Open AccessThe use of natural fiber from oil palm empty fruit bunches for soft soil stabilization
Author(s) -
Yulian Firmana Arifin,
Misnawati Misnawati,
Ellyn Normelani
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/669/1/012026
Subject(s) - fiber , california bearing ratio , compaction , palm oil , shear strength (soil) , materials science , bulk density , composite material , environmental science , geotechnical engineering , soil water , soil science , engineering , agroforestry
The use of natural fiber as a construction material, especially soil stabilization continues to grow. This paper focuses on the use of natural fiber to increase shear strength and bearing capacity of soft soil. The fiber used is obtained from oil palm empty fruit bunches (EFB) as a by-product of palm oil mills. Soft soil mixed with fiber with a composition of 5, 6, 7, and 8% fiber in the mixture. Some tests such as the standard compaction test, unconfined compression test, laboratory vane test, and California Bearing Ratio test were carried out. The results show that the soft soil used in this study can be compacted at fiber content higher than 5%. The maximum density obtained is 0.92 g/cm 3 at 7% fiber content. The compacted soil-EFB mixtures successfully increase the shear strength and bearing capacity of the soft soil shown by the results of the UCT, laboratory vane, and CBR tests. The soil consistency changes from soft to medium soil. The maximum q u , s u , and CBR obtained are 0.8 kg/cm 2 , 0.65 kg/cm 2 , and 6%, respectively at optimum fiber content of 6 to 7%.