DE3616220A1 - Method of non-destructively locating cavities and moisture in cavities in and under coverings and seals on bridges - Google Patents
Method of non-destructively locating cavities and moisture in cavities in and under coverings and seals on bridgesInfo
- Publication number
- DE3616220A1 DE3616220A1 DE19863616220 DE3616220A DE3616220A1 DE 3616220 A1 DE3616220 A1 DE 3616220A1 DE 19863616220 DE19863616220 DE 19863616220 DE 3616220 A DE3616220 A DE 3616220A DE 3616220 A1 DE3616220 A1 DE 3616220A1
- Authority
- DE
- Germany
- Prior art keywords
- cavities
- bridges
- destructively
- covering
- locating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- 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
- G01N25/72—Investigating presence of flaws
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Description
Das erfindungsgemäße Verfahren ermöglicht es, Hohlräume in und unter den Fahrbahndecken, Schutzschichten und Abdichtun gen auf Brücken aufzuspüren und nachzuweisen, ob diese Hohlräume Wasser beinhalten. Das erfindungsgemäße Verfahren ermöglicht es, diese, die Lebensdauer eines Brückenbelages und der Abdichtung beeinträchtigenden Hohlräume, in jedem gewünschten Abschnitt ihrer Liegezeit zu erkennen, ohne in die genannten Schichten zerstörend einzugreifen.The method according to the invention enables cavities in and under the pavement, protective layers and waterproofing traces on bridges and prove whether these Cavities contain water. The method according to the invention enables this, the lifespan of a bridge covering and sealing cavities, in each to recognize the desired section of your lay time without in intervene destructively.
Die Hohlräume unterhalb der Abdichtung entstehen fast aus schließlich durch eingeschlossene Feuchtigkeit in den Poren des Betons bei der Herstellung der Abdichtung. Die spätere Hohlstelle ist zunächst nicht erkennbar. Durch den Einbau der Asphaltschutzschicht mit Einbautemperaturen von bis zu 250°C wird das eingeschlossene Wasser erhitzt, es kommt zur Verdampfung und mit der damit verbundenen Volumenver größerung zur Hohlraumbildung. Nach dem Erkalten des Asphaltbelages ist dann die Schwächung des Belages an dieser Stelle mit dem Hohlraum vorhanden, der die Keimzelle für die weitere Volumenvergrößerung im Wechsel der Tempe raturen zwichen Tag und Nacht, Sommer und Winter bildet.The voids underneath the seal almost emerge finally due to trapped moisture in the pores of the concrete in the manufacture of the waterproofing. The later one Cavity is initially not recognizable. By installation the asphalt protection layer with installation temperatures of up to The enclosed water is heated to 250 ° C, it comes for evaporation and with the associated volume enlargement to form cavities. After cooling the Asphalt pavement is then the weakening of the pavement this point with the cavity present that is the germ cell for the further increase in volume by changing the tempe temperature between day and night, summer and winter.
Es gibt seither keine Möglichkeit, solche Hohlräume in die sem frühen Stadium zu erkennen. Sie sind ohne das erfin dungsgemäße Verfahren erst erkennbar, wenn sie sich durch Aufwölbung des Belages abzeichnen. Zu diesem Zeitpunkt aber, an dem sich die Hohlstelle an der Belagsoberfläche bereits abzeichnet, ist die Schwächung des Belages soweit fortge schritten, daß eine erfolgsversprechende Sanierung nicht mehr möglich ist. Der gesamte Belag einschließlich der Ab dichtung muß dann erneuert werden.Since then, there has been no way to find such cavities in the early stage. You are without the invention The process according to the invention can only be recognized when it is clear Mark the bulge of the covering. At this point, where the hollow is already on the surface of the covering signs, the weakening of the covering has continued so far steps that a promising renovation does not is more possible. The entire surface including the Ab The seal must then be replaced.
Das erfindungsgemäße Verfahren soll es ermöglichen, diese Hohlräume (in der Fachsprache auch Blasen und Kavernen ge nannt) sofort zu erkennen und diese als Ausführungsmangel festzustellen, da der Unternehmer eine blasenfreie Abdich tung und einen kavernenfreien Belag herstellen muß. Dieser Mangel kann mit dem erfindungsgemäßen Verfahren festgestellt werden, unabhängig davon, ob der Hohlraum bereits mit Was ser gefüllt ist oder nicht.The method according to the invention should make it possible Cavities (in technical terminology also bubbles and caverns immediately recognized and this as a lack of execution Ascertain as the entrepreneur has a bubble-free seal tion and a cavern-free covering must. This Defects can be determined using the method according to the invention regardless of whether the cavity is already covered with what it is filled or not.
Die Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Belag thermographisch (z. B. mit einer Infrarotkamera oder einem Thermovisionsgerät mit angekoppelter Kamera wie sie im Handel frei erhältlich sind) untersucht wird. Dies ge schieht derart, daß zunächst eine sog. Bezugsuntersuchung des Belages, die ein Bezugsbild liefert, durchgeführt wird. Durch Erwärmung des Belages, die entweder durch Sonnenein strahlung und zur Feststellung von Hohlräumen im Belag ohne Wasserinhalt ausreicht oder mit Mikrowellen die ausschließlich das Wasser in den Hohlräumen anwärmen, kön nen diese Hohlräume mit einer unmittelbar nachfolgenden thermographischen Untersuchung sichtbar gemacht werden. Durch die Überlagerung der Bilder aus der ersten thermo graphischen Untersuchung mit den Bildern nach der Wärme- oder Mikrowellenbestrahlung können vorhandene Hohlräume nachgewiesen werden.The object is achieved in that the Covering thermographically (e.g. with an infrared camera or a thermovision device with a connected camera like her are commercially available) is examined. This ge happens in such a way that first a so-called reference examination of the covering, which provides a reference picture, is carried out. By heating the surface, either by sunshine radiation and for the detection of voids in the covering sufficient without water content or with microwaves can only heat the water in the cavities these cavities with an immediately following one thermographic examination can be made visible. By overlaying the images from the first thermo graphic examination with the pictures after the heat or microwave radiation can create existing cavities be detected.
