Abstract
The functionality of pavement structure is significantly influenced by the subgrade properties. The saturation and desaturation of in-situ expansive subgrade contributes to pavement deteriorate through desiccation crack. To reduce these cracks, an expansive subgrade was polymerized and reinforced with sisal fibre, due to its promising prospect in pavement construction. This study investigated the cyclic crack restriction of polymerized expansive subgrade reinforced with 0.25%, 0.5%, 0.75%, and 1% of 30 mm sisal fibre. A series of zero swelling tests and resilient modulus tests were performed to explore the interactive effects of the polymer binder and sisal fibre on the expansive subgrade. The result revealed that the swelling stress of the expansive subgrade linearly decreases as the fibre content increases. Additionally, the resilient modulus of the treated subgrade increased as the fibre contents increases from 0% to 0.75% beyond which resilient strength decreased. The linear relationship between the increasing fibre content and the geopolymer binder mobilized the crack restrictions even at high cyclic stress and strain energy as the resilient modulus of the fabricated specimens increased. The test results confirmed that the polymer and clay minerals in the subgrade have a linear proportionality due to a complete polymerization reaction, as observed within the matrix of the fabricated specimens. The investigation confirmed that the coupling effects of geopolymer binder and sisal fibre significantly restricted cyclic cracks with an 88.1% decrease and 71.2% increase in swelling stress and resilient modulus, respectively. Whereas unreinforced polymerized subgrade failed to restrict the cracks at high cyclic stress and strain energy.
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References
Aneke FI, Nkwonta O (2021) Validation of semi-empirical models for the prediction of swelling stress for compacted unsaturated expansive soils. Civil Eng Architect 9(5):1640–1658. https://doi.org/10.13189/cea.2021.090533
Ikechukwu AF, Hassan MM (2022) Assessing the extent of pavement deterioration caused by subgrade volumetric movement through moisture infiltration. Int J Pavement Res Technol 15:676–692. https://doi.org/10.1007/s42947-021-00044-y
Aneke FI, Okonta FN, Ntuli F (2015) Geotechnical properties of marginal highway backfill stabilized with activated fly ash. PhD Thesis, Gauteng, South Africa, Department of Civil Engineering Science and Built Environment University of Johannesburg
Aneke FI, Mohamed MH, Azza M (2021) Resilient modulus and microstructure of unsaturated expansive subgrade stabilized with activated fly ash. Int J Geotech Eng 15(8):915–938. https://doi.org/10.1080/19386362.2019.1656919
Aneke FI, Mostafa MH, Moubarak A (2018) Behaviour of unsaturated soils for road pavement structure under cyclic loading. PhD Thesis, Department of Civil Engineering and Information Technology, Central University of Technology, Free State, South Africa
Frank IA, Mohamed MHM, Walid EK (2021) Pre-compression and capillarity effect of treated expansive subgrade subjected to compressive and tensile loadings. Case Stud Constr Mater 15:e00575. https://doi.org/10.1016/j.cscm.2021.e00575
Aneke FI, Onyelowe KC (2022) Applications of preloading pressure on expansive subgrade treated with nano-geopolymer binder for cyclic crack resistance. Nanotechnol Environ Eng. https://doi.org/10.1007/s41204-022-00250-4
Ikechukwu AF, Mostafa MMH (2021) Assessing the coupling effects of nanosized fly ash and precompression stress towards mitigating subgrade cracks mobilised by traffic loading. Nanotechnol Environ Eng 6:63. https://doi.org/10.1007/s41204-021-00157-6
Ganan P, Garbizu S, Llano-Ponte R, Mondragon I (2005) Surface modification of sisal fibers: effects on the mechanical and thermal properties of their epoxy composites. Polym Compos 26:121–127
ASTM D1140 (2017) Standard test method for standard test methods for determining the amount of material finer than 75-μm (no. 200), D4546-96. Annual Book of ASTM Standards
IS Part 41 (1997) Method of test for soils part 41 determination of soil swelling stress. Bureau of Indian Standards 2720, Part 40
Abdullah HH, Shahin MA, Sarker P (2019) Use of fly-ash geopolymer incorporating ground granulated slag for stabilisation of kaolin clay cured at ambient temperature. Geotech Geol Eng 37:721–740. https://doi.org/10.1007/s10706-018-0644-2
Suraj DK, Priyantha WJ, Sanjaya S, Branimir S (2020) Stabilization of highly expansive soils containing sulfate using metakaolin and fly ash based geopolymer modified with lime and gypsum. Transp Geotech 23:100327. https://doi.org/10.1016/j.trgeo.2020.100327
AASHTO T 307-99 (2007) Standard method of test for determining the resilient modulus of soils and aggregate materials. American Association of State Highway and Transportation Officials, Washington, DC
Ikechukwu AF, Mostafa MMH (2022) Swelling pressure prediction of compacted unsaturated expansive soils. Int J Eng Res Africa 59:119–134. https://doi.org/10.4028/p-eq1419
Rios S, Cristelo N, Viana da Fonseca A, Ferreira C (2016) Stiffness behaviour of soil stabilized with alkali-activated fly ash from small to large strains. Int J Geomech 17(3):04016087. https://doi.org/10.1061/(ASCE)GM.1943-5622.0000783
Acknowledgements
The author would like to acknowledge the Geotechnical and Materials Development Research Group (GMDRg) at the University of KwaZulu-Natal.
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Ikechukwu, A.F. (2024). Sustainable Stabilization of Reinforced Polymerized Subgrade Under Cyclic Loading. In: Hazarika, H., Haigh, S.K., Chaudhary, B., Murai, M., Manandhar, S. (eds) Sustainable Construction Resources in Geotechnical Engineering. IC-CREST 2023. Lecture Notes in Civil Engineering, vol 448. Springer, Singapore. https://doi.org/10.1007/978-981-99-9227-0_29
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DOI: https://doi.org/10.1007/978-981-99-9227-0_29
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