Global Journal of Engineering and Technology Research (GJETR) · Research article · Open access
Performance of Stabilised Lateritic Soil with Citric Acid Cross Linked Cassava Starch Biopolymer for Rural Highway Infrastructure
Pam Yakubu Dalyop, Olumuyiwa Samson Aderinola, Tosin Samuel Ayeni
29 September 2026 · Vol. 2, Issue 9, pp. 569-578
DOI: 10.65150/EP-gjetr/V2E9/2026-14
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What is this article about?
This study investigated the geotechnical and pavement performance of lateritic subgrade soil stabilized with citric acid cross-linked cassava starch (CLSS) biopolymer for rural highway infrastructure. 5%, 10% by weight of starch).
Article at a glance
- Published
- 29 September 2026
- Volume / issue / pages
- Vol. 2, Issue 9, pp. 569-578
- ISSN
- 3051-3782 (online) · 3051-3774 (print)
- Licence
- CC BY 4.0 — free to read and reuse with attribution
- Peer review
- Double-blind, at least two independent reviewers
- Publisher
- EP Journals Group
Abstract
This study investigated the geotechnical and pavement performance of lateritic subgrade soil stabilized with citric acid cross-linked cassava starch (CLSS) biopolymer for rural highway infrastructure. Ten mix designations (S1-S10) were formulated by varying CLSS content (0-15% by dry weight of soil) and citric acid cross-linking concentration (5%, 7.5%, 10% by weight of starch). Laboratory test was carried out in accordance with BS 1377:1990 - involving Atterberg limits, Modified Proctor compaction, Unconfined Compressive Strength (UCS) at 7, 14, and 28 days curing. Also, California Bearing Ratio (soaked and un-soaked), and durability test were done under six wetting-drying (W-D) cycles. The results show that the optimum mix, S9 (15% CLSS, 7.5% citric acid cross-linking), reduced the Plasticity Index from 18.3% to 7.1% (a 61.2% reduction), the Free Swell Index from 42% to 14% (a 66.7% reduction), and swell from 2.4% to 0.3% (an 87.5% reduction). The 28-day UCS improved from 260 kPa (S1) to 1,480 kPa at S9, a 469.2% improvement, whilst soaked CBR increased from 9% to 103% (a 1,044.4% improvement). S9 retained 89.0% of its initial UCS after six W-D cycles with a mass loss of only 2.93%. These findings establish CLSS as a technically viable, environmentally sustainable, and good locally sourced stabilizer for lateritic subgrade soils in tropical rural highway construction.
Keywords: Lateritic soil, Citric acid cross-linked cassava starch (CLSS), Biopolymer, rural highway, Laboratory test.
Cite this article
Pam Yakubu Dalyop, Olumuyiwa Samson Aderinola, & Tosin Samuel Ayeni (2026). Performance of Stabilised Lateritic Soil with Citric Acid Cross Linked Cassava Starch Biopolymer for Rural Highway Infrastructure. Global Journal of Engineering and Technology Research, 2(9), 569-578. https://doi.org/10.65150/EP-gjetr/V2E9/2026-14
@article{Pam2026,
title = {Performance of Stabilised Lateritic Soil with Citric Acid Cross Linked Cassava Starch Biopolymer for Rural Highway Infrastructure},
author = {Pam Yakubu Dalyop and Olumuyiwa Samson Aderinola and Tosin Samuel Ayeni},
journal = {Global Journal of Engineering and Technology Research},
year = {2026},
volume = {2},
number = {9},
pages = {569-578},
doi = {10.65150/EP-gjetr/V2E9/2026-14},
url = {https://doi.org/10.65150/EP-gjetr/V2E9/2026-14}
}Questions about this article
Who wrote this article?
Pam Yakubu Dalyop, Olumuyiwa Samson Aderinola, Tosin Samuel Ayeni.
Where and when was it published?
In Global Journal of Engineering and Technology Research, Volume 2, Issue 9, pages 569-578, published by EP Journals Group on 29 September 2026.
Is this article free to read?
Yes. It is open access under a Creative Commons Attribution 4.0 (CC BY 4.0) licence, so anyone can read, share and reuse it with attribution.
What is the DOI of this article?
10.65150/EP-gjetr/V2E9/2026-14 (https://doi.org/10.65150/EP-gjetr/V2E9/2026-14).
How do I cite this article?
APA: Pam Yakubu Dalyop, Olumuyiwa Samson Aderinola, & Tosin Samuel Ayeni (2026). Performance of Stabilised Lateritic Soil with Citric Acid Cross Linked Cassava Starch Biopolymer for Rural Highway Infrastructure. Global Journal of Engineering and Technology Research, 2(9), 569-578. https://doi.org/10.65150/EP-gjetr/V2E9/2026-14
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