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
  ,   United States 

  Federal Highway Administration

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

Subject/Index Terms

• TRT Terms: Base course (Pavements); Bonds; Cement treated soils; Concrete; Curing agents; Ethylene resins; Sand; Skin resistance; Slabs; Subbase (Pavements)
• Uncontrolled Terms: Cement treated bases; Polyethylene; Subbase
• Subject Areas: Geotechnology; Highways; Pavements;

Filing Info

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