THE IMPACT OF WATER SUBMERGENCE AND HIGH PRESSURE PISTON LOADING REPETITION ON SOAKED-CBR VALUE OF SUBGRADE AND SUB-BASE LAYERS

Authors

  • Indra Nurtjahjaningtyas Faculty of Engineering, University of Jember, Jember, Indonesia. 2Departement of Civil Engineering, Sepuluh November Institute of Technology, Surabaya, Indonesia
  • Indrasurya B. Mochtar Departement of Civil Engineering, Sepuluh November Institute of Technology, Surabaya, Indonesia
  • Noor Endah Mochtar Departement of Civil Engineering, Sepuluh November Institute of Technology, Surabaya, Indonesia

Keywords:

Cyclic load, Heavy vehicle, Pavement deterioration, Repetition number, Soaked-CBR, Water submergence

Abstract

Road pavement deterioration is a common problem that occurs in many countries. Many
researchers found that the cause of deterioration is water submergence, heavy vehicle tire pressure, and cyclic
load. From those results, it is known that there is no research on road pavement deterioration caused by
combination of water submergence and heavy vehicle repetition that measured based on the soaked-CBR
value. Therefore, this research was conducted to find the answers. Material used in this study was selected fill
material (material-1) and aggregate B (material-2). The study was conducted in 2 steps. In Step-1, six
samples for each of materials were compacted at their OMC values. Afterwards, 3 of 6 samples for each of
materials were soaked; the remaining were made in un-submerged condition. In Step 2, cyclic load with
pressures of P=50psi, 100psi, and 150psi were applied; repetition number of cyclic load for each pressure
applied was n=0, 300, 600, 900, 1200, 1500. Soaked-CBR value was determined every time finish applying
at each the cyclic load. The results show that soaked-CBR value of material-1 is always lower than of
material-2, in all condition. Decrement of soaked-CBR value of material-2 in submerged condition caused by
cycle loading pressure is more significant compared to the one of material-1. Soaked-CBR value of material-
2 is affected by water submergence regardless the loading pressure and number of cyclic repetitions applied.
Grain size distribution of materials has significantly affected to change of their soaked-CBR values when
cycle loading applied especially for material in submerged condition.

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Published

2021-01-28

How to Cite

Indra Nurtjahjaningtyas, Indrasurya B. Mochtar, & Noor Endah Mochtar. (2021). THE IMPACT OF WATER SUBMERGENCE AND HIGH PRESSURE PISTON LOADING REPETITION ON SOAKED-CBR VALUE OF SUBGRADE AND SUB-BASE LAYERS. GEOMATE Journal, 20(77), 181–188. Retrieved from https://geomatejournal.com/geomate/article/view/442