A SONIC METHOD TO DETERMINE PAVEMENT THICKNESS

THE THEORETICAL AND PRACTICAL ASPECTS ARE PRESENTED OF A TECHNIQUE FOR DETERMINING THE THICKNESS OF CONCRETE SLABS BY NONDESTRUCTIVE MEANS. THE LONGITUDINAL RESONANT-FREQUENCY WAVE LENGTH, WHICH IS EQUAL TO TWICE THE THICKNESS, CAN BE DETERMINED FROM VALUES OF PULSE VELOCITY AND RESONANT FREQUENCY. THE DATA INDICATE THAT THE DIFFERENCE BETWEEN THE NONDESTRUCTIVE DETERMINATION AND THE THICKNESS AS MEASURED ON ONE CORE IS APPROXIMATELY 5 PERCENT FOR ANY ONE POINT ON THE SLAB, AND BETWEEN 2 AND 3 PERCENT IF A NUMBER OF SUCH COMPARISONS ARE MADE ALONG THE SLAB. SURFACE CRACKS, OTHER DEFECTS, AND CONSTRUCTION FEATURES MAY, HOWEVER, INCREASE THE DIFFERENCES. /PCA/

• Authors:
  • Muenow, R
• Publication Date: 0

Media Info

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

Subject/Index Terms

• TRT Terms: Concrete; Nondestructive tests; Slabs; Sonic tests; Thickness
• Old TRIS Terms: Sonic testing
• Subject Areas: Highways; Materials;

Filing Info

• Accession Number: 00213602
• Record Type: Publication
• Source Agency: Portland Cement Association
• Report/Paper Numbers: No 163
• Files: TRIS
• Created Date: Jun 1 1970 12:00AM