Biopolymer as Environmentally Friendly Reinforcement to Overcome Cracked Soil Problems on Expansive Soil:

A Case Study at Karanggede – Juwangi Road

DOI

10.2991/aer.k.211106.042How to use a DOI?

Keywords

Expansive soil; biopolymer; cyclic drying; crack soil; compressive strength

Abstract

The distribution of soft and expansive soil that is often found in Indonesia often causes problems in the structure above it. To build the infrastructure on expansive soil, it is necessary to improve the subgrade. One method to improve soil is to stabilize it by using biopolymers. Biopolymer was chosen because it is more environmentally friendly than the use of cement as soil stabilization. In this study, Xanthan Gum (XG) biopolymer was used, with concentrations of 1%, 2%, and 4%. Testing was carried out experimentally in the form of testing physical and mechanical properties as well as cyclic drying testing. From the results of the analysis, the XG biopolymer can reduce the number and width of cracks after experiencing a drastic reduction in water content. A positive impact was also obtained on the mechanical analysis with the addition of biopolymers that could increase the compressive strength of the soil up to 432% and the shear strength of the soil up to 482%.

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  - Bagus Guritno
AU  - Dewi Amalia
AU  - Iin Karnisah
AU  - Apip Pudin
PY  - 2021
DA  - 2021/11/23
TI  - Biopolymer as Environmentally Friendly Reinforcement to Overcome Cracked Soil Problems on Expansive Soil:
BT  - Proceedings of the 2nd International Seminar of Science and Applied Technology (ISSAT 2021)
PB  - Atlantis Press
SP  - 264
EP  - 270
SN  - 2352-5401
UR  - https://doi.org/10.2991/aer.k.211106.042
DO  - 10.2991/aer.k.211106.042
ID  - Guritno2021
ER  -