TY - JOUR AU - Indra Nurtjahjaningtyas, AU - Indrasurya B. Mochtar, AU - Noor Endah Mochtar, PY - 2021/01/28 Y2 - 2024/03/28 TI - THE IMPACT OF WATER SUBMERGENCE AND HIGH PRESSURE PISTON LOADING REPETITION ON SOAKED-CBR VALUE OF SUBGRADE AND SUB-BASE LAYERS JF - GEOMATE Journal JA - INTERNATIONAL JOURNAL OF GEOMATE VL - 20 IS - 77 SE - Articles DO - UR - https://geomatejournal.com/geomate/article/view/442 SP - 181-188 AB - <p>Road pavement deterioration is a common problem that occurs in many countries. Many<br>researchers found that the cause of deterioration is water submergence, heavy vehicle tire pressure, and cyclic<br>load. From those results, it is known that there is no research on road pavement deterioration caused by<br>combination of water submergence and heavy vehicle repetition that measured based on the soaked-CBR<br>value. Therefore, this research was conducted to find the answers. Material used in this study was selected fill<br>material (material-1) and aggregate B (material-2). The study was conducted in 2 steps. In Step-1, six<br>samples for each of materials were compacted at their OMC values. Afterwards, 3 of 6 samples for each of<br>materials were soaked; the remaining were made in un-submerged condition. In Step 2, cyclic load with<br>pressures of P=50psi, 100psi, and 150psi were applied; repetition number of cyclic load for each pressure<br>applied was n=0, 300, 600, 900, 1200, 1500. Soaked-CBR value was determined every time finish applying<br>at each the cyclic load. The results show that soaked-CBR value of material-1 is always lower than of<br>material-2, in all condition. Decrement of soaked-CBR value of material-2 in submerged condition caused by<br>cycle loading pressure is more significant compared to the one of material-1. Soaked-CBR value of material-<br>2 is affected by water submergence regardless the loading pressure and number of cyclic repetitions applied.<br>Grain size distribution of materials has significantly affected to change of their soaked-CBR values when<br>cycle loading applied especially for material in submerged condition.</p> ER -