Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil: An Experimental Investigation and Numerical Modeling

Mazhar Syed; Yash V. Kasat; Gaurav B. Sarda; Anasua GuhaRay

doi:10.1007/978-981-16-1831-4_18

Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil: An Experimental Investigation and Numerical Modeling

Mazhar Syed
, Yash V. Kasat
, Gaurav B. Sarda
, Anasua GuhaRay^*

^*Corresponding author for this work

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

3 Scopus citations

Abstract

Volumetric variations in expansive black cotton soil (BCS) lead to low strength bearing ratio with a high degree of compressibility. This vulnerable behavior can be controlled by adding cementitious additives to the soil. In the present study, an experimental program is undertaken to investigate the effects of fiber reinforcement in alkali-activated binder (AAB) treated expansive soil. Two different types of fibers—artificial polypropylene fiber (PF) and chemically treated naturally available coir fiber (TCF) are used. Two different lengths (12.0 and 25.0 mm) and two fiber dosages (i.e., 0.5 and 1.0% by dry weight of soil) are considered for comparison. AAB is prepared by combining an alkaline solution (a mixture of sodium silicate and sodium hydroxide) with aluminosilicate precursors (Class F fly ash) at a 0.4 water to solids ratio. This study analyzes the mechanism of bonding interaction for both fibers reinforced AAB treated soil using stereomicroscopic, Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscope (SEM) analysis. The unconfined compressive strength (UCS), split tensile strength (STS), and flexural tests for PF-AAB-soil and TCF-AAB-soil are carried out. A 3-point bending test is conducted to investigate the flexural behavior of AAB-treated soil reinforced with PF and TCF after 28 days of curing. The influences of varying fiber dosages in AAB show a significant improvement in shear, tensile, and flexural strength properties of both fiber-reinforced AAB treated soil. The geomechanical results also show that PF reinforced soil attains a higher compressive shear and bonding resistance compared to TCF reinforced soil. Furthermore, numerical analysis using commercially available finite element software is carried out to compare the PF’s flexural failure patterns, and the TCF reinforced soil beam with the experimental results.

Original language	English
Title of host publication	Ground Improvement and Reinforced Soil Structures - Proceedings of Indian Geotechnical Conference, 2020
Editors	C. N. Satyanarayana Reddy, Sireesh Saride, Sumanta Haldar
Publisher	Springer Science and Business Media Deutschland GmbH
Pages	193-204
Number of pages	12
ISBN (Print)	9789811618307
DOIs	https://doi.org/10.1007/978-981-16-1831-4_18
State	Published - 2022
Externally published	Yes
Event	Indian Geotechnical Conference, IGC 2020 - Virtual, Online Duration: 17 Dec 2020 → 19 Dec 2020

Publication series

Name	Lecture Notes in Civil Engineering
Volume	152
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	Indian Geotechnical Conference, IGC 2020
City	Virtual, Online
Period	17/12/20 → 19/12/20

Bibliographical note

Publisher Copyright:
© 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

Keywords

Alkali activated binders
Expansive clayey soil
Fibers
Microstructure
Numerical analysis

ASJC Scopus subject areas

Civil and Structural Engineering

Access to Document

10.1007/978-981-16-1831-4_18

Cite this

Syed, M., Kasat, Y. V., Sarda, G. B., & GuhaRay, A. (2022). Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil: An Experimental Investigation and Numerical Modeling. In C. N. Satyanarayana Reddy, S. Saride, & S. Haldar (Eds.), Ground Improvement and Reinforced Soil Structures - Proceedings of Indian Geotechnical Conference, 2020 (pp. 193-204). (Lecture Notes in Civil Engineering; Vol. 152). Springer Science and Business Media Deutschland GmbH. https://doi.org/10.1007/978-981-16-1831-4_18

Syed, Mazhar ; Kasat, Yash V. ; Sarda, Gaurav B. et al. / Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil : An Experimental Investigation and Numerical Modeling. Ground Improvement and Reinforced Soil Structures - Proceedings of Indian Geotechnical Conference, 2020. editor / C. N. Satyanarayana Reddy ; Sireesh Saride ; Sumanta Haldar. Springer Science and Business Media Deutschland GmbH, 2022. pp. 193-204 (Lecture Notes in Civil Engineering).

