| Issue |
E3S Web Conf.
Volume 664, 2025
4th International Seminar of Science and Applied Technology: “Green Technology and AI-Driven Innovations in Sustainability Development and Environmental Conservation” (ISSAT 2025)
|
|
|---|---|---|
| Article Number | 08001 | |
| Number of page(s) | 8 | |
| Section | Soil Sciences | |
| DOI | https://doi.org/10.1051/e3sconf/202566408001 | |
| Published online | 20 November 2025 | |
Comprehensive study of subgrade stabilization with polyacrylamide (PAM) in Ciwaruga, Indonesia: Increased bearing capacity
1 Civil Engineering Department, Politeknik Negeri Bandung, Bandung 40559, Indonesia
2 Civil Engineering Department, Institut Teknologi Sepuluh Nopember, Surabaya 60117, Indonesia
3 School of Engineering and Applied Science, Kampala International University, Uganda, and Alzaiem Alazhari University, Sudan
* Corresponding author: dewi.amalia@polban.ac.id
This study aims to analyse the effect of 0.4% Polyacrylamide (PAM) stabilization on the California Bearing Ratio (CBR) values of subgrade soils in field conditions, as well as to formulate a practical method for implementing PAM-based soil stabilization. The research was conducted through both laboratory testing and direct field application, using a PAM concentration of 0.4% by the dry weight of the soil. The local soil sample, obtained from Ciwaruga Road, exhibited an Optimum Moisture Content (OMC) of 30.6% and a Maximum Dry Density (MDD) of 1.39 g/cm³. Initial CBR test results indicated un-soaked and soaked values of 3.72% and 2.81%, respectively. Following stabilization with 0.4% PAM, the laboratory CBR values increased to 8.15% (un-soaked) and 7.19% (soaked). Field implementation demonstrated a further increase in subgrade CBR, reaching 8.52% on the fifth day of curing. The findings of this study indicate that 0.4% PAM effectively enhances the load-bearing capacity of subgrade soils and has the potential to reduce the required pavement thickness in road construction.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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