Stabilization of expansive black cotton soils with alkali activated binders

S. Mazhar; A. GuhaRay; A. Kar; G. S.S. Avinash; R. Sirupa

doi:10.1007/978-3-319-97112-4_185

Stabilization of expansive black cotton soils with alkali activated binders

S. Mazhar, A. GuhaRay^*, A. Kar, G. S.S. Avinash, R. Sirupa

^*Corresponding author for this work

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

4 Scopus citations

Abstract

The black cotton soil is mainly composed of clay minerals of Smectite group and is highly expansive when exposed to moisture. The present paper proposes a method of geo-polymerizing the black cotton soil with alkali activated binders (AAB). AAB is produced by the reaction between an aluminosilicate precursor (primarily Class F fly ash and/or slag) and an alkali activator solution of sodium hydroxide and sodium silicate. The water to solids ratio is maintained at 0.3. Mineralogical and microstructural characterizations through X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) are carried out for both untreated and treated soil to identify the changes in chemical composition and surface morphology. The index properties, compaction characteristics, unconfined compressive strength (UCS) and swelling characteristics of both untreated and treated soil are carried out. It is observed that the AAB reduces the plasticity index and free swell of black cotton soil by 15–25%, while the UCS values are increased by 10–12%. Recommendations on practical implementation of this technique for stabilization of expansive soils are proposed based on the findings of this study.

Original language	English
Title of host publication	Springer Series in Geomechanics and Geoengineering
Editors	Wei Wu, Hai-Sui Yu
Publisher	Springer Verlag
Pages	826-829
Number of pages	4
ISBN (Print)	9783319971117
DOIs	https://doi.org/10.1007/978-3-319-97112-4_185
State	Published - 2018
Externally published	Yes
Event	China-Europe Conference on Geotechnical Engineering, 2016 - Vienna, Austria Duration: 13 Aug 2016 → 16 Aug 2016

Publication series

Name	Springer Series in Geomechanics and Geoengineering
ISSN (Print)	1866-8755
ISSN (Electronic)	1866-8763

Conference

Conference	China-Europe Conference on Geotechnical Engineering, 2016
Country/Territory	Austria
City	Vienna
Period	13/08/16 → 16/08/16

Bibliographical note

Publisher Copyright:
© 2018, Springer Nature Switzerland AG.

Keywords

Alkali activated binders
Expansive soil
Ground improvement
Stabilization

ASJC Scopus subject areas

Geotechnical Engineering and Engineering Geology
Mechanics of Materials

Access to Document

10.1007/978-3-319-97112-4_185

Cite this

@inproceedings{c3ccf8a9b3c24e5283d9d9301fea4389,

title = "Stabilization of expansive black cotton soils with alkali activated binders",

abstract = "The black cotton soil is mainly composed of clay minerals of Smectite group and is highly expansive when exposed to moisture. The present paper proposes a method of geo-polymerizing the black cotton soil with alkali activated binders (AAB). AAB is produced by the reaction between an aluminosilicate precursor (primarily Class F fly ash and/or slag) and an alkali activator solution of sodium hydroxide and sodium silicate. The water to solids ratio is maintained at 0.3. Mineralogical and microstructural characterizations through X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) are carried out for both untreated and treated soil to identify the changes in chemical composition and surface morphology. The index properties, compaction characteristics, unconfined compressive strength (UCS) and swelling characteristics of both untreated and treated soil are carried out. It is observed that the AAB reduces the plasticity index and free swell of black cotton soil by 15–25%, while the UCS values are increased by 10–12%. Recommendations on practical implementation of this technique for stabilization of expansive soils are proposed based on the findings of this study.",

keywords = "Alkali activated binders, Expansive soil, Ground improvement, Stabilization",

author = "S. Mazhar and A. GuhaRay and A. Kar and Avinash, {G. S.S.} and R. Sirupa",

note = "Publisher Copyright: {\textcopyright} 2018, Springer Nature Switzerland AG.; China-Europe Conference on Geotechnical Engineering, 2016 ; Conference date: 13-08-2016 Through 16-08-2016",

year = "2018",

doi = "10.1007/978-3-319-97112-4_185",

language = "English",

isbn = "9783319971117",

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Mazhar, S, GuhaRay, A, Kar, A, Avinash, GSS & Sirupa, R 2018, Stabilization of expansive black cotton soils with alkali activated binders. in W Wu & H-S Yu (eds), Springer Series in Geomechanics and Geoengineering. Springer Series in Geomechanics and Geoengineering, Springer Verlag, pp. 826-829, China-Europe Conference on Geotechnical Engineering, 2016, Vienna, Austria, 13/08/16. https://doi.org/10.1007/978-3-319-97112-4_185

Stabilization of expansive black cotton soils with alkali activated binders. / Mazhar, S.; GuhaRay, A.; Kar, A. et al.
Springer Series in Geomechanics and Geoengineering. ed. / Wei Wu; Hai-Sui Yu. Springer Verlag, 2018. p. 826-829 (Springer Series in Geomechanics and Geoengineering).

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

TY - GEN

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AU - GuhaRay, A.

AU - Kar, A.

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AU - Sirupa, R.

PY - 2018

Y1 - 2018

N2 - The black cotton soil is mainly composed of clay minerals of Smectite group and is highly expansive when exposed to moisture. The present paper proposes a method of geo-polymerizing the black cotton soil with alkali activated binders (AAB). AAB is produced by the reaction between an aluminosilicate precursor (primarily Class F fly ash and/or slag) and an alkali activator solution of sodium hydroxide and sodium silicate. The water to solids ratio is maintained at 0.3. Mineralogical and microstructural characterizations through X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) are carried out for both untreated and treated soil to identify the changes in chemical composition and surface morphology. The index properties, compaction characteristics, unconfined compressive strength (UCS) and swelling characteristics of both untreated and treated soil are carried out. It is observed that the AAB reduces the plasticity index and free swell of black cotton soil by 15–25%, while the UCS values are increased by 10–12%. Recommendations on practical implementation of this technique for stabilization of expansive soils are proposed based on the findings of this study.

AB - The black cotton soil is mainly composed of clay minerals of Smectite group and is highly expansive when exposed to moisture. The present paper proposes a method of geo-polymerizing the black cotton soil with alkali activated binders (AAB). AAB is produced by the reaction between an aluminosilicate precursor (primarily Class F fly ash and/or slag) and an alkali activator solution of sodium hydroxide and sodium silicate. The water to solids ratio is maintained at 0.3. Mineralogical and microstructural characterizations through X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR) are carried out for both untreated and treated soil to identify the changes in chemical composition and surface morphology. The index properties, compaction characteristics, unconfined compressive strength (UCS) and swelling characteristics of both untreated and treated soil are carried out. It is observed that the AAB reduces the plasticity index and free swell of black cotton soil by 15–25%, while the UCS values are increased by 10–12%. Recommendations on practical implementation of this technique for stabilization of expansive soils are proposed based on the findings of this study.

KW - Alkali activated binders

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KW - Ground improvement

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BT - Springer Series in Geomechanics and Geoengineering

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PB - Springer Verlag

T2 - China-Europe Conference on Geotechnical Engineering, 2016

Y2 - 13 August 2016 through 16 August 2016

ER -

Stabilization of expansive black cotton soils with alkali activated binders

Abstract

Publication series

Conference

Bibliographical note

Keywords

ASJC Scopus subject areas

Access to Document

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Cite this