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82617

CHARACTERIZATION AND EVALUATION OF ASPHALT MODIFIED WITH SOME THERMOPLASTIC POLYMERS

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Last updated: 25 Dec 2024

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Abstract

Some commercial thermoplastic polymers such as styrene-butadiene rubber (SBR),
polyacrylonitrile (K), polystyrene (PS), polypropylene (PP) and polychloroprene (PC) are used for
the modification of two types of asphalt which are: asphalt 60/70 Suez (L) and asphalt 80/100
Alex (H). The best ratio of modifying polymer to be added by hot mixing method at 150-170°C to
asphalt, was determined by measuring the values of penetration, softening point, penetration
temperature susceptibility (PTS) and penetration index (PI) for the obtained cooled blended
formulations.
For asphalt (L), such optimum ratio was 6% for (SBR and PP), 9% for (PS) and 12% for (PC),
while in case of asphalt (H) the optimum ratio was 6% for (SBR), 9% for (PP and K) and 12% for
(PS and PC).
Dynamic viscosity tests i.e. shearing in (RV 12) for 5 mins at a high shear rate of 1198.08s?
and then for 10 mins at a low shear rate of 149.76s", at different temperatures (30, 40, 50 and
60°C) showed that formulation samples LSBR and HSBR have high yield stress values (To) which
give promising indications about the validity of their possible use for pavement. Moreover
formulations based on asphalt (H) and modified with SBR gave the highest value of tensile
strength as well as thermal stability at 250°C for time period of 150 hours. All the prepared
formulations modified with such thermoplastic polymers were resistant to different application
media as compared with parent unmodified asphalt.

DOI

10.21608/erjm.2004.82617

Keywords

Asphalt, Asphalt modified, thermoplastic polymers, Dynamic viscosity

Authors

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Last Name

A. El-Kholy

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Affiliation

Egyptian Petroleum Research Institute( EPRI), Nasr City, Cairo, Egypt.

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First Name

E.

Last Name

A. Hassan

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Affiliation

Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.

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First Name

A.

Last Name

M.M. Abd El-Rahman

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Affiliation

Egyptian Petroleum Research Institute( EPRI), Nasr City, Cairo, Egypt.

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First Name

I.

Last Name

M. Nassar

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Affiliation

Egyptian Petroleum Research Institute( EPRI), Nasr City, Cairo, Egypt.

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Volume

27

Article Issue

1

Related Issue

12460

Issue Date

2004-01-01

Receive Date

2020-04-15

Publish Date

2004-01-01

Page Start

103

Page End

113

Print ISSN

1110-1180

Online ISSN

3009-6944

Article File

ERJM_Volume 27_Issue 1_Pages 103-113.pdf

PDF . 3.2MB

Link

https://erjm.journals.ekb.eg/article_82617.html

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https://erjm.journals.ekb.eg/service?article_code=82617

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Original Article

Type Code

1,118

Publication Type

Journal

Publication Title

ERJ. Engineering Research Journal

Publication Link

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

MainTitle

CHARACTERIZATION AND EVALUATION OF ASPHALT MODIFIED WITH SOME THERMOPLASTIC POLYMERS

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Article

Created At

22 Jan 2023