Developing an economical and reliable test for measuring the resilient modulus and Poisson’s ratio of subgrade.

Details

• Alternative Title:
  Ohio Transportation Consortium project report.
• Creators:
  Hu, Rulan ; Zeng, David ; Neff, Frank H.
• Corporate Creators:
  Case Western Reserve University. Department of Civil Engineering
• Subject/TRT Terms:
  • Subgrade (Pavements)
  • Modulus of resilience
  • Poisson ratio
  • Soil tests
  • Soil penetration test
  • Nondestructive tests
  • Resilient modulus, Poisson's ratio, CBR test, Piezoelectric sensor, Wave velocity
• Resource Type:
  Tech Report
• Geographical Coverage:
  Ohio
• Corporate Publisher:
  Case Western Reserve University. Dept. of Civil Engineering
• Abstract:
  The resilient modulus and Poisson’s ratio of base and sub‐layers in highway use are ; important parameters in design and quality control process. The currently used techniques ; include CBR (California Bearing Ratio) test, resilient modulus test, DCP (Dynamic Cone ; Penerometer) and FWD (Falling Weight Deflectometer) tests. Nevertheless, these ; techniques have certain limitations and sometimes fail to satisfy the requirement and ; accuracy for design purposes. ; Meanwhile, piezoelectric sensors have been widely used for laboratory ; measurement of wave velocities in soil and rock specimens in recent years. For shear wave ; velocity determination, bender elements have been applied to the tests. On the other hand, ; extender elements have been used for the measurement of compression wave velocity. ; Therefore, this new laboratory testing technique is developed to measure the two ; important parameters, the resilient modulus and Poisson’s Ratio in a more advanced ; approach. The results of using this technique on a soil sample is presented and compared ; with that obtained from CBR tests. It is concluded that this new technique is simple, ; accurate and has potential to be widely used in engineering practice.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/20590/dot_20590_DS1.pdf
• File Type:
  [PDF - 652.96 KB]
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:3de37272559bfe13625ce5d05cccf79b0f6783ec38053a3f039f8ca059bc08abd503086f3c7cf87284ec5f653415923bc45f3ba618cf7ec0773e9afdd0e4dea3