MAKING HIGHWAYS SKID-PROOF

HIGHWAY ACCIDENTS ARE OFTEN CAUSED, NOT BY CARLESS DRIVERS, BUT BY SLIPPERY PAVEMENTS. BUILDING SKID RESISTANCE INTO ROADS IS A JOB FOR THE HIGHWAY ENGINEER. THE THEORY OF SKIDDING INDICATES THAT SKID- RESISTANT ROADS SHOULD GENERATE SUFFICIENT TIRE-ROAD TRACTION AND HAVE GOOD DRAINAGE. IDEALLY, ALL NEW ROADS SHOULD HAVE A LONG-LASTING COARSE-TEXTURES AND GRITTY SURFACE. THE TWO MAIN TYPS OF ROADS ARE MADE OF ASPHALT CONCRETE AND PORTLAND CEMENT CONCRETE. THE MOST IMPORTANT FACTOR IN MAKING SKID-RESISTANT ASPHALT-CONCRETE PAVEMENTS IS MIX DESIGN. POLISH RESISTANCE OF THE AGGREGATE IS ALSO IMPORTANT, LEST A SURFACE RAPIDLY LOSE ITS SKID RESISTANCE. SKID RESISTANCE CAN BE RESTORED TO SUCH ROADS BY USING AN ASPHALT-CONCRETE BLANKET, A SCREENING SEAL COAT, OR GROOVING. THE SURFACE FINISHING AND TEXTURING OPERATION IS THE MOST IMPORTANT FACTOR IN MAKING PORTLAND CEMENT CONCRETE SKID RESISTANT. TO GET A LONG-LASTING, SKID-RESISTANT SURFACE TEXTURE, THE BURLAP-DRAG OR THE BROOMING METHOD MAY BE USED. RESTORATION OF SKID RESISTANCE TO EXISTING ROADS MAY BE DONE BY APPLYING A SCREENING SEAL COAT OR AN ASPHALT CONCRETE BLANKET. GROOVING HAS PROVED MORE EFFECTIVE THAN THESE TWO METHODS, HOWEVER. /ASCE/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/oclc/10480594
• Supplemental Notes:
  • Vol 41, No 3, PP 42-45, 2 FIG, 4 PHOT
• Authors:
  • BEATON, J L
• Publication Date: 1971-3

Media Info

• Serial:
  • Civil Engineering
  • Publisher: American Society of Civil Engineers
  • ISSN: 0885-7024
  • Serial URL: http://www.pubs.asce.org/ceonline/newce/html

Subject/Index Terms

• TRT Terms: Aggregates; Asphalt concrete; Concrete; Flexible pavements; Highways; Pavements; Portland cement; Rigid pavements; Skid resistance; Skidding; Texture
• Subject Areas: Geotechnology; Highways; Maintenance and Preservation; Pavements;

Filing Info

• Accession Number: 00218889
• Record Type: Publication
• Files: TRIS
• Created Date: Apr 17 1972 12:00AM