Die mit dem erfindungsgemäßen Verfahren erzielbaren Vor teile liegen darin, daß die die Lebensdauer der Brücken beläge beeinträchtigenden Hohlräume jederzeit aufspürbar sind und damit rechtzeitig beseitigt werden können.The achievable with the inventive method Parts are that the lifespan of the bridges cavities affecting deposits can be detected at any time are and can be eliminated in time.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863616220 DE3616220A1 (en) | 1986-05-14 | 1986-05-14 | Method of non-destructively locating cavities and moisture in cavities in and under coverings and seals on bridges |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19863616220 DE3616220A1 (en) | 1986-05-14 | 1986-05-14 | Method of non-destructively locating cavities and moisture in cavities in and under coverings and seals on bridges |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3616220A1 true DE3616220A1 (en) | 1987-11-19 |
Family
ID=6300809
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19863616220 Withdrawn DE3616220A1 (en) | 1986-05-14 | 1986-05-14 | Method of non-destructively locating cavities and moisture in cavities in and under coverings and seals on bridges |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3616220A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0567078A2 (en) * | 1992-04-20 | 1993-10-27 | Kawasaki Jukogyo Kabushiki Kaisha | Method of and system for detecting moisture in honeycomb panel |
WO1998005948A1 (en) * | 1996-07-31 | 1998-02-12 | Siemens Aktiengesellschaft | Method and device for examining the inner cooling structure of a turbine blade, in particular of stationary gas turbines |
DE10053112A1 (en) * | 2000-10-26 | 2002-05-16 | Bosch Gmbh Robert | Non-destructive thermographic testing device for detection of delamination, cracks or material defects in the surfaces of electrically conducting test pieces using a microwave source to provide inductive heating |
EP1455180A1 (en) * | 2003-03-04 | 2004-09-08 | Silvia Hofmann | Method and device for thermographic testing on plastic materials of ship or boat hulls |
NL1029014C2 (en) * | 2005-05-11 | 2006-11-14 | Ledden Infra B V Van | Inspection device for e.g. freshly laid asphalt concrete layer, comprises passive thermographic device connected to image analysis device |
DE102014216466A1 (en) * | 2014-08-20 | 2016-02-25 | Bayerische Motoren Werke Aktiengesellschaft | Quantitative determination of the water content of materials |
ES2734725A1 (en) * | 2018-06-06 | 2019-12-11 | Univ Jaen | Procedure and equipment for the identification of cavities in a field (Machine-translation by Google Translate, not legally binding) |
-
1986
- 1986-05-14 DE DE19863616220 patent/DE3616220A1/en not_active Withdrawn
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0567078A2 (en) * | 1992-04-20 | 1993-10-27 | Kawasaki Jukogyo Kabushiki Kaisha | Method of and system for detecting moisture in honeycomb panel |
EP0567078A3 (en) * | 1992-04-20 | 1994-03-23 | Kawasaki Heavy Ind Ltd | |
US5433106A (en) * | 1992-04-20 | 1995-07-18 | Kawasaki Jukogyo Kaisha | Method for detecting moisture in a honeycomb panel |
WO1998005948A1 (en) * | 1996-07-31 | 1998-02-12 | Siemens Aktiengesellschaft | Method and device for examining the inner cooling structure of a turbine blade, in particular of stationary gas turbines |
DE10053112A1 (en) * | 2000-10-26 | 2002-05-16 | Bosch Gmbh Robert | Non-destructive thermographic testing device for detection of delamination, cracks or material defects in the surfaces of electrically conducting test pieces using a microwave source to provide inductive heating |
EP1455180A1 (en) * | 2003-03-04 | 2004-09-08 | Silvia Hofmann | Method and device for thermographic testing on plastic materials of ship or boat hulls |
NL1029014C2 (en) * | 2005-05-11 | 2006-11-14 | Ledden Infra B V Van | Inspection device for e.g. freshly laid asphalt concrete layer, comprises passive thermographic device connected to image analysis device |
DE102014216466A1 (en) * | 2014-08-20 | 2016-02-25 | Bayerische Motoren Werke Aktiengesellschaft | Quantitative determination of the water content of materials |
ES2734725A1 (en) * | 2018-06-06 | 2019-12-11 | Univ Jaen | Procedure and equipment for the identification of cavities in a field (Machine-translation by Google Translate, not legally binding) |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8127 | New person/name/address of the applicant |
Owner name: REAKU-HOBEIN GMBH, 7770 UEBERLINGEN, DE |
|
8181 | Inventor (new situation) |
Free format text: LUBER, WILLIBALD, 7060 SCHORNDORF, DE |
|
8139 | Disposal/non-payment of the annual fee |