Using Strain Gauges to Measure Local Strain in Cyclic Triaxial Testing
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.
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.