STABILISATION OF DEEP CUTS WITH LIME COLUMNS

IN SWEDEN A NEW SOIL STABILIZATION METHOD HAS BEEN DEVELOPED WHICH REPLACES SHEET PILE RETAINING WALLS BY LIME STABILIZED CLAY COLUMNS FOR THE LATERAL SUPPORT OF DEEP CUTTINGS IN SOFT CLAY SOILS. THE CHALK COLUMNS ARE MADE UP IN-SITU BY MIXING IN UNSLAKED LIME AND SUITABLE ADDITIVES. THE SPACES BETWEEN THE COLUMNS SHOULD BE SO SMALL THAT THEY INTERACT WITH ONE ANOTHER AND THUS FORM A SOLID BLOCK OF STABILIZED SOIL. A 5.2 M DEEP TEST CUTTING WAS SECURED WITH A STABILIZED COLUMN WALL. IN THIS PAPER THE MEASUREMENT RESULTS ARE PRESENTED AS WELL AS METHODS FOR THE DIMENSIONING OF SUCH COLUMN WALLS. THE COVERING ABSTRACT FOR THE CONFERENCE IS IRRD NO 306088.