Reliability analysis of polyvinyl alcohol fiber-reinforced soft subgrade soil treated with lime and alkali activated stabilizer: A comparative study

Mazhar Syed; Arif Ali Baig Moghal; Bhaskar Chittoori

doi:10.1061/9780784484661.044

Reliability analysis of polyvinyl alcohol fiber-reinforced soft subgrade soil treated with lime and alkali activated stabilizer: A comparative study

Mazhar Syed
, Arif Ali Baig Moghal
, Bhaskar Chittoori^*

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

7 Scopus citations

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.

Original language	English
Title of host publication	Geotechnical Special Publication
Editors	Ellen Rathje, Brina M. Montoya, Mark H. Wayne
Publisher	American Society of Civil Engineers (ASCE)
Pages	422-432
Number of pages	11
Edition	GSP 339
ISBN (Electronic)	9780784484654, 9780784484661, 9780784484678, 9780784484685, 9780784484692, 9780784484708
DOIs	https://doi.org/10.1061/9780784484661.044
State	Published - 2023
Externally published	Yes
Event	2023 Geo-Congress: Sustainable Infrastructure Solutions from the Ground Up - Soil Improvement, Geoenvironmental, and Sustainability - Los Angeles, United States Duration: 26 Mar 2023 → 29 Mar 2023

Publication series

Name	Geotechnical Special Publication
Number	GSP 339
Volume	2023-March
ISSN (Print)	0895-0563

Conference

Conference	2023 Geo-Congress: Sustainable Infrastructure Solutions from the Ground Up - Soil Improvement, Geoenvironmental, and Sustainability
Country/Territory	United States
City	Los Angeles
Period	26/03/23 → 29/03/23

Bibliographical note

Publisher Copyright:
© 2023 American Society of Civil Engineers (ASCE). All rights reserved.

ASJC Scopus subject areas

Civil and Structural Engineering
Architecture
Building and Construction
Geotechnical Engineering and Engineering Geology

Access to Document

10.1061/9780784484661.044

Cite this

Syed, M., Moghal, A. A. B., & Chittoori, B. (2023). Reliability analysis of polyvinyl alcohol fiber-reinforced soft subgrade soil treated with lime and alkali activated stabilizer: A comparative study. In E. Rathje, B. M. Montoya, & M. H. Wayne (Eds.), Geotechnical Special Publication (GSP 339 ed., pp. 422-432). (Geotechnical Special Publication; Vol. 2023-March, No. GSP 339). American Society of Civil Engineers (ASCE). https://doi.org/10.1061/9780784484661.044

Syed, Mazhar ; Moghal, Arif Ali Baig ; Chittoori, Bhaskar. / Reliability analysis of polyvinyl alcohol fiber-reinforced soft subgrade soil treated with lime and alkali activated stabilizer : A comparative study. Geotechnical Special Publication. editor / Ellen Rathje ; Brina M. Montoya ; Mark H. Wayne. GSP 339. ed. American Society of Civil Engineers (ASCE), 2023. pp. 422-432 (Geotechnical Special Publication; GSP 339).

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title = "Reliability analysis of polyvinyl alcohol fiber-reinforced soft subgrade soil treated with lime and alkali activated stabilizer: A comparative study",

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.",

author = "Mazhar Syed and Moghal, \{Arif Ali Baig\} and Bhaskar Chittoori",

note = "Publisher Copyright: {\textcopyright} 2023 American Society of Civil Engineers (ASCE). All rights reserved.; 2023 Geo-Congress: Sustainable Infrastructure Solutions from the Ground Up - Soil Improvement, Geoenvironmental, and Sustainability ; Conference date: 26-03-2023 Through 29-03-2023",

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Syed, M, Moghal, AAB & Chittoori, B 2023, Reliability analysis of polyvinyl alcohol fiber-reinforced soft subgrade soil treated with lime and alkali activated stabilizer: A comparative study. in E Rathje, BM Montoya & MH Wayne (eds), Geotechnical Special Publication. GSP 339 edn, Geotechnical Special Publication, no. GSP 339, vol. 2023-March, American Society of Civil Engineers (ASCE), pp. 422-432, 2023 Geo-Congress: Sustainable Infrastructure Solutions from the Ground Up - Soil Improvement, Geoenvironmental, and Sustainability, Los Angeles, United States, 26/03/23. https://doi.org/10.1061/9780784484661.044

Reliability analysis of polyvinyl alcohol fiber-reinforced soft subgrade soil treated with lime and alkali activated stabilizer: A comparative study. / Syed, Mazhar; Moghal, Arif Ali Baig; Chittoori, Bhaskar.
Geotechnical Special Publication. ed. / Ellen Rathje; Brina M. Montoya; Mark H. Wayne. GSP 339. ed. American Society of Civil Engineers (ASCE), 2023. p. 422-432 (Geotechnical Special Publication; Vol. 2023-March, No. GSP 339).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - 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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Syed M, Moghal AAB, Chittoori B. Reliability analysis of polyvinyl alcohol fiber-reinforced soft subgrade soil treated with lime and alkali activated stabilizer: A comparative study. In Rathje E, Montoya BM, Wayne MH, editors, Geotechnical Special Publication. GSP 339 ed. American Society of Civil Engineers (ASCE). 2023. p. 422-432. (Geotechnical Special Publication; GSP 339). doi: 10.1061/9780784484661.044

Reliability analysis of polyvinyl alcohol fiber-reinforced soft subgrade soil treated with lime and alkali activated stabilizer: A comparative study

Abstract

Publication series

Conference

Bibliographical note

ASJC Scopus subject areas

Access to Document

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Cite this