Potential Applicability of Slab Impulse Response (SIR) in Geophysical Investigation of Pavement Structures

Proper functionality of pavement structures can be ensured with adequate quality assurance and quality control (QA/QC) during construction. By monitoring pavement health throughout its design life, authorities can reduce structural damages and achieve subsequent reduction in maintenance cost and time. Geophysical investigation is growing significantly as a tool of QA/QC of pavement structures. The increased use can be attributed to (1) decreased time consumption, (2) reduced expense, (3) lower variability of test results compared to laboratory tests, and (4) the non-reduction of structural integrity and serviceability of pavement compared to destructive testing. The current research work evaluated the applicability of the slab impulse response (SIR) method in pavement health monitoring by conducting in-situ test results at four different locations of a construction project in Dallas, Texas. The dynamic cone penetrometer (DCP) and Geogauge were utilized alongside SIR to determine the resilient and elastic modulus of the pavement layers. Field investigation results indicated that SIR can be useful in identifying damages associated with low stiffness, such as delamination, honeycombing, cracking, and voids below the slabs-on-grade. Comparisons presented in this paper demonstrated the effectiveness of SIR as an alternative tool to conventional methods of pavement health monitoring.

Language

  • English

Media Info

  • Media Type: Web
  • Pagination: pp 222-231
  • Monograph Title: Airfield and Highway Pavements 2017: Design, Construction, Evaluation, and Management of Pavements

Subject/Index Terms

Filing Info

  • Accession Number: 01685210
  • Record Type: Publication
  • ISBN: 9780784480922
  • Files: TRIS, ASCE
  • Created Date: Oct 4 2018 4:33PM