The Effect of Adding Lime and Phosphoric Acid for Soft Soil Improvement on Unconfined Compressive Strength Value

DOI

10.2991/aer.k.211106.035How to use a DOI?

Keywords

stabilization; soft soil; lime; phosphoric acid; compressive strength

Abstract

In construction design, several soil parameters are needed, especially the value of unconfined compressive strength. The value of unconfined compressive strength aims to determine the strength of soil when it receives pressure. The test that is often used is Unconfined Compressive Strength (UCS) which is carried out in the laboratory. This research uses stabilization method by using lime material (K) and phosphoric acid (AF) for increasing the soil parameter. Lime material is easy to react with the groundwater, so it can change the soil parameters. In addition, the lime material has a good adhesion so that it can overcome the soil softness, while phosphoric acid is expected as a binder because the characteristic of phosphoric acid is easy to react to. In this research, three variants are used with the percentage of lime material as follows: 6%. 8%, 10%, and 12%. Meanwhile, for the phosphoric acid, it is 5% for all variants. The purpose of this study is to obtain the optimum mixed variant that can improve soil parameters, especially soft soils. The results obtained from this study are decreasing the value of plasticity index (PI) from soft soil. Soft soil is classified as soft soil with a very high plasticity index (PI) value. In addition, there is an increase for each variant, and it reaches the optimum value in variant 3 as seen from the results of the unconfined compressive strength. Therefore, it can be concluded that the addition of lime and phosphoric acid, which is stabilized on soft soil, can improve the parameters of the soft soil.

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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TY  - CONF
AU  - A Marques
AU  - S Syahril
PY  - 2021
DA  - 2021/11/23
TI  - The Effect of Adding Lime and Phosphoric Acid for Soft Soil Improvement on Unconfined Compressive Strength Value
BT  - Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)
PB  - Atlantis Press
SP  - 225
EP  - 230
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.211106.035
DO  - 10.2991/aer.k.211106.035
ID  - Marques2021
ER  -