2023 Volume 79 Issue 8 Article ID: 23-00025
When the estimated strength of improved soil cannot be achieved due to soil condition, time and economic losses may be incurred by re-performing mixing tests and re-considering an applicable construction method. To avoid this situation, it is necessary to develop methods for strength estimation as well for compensation of insufficient strength. This study summarizes the results of unconfined compression tests conducted until now using specimens with embedded micro pore water pressure gauges. In addition, splitting tension test was conducted on the chemically improved soil. The test results confirmed that the strength resulting from the adhesion force between the chemical and soil particles can be calculated from the splitting tension strength. A simple formula for strength estimation, using soil parameters obtained from preliminary investigation, was then proposed and validated with a local soil.
