A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Aaldringstendenser i fyllningsdammar. Foerstudie. (Ageing in embankment dams. Pilot study)
In this pilot study the ongoing work in the ICOLD Subcommittee on ageing of earth and rockfill dams is described. The following ageing scenarios are presented in detail: *Aging of foundation materials resulting in internal erosion. *Aging of embankment materials resulting in internal erosion. * Aging of embankment materials resulting in surface erosion. *Aging resulting in loss of bond between concrete structures and the embankment. From the statistics of a number of cases reported by ICOLD committee on deterioration of dams and reservoirs it is concluded that deterioration resulting in surface erosion is the most common deterioration after percolation in the foundation and dam body. However, it should be noted that among the cases with surface erosion no failure has been reported. Attention should also be drawn to the frequency of failures related to bonding between structures and adjoining embankments. It may be pointed out that bonding between structures and adjoining structures and internal erosion in the dam body are the types of deterioration with the highest probability of causing failures. Finally, the research needs in aging of embankment dams are described. It is proposed that aging phenomena, which are difficult to detect, should be studied further in order to reach a better understanding as well as study appropriate methods for their detection. Also earlier observed aging cases in Swedish embankment dams should be studied and reported, and methods of detecting aging should be studied and tested. (15 refs., 10 tabs., 4 figs.).
Aaldringstendenser i fyllningsdammar. Foerstudie. (Ageing in embankment dams. Pilot study)
In this pilot study the ongoing work in the ICOLD Subcommittee on ageing of earth and rockfill dams is described. The following ageing scenarios are presented in detail: *Aging of foundation materials resulting in internal erosion. *Aging of embankment materials resulting in internal erosion. * Aging of embankment materials resulting in surface erosion. *Aging resulting in loss of bond between concrete structures and the embankment. From the statistics of a number of cases reported by ICOLD committee on deterioration of dams and reservoirs it is concluded that deterioration resulting in surface erosion is the most common deterioration after percolation in the foundation and dam body. However, it should be noted that among the cases with surface erosion no failure has been reported. Attention should also be drawn to the frequency of failures related to bonding between structures and adjoining embankments. It may be pointed out that bonding between structures and adjoining structures and internal erosion in the dam body are the types of deterioration with the highest probability of causing failures. Finally, the research needs in aging of embankment dams are described. It is proposed that aging phenomena, which are difficult to detect, should be studied further in order to reach a better understanding as well as study appropriate methods for their detection. Also earlier observed aging cases in Swedish embankment dams should be studied and reported, and methods of detecting aging should be studied and tested. (15 refs., 10 tabs., 4 figs.).
Aaldringstendenser i fyllningsdammar. Foerstudie. (Ageing in embankment dams. Pilot study)
A. Nilsson (author) / U. Norstedt (author)
1992
45 pages
Report
No indication
English
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