Performance Monitoring of Rammed Aggregate Piers: A Stockyard Case History Site

Kurt Bal, Ece
Öner, Lale
Çetin, Kemal Önder
This paper investigates the design aspects of Rammed Aggregate Pier® (RAP) treatment as a composite treatment for the unfavourable ground conditions, the construction, QA/QC measures and the verification of the performance via a comprehensive instrumentation scheme. For this purpose, instrumented full scale load test was performed for the stockyard project site in Izmir, Turkey. The soil profile is comprised of fill and soft sandy clay layers overlain by the pyroclastic bedrock. 6 to 18 m long RAP elements were installed in a square grid spaced between 1.5 m and 2.0 m to improve bearing capacity and settlement responses, to accelerate the time rate of settlement (i.e.: consolidation) and to mitigate the liquefaction potential at the project site. The foundation settlement was estimated by RocScience‐Settle 3D software, which was observed to be 30 % smaller than the measured values. After the ground improvement with RAP elements, the foundation settlements were measured as less than 10 cm as compared to 40 ‐ 60 cm settlement predictions of the untreated system.


CPT-Based Assessment of Densification After Ground Improvement with Rigid Inclusions and Rammed Aggregate Piers® (RAP)
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© 2020, Springer Nature Switzerland AG.Within the scope of this manuscript, the mitigation performance of a composite ground improvement solution, which is composed of 18 m long 40 cm diameter GeoConcrete® Column (GCC) and 50 cm diameter Impact® Rammed Aggregate Pier® (RAP) along with 40 m long 80 diameter piles is assessed by pre- and post-cone penetration testing (CPT). These elements are designed for controlling excessive total and differential settlements, and liquefaction triggering at a paper mill sit...
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Citation Formats
E. Kurt Bal, L. Öner, and K. Ö. Çetin, “Performance Monitoring of Rammed Aggregate Piers: A Stockyard Case History Site,” XVI Danube – European Conference on Geotechnical Engineering, 7 - 09 Haziran 2018, 2018, Accessed: 00, 2021. [Online]. Available: