Centrifuge model tests on geogrid reinforced soil walls with marginal backfills

2013 ◽  
pp. 1145-1151 ◽  
Author(s):  
S Balakrishnan ◽  
B Viswanadham
Keyword(s):  
Model Tests ◽  
Reinforced Soil ◽  
Centrifuge Model ◽  
Soil Walls ◽  
Reinforced Soil Walls ◽  
Centrifuge Model Tests

scholarly journals Centrifuge model tests for investigation of fiber reinforced soil walls

2019 ◽  
Author(s):  
Sorush Niknamian
Keyword(s):  
Reinforced Soil ◽  
Time Dependent ◽  
Fiber Reinforced ◽  
Silty Soil ◽  
Centrifuge Model ◽  
Soil Walls ◽  
Centrifuge Models ◽  
Reinforced Soil Walls ◽  
Centrifuge Model Tests ◽  
Fiber Reinforced Soil

In this study, the centrifuge model tests were used to evaluate the geotechnical properties of fiber reinforced soil walls. The reduced-scale centrifuge models were built and the clay barrier was prepared using kaoline amended silty soil. The unreinforced soil barrier was found to lose their water-tightness and integrity at lower distortion levels compared to fiber reinforced soil barriers. The silty soil used in the centrifuge models, frequently considered as having negligible creep, was ultimately found not to prevent the development of time-dependent deformations. The obtained results revealed the significant time-dependent deformations could be occurred in geotechnical structure of fiber reinforced soil walls wall systems.

Failure of Geotextile-Reinforced Walls in Centrifuge Model Tests

2013 ◽  
Vol 831 ◽  
pp. 321-325
Author(s):  
Carina Maia Lins Costa ◽  
J.G. Zornberg ◽  
Yuri Daniel Jatoba Costa
Keyword(s):  
Reinforced Soil ◽  
Nonwoven Fabrics ◽  
Centrifuge Tests ◽  
Soil Walls ◽  
Scale Models ◽  
Current Design ◽  
Reinforced Soil Walls ◽  
Reduced Scale ◽  
Image Analysis Techniques ◽  
Centrifuge Model Tests

This paper presents the results of centrifuge tests performed to investigate the behavior of geotextile-reinforced soil walls beyond stress conditions. The models were built using nonwoven fabrics as reinforcement layers and dry sand as backfill. Digital image analysis techniques were used to determine the displacement of sand markers placed along the reinforcements. The models were loaded until failure by increasing centrifugal acceleration, and the movements of the sand markers were used to determine the strain distributions along the reinforcement layers. The results revealed that stresses redistribute among reinforcement layers as models approach failure. Current design methods for GRS walls were found to be conservative when applied to predict the behavior of the reduced-scale models.

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