246850

Sawdust Effect on Compressibility and Shear Strength Characteristics of Highly Organic Clay

Article

Last updated: 04 Jan 2025

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Abstract

Organic soils are known for their low shear strength and high compressibility, making them unstable and unsuitable for supporting foundations with instability problems such as local sinking, development of slip failure, excessive settlement, and bearing capacity failure. Thus, such soils need improvement prior to construction to suit the infrastructure projects. Several improvement techniques are available depending on the thickness of the organic deposit, type, and characteristics. The stabilization technique is one method that is considered economical, functional, and environmentally friendly; it is the process of changing the chemical properties of soil by adding stabilizers in wet or dry conditions such as lime, fly ash, cement, sawdust, or sawdust ash to increase the shear strength, decrease the compressibility and permeability of the soil. In the current study, an experimental effort investigates the effect of mixing sawdust with highly organic clays. In the presence of moisture, sawdust, widely available and economical, reacts chemically, forming cementations compounds that improve soils' strength and compressibility properties. Highly organic clay samples from Kafr El Sheikh Governorate, Egypt, were mixed with 5 % cement and varying percentages of sawdust by weight. Samples are cured for seven days before conducting shear strength and compressibility tests. The tests include laboratory shear vane, direct shear, and one-dimensional oedometer tests. The results provide insight into the use of sawdust in improving the strength and deformation properties of the tested organic clay.

DOI

10.21608/erjm.2022.127027.1151

Keywords

Organic clay, Stabilization, sawdust, Direct shear, Oedometer

Authors

First Name

Shehab

Last Name

Agaiby

MiddleName

-

Affiliation

Public Works Department, Civil and Environmental Engineering, Cairo University, Giza, Egypt

Email

shehabagaiby@cu.edu.eg

City

-

Orcid

0000-0002-1590-6206

First Name

Aya

Last Name

Hassan

MiddleName

W.

Affiliation

Public Works Department, Civil and Environmental Engineering, Cairo University, Giza, Egypt

Email

aya.abdelazize.s@eng-st.cu.edu.eg

City

-

Orcid

-

First Name

Ahmed

Last Name

Dakhli

MiddleName

H.

Affiliation

Public Works Department, Civil and Environmental Engineering, Cairo University, Giza, Egypt

Email

tiba.ce@gmail.com

City

-

Orcid

-

First Name

Amr

Last Name

Elhakim

MiddleName

-

Affiliation

Department of Public Works, Faculty of Engineering, Cairo University, Giza, Egypt

Email

aelhakim@eng.cu.edu.eg

City

Dokki

Orcid

-

Volume

45

Article Issue

3

Related Issue

35317

Issue Date

2022-07-01

Receive Date

2022-03-12

Publish Date

2022-07-01

Page Start

379

Page End

387

Print ISSN

1110-1180

Online ISSN

3009-6944

Link

https://erjm.journals.ekb.eg/article_246850.html

Detail API

https://erjm.journals.ekb.eg/service?article_code=246850

Order

10

Type

Original Article

Type Code

1,118

Publication Type

Journal

Publication Title

ERJ. Engineering Research Journal

Publication Link

https://erjm.journals.ekb.eg/

MainTitle

Sawdust Effect on Compressibility and Shear Strength Characteristics of Highly Organic Clay

Details

Type

Article

Created At

22 Jan 2023