EVALUATION OF MULTISTAGE TRIAXIAL TEST TO CONVENTIONAL TRIAXIAL TEST ON PATAS CLAYSTONE, EAST KALIMANTAN

• Main Author: RACHMAWAN (NIM 12104063), RIANDI
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/11258
• Institution: Institut Teknologi Bandung

In mining industry, rock is the primer material that we have to face in. Generally, the characteristic and behaviour of rock have been learned in geomechanics discipline. Then, for the special behaviour of rock, such as mechanical and physical behaviour for intact rock and rock masses were learned in rock mechanics. One of rock mechanic testing for discovering the mechanical properties of intact rocks is conventional triaxial method. Hoek (2000) gave the statement that the minimal data to get better results of conventional triaxial test are five times. Yet, it will need a number of samples which is not enjoyed when dealing with core recovered from costs, and time. Several experts on rock mechanics propose multistage triaxial to solve conventional triaxial problems (Kovari & Tisa, 1975; Kim & Ko, 1979; Crawford & Wylie, 1987; and Pagoulatos, 2004). The difference between conventional triaxial to multistage triaxial only requires a single sample. So, it needs lower cost and shorter time than conventional triaxial. To get the validation of this method, we should compare the results from both triaxial method using failure criterion. In this research, the sample that being used is clay stone. and The evaluation of both methods are based on Mohr-Coulomb, Bieniawski I and II, and Hoek–Brown failure criterion. As the results from this research, multistage triaxial can be an efficient method to replace conventional method for determining clay stone strength. <br />