Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)

Improvement of Soft Soil for Subgrade Stabilized with Emulsified Asphalt and Tailing

Authors
T Hasyimi1, S Syahril1, *
1Department of Civil Engineering, Master Degree Program, Politeknik Negeri Bandung
*Corresponding author. Email: syahril@polban.ac.id
Corresponding Author
S Syahril
Available Online 23 November 2021.
DOI
10.2991/aer.k.211106.074How to use a DOI?
Keywords
Emulsified asphalt; tailing; stabilization; soft soil; Cbr
Abstract

Soil is one of the construction materials in civil works. Soft soil that has low bearing capacity becomes a problem in the construction process. To support the construction process, stable soil conditions are needed. The subgrade is the lowest layer of soil that serves as a place for laying the pavement layer and supports the road pavement construction above it. By stabilizing the soil, soil quality will increase. A more stable soil layer makes it able to distribute the load much better. The addition of emulsified asphalt and tailings to soft soil is intended to stabilize or improve the soil. One of the parameters to determine whether the bearing capacity of the soil is good or not is by knowing the CBR value. This study aims to analyze the change in CBR value with the addition of emulsified asphalt and tailings. In this study, the percentage of 8% emulsified asphalt and 5%, 6% and 7% tailings with curing of 0, 7, and 14 days were used. The tests in this study included soil physical properties, Compaction, Atterberg limit and CBR testing without immersion. The results showed that the use of emulsified asphalt and tailing increased the maximum dry density and reduced the optimum water content. It can reduce the Plasticity Index by 76.00% from soft soils. The CBR results show the optimum value of stabilization on a mixture of 8% emulsified asphalt and 6% tailings with a maximum dry of 1.67 gr/cm3, the optimum moisture content is 25.13%, and the CBR value is 7.10% with a curing time of 7 days. It can be concluded that the use of emulsified asphalt and tailings with an effective composition can be used as an alternative material to stabilize soft soil on road pavement structures.

Copyright
© 2021 The Authors. Published by Atlantis Press International B.V.
Open Access
This is an open access article under the CC BY-NC license.

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Volume Title
Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)
Series
Advances in Engineering Research
Publication Date
23 November 2021
ISBN
10.2991/aer.k.211106.074
ISSN
2352-5401
DOI
10.2991/aer.k.211106.074How to use a DOI?
Copyright
© 2021 The Authors. Published by Atlantis Press International B.V.
Open Access
This is an open access article under the CC BY-NC license.

Cite this article

TY  - CONF
AU  - T Hasyimi
AU  - S Syahril
PY  - 2021
DA  - 2021/11/23
TI  - Improvement of Soft Soil for Subgrade Stabilized with Emulsified Asphalt and Tailing
BT  - Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)
PB  - Atlantis Press
SP  - 472
EP  - 476
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.211106.074
DO  - 10.2991/aer.k.211106.074
ID  - Hasyimi2021
ER  -