A REPORT ON DENSITY TESTING ON ASPHALTIC SURFACE COURSE IN ALBERTA

DURING THE PAST FEW YEARS THE ALBERTA HIGHWAYS DEPARTMENT HAS SHIFTED FROM THE TIME HONORED HAMMER & CHISEL METHOD TO CORING IN ORDER TO OBTAIN SPECIMENS FOR DENSITY TESTING ON SURFACE COURSE PROJECTS. COMPARISONS HAVE BEEN MADE BETWEEN THE TWO METHODS, AND RESULTS CONFIRM THE SUPERIORITY OF THE CORING METHOD. THIS SUPERIORITY IS EVIDENT IN A NUMBER OF AREAS. SOME LABORATORY WORK HAS BEEN DONE ON INVESTIGATING THE USEFULNESS OF AN APPARATUS WHICH MEASURES AIR PERMEABILITY OF PAVEMENT MIXES. LITERATURE CONCERNING THE INSTRUMENT CLAIMS THAT THE CORRELATION BETWEEN DENSITY AND AIR PERMEABILITY ALLOWS THE MACHINE TO BE USED FOR DENSITY DETERMINATION. TO DATE THE INSTRUMENT'S USEFULNESS APPEARS LIMITED. THE MOST ECONOMICAL AND RELIABLE METHOD OF OBTAINING PAVEMENT DENSITIES IS WITH THE USE OF CORING MACHINES. OTHER METHODS USED OR INVESTIGATED HAVE DEFINITE DISADVANTAGES WHEN COMPARED TO THE CORING PROCEDURE. THE PRESENT AND FUTURE DEVELOPMENT OF NUCLEAR, NONDESTRUCTIVE METHODS MAY REPLACE THE CORING UNIT. ECONOMICS AND THE FACT THAT A VISUAL INSPECTION OF A CROSS-SECTION OF THE FINISHED PRODUCT CAN BE MADE MAKE CORING AT PRESENT THE MORE PREFERABLE. /CGRA/

• Supplemental Notes:
  • Vol 19, 8 PP, 1 FIG, 1 TAB
• Authors:
  • Kathol, B
• Conference:
  • Western Assoc Can Hwy Officials Proc
• Publication Date: 1966-4

Subject/Index Terms

• TRT Terms: Air; Bituminous materials; Core samples; Correlation analysis; Cross sections; Density; Economics; Laboratory studies; Nondestructive tests; Pavement design; Permeability; Surface course (Pavements); Surface treating
• Old TRIS Terms: Bituminous surfacing; Coring
• Subject Areas: Data and Information Technology; Economics; Highways; Pavements;

Filing Info

• Accession Number: 00206576
• Record Type: Publication
• Source Agency: CANADIAN GOOD ROADS ASSOCIATION
• Files: TRIS
• Created Date: Sep 30 1994 12:00AM