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140054

A Simplified Technique for Measuring Dynamic Modulus of Asphalt Concrete.

Article

Last updated: 04 Jan 2025

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Subjects

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Tags

Civil Engineering

Abstract

Measuring dynamic modulus of asphalt mixes is becoming more important for pavement design. There are different methods for measuring dynamic modulus of asphalt mixes by using complicated dynamic equipments, not available in Egypt. Recently, the plastometer apparatus has been manufactured in Egypt and successfully used for measuring dynamic modulus (Ed) of asphalt mixes. Yet, this apparatus has not widely used in highway laboratories because its specimen differs in shape and preparing method from Marshall procedure. So, this study aims at simplifying the method of obtaining dynamic modulus of asphalt mixes by conducting the simple static indirect tensile test (ITT) on Marshall specimen in traditional highway laboratories. Quantifying the effects of aggregate gradation, asphalt content and compaction effort on the measured dynamic modulus is another objective. To achieve these objectives, two major tests were conducted on different asphalt mixes with varying three aggregate gradations, five asphalt contents and three compacting efforts. The conducted tests are plastometer and ITT, which were used for measuring dynamic modulus (Ed) and static elasticity modulus (Es) of paving mixes, respectively. Statistical analysis of the two test results showed that a good estimate of Ed can be obtained from the results of ITT at various mix conditions, using the developed equation. Finally, the study recommends to use coarse aggregate gradation in paving mixes under firm control on asphalt content and compaction for superior field performance of these mixes.

DOI

10.21608/bfemu.2021.140054

Keywords

Plastometer test, Indirect tensile test, Modulus of elasticity and Asphalt mixes

Authors

First Name

Mohamed

Last Name

Abdel Motaleb

MiddleName

-

Affiliation

Lecturer, Constriction Engineering Department., Faculty of Engineering, Zagazig University., Zagazig., Egypt

Email

-

City

Zagazig

Orcid

-

First Name

Ahmed

Last Name

Mohamady

MiddleName

-

Affiliation

Lecturer, Constriction Engineering Department., Faculty of Engineering, Zagazig University., Zagazig., Egypt

Email

dr_a_moliamady@yahoo.com

City

Zagazig

Orcid

-

Volume

29

Article Issue

3

Related Issue

19657

Issue Date

2004-09-01

Receive Date

2004-06-11

Publish Date

2021-01-16

Page Start

1

Page End

11

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 29_Issue 3_Pages 1-11.pdf

PDF . 178.1kB

Link

https://bfemu.journals.ekb.eg/article_140054.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=140054

Order

3

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

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

MainTitle

A Simplified Technique for Measuring Dynamic Modulus of Asphalt Concrete.

Details

Type

Article

Created At

22 Jan 2023