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INSTRUCTORS:
Mohamed Hassan
Arash Khosravifar
Richard Buhler
Amanda Sampaio
Jaime Suarez
Course Length: 1 hour
Purpose and Background
These presentations were recorded at the Geo-Congress 2026.
Shear Behavior of Mangrove Soils in Louisiana and Texas: A Dual Approach Using Large-scale Direct Shear Testing and In-Situ Cone Penetration Testing (11 minutes)
This presentation investigates the shear behavior of mangrove soils found in Louisiana and Texas, which are critical for coastal stability and infrastructure design. Mangrove soils are highly organic and exhibit unique mechanical properties compared to conventional soils. The study combines large-scale direct shear testing with in-situ cone penetration testing (CPT) to better understand their behavior. Laboratory testing provides controlled conditions, while CPT offers real-time field data. The integration of both approaches improves the reliability of shear strength estimation. Results highlight variability in soil strength due to organic content and environmental conditions. These findings support improved design practices for coastal and wetland infrastructure.
Pile-Supported Wharf Subjected to Lateral Ground Deformations and Superstructure Inertial Loads (11 minutes)
This presentation examines the performance of pile-supported wharf structures subjected to lateral ground deformations and superstructure inertial loads. Such conditions often occur during seismic events or soil movement. The study evaluates how combined loading affects structural response and stability. Numerical modeling and case analyses are used to assess pile behavior and load distribution. Results highlight the importance of considering both ground deformation and inertial forces in design. The interaction between soil and structure plays a key role in performance. The findings contribute to safer and more resilient waterfront infrastructure design.
Sevier Bridge Dam Old vs. New - Phase II Rehabilitation (14 minutes)
This presentation discusses Phase II of the Sevier Bridge Dam rehabilitation project, comparing old and new structural conditions. Aging infrastructure often requires upgrades to meet modern safety and performance standards. The project evaluates deficiencies in the original design and implements improvements. Rehabilitation strategies include structural strengthening and material upgrades. The presentation highlights challenges encountered during construction and design. Performance improvements are assessed through analysis and monitoring. The project demonstrates best practices in dam rehabilitation and lifecycle management.
Impact of Reservoir Fluctuations on Cracking and Erosion: Physical Modeling and Numerical Investigation (14 minutes)
This presentation investigates the impact of reservoir water level fluctuations on cracking and erosion processes. Fluctuating water levels can induce stress changes in soil and rock, leading to structural damage. The study combines physical modeling with numerical simulations to analyze these effects. Results show how repeated wetting and drying cycles contribute to crack formation. Erosion mechanisms are also evaluated under varying conditions. The research highlights the importance of understanding reservoir dynamics in design and maintenance. These insights support improved management of dam and reservoir systems.
A Comparison of Interface and Drainage Properties of Wicking and Non-wicking Geotextiles for Coastal Infrastructure (11 minutes)
This presentation compares the interface and drainage properties of wicking and non-wicking geotextiles used in coastal infrastructure. Geotextiles play a critical role in filtration, separation, and drainage. Wicking geotextiles are designed to transport moisture through capillary action, while non-wicking types rely on conventional drainage. The study evaluates performance differences under coastal conditions. Laboratory and field tests assess drainage efficiency and interface behavior. Results indicate that wicking geotextiles can improve moisture management. These findings support better material selection for coastal and geotechnical applications.
Benefits and Learning Outcomes
Upon completion of this course, you will be able to:
- Describe the shear behavior of mangrove soils using both laboratory and in-situ testing methods.
- Explain how lateral ground deformation and inertial loads affect pile-supported wharf performance.
- Identify key considerations in the rehabilitation of aging dam infrastructure.
- Discuss how reservoir fluctuations influence cracking and erosion in geotechnical systems.
- Explain the performance of wicking and non-wicking geotextiles in coastal infrastructure applications.
Assessment of Learning Outcomes
Students' achievement of the learning outcomes will be assessed via a short post-test assessment (true-false, multiple choice, and/or fill in the blank questions).
Who Should Attend?
- Geotechnical Engineer
- Civil Engineers (Geotechnical/Foundations focus)
- Engineering Geologists
- Infrastructure & Transportation Engineers
- Construction Engineers and Managers
- Researchers, Faculty, and Students in Geotechnics
How to Earn your CEUs/PDHs and Receive Your Certificate of Completion
To receive your certificate of completion, you will need to complete a short on-line post-test and receive a passing score of 70% or higher within 365 days of the course purchase.
How do I convert CEUs to PDHs?
1.0 CEU = 10 PDHs [Example: 0.1 CEU = 1 PDH]