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title = "Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil: An Experimental Investigation and Numerical Modeling",

abstract = "Volumetric variations in expansive black cotton soil (BCS) lead to low strength bearing ratio with a high degree of compressibility. This vulnerable behavior can be controlled by adding cementitious additives to the soil. In the present study, an experimental program is undertaken to investigate the effects of fiber reinforcement in alkali-activated binder (AAB) treated expansive soil. Two different types of fibers—artificial polypropylene fiber (PF) and chemically treated naturally available coir fiber (TCF) are used. Two different lengths (12.0 and 25.0 mm) and two fiber dosages (i.e., 0.5 and 1.0\% by dry weight of soil) are considered for comparison. AAB is prepared by combining an alkaline solution (a mixture of sodium silicate and sodium hydroxide) with aluminosilicate precursors (Class F fly ash) at a 0.4 water to solids ratio. This study analyzes the mechanism of bonding interaction for both fibers reinforced AAB treated soil using stereomicroscopic, Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscope (SEM) analysis. The unconfined compressive strength (UCS), split tensile strength (STS), and flexural tests for PF-AAB-soil and TCF-AAB-soil are carried out. A 3-point bending test is conducted to investigate the flexural behavior of AAB-treated soil reinforced with PF and TCF after 28 days of curing. The influences of varying fiber dosages in AAB show a significant improvement in shear, tensile, and flexural strength properties of both fiber-reinforced AAB treated soil. The geomechanical results also show that PF reinforced soil attains a higher compressive shear and bonding resistance compared to TCF reinforced soil. Furthermore, numerical analysis using commercially available finite element software is carried out to compare the PF{\textquoteright}s flexural failure patterns, and the TCF reinforced soil beam with the experimental results.",

keywords = "Alkali activated binders, Expansive clayey soil, Fibers, Microstructure, Numerical analysis",

author = "Mazhar Syed and Kasat, \{Yash V.\} and Sarda, \{Gaurav B.\} and Anasua GuhaRay",

note = "Publisher Copyright: {\textcopyright} 2022, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.; Indian Geotechnical Conference, IGC 2020 ; Conference date: 17-12-2020 Through 19-12-2020",

year = "2022",

doi = "10.1007/978-981-16-1831-4\_18",

language = "English",

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booktitle = "Ground Improvement and Reinforced Soil Structures - Proceedings of Indian Geotechnical Conference, 2020",

address = "Germany",

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Syed, M, Kasat, YV, Sarda, GB & GuhaRay, A 2022, Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil: An Experimental Investigation and Numerical Modeling. in CN Satyanarayana Reddy, S Saride & S Haldar (eds), Ground Improvement and Reinforced Soil Structures - Proceedings of Indian Geotechnical Conference, 2020. Lecture Notes in Civil Engineering, vol. 152, Springer Science and Business Media Deutschland GmbH, pp. 193-204, Indian Geotechnical Conference, IGC 2020, Virtual, Online, 17/12/20. https://doi.org/10.1007/978-981-16-1831-4_18

Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil: An Experimental Investigation and Numerical Modeling. / Syed, Mazhar; Kasat, Yash V.; Sarda, Gaurav B. et al.
Ground Improvement and Reinforced Soil Structures - Proceedings of Indian Geotechnical Conference, 2020. ed. / C. N. Satyanarayana Reddy; Sireesh Saride; Sumanta Haldar. Springer Science and Business Media Deutschland GmbH, 2022. p. 193-204 (Lecture Notes in Civil Engineering; Vol. 152).

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

TY - GEN

T1 - Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil

T2 - Indian Geotechnical Conference, IGC 2020

AU - Syed, Mazhar

AU - Kasat, Yash V.

AU - Sarda, Gaurav B.

