FLEXIBLE PAVEMENTS-INDIA

HARD STONE BLOCKS, BRICKS, SOFT AGGREGATES LIKE KANKAR, AND STABILIZED SOIL FORM THE BASE COURSES FOR ALMOST ALL THE ROADS IN INDIA. DEPENDING ON THE NATURE OF THE SOIL, STABILIZATION TECHNIQUES USING MECHANICAL GRADINGS OR ADMIXTURES SUCH AS LIME, CEMENT OR BITUMEN ARE ADOPTED. THE MOST COMMONLY USED BASE COURSE IS THE TRADITIONAL WATER BOUND MACADAM USING HARD AGGREGATES. THE BITUMINOUS SURFACINGS COMPRISE USUALLY 2 COAT SURFACE DRESSING OR THIN OPEN GRADED CARPETS. ATTEMPTS HAVE BEEN MADE TO USE SEMI- DENSE CARPETS WITH REASONABLE AGGREGATE GRADATIONS SO AS TO CUT DOWN COSTS IN AREAS OF LOW INTENSITIES OF RAINFALL. ASPHALTIC BITUMENS OR ROAD TARS FORM THE BINDER FOR ALL THE BLACK TOP SURFACES. ATTEMPTS HAVE BEEN MADE IN THE LABORATORIES, TO PROCESS LOW TEMPERATURE LIGNITE TAR FOR ROAD PURPOSES, TO IMPROVE THE DURABILITY OF HIGH TEMPERATURE TARS, AND TO DEVELOP JET FUEL RESISTING BINDERS WITH REASONABLE SUCCESS. CONVENTIONAL COMPACTION EQUIPMENT SUCH AS SHEEPS-FOOT ROLLERS, THREE WHEEL AND TANDEM ROLLERS, ARE USUALLY ADOPTED. SOIL STABILIZATION MACHINERY IS EMPLOYED WHEREVER AVAILABLE. MOST OF THE THIN BITUMINOUS SURFACINGS ARE CONSTRUCTED MANUALLY BUT IN THE CASE OF DENSE ASPHALTIC CONCRETE, HOT MIX PLANTS TOGETHER WITH PAVERS AND OTHER ANCILLARY MACHINERY ARE EMPLOYED. /AUTHOR/

• Supplemental Notes:
  • No Iii -11, 8 PP
• Authors:
  • Dubey, K N
• Publication Date: 1967

Media Info

• Serial:
  • Perm Intl Assoc Road Congresses Proc
  • Publisher: Xiiith Congress, Tokyo

Subject/Index Terms

• TRT Terms: Admixtures; Aggregate gradation; Aggregates; Asphalt; Asphalt concrete; Base course (Pavements); Binders; Bituminous materials; Compactors; Economics; Flexible pavements; Hot mix asphalt; Lignite; Pavement design; Pavers; Paving; Rollers; Soil stabilization; Soils; Stabilized materials; Stabilizers; Surface treating; Tar; Water bound macadam
• Uncontrolled Terms: Compaction equipment
• Old TRIS Terms: Bituminous surfacing
• Subject Areas: Construction; Economics; Geotechnology; Highways; Pavements;

Filing Info

• Accession Number: 00205533
• Record Type: Publication
• Files: TRIS
• Created Date: Jun 3 1994 12:00AM