METHODS FOR REDUCING FRICTION BETWEEN CONCRETE SLABS AND CEMENT-TREATED SUBBASES

SEVENTEEN SLABS, 4' X 4' X 1/2', AND FOUR SLABS OF SLIGHTLY DIFFERENT DIMENSION, WERE CAST UPON SMOOTH, MEDIUM, AND ROUGH TEXTURED CEMENT-TREATED SUBBASES (CTS) WITH VARIOUS BOND-BREAKING MEDIUMS BETWEEN THE SLABS AND THE SUBBASE. THE MEDIUMS HAD NO CURING COMPOUND (CC); WITH CC; CC AND 1/16" THICK SAND SKIN (SS); CC WITH SS AND SIMPLE POLYETHYLENE SHEETING (PS); CC AND 1/4" SS; CC WITH 1/4" SS AND PS; AND CC WITH DOUBLE PS. WHERE BOND DEVELOPED BETWEEN THE SLABS AND THE SUBBASE, VALUES OF THE COEFFICIENT OF FRICTION RANGED FROM 8 TO GREATER THAN 51. THE SLABS WITH THE POLYETHYLENE SHEETING GAVE RESULS BETWEEN .6 AND .8. SAND BY ITSELF IS NOT RECOMMENDED SINCE BOND CAN OCCUR AT BARE SPOTS. /FHWA/

  • Corporate Authors:

    Portland Cement Association

    Cement and Concrete Research Inst
    ,   USA 

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  USA  20590
  • Publication Date: 0

Subject/Index Terms

Filing Info

  • Accession Number: 00206471
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT
  • Created Date: Mar 20 1972 12:00AM