EPS eLibrary: METHOD OF EVALUATION OF STRESS RELAXATION PROPERTIES IN ROAD BITUMENS

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Title: METHOD OF EVALUATION OF STRESS RELAXATION PROPERTIES IN ROAD BITUMENS

Year

2018

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1732

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Title

METHOD OF EVALUATION OF STRESS RELAXATION PROPERTIES IN ROAD BITUMENS

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Authors

J. Czarnecki

DOI

10.5593/sgem2018/6.3/S27.081

DOI Issue

ISSN

1314-2704

ISBN

978-619-7408-52-2

Language

English

Volume

Issue

6.3

Editor

Scientific Area

Green Design and Sustainable Architecture

Abstract/ Foreword

One of the most important properties of bitumen is - among others ? its ability to stress relaxation. This ability affects the energy absorption from the vehicles? wheels by asphalt pavement. It has also influence on deformation, damages and durability of road surface. The problem of the destruction of asphalt layers is common and current. In order to determine the physicomechanical characteristic of bitumen, in the article, a method of evaluation of stress relaxation properties in road bitumens is presented.
In this method, direct shear apparatus was used. With it, the shear force of bitumen placed between two polished stone tiles was determined. Vertical force was not applied to the device. Therefore, as an analogy to soil tests and knowing the dimensions of the tiles, asphalt cohesion could be determined. The tests were performed for two shear speeds and five bitumen temperatures. Dividing the value of asphalt cohesion at higher shear rate by its value at a lower speed, stress relaxation coefficient was determined. Five different types of road bitumen, including clean and modified, were tested. Stress relaxation coefficient specified by this method, may be helpful in selecting the type of bitumen for pavement constructions.

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Type

conference

Url

https://www.sgem.org/index.php/jresearch-article?citekey=Czarnecki201827627634

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Proceedings Тitle

18th International Multidisciplinary Scientific GeoConference SGEM 2018

Note

18th International Multidisciplinary Scientific GeoConference SGEM 2018, 02-08 July, 2018

Type

Proceedings Paper

Publisher

STEF92 Technology

Series

International Multidisciplinary Scientific GeoConference-SGEM