Condition monitoring of deteriorating concrete dams using

Leave Comment

Condition monitoring of deteriorating concrete dams using ...

01/03/2001  Remote monitoring of the deterioration process of concrete dams has been studied by using radar to measure laboratory-size concrete specimens. The specimens represent five different physical conditions of deteriorating concrete dams. The investigation includes the manufacturing and the radar measurements of the specimens, and the implementation of signal processing schemes for

Get price

Condition monitoring of deteriorating concrete dams using ...

Remote monitoring of the deterioration process of concrete dams has been studied by using radar to measure laboratory-size concrete specimens. The specimens represent five different physical conditions of deteriorating concrete dams. The investigation includes the manufacturing and the radar measurements of the specimens, and the implementation of signal processing schemes for

Get price

Condition monitoring of deteriorating concrete dams using ...

Download Citation Condition monitoring of deteriorating concrete dams using radar Remote monitoring of the deterioration process of concrete dams has been studied by using

Get price

Condition monitoring of deteriorating concrete dams using ...

Article “Condition monitoring of deteriorating concrete dams using radar.” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide opportunities to make unexpected discoveries and obtain ...

Get price

Condition Assessment and Monitoring of Deteriorating ...

condition monitoring and remaining strength prediction for deteriorating concrete structures. A Bayesian dynamic linear model is used to describe the dynamics of the condition monitoring parameters. This model incorporates a certain deterioration model and will be used to describe the process of structural performance deterioration. When monitoring information becomes available,

Get price

Effects of Concrete Deterioration on Safety of Dams

Concrete deterioration encompasses physical processes that are constantly acting on the concrete with time, or an internal condition that may affect the physical structure of the material itself. Examples of concrete deterioration processes include sulfate attack, alkali-aggregate reaction (AAR), and freezing and thawing (F/T) deterioration.

Get price

Automated performance monitoring of concrete dams - Lunds ...

Condition monitoring of concrete dams, or hydropower concrete structures, has until recently been an area of relatively low priority. Nevertheless, these structures represent a significant economical value. From a dam safety perspective, the reasons for condition monitoring are not significant. But as high availability has high priority, condition monitoring should be considered as one of the ...

Get price

(PDF) Damage Characterization in Concrete Dams Using ...

This work presents the results of dynamic measurements carried out at Cabril dam, the highest Portuguese arch dam, under operational conditions. The results observed are compared with those of a numerical model of 3D finite elements, based on the

Get price

Types and Causes of Concrete Deterioration

Types and Causes of Concrete Deterioration Fig. 4. Deicing salts are a major cause of corrosion of reinforcing steel in concrete. (55807) Table 2. Maximum Chloride Ion Content of Concrete (ACI 318) Maximum Type of Member Cl-* Prestressed concrete 0.06 Reinforced concrete exposed to chloride in service 0.15 Reinforced concrete that will be dry or protected from moisture in service 1.00 Other ...

Get price

Condition monitoring of deteriorating concrete dams using ...

Article “Condition monitoring of deteriorating concrete dams using radar.” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide opportunities to make unexpected discoveries and obtain ...

Get price

Concrete cladding - monitoring building condition

5.1 Concrete 15 5.2 Deterioration - concrete 15 5.3 Steel (Reinforcement) 15 5.4 Deterioration - steel (corrosion stages) 16 5.5 Risk assessment guidance 17 5.6 Health and safety guidance 17 Appendix 1 - Cladding defect examples 19 . 3 1. Introduction Concrete cladding – monitoring condition Maintaining an understanding of building condition and building performance is a key responsibility ...

Get price

Health monitoring of concrete dams: a literature review ...

11/05/2014  Health monitoring of concrete dams commonly referred to as dam surveillance is a process of assessing the structural integrity of dams through detection of any abnormality as early as possible which could be an indicator of some danger and allowing sufficient forewarning for the implementation of appropriate corrective measures. Regulations and guidelines have been developed to help dam ...

Get price

Condition assessment and monitoring of deteriorating ...

One of the major factors affecting structural performance in time is deterioration of its components due to environmental conditions. Because large uncertainties are associated with the process of structural deterioration, probabilistic inference methods are more suitable for strength assessment and prediction. This contribution proposes a new framework of condition monitoring and remaining ...

Get price

Condition monitoring of concrete bridge decks through ...

Condition monitoring of concrete bridge decks through periodical NDE using multiple technologies ... condition when deterioration has already progressed. Nondestructive evaluation (NDE) methods, on the other hand, enable detection of deterioration processes at their early stages. Some state DOTs have implemented NDE technologies. However, very often those would rely on the application a single ...

Get price

Condition Monitoring System for Reinforced Concrete Structures

Patent pending concrete condition monitoring system providing ‘real-time’ information on temperature, hydration and water and ionic movement within in the concrete cover-zone which are of relevance in the performance/ durability of concrete exposed to different environmental actions. TECHNOLOGY The performance of the surface zone of concrete (i.e. the cover) is acknowledged as a major ...

Get price

Deterioration progression monitoring in concrete bridge ...