AU - GuhaRay, Anasua

PY - 2022

Y1 - 2022

N2 - Volumetric variations in expansive black cotton soil (BCS) lead to low strength bearing ratio with a high degree of compressibility. This vulnerable behavior can be controlled by adding cementitious additives to the soil. In the present study, an experimental program is undertaken to investigate the effects of fiber reinforcement in alkali-activated binder (AAB) treated expansive soil. Two different types of fibers—artificial polypropylene fiber (PF) and chemically treated naturally available coir fiber (TCF) are used. Two different lengths (12.0 and 25.0 mm) and two fiber dosages (i.e., 0.5 and 1.0% by dry weight of soil) are considered for comparison. AAB is prepared by combining an alkaline solution (a mixture of sodium silicate and sodium hydroxide) with aluminosilicate precursors (Class F fly ash) at a 0.4 water to solids ratio. This study analyzes the mechanism of bonding interaction for both fibers reinforced AAB treated soil using stereomicroscopic, Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscope (SEM) analysis. The unconfined compressive strength (UCS), split tensile strength (STS), and flexural tests for PF-AAB-soil and TCF-AAB-soil are carried out. A 3-point bending test is conducted to investigate the flexural behavior of AAB-treated soil reinforced with PF and TCF after 28 days of curing. The influences of varying fiber dosages in AAB show a significant improvement in shear, tensile, and flexural strength properties of both fiber-reinforced AAB treated soil. The geomechanical results also show that PF reinforced soil attains a higher compressive shear and bonding resistance compared to TCF reinforced soil. Furthermore, numerical analysis using commercially available finite element software is carried out to compare the PF’s flexural failure patterns, and the TCF reinforced soil beam with the experimental results.

AB - Volumetric variations in expansive black cotton soil (BCS) lead to low strength bearing ratio with a high degree of compressibility. This vulnerable behavior can be controlled by adding cementitious additives to the soil. In the present study, an experimental program is undertaken to investigate the effects of fiber reinforcement in alkali-activated binder (AAB) treated expansive soil. Two different types of fibers—artificial polypropylene fiber (PF) and chemically treated naturally available coir fiber (TCF) are used. Two different lengths (12.0 and 25.0 mm) and two fiber dosages (i.e., 0.5 and 1.0% by dry weight of soil) are considered for comparison. AAB is prepared by combining an alkaline solution (a mixture of sodium silicate and sodium hydroxide) with aluminosilicate precursors (Class F fly ash) at a 0.4 water to solids ratio. This study analyzes the mechanism of bonding interaction for both fibers reinforced AAB treated soil using stereomicroscopic, Fourier-transform infrared (FTIR) spectroscopy, and scanning electron microscope (SEM) analysis. The unconfined compressive strength (UCS), split tensile strength (STS), and flexural tests for PF-AAB-soil and TCF-AAB-soil are carried out. A 3-point bending test is conducted to investigate the flexural behavior of AAB-treated soil reinforced with PF and TCF after 28 days of curing. The influences of varying fiber dosages in AAB show a significant improvement in shear, tensile, and flexural strength properties of both fiber-reinforced AAB treated soil. The geomechanical results also show that PF reinforced soil attains a higher compressive shear and bonding resistance compared to TCF reinforced soil. Furthermore, numerical analysis using commercially available finite element software is carried out to compare the PF’s flexural failure patterns, and the TCF reinforced soil beam with the experimental results.

KW - Alkali activated binders

KW - Expansive clayey soil

KW - Fibers

KW - Microstructure

KW - Numerical analysis

UR - https://www.scopus.com/pages/publications/85114116041

U2 - 10.1007/978-981-16-1831-4_18

DO - 10.1007/978-981-16-1831-4_18

M3 - Conference contribution

AN - SCOPUS:85114116041

SN - 9789811618307

T3 - Lecture Notes in Civil Engineering

SP - 193

EP - 204

BT - Ground Improvement and Reinforced Soil Structures - Proceedings of Indian Geotechnical Conference, 2020

A2 - Satyanarayana Reddy, C. N.

A2 - Saride, Sireesh

A2 - Haldar, Sumanta

PB - Springer Science and Business Media Deutschland GmbH

Y2 - 17 December 2020 through 19 December 2020

ER -

Syed M, Kasat YV, Sarda GB, GuhaRay A. Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil: An Experimental Investigation and Numerical Modeling. In Satyanarayana Reddy CN, Saride S, Haldar S, editors, Ground Improvement and Reinforced Soil Structures - Proceedings of Indian Geotechnical Conference, 2020. Springer Science and Business Media Deutschland GmbH. 2022. p. 193-204. (Lecture Notes in Civil Engineering). doi: 10.1007/978-981-16-1831-4_18

Effect of Fiber Reinforcement on the Strength of Geopolymerised Soil: An Experimental Investigation and Numerical Modeling

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this