Use of a Biopolymer for Road Pavement Subgrade

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dc.authoridDEMIR, Suleyman/0000-0002-6881-1155|YILDIZ, Ozgur/0000-0002-3684-3750|Akbulut, Nurullah/0000-0002-4280-1581
dc.contributor.authorCabalar, Ali Firat
dc.contributor.authorAkbulut, Nurullah
dc.contributor.authorDemir, Suleyman
dc.contributor.authorYildiz, Ozgur
dc.date.accessioned2025-10-24T18:09:46Z
dc.date.available2025-10-24T18:09:46Z
dc.date.issued2023
dc.departmentMalatya Turgut Özal Üniversitesi
dc.description.abstractThis paper presents an extensive series of laboratory works and a prediction model on the design of a road pavement subgrade with Xanthan Gum (XG) biopolymer. The experimental works were carried out using mixtures of conventional aggregate for road pavement construction and XG at the ratios of 0%, 1%, 2%, and 5%, by dry weight. Unconfined compressive strength (UCS) and California bearing ratio (CBR) tests were conducted during the experimental works at the end of the various curing periods (4, 8, 16, and 32 days). An example of an improvement in the UCS values for a specimen with 5% XG addition tested at the end of 4-daycuring yields about a 200% increment by the end of a 32-daycuring. The CBR values of clean aggregates were found to be increased by about 300% by 5% XG addition for all curing periods applied. Furthermore, the energy absorption capacity of the aggregates was observed to be increased significantly by both XG inclusion and curing period. Moreover, scaled conjugate gradient (SCG) training algorithm-based models developed for the prediction of CBR and UCS test results displayed a very high estimation performance with the regression coefficients of R-2 = 0.967 and R-2 = 0.987, respectively. Evidently, XG biopolymer is provably of use as an alternative inclusion in road pavement subgrades constructed with conventional aggregates.
dc.identifier.doi10.3390/su15108231
dc.identifier.issn2071-1050
dc.identifier.issue10
dc.identifier.urihttps://doi.org/10.3390/su15108231
dc.identifier.urihttps://hdl.handle.net/20.500.12899/3824
dc.identifier.volume15
dc.identifier.wosWOS:000997589400001
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.language.isoen
dc.publisherMdpi
dc.relation.ispartofSustainability
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_20251023
dc.subjectbiopolymer; aggregate; unconfined compressive strength; California bearing ratio; prediction model
dc.titleUse of a Biopolymer for Road Pavement Subgrade
dc.typeArticle

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