TY - JOUR AU - Mohamed Saad Eldin Mohamed, AU - Mohamed Ahmed Saeed, AU - Nasser Ahmed Abdelgawad Radwan2 , PY - 2020/01/27 Y2 - 2024/03/29 TI - GEOTECHNICAL STUDY FOR NEW EGYPTIAN CAPITAL ROCKS JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 18 IS - 65 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/337 SP - 15-22 AB - <p>A laboratory study was conducted to develop a database and models for predicting of <br>unconfined compressive strength of rocks in the new administrative capital of Egypt. In this respect, the <br>present study presents correlation equations between the unconfined compressive strength and some <br>mechanical and physical properties of rocks. More than 249 of specimens are prepared and tested; the tests <br>were conducted on four rock types, including basalt, limestone, sandstone, and siltstone. Based on results <br>obtained from the following mechanical and physical tests that were performed on rock samples, unconfined <br>compressive strength, Schmidt hammer, and Brazilian splitting test, they were conducted to determine the <br>mechanical properties of rock specimens, water absorption, and porosity. They were conducted to determine <br>the physical properties of rock specimens. The results of this study indicated that the correlation between <br>unconfined compression strength and the Schmidt hammer test increases as the rock strength. The <br>relationship is found in a polynomial equation. It has been found that the strong linear correlation between <br>unconfined compression strength and Brazilian splitting test for the tested rocks. From this study, it has been <br>found that there is an inverse relationship between the unconfined compression strength and water absorption. <br>This relation is a power equation. It has been found from the present study that the unconfined compression <br>strength increases as the porosity in the rock decreases. The relation is found to be a polynomial equation. <br>The correlation coefficient (R2<br>) varies between 0.5 and 0.95 in all relations.</p> ER -