Reliability Analysis of Polyvinyl Alcohol Fiber-Reinforced Soft Subgrade Soil Treated with Lime and Alkali Activated Stabilizer: A Comparative Study
Publication: Geo-Congress 2023
ABSTRACT
The present research has made an effort to support the subgrade strength performance of polyvinyl alcohol fiber-reinforced (PAF) soft soil stabilized with an alkali-activated stabilizer (AAS). The research compares the subgrade stiffness parameters (resilient modulus, penetration, and flexural resistance) between hydrated lime and alkaline stabilizer mixed PAF-soil at various slag/bagasse ash (BA) proportions. The influences of slag, BA, and PAF changing percentages in the AAS-soil matrix on the California Bearing ratio (CBR) and soil-beam flexural strength (Sf) are evaluated. The study also proposes an optimum dosage of slag-BA-PAF in alkaline stabilized soft subgrade soil. It is observed that PAF-AAS soil exhibits higher interfacial interactions and inter-bonding density than lime-PAF-soil under low tensile cracking. The combined PAF (0.6%) with 20% BA replacement with slag in the alkaline stabilizer strengthens the CBR and flexural strength by around 45% over lime soil-fiber mixtures. Moreover, a detailed reliability index (β) was also conducted to evaluate further the impact of uncertainties in the PAF-AAS-soil mixture on subgrade performance. The research study shows that the higher percentage of PAF-slag in a BA-based AAS mixture can substantially improve the stiffness and durability of soft subgrade soil.
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REFERENCES
AASHTO. (1993). Guide for design of pavement structures AASHTO-Washington, DC, 1, 1–18.
Amadi, A. A. (2014). “Enhancing durability of quarry fines modified black cotton soil subgrade with cement kiln dust stabilization.” Transportation Geotechnics, Elsevier Ltd, 1(1), 55–61.
Mohammed, A., Moghal, A. A. B., Basha, B. M., and Moghal, A. A. B. (2021). “Carbon Footprint Analysis on the Expansive Soil Stabilization Techniques.” IFCEE ASCE, 213–222.
Rajasekharan, G., and Narsimha Rao, S. (1997). “Lime Stabilization Technique for the Improvement of Marine Clay.” Soil and Foundation, 37(2), 97–104.
GuhaRay, A., and Baidya, D. K. (2015). “Reliability-based analysis of cantilever sheet pile walls backfilled with different soil types using the finite-element approach.” International Journal of Geomechanics, 15(6), 1–11.
Kar, A. (2013). Characterizations of Concretes with Alkali-Activated Binder and Correlating Their Properties From Micro-to-specimen Level. Dissertation submitted to the Benjamin M. Statler College of Engg., Mineral in partial fulfillment of Doctor. West Virginia University.
Liu, Y., Zhu, W., and Yang, E. H. (2016). “Alkali-activated blast-furnace slag incorporating incinerator fly ash as a potential binder.” Construction and Building Material, 112.
Mahedi, M., Cetin, B., and White, D. J. (2020). “Cement, Lime, and Fly Ashes in Stabilizing Expansive Soils: Performance Evaluation and Comparison.” Journal of Materials in Civil Engineering, 32(7), 1–16.
Moghal, A. A. B., Chittoori, B. C. S., and Basha, B. M. (2018). “Effect of fibre reinforcement on CBR behaviour of lime-blended expansive soils: reliability approach.” Road Materials and Pavement Design, Taylor & Francis, 19(3), 690–709.
Moghal, A. A. B., Chittoori, B. C. S., Basha, B. M., and Al-Shamrani, M. A. (2017). “Target Reliability Approach to Study the Effect of Fiber Reinforcement on UCS Behavior of Lime Treated Semiarid Soil.” Journal of Materials in Civil Engineering, 29(6), 04017014.
Rios, S., Ramos, C., Fonseca, D., Cruz, N., and Rodrigues, C. (2016). “Colombian Soil Stabilized with Geopolymers for Low Cost Roads.” Procedia Engineering, Elsevier, 143, 1392–1400.
Sudhakaran, S. P., Sharma, A. K., and Kolathayar, S. (2018). “Soil stabilization using bottom ash and areca fiber: Experimental investigations and reliability analysis.” Journal of Materials in Civil Engineering, 30(8), 1–10.
Syed, M., Ahuja, M., Jambholkar, A. R., and GuhaRay, A. (2022). “Laboratory Investigation on Fiber-Reinforced Expansive Subgrade Soil Stabilized with Alkali Activated Binder: A Reliability-Based Perspective.” Geo-Congress 2022, 241–250.
Syed, M., and GuhaRay, A. (2020a). “Effect of Fiber Reinforcement on Mechanical Behavior of Alkali-Activated Binder-Treated Expansive Soil : Reliability-Based Approach.” International journal of Geomechanics, 20, 1–18.
Syed, M., and GuhaRay, A. (2020b). “Effect of natural fiber reinforcement on strength response of alkali activated binder treated expansive soil: Experimental investigation and reliability analysis.” Construction and Building Materials, Elsevier Ltd, 12(10), 121743.
Syed, M., GuhaRay, A., and Garg, A. (2021). “Performance evaluation of lime, cement and alkali-activated binder in fiber-reinforced expansive subgrade soil: A comparative study.” Journal of Testing and Evaluation, 51(1).
Tang, C.-S., Shi, B., Li, J., Wang, D.-Y., and Cui, Y.-J. (2016). “Tensile Strength of Fiber-Reinforced Soil.” Journal of Materials in Civil Engineering, 28(7), 04016031.
Zhang, M., Guo, H., El-Korchi, T., Zhang, G., and Tao, M. (2013). “Experimental feasibility study of geopolymer as the next-generation soil stabilizer.” Construction and Building Material, 47.
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Published online: Mar 23, 2023
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