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A platform for research: civil engineering, architecture and urbanism
Electrokinetic cementation of calcareous sand for offshore foundations
A large-scale experimental study was conducted on electrokinetic cementation of calcareous sand for offshore foundations. A steel tube, 200 mm in diameter and 400 mm in length, was used as a model caisson. Calcareous sand and seawater from the coastline of Western Australia were used in the study. The cementation treatment consisted of 2 phases: the treatment after caisson installation (phase A) and the remediation treatment after pullout failure (phase B). Twelve electrodes made of perforated steel pipes were installed around the caisson. A DC voltage of 6 volts with current intermittence and polarity reversal was applied with the caisson serving as 1 electrode and 6 of the 12 electrodes serving as the second electrode in phase A, and the other 6 electrodes and the caisson in phase B of the treatment. A control test with identical configurations was also set to provide baseline data. The results showed that the pullout resistance of the foundation model increased by 119% in phase A, and by 214% in phase B, as compared with the control.
Electrokinetic cementation of calcareous sand for offshore foundations
A large-scale experimental study was conducted on electrokinetic cementation of calcareous sand for offshore foundations. A steel tube, 200 mm in diameter and 400 mm in length, was used as a model caisson. Calcareous sand and seawater from the coastline of Western Australia were used in the study. The cementation treatment consisted of 2 phases: the treatment after caisson installation (phase A) and the remediation treatment after pullout failure (phase B). Twelve electrodes made of perforated steel pipes were installed around the caisson. A DC voltage of 6 volts with current intermittence and polarity reversal was applied with the caisson serving as 1 electrode and 6 of the 12 electrodes serving as the second electrode in phase A, and the other 6 electrodes and the caisson in phase B of the treatment. A control test with identical configurations was also set to provide baseline data. The results showed that the pullout resistance of the foundation model increased by 119% in phase A, and by 214% in phase B, as compared with the control.
Electrokinetic cementation of calcareous sand for offshore foundations
Elektrokinetische Verfestigung von kalkhaltigen Sand für Offshorebauwerksgründungen
Mohamedelhassan, Eltayeb (author) / Shang, Julie Q. (author)
2008
8 Seiten, 19 Quellen
Article (Journal)
English
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