01046297

Component

https://doi.org/10.3141/2016-12

http://scholar.google.com...akur&publication_year=2007

During a recent ground-proving exercise at the shared University of North Florida and University of Florida karstic limestone geophysical and ground-proving test site in central Florida, the limestone bedrock surface was mapped along several survey lines with both intrusive and geophysical techniques. Analyses of the site investigation data revealed a highly erratic limestone bedrock surface, which is common in karst terrane. Analysis of seismic refraction data demonstrated that three commercially available refraction tomography software systems can reveal the undulating bedrock surface. However, the tomography data revealed marked differences in the compression wave velocities at the top of the bedrock surface at various locations along one of the survey lines. Compression wave velocities were highest within slots or valleys and lowest at the tops of blocks or pinnacles. This variability is attributed to the geologic history of the limestone, which includes how the limestone was formed and how the limestone weathered. Ground proving via cone penetration tests and geotechnical borings appears to corroborate this finding and demonstrates the importance of measuring multiple material parameters during site characterization activities in complex terranes.

01084477

English

pp 110-120

2007

Transportation Research Record: Journal of the Transportation Research Board

9780309104432

Print

Figures (9) ; References (14)

Bedrock; Boreholes; Cone penetrometers; Geology; Geophysical prospecting; Geotechnical engineering; Karst; Limestone; Terrain; Terrain evaluation; Tomography

Compression waves; Seismic refraction; Site investigation

Florida

Geotechnology; Highways; I41: General Soil Surveys

TRIS, TRB, ATRI

Feb 8 2007 7:02PM

• Assessment of Debonding in Concrete Slabs Using Seismic Methods
• Elastic Nonlinear Finite Element Analysis of a Flexible Pavement Subjected to Varying Falling Weight Deflectometer Loads
• Evaluating the Light Falling Weight Deflectometer Device for In Situ Measurement of Elastic Modulus of Pavement Layers
• Genetic Algorithms–Based Network Optimization System with Multiple Objectives
• Gravel Roads Surface Performance Modeling
• Initial Findings on Skid Resistance of Unpaved Roads
• Mechanistic Classification of Unbound Materials
• Monod Kinetics for Aerobic Biodegradation of Calcium Magnesium Acetate: Soil Microcosms from a Highway Shoulder
• New Approach for Estimating Rock Slope Stability Using Logistic Regression Analysis
• Permanent Deformation and Critical Stress of Cohesive Soil Under Repeated Loading
• Rockfill Embankment Settlement: Sugarloaf Mountain Bridge Abutment and Hoover Dam Bypass (US-93)
• Two-Step Fracture Mechanics–Based Approach to Assess Early-Age Delamination Distress