GROUTING PROGRAM FOR PILE REPAIRS-PORTWARIA AUTOMATA, ACAJUTLA, EL SALVADOR

FROM 1967 TO 1970, AN AUTOMATED PIER WAS BUILT FOR THE COMISSION EJECUTIVA PORTUARIA AUTOMATA, AT ACAJUTLA, EL SALVADOR. THE PIER WAS FOUNDED ON PILES SUNK INTO VOLCANIC TUFF, WHICH IS THE ROCK NATIVE TO THE AREA. THE FINAL LOAD TESTING PROGRAM RESULTED IN UNACCEPTABLE SETTLEMENT OF CERTAIN PILES, IN EXCESS OF 0.4 IN (9 MM) AND UP TO 2.1 IN (54). A DRILLING AND CORING PROGRAM REVEALED THE FOLLOWING DEFECTS: (1) SEGREGATION OF COARSE AGGREGATE, SAND, AND CEMENT IN THE CONCRETE IN THE PILE, OR (2) UNSTABLE GROUND AT THE BASE OF THE PILE, OR (3) SOME COMBINATION OF (1) AND (2). WATER PRESSURE TESTING, FOLLOWING THE DRILLING AND CORING PROGRAM, INDICATED THAT SOME GROUT COLLARS BETWEEN THE PILES AND THE VOLCANIC TUFF HAD BEEN BROKEN BY THE SETTLEMENT. REMEDIAL PROCEDURES CONSISTED OF: (1) REMOVAL OF SEGREGATED SAND AND CEMENT FROM THE PILES AND REPLACEMENT WITH CEMENT GROUT; (2) REMOVAL OF LOOSE MATERIAL AT THE BASE OF THE PILE AND REPLACEMENT WITH CEMENT GROUT, OR (3) STABILIZATION OF LOOSE MATERIAL AT THE BASE OF THE PILES WITH CHEMICAL GROUT; AND (4) RESEALING OF GROUT COLLARS WITH A COMBINATION OF CEMENT AND CHEMICAL GROUT WHERE WATER PRESSURE TESTS INDICATED DEFECTS. /ACIJ2P/

  • Authors:
    • Annett, S R
  • Publication Date: 1972-1

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  • Accession Number: 00209634
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 9 1972 12:00AM