Is this project an undergraduate, graduate, or faculty project?
Undergraduate
Project Type
group
Campus
Daytona Beach
Authors' Class Standing
Keenan Hubbard, Senior
Lead Presenter's Name
Keenan Hubbard
Lead Presenter's College
DB College of Engineering
Faculty Mentor Name
Ghada Ellithy
Abstract
This research investigates the influence of geogrid reinforcement on composite pavement sections during cyclic triaxial testing, emphasizing the measurement of local strains. Six tests will be conducted on 50 mm diameter, 300 mm height composite samples, comparing performance with and without geogrids. The lower section, representing the subgrade layer, comprises bentonite clay and sand, while the upper section simulates the base course with aggregate material. A geogrid layer between these sections enhances structural stability and load distribution. The 50 mm base layer is supplemented with a 250 mm subgrade layer varying in strength at 1%, 2%, and 4% California Bearing Ratio (CBR). Tests will be conducted for each CBR, both with and without geogrid, totaling six tests. Strain gauges above and below the geogrid layer will provide insights into the local strains of the composite pavement. The geogrid's reinforcing effect on the base layer is attributed to aggregate interlocking within its apertures. By comparing local strains to average strain, this research aims to quantify and enhance understanding of geogrid reinforcement in composite pavement behavior under cyclic loading conditions, contributing to advancements in this field.
Did this research project receive funding support (Spark, SURF, Research Abroad, Student Internal Grants, Collaborative, Climbing, or Ignite Grants) from the Office of Undergraduate Research?
Yes, Student Internal Grants
Using Strain Gauges to Measure Local Strain in Cyclic Triaxial Testing
This research investigates the influence of geogrid reinforcement on composite pavement sections during cyclic triaxial testing, emphasizing the measurement of local strains. Six tests will be conducted on 50 mm diameter, 300 mm height composite samples, comparing performance with and without geogrids. The lower section, representing the subgrade layer, comprises bentonite clay and sand, while the upper section simulates the base course with aggregate material. A geogrid layer between these sections enhances structural stability and load distribution. The 50 mm base layer is supplemented with a 250 mm subgrade layer varying in strength at 1%, 2%, and 4% California Bearing Ratio (CBR). Tests will be conducted for each CBR, both with and without geogrid, totaling six tests. Strain gauges above and below the geogrid layer will provide insights into the local strains of the composite pavement. The geogrid's reinforcing effect on the base layer is attributed to aggregate interlocking within its apertures. By comparing local strains to average strain, this research aims to quantify and enhance understanding of geogrid reinforcement in composite pavement behavior under cyclic loading conditions, contributing to advancements in this field.