Abstract
Organic soil has a high content of water and compressibility. This paper sheds light on organic soil and improving its shear resistance through the use of stone columns to strengthen the shear resistance and reduce precipitation. Four columns of crushed concrete were used after mixing them with 9% sodium silicate, and this ratio was chosen after several laboratory tests to determine the ideal ratio. The ideal curing period gives the highest compressive strength for crushed concrete mixed with sodium silicate. The experiment was conducted several times with untreated soil, then the soil was treated with untreated loamy columns, and it showed an improvement rate of 423% compared to unimproved soil. Then, columns based on a base were used. The improvement rate has reached 700% of the unimproved soil, considering the use of the same test conditions and the same percentage of sodium silicate, in addition to using similar diameters and lengths of columns.
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