MEASUREMENT OF THE BEARING CAPACITY OF ROADS--A COMPARISON BETWEEN FOUR MEASURING METHODS

The present report deals with a comparative investigation of four different methods for measurement of the bearing capacity of roads, namely: conventional static plate bearing test (SP); deflection measurement at transient drop hammer loading (DH); deflection measurement at heavy vibrator loading (HV); and determination of dynamic elastic modulus from measurements of propagation of elastic waves caused by a light vibrator (LV). All methods were tried regularly on eight test sections on eight occasions distributed over one climate cycle. Based on the main sequence of tests a judgement of the four systems with respect to: technical features; measuring capacity; and measuring costs has been made. Seasonal variations were significant only on thick bituminous pavements and pavement on organic soil. On such measuring objects there is also a significant difference between static and nonstatic tests. Where high measuring capacity in mileage is important Swedish experience is not in favor of static measurements, including Benkelman beam systems, neither of existing wave propagation measuring systems. This work was sponsored by the Swedish Road Administration.

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 47 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00099211
  • Record Type: Publication
  • Source Agency: Highway Safety Research Institute
  • Report/Paper Numbers: 61A
  • Files: TRIS, ATRI
  • Created Date: Nov 5 1975 12:00AM