<p><p><strong>References:<br></strong><em>Brill et al. (2003)<br>Bruce et al. (2001)<br>Burke et al. (2000a, 2000b, 2007b)<br>Maswoswe (2003)<br>Nicholson and Bruce (1996)</em></p><p><strong>Method Summary</strong></p><p>Cores of a specified number of columns are taken after the soilcrete has cured. This number is usually between 2 and 10% of the total number of columns. The core location depends on the requirements of the project and can be taken from the center of the column to verify the soilcrete properties or the intersection between adjacent columns to ensure that overlap has been created. In addition, the cores should be continuous throughout the entire column. This allows the engineer/contractor to verify that the soilcrete is homogeneous throughout the column.</p><p><strong>Accuracy and Precision</strong></p><p>Core samples are used to determine the strength of the column, but sometimes representative samples are hard to obtain.</p><p><strong> </strong><strong>Adequacy of Coverage</strong></p><p>Cores are usually taken from only a small percentage of columns.</p><p><strong> </strong><strong>Implementation Requirements </strong></p><p>Care is necessary to obtain good quality cores. It can be very difficult to obtain undamaged cores when jet grouting is implemented in soil with gravel.</p><p><strong> </strong><strong>General Comments</strong></p><p>Coring of columns can be done for any jet grouting operation.</p></p>