Reinforcement of Soft Soil on Slope Using Volcanic Ash and Phosphoric Acid Stabilization for Subgrade of Rigid Pavement

DOI

10.2991/aer.k.201221.076How to use a DOI?

Keywords

Stabilization, volcanic ash, phosphoric acid, unconfined compression strength

Abstract

In infrastructure, soil has an important role to support the construction. The soil function as a basic foothold and accepts all loads caused by construction. İn the implementation of road construction, its often found the condition of the soil with low bearing capacity, especially if the road construction in on slopes that are prone to landslides. One way to improve the carrying capacity of soils is stabilization. İn this research will use volcanic ash and phosphoric acid for the mixture of soil stabilization. Volcanic ash is a pozzolanic material and contains a lot of silica. Volcanic ash has tiny particle size to cover cavities in the soil. Phosphoric acid can cause chemical reactions due to soil minerals, then it will form new compounds that bond the structure of soil minerals and form a hard layer that is insoluble in water. The purpose of this research is to determine the effect of addition volcanic ash and phosphoric acid as stabilized materials for rigid pavement subgrade and to increase the carrying capacity of native soil after stabilization based on the Unconfined Compression Strength (UCS) test. The test will be carried out of index properties and engineering properties test. The volcanic ash variants used are 6%, 8%, and 10%, while the phosphoric acid is 10% for all variants. From this research, it is proofed that the use of volcanic ash and phosphoric acid as stabilizing materials, can increase the carrying capacity of the slope, which is seen on the Unconfined Compression Strength (UCS) test.

Copyright

© 2020, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - S Syahril
AU  - A Suyono
AU  - I R Prajudi
PY  - 2020
DA  - 2020/12/22
TI  - Reinforcement of Soft Soil on Slope Using Volcanic Ash and Phosphoric Acid Stabilization for Subgrade of Rigid Pavement
BT  - Proceedings of the International Seminar of Science and Applied Technology (ISSAT 2020)
PB  - Atlantis Press
SP  - 462
EP  - 466
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.201221.076
DO  - 10.2991/aer.k.201221.076
ID  - Syahril2020
ER  -