Deterioration progression monitoring in concrete bridge decks using periodical NDE surveys N. Gucunski1 H. Parvardeh2, F ... condition of reinforced concrete decks. They provide condition data with a high spatial resolution and can also objectively summarize the condition through condition rating indices. However, their implementation was mostly related, primarily due to the speed of NDE data ...

Get price

(PDF) Damage Characterization in Concrete Dams Using ...

This work presents the results of dynamic measurements carried out at Cabril dam, the highest Portuguese arch dam, under operational conditions. The results observed are compared with those of a numerical model of 3D finite elements, based on the

Get price

Damage Detection and Condition Monitoring of Pre-stressed ...

Damage Detection and Condition Monitoring of Pre-stressed Concrete Bridges by using Vibration-based Health Monitoring Techniques K.S.D.M. Fernando, D.M.C.D. Dissanayake, M.A.K.M. Dharmasiri and A .J. Dammika Abstract: Damage detection plays a vital role in bridges as the structural performance of the bridges decreases progressively throughout their service life due to many deterioration ...

Get price

Characterization of Deterioration Progression in Concrete ...

The paper provides results of a five and a half years long condition monitoring of a concrete deck of a bridge in Virginia through four periodical NDE surveys. The ability of the NDE methods to detect and quantify deterioration progression is demonstrated through a comparison of generated condition maps, and calculated condition indices. It is also demonstrated that condition indices can be ...

Get price

Condition monitoring of deteriorating concrete dams using ...

Article “Condition monitoring of deteriorating concrete dams using radar.” Detailed information of the J-GLOBAL is a service based on the concept of Linking, Expanding, and Sparking, linking science and technology information which hitherto stood alone to support the generation of ideas. By linking the information entered, we provide opportunities to make unexpected discoveries and obtain ...

Get price

Condition Monitoring of Concrete Lucideon

Condition monitoring of concrete provides information and data during the casting process, as well as during the life of the structure to enable efficient and economical maintenance. At Lucideon, we can: Monitor the temperature of wet concrete after pouring which is valuable in determining when formwork can be stripped and when assessing the hydration levels of the concrete. Early stripping of ...

Get price

Condition assessment and monitoring of deteriorating ...

One of the major factors affecting structural performance in time is deterioration of its components due to environmental conditions. Because large uncertainties are associated with the process of structural deterioration, probabilistic inference methods are more suitable for strength assessment and prediction. This contribution proposes a new framework of condition monitoring and remaining ...

Get price

Dam Safety How are dams checked?

Concrete dams have tunnels running through them called inspection galleries. These are just big enough for a person to walk through, so the engineer can inspect the condition of the dam inside as well as outside. The surface of the concrete is checked for deterioration and cracking. The engineer also looks for any signs that could show that the dam or sections of it are moving. Checks are also ...

Get price

Deterioration progression monitoring in concrete bridge ...

Deterioration progression monitoring in concrete bridge decks using periodical NDE surveys N. Gucunski1 H. Parvardeh2, F ... condition of reinforced concrete decks. They provide condition data with a high spatial resolution and can also objectively summarize the condition through condition rating indices. However, their implementation was mostly related, primarily due to the speed of NDE data ...

Get price

Paper Deformation monitoring of earth dams using laser ...

Monitoring earth dams plays an essential role in evaluating the structural safety condition of this type of dams. Monitoring activities are related mainly with safety but also with the collection of valuable data to enhance the understanding of the behaviour of these structures. These purposes are not mutually independent but rather complementary (ICOLD, 1982). Monitoring a dam involves ...

Get price

Automated performance monitoring of concrete dams

The Swedish hydropower industry operates a large number of power plants and dams geographically spread over the country. The level of safety of a specific dam is to a large extent determined during the design and construction phases that in the case of Swedish hydropower plants took place several decades ago. Condition monitoring of concrete dams, or hydropower concrete structures, has until ...

Get price

Damage Detection and Condition Monitoring of Pre-stressed ...

Damage Detection and Condition Monitoring of Pre-stressed Concrete Bridges by using Vibration-based Health Monitoring Techniques K.S.D.M. Fernando, D.M.C.D. Dissanayake, M.A.K.M. Dharmasiri and A .J. Dammika Abstract: Damage detection plays a vital role in bridges as the structural performance of the bridges decreases progressively throughout their service life due to many deterioration ...

Get price

Characterization of Deterioration Progression in Concrete ...

The paper provides results of a five and a half years long condition monitoring of a concrete deck of a bridge in Virginia through four periodical NDE surveys. The ability of the NDE methods to detect and quantify deterioration progression is demonstrated through a comparison of generated condition maps, and calculated condition indices. It is also demonstrated that condition indices can be ...

Get price

Acoustic Surface Wave Condition Monitoring of Subsea ...

Condition monitoring of subsea concrete structure of Shahid Rajaee Harbor using SASW is discussed in this paper. The paper also pays some attention to methods for underwater nondestructive testing of concrete and detecting of faults. Proposed method refers to the determination of the propagation times between the transducer sample and imapctor by determining the frequency dependent on the ...

Get price
Contact us

Submit online

Please leave a message below and we will contact you as soon as possible.