DYNAMIC TESTING OF PAVEMENTS

CERTAIN POSSIBLE MODES ARE DISCUSSED OF VIBRATION OF A PAVEMENT IN CONTACT WITH ITS SUBGRADE THAT ARE LIKELY TO OCCUR IN THE DYNAMIC TESTING OF PAVEMENTS. AN EQUATION GIVING THE RELATION BETWEEN DRIVING FREQUENCY, THICKNESS OF SLAB, ELASTIC CONSTANTS OF BOTH PAVEMENT AND SUBGRADE, AND THE VELOCITY OF WAVE IS DERIVED ON THE ASSUMPTION OF CONTINUITY OF MOTION BETWEEN PAVEMENT AND SUBGRADE. THE EQUATIONS OF ELASTICITY APPLICABLE TO A HOMOGENEOUS, ISOTROPIC, ELASTIC SOLID ARE USED FOR BOTH THE SLAB AND THE SUBGRADE. FROM A FEW DYNAMIC MEASUREMENTS IT SHOULD BE BE POSSIBLE TO DETERMINE NOT ONLY YOUNG'S MODULUS FOR THE CONCRETE BUT ALSO THE THICKNESS OF THE PAVEMENT AND A MODULUS FOR THE SUBGRADE. /PCA/

• Authors:
  • Pickett, G
• Publication Date: 0

Media Info

• Serial:
  • Portland Cement Assoc R & D Lab Bull
  • Issue Number: 0

Subject/Index Terms

• TRT Terms: Coefficient of subgrade reaction; Dynamic tests; Equations; Modulus of elasticity; Pavements; Subgrade (Pavements); Thickness; Vibration
• Uncontrolled Terms: Pavement thickness
• Subject Areas: Highways; Materials; Pavements;

Filing Info

• Accession Number: 00213459
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 6
• Files: TRIS
• Created Date: May 25 1970 12:00AM