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Correlating the Resilient Modulus and Seismic Modulus of Subgrade Materials Incorporating Moisture and Density Variations
Resilient modulus tests are commonly used to determine the representative modulus of geomaterials and to establish their nonlinear behaviors. Such tests are complex and time consuming and therefore only performed during high-priority construction projects. In comparison, seismic modulus tests are rapid, nondestructive, and provide low-strain linear elastic moduli. Although seismic moduli are measured at lower strains than those imparted to pavements by vehicular traffic, it is desirable to relate the moduli from these two tests because the seismic modulus tests are a convenient tool for quality management of compacted geomaterials. Several geomaterials were comprehensively tested with the resilient modulus and seismic modulus devices at different moisture contents. The laboratory seismic moduli were several times greater than the corresponding representative resilient moduli. However, a reasonably well correlated relationship was observed between them. This relationship was further improved and strengthened by incorporating moisture-density parameters of the materials.
Correlating the Resilient Modulus and Seismic Modulus of Subgrade Materials Incorporating Moisture and Density Variations
Resilient modulus tests are commonly used to determine the representative modulus of geomaterials and to establish their nonlinear behaviors. Such tests are complex and time consuming and therefore only performed during high-priority construction projects. In comparison, seismic modulus tests are rapid, nondestructive, and provide low-strain linear elastic moduli. Although seismic moduli are measured at lower strains than those imparted to pavements by vehicular traffic, it is desirable to relate the moduli from these two tests because the seismic modulus tests are a convenient tool for quality management of compacted geomaterials. Several geomaterials were comprehensively tested with the resilient modulus and seismic modulus devices at different moisture contents. The laboratory seismic moduli were several times greater than the corresponding representative resilient moduli. However, a reasonably well correlated relationship was observed between them. This relationship was further improved and strengthened by incorporating moisture-density parameters of the materials.
Correlating the Resilient Modulus and Seismic Modulus of Subgrade Materials Incorporating Moisture and Density Variations
Mazari, Mehran (author) / Navarro, Eric (author) / Garibay, Jose (author) / Abdallah, Imad (author) / Nazarian, Soheil (author)
2013 Airfield & Highway Pavement Conference ; 2013 ; Los Angeles, California, United States
Airfield and Highway Pavement 2013 ; 1328-1335
2013-06-18
Conference paper
Electronic Resource
English
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