REPORT ON EXPERIMENTAL PROJECT IN MICHIGAN

THE IMPORTANT DESIGN FEATURES OF THIS TEN-YEAR STUDY ARE JOINT SPACING, JOINT DESIGN, PAVEMENT CROSS SECTION, STEEL REINFORCEMENT, UNIFORM THICKNESS VERSUS BALANCED CROSS SECTION, STRESS CURING, AND RELATION OF PAVEMENT CROSS SECTION TO SUBGRADE SUPPORTING VALUES. IN ADDITION SUCH CONSTRUCTION FEATURES AS MECHANICAL SPREADING OF CONCRETE, MECHANICAL TAMPING OF FORMS, AND JOINT SEALING COMPOUNDS WERE INCLUDED FOR OBSERVATIONAL STUDY. IN ORDER TO EVALUATE THESE DESIGN FEATURES UNDER CONTROLLED CONDITIONS IT WAS NECESSARY TO DIVIDE THE PROJECT INTO 12 TEST AREAS OR SERIES. TO FACILITATE THE STUDY OF A PARTICULAR DESIGN FEATURE EACH SERIES HAS BEEN FURTHER SUBDIVIDED INTO DIVISIONS AND SECTIONS DESIGNATED BY LETTERS AND NUMERALS, RESPECTIVELY. THE MOST OUTSTANDING CONTRIBUTIONS DERIVED FROM THE TEST ROAD STUDIES INCLUDED IN THE DESIGN PROJECT HAVE BEEN: (1) THE USE OF BITUMINOUS-RUBBER JOINT SEAL MATERIALS; (2) MECHANICAL FORM TAMPING; (3) THE CHANGE TO LONG SLABS WITH HEAVIER STEEL AND NO INTERMEDIATE PLANE OF WEAKNESS JOINTS; (4) THE USE OF GROOVE TYPE CONTRACTION JOINT CONSTRUCTION; (5) THE USE OF HEAVIER AND MORE CLOSELY SPACED DOWEL BARS FOR ROAD TRANSFER IN TRANSVERSE JOINTS; AND (6) THE ELIMINATION OF EXPANSION JOINTS EXCEPT AT DESIGNATED LOCATIONS AND DURING FALL CONSTRUCTION. MISCELLANEOUS PROJECT INFORMATION PERTAINING TO SOIL, TRAFFIC AND CLIMATIC CONDITIONS ARE CONTAINED, INCLUDING A DISCUSSION OF THE GENERAL BEHAVIOR OF JOINTS, SLAB MOVEMENT AND SEVERAL INCIDENTAL STUDIES ASSOCIATED WITH THE PROJECT. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 35-88
  • Monograph Title: Joint spacing in concrete pavements: 10 year reports on six experimental projects
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00207417
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: May 22 1972 12:00AM