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223409

Predicting Resilient Modulus of Unbound Granular Base/Subbase Material.

Article

Last updated: 22 Jan 2023

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Public Works Engineering

Abstract

This research paper presents the results of modeling the resilient modulus (MR) of unbound granular base/subbase layers by means of the material index properties and stress state. The database employed in this study was collected from literature studies which includes 16 unbound granular materials (nine of them from Virginia, US while the other seven were from different quarries in Egypt). The database includes Liquid limit (LL), plastic limit (PL), plasticity index (PI), weighted PI (WPI), maximum dry density (MDD), optimum moisture content (OMC), passing sieve No. 4 (Pass#4), passing sieve No.200 (Pass#200), and 233 number of MR measurements. Two common literature MR-predictive models were used K-θ and Universal models as the base models. By using the fitting curve toolbox (CFTOOL) in the MATLAB program, the values of the regression coefficients of both models were recalibrated to predict the MR for each material individually. Both models regression coefficients (k-values) were correlated with the index properties of the soils (LL, PL, WPI, MDD, OMC, Pass#4 and Pass#200). Then, the index properties of the investigated UGMs, that affect the MR measurements, were correlated with the recalibrated regression coefficients of both models. Results showed that MR predictions based on index properties and stress state were satisfactory having a coefficient of determination, R2 of 0.80, and 0.79 for universal and K-θ models, respectively.

DOI

10.21608/bfemu.2022.223409

Keywords

Resilient Modulus, Unbound Granular Materials, Stress State, soil properties, K-θ Model, Universal Model`

Authors

First Name

Yasser

Last Name

F. Al-Dulaimi

MiddleName

-

Affiliation

Alfarabi University, College Civil Engineering Dept.- MSc student, at Public Works Engineering Dept. Faculty of Engineering, Mansoura University, Egypt.

Email

yasser.200740@gmail.com

City

mansoura

Orcid

-

First Name

Ahmed

Last Name

M. Awed

MiddleName

-

Affiliation

Assistant Professor, Public Works Engineering Department, Faculty of Engineering, Mansoura University, Egypt.

Email

ammawed@mans.edu.eg

City

-

Orcid

-

First Name

Alaa

Last Name

Gabr

MiddleName

R.

Affiliation

Associate Professor, Public Works Engineering Department, Faculty of Engineering, Mansoura University, Egypt

Email

eng-alaa1400@mans.edu.eg

City

Mansoura

Orcid

-

First Name

Sherif

Last Name

EL-Badawy

MiddleName

M.

Affiliation

Professor, Public Works Dept., Faculty of engineering, Mansoura University, Egypt

Email

sbadawy@mans.edu.eg

City

Mansoura

Orcid

0000-0001-8348-1580

Volume

47

Article Issue

2

Related Issue

32041

Issue Date

2022-04-01

Receive Date

2021-01-10

Publish Date

2022-04-01

Page Start

1

Page End

10

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 47_Issue 2_Pages 1-10.pdf

PDF . 3.6MB

Link

https://bfemu.journals.ekb.eg/article_223409.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=223409

Order

8

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

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-

Details

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Article

Created At

22 Jan 2023