In isolation cyclic load-extension behaviour of a geocomposite

• Type: Article in International Conference Proceedings Book
• Date: 2010

Authors

Castorina Silva Vieira (Author) FEUP; Maria de Lurdes Lopes (Author) FEUP; Laura Caldeira (Author) Other

Conference proceedings International

Title: 9th International Conference on Geosynthetics - Geosynthetics: Advanced Solutions for a Challenging World, ICG 2010

Pages: 593-596

9th International Conference on Geosynthetics - Geosynthetics: Advanced Solutions for a Challenging World, ICG 2010

Guaruja, 23 May 2010 through 27 May 2010

Indexing

Scopus - 0 Citations

Scientific classification

FOS: Engineering and technology > Civil engineering

Other information

Authenticus ID: P-009-VDD

Abstract (EN): This work describes some cyclic load-extension tests performed on a geocomposite used as reinforcement material. The cyclic tests are load controlled, divided in two categories: constant strain rate unload-reload tests and constant load rate unload-reload tests. The tests with constant strain rate were performed with five load amplitude of unload-reload cycles. In the constant load rate tests, ten unload-reload cycles with constant amplitude and different load frequencies are imposed. The load-strain behaviour of the geocomposite was characterised using the unload and the reload stiffness, the plastic strain, the cumulated strain and the damping ratio. This study pointed out that the damping ratio of the geocomposite tends to decrease, while the stiffness tends to increase, with the number of loading cycles. For the analysed range of load frequencies, the unload and the reload stiffness are not very sensitive to the frequency. The damping ratio tends to decrease with frequency of loading. The specimens previously subjected to cyclic loading did not show significant reduction of the tensile strength when monotonically tested.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 4