INVESTIGATION OF FIELD PRESTRESS GROUTING PROCEDURES

A STUDY WAS MADE TO DETERMINE WHAT PROCEDURES WERE USED FOR MIXING AND PLACING GROUT IN PRESTRESSED, POST-TENSIONED STRUCTURES, AND WHAT PROBLEMS MIGHT BE ENCOUNTERED. A NUMBER OF FIELD GROUTING OPERATIONS WERE OBSERVED AND MIXING AND AND PLACING DATA WERE GATHERED. ITEMS GIVEN PARTICULAR ATTENTION WERE CEMENT LUMPING, CONDUIT TYPE, AND TEMPERATURE. IT WAS DETERMINED THAT FIELD PROBLEMS COULD BE EXPECTED TO BE REDUCED BY AT LEAST ONE-HALF IF SPECIFICATIONS WERE STRICTLY ADHERED TO. OBVIOUSLY LUMPY OR PARTIALLY HYDRATED CEMENT SHOULD NOT BE USED. GROUT VOID VOLUME WAS ABOUT 20% GREATER FOR THE RIGID (SOLID) DUCT THAN FOR THE FLEXIBLE DUCT, AND THAT AN "END PRODUCT" SPECIFICATION RATHER THAN LIMITS WOULD BE DESIRABLE IN REGARD TO GROUT TEMPERATURE. /FHWA/

  • Corporate Authors:

    California Division of Highways

    Materials and Research Department
    Sacramento, CA  USA  95819

    California Department of Public Works

    1120 N Street
    Sacramento, CA  USA  95814
  • Authors:
    • Weaver, R E
    • Freeman, R J
  • Publication Date: 1971-11

Media Info

  • Pagination: 31 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00214537
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Files: TRIS, USDOT
  • Created Date: Apr 8 1973 12:00AM