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301336

Chemical Stabilization of Expansive Shale Using Natural Bagasse Fibers: A Case Study from Qena Area, Egypt

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Last updated: 05 Jan 2025

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Abstract

T
HE geotechnical performance of natural sugarcane bagasse fibers mixtures was investigated during chemical stabilization process of Dakhla expansive shale. Compositionally, Dakhla expansive shale, exposed at El-Mahrowsa, Qena, consists mainly of smectite, kaolinite, quartz, calcite, and anhydrite. These mineral associations are reflected by 36.83 wt.% SiO2, 16.76 wt.% Al2O3, 28.59 wt.% CaO, and 6.99 wt.% SO3. Geotechnically, the natural compacted shale without bagasse fibers addition exhibited 88 Kpa compressive strength, 35 Kpa tensile strength, and 450 m/s ultrasonic velocity. The free swelling percent of natural expansive shale is 73 %. During the chemical stabilization process, mixtures of natural bagasse fibers (1 %) were thoroughly homogenized and compacted with expansive shale. These mixtures were cured at 7, 28, and 90 days under room temperature and 100 % humidity. The geotechnical performance of these mixtures was evaluated using measurement of unconfined compressive strength, tensile strength, longitudinal ultrasonic velocity, and free swelling percent. The overall results indicate that the application of natural bagasse fibers (1 %) is useful to improve the geotechnical behaviour of the expansive shale at 7 days curing time (e.g. compressive strength increased from 88 to 310 Kpa, tensile strength increased from 35 to 130 Kpa, and ultrasonic velocity increased from 450 to 541 m/s). Unfortunately, the geotechnical properties of the treated expansive shale using natural bagasse fibers including unconfined compressive strength, tension strength, and ultrasonic velocity do not improve with increasing curing time from 7 to 90 days. Free swelling percent reduces very slightly with increasing curing time from 7 to 90 days.

DOI

10.21608/egjg.2023.206995.1046

Keywords

Expansive Shale, chemical stabilization, Natural Bagasse Fibres

Authors

First Name

Heba

Last Name

Osman

MiddleName

Taha

Affiliation

Department of Geology, Faculty of Science, South Valley University, Egypt

Email

mahmoud.sabry@sci.svu.edu.eg

City

-

Orcid

-

First Name

Hesham

Last Name

Ismaiel

MiddleName

-

Affiliation

Department of Geology, Faculty of Science, South Valley University, Egypt

Email

enggeohesh@gmail.com

City

-

Orcid

-

First Name

Raafat

Last Name

Attar

MiddleName

-

Affiliation

Department of Geology, Faculty of Science, South Valley University, Egypt

Email

raafat_attar@sci.svu.edu.eg

City

-

Orcid

-

Volume

67

Article Issue

1

Related Issue

40290

Issue Date

2023-12-01

Receive Date

2023-04-21

Publish Date

2023-12-01

Page Start

87

Page End

94

Print ISSN

0022-1384

Online ISSN

2805-2617

Link

https://egjg.journals.ekb.eg/article_301336.html

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https://egjg.journals.ekb.eg/service?article_code=301336

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Original Article

Type Code

2,013

Publication Type

Journal

Publication Title

Egyptian Journal of Geology

Publication Link

https://egjg.journals.ekb.eg/

MainTitle

Chemical Stabilization of Expansive Shale Using Natural Bagasse Fibers: A Case Study from Qena Area, Egypt

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Article

Created At

28 Dec 2024