to sample wall size, need make encapsulation process in addition in addition.
Claims (9)
1, a kind of method for testing self-heat preserving system safety of building external wall is characterized in that, may further comprise the steps:
The weather-proof case of installation testing in the laboratory keeps this laboratory temperature at 10 ℃ to 25 ℃, and relative humidity is not less than 50%;
Regulate and control described parameter of weather box, it is 300 times that weather resistant experiment hot rain circle index is set;
Regulate and control described parameter of weather box, hot rain circulation is set is permanent steady 20 ℃ with hot cold round-robin transition experiment, the retention time is 48 hours;
Regulate and control described parameter of weather box, it is 10 times that the weather resistant experiment hot-cold cycle index is set;
On the sample wall bracket, build self-heat preserving sample wall by laying bricks or stones;
The maintenance 10 days at least of described self-heat preserving sample wall;
The self-heat preserving sample wall that maintenance is finished is pushed into described weather-proof case both sides to be close to, and carries out described weather resistant experiment;
After described weather resistant experiment is finished, described sample wall is pushed open from described weather-proof case both sides, the characteristic or the performance change of described sample wall of whole observation and finishing mucilage, this variation comprises: bubble, peel off, lose bonding force, cracking between surface detail crack, layers of material.
2, method for testing self-heat preserving system safety of building external wall according to claim 1 is characterized in that described weather-proof case is of a size of 4.00 meters * 2.60 meters * 1.80 meters.
3, method for testing self-heat preserving system safety of building external wall according to claim 1 is characterized in that described weather-proof case carries temperature control device, and temperature regulating range-20 is ℃ to 80 ℃.
4, method for testing self-heat preserving system safety of building external wall according to claim 1 is characterized in that described weather-proof case carries dehumidifier, humidity regulation scope 0% to 100%.
5, method for testing self-heat preserving system safety of building external wall according to claim 1 is characterized in that described weather-proof case carries water tank and sparge pipe, 15 ℃ of water tank water temperature constant temperature.
6, method for testing self-heat preserving system safety of building external wall according to claim 1 is characterized in that described weather-proof case both sides all have high 2.10 meters, and wide 3.10 meters opening is used to install described sample wall.
7, the method for testing of self-heat preserving system safety of building external wall according to claim 1 is characterized in that the dimensional requirement of described sample wall is 2.10 meters * 3.10 meters.
8, method for testing self-heat preserving system safety of building external wall according to claim 1 is characterized in that in the described weather resistant experiment, described hot rain round-robin concrete steps are:
A1 is heated to 70 ℃ with described weather-proof case with heating-up time of 30 minutes, and keeps 70 ℃ ± 5 ℃ of temperature and relative humidity 40%, and the time is 60 minutes;
A2 sprayed water 30 minutes, and water temperature is 15 ℃ ± 5 ℃, and injection flow rate is 1.0 liters/square metre minutes～1.5 liters/square metre minutes;
A3 left standstill 1 hour.
9, method for testing self-heat preserving system safety of building external wall according to claim 1 is characterized in that, in the described weatherability experiment, the cold round-robin concrete steps of described heat are:
B1 kept 48 hours for permanent steady 20 ℃ ± 5 ℃ in described hot rain circulation back;
B2 was heated to 50 ℃ with described weather-proof case with 60 minute heating-up time, was 50 ℃ ± 5 ℃ in temperature, and relative humidity is not more than under 10% the condition and placed 420 minutes;
B3 is cooled to-20 ℃ with described weather-proof case with 120 minutes temperature fall times, in temperature is to place 840 minutes under-20 ℃ ± 5 ℃ the condition.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147352A (en) * | 2010-12-29 | 2011-08-10 | 常州亿晶光电科技有限公司 | Synchronous clamping assembly test stand for two-sided ultraviolet ageing test |
| CN102621054A (en) * | 2012-01-11 | 2012-08-01 | 泰安市路达公路仪器制造有限公司 | Rock aggregate firmness test box |
| CN103439357A (en) * | 2013-08-20 | 2013-12-11 | 上海市建筑科学研究院 | Method for testing moisture-heat transfer performance of exterior wall and dedicated climate simulation test chamber therefor |
| CN106767474A (en) * | 2016-11-15 | 2017-05-31 | 嘉兴学院 | Contactless external thermal insulation system overcoat thermal deformation analyzer and assay method |
| CN107631978A (en) * | 2017-09-08 | 2018-01-26 | 上海市建筑科学研究院 | A kind of cladding durability test method for simulating true climatic environment simulation |
| CN111487281A (en) * | 2020-03-25 | 2020-08-04 | 王文洋 | Safety testing method for external thermal insulation system of building external wall |
-
2009
- 2009-06-16 CN CNA2009100531584A patent/CN101587057A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147352A (en) * | 2010-12-29 | 2011-08-10 | 常州亿晶光电科技有限公司 | Synchronous clamping assembly test stand for two-sided ultraviolet ageing test |
| CN102147352B (en) * | 2010-12-29 | 2013-11-27 | 常州亿晶光电科技有限公司 | Synchronous clamping assembly test stand for two-sided ultraviolet ageing test |
| CN102621054A (en) * | 2012-01-11 | 2012-08-01 | 泰安市路达公路仪器制造有限公司 | Rock aggregate firmness test box |
| CN103439357A (en) * | 2013-08-20 | 2013-12-11 | 上海市建筑科学研究院 | Method for testing moisture-heat transfer performance of exterior wall and dedicated climate simulation test chamber therefor |
| CN106767474A (en) * | 2016-11-15 | 2017-05-31 | 嘉兴学院 | Contactless external thermal insulation system overcoat thermal deformation analyzer and assay method |
| CN107631978A (en) * | 2017-09-08 | 2018-01-26 | 上海市建筑科学研究院 | A kind of cladding durability test method for simulating true climatic environment simulation |
| CN107631978B (en) * | 2017-09-08 | 2020-01-14 | 上海市建筑科学研究院 | Method for testing durability of enclosure material by simulating real climate environment characteristics |
| CN111487281A (en) * | 2020-03-25 | 2020-08-04 | 王文洋 | Safety testing method for external thermal insulation system of building external wall |
| CN111487281B (en) * | 2020-03-25 | 2022-11-18 | 江苏润鑫节能科技发展有限公司 | Safety testing method for external thermal insulation system of building external wall |
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Application publication date: 20091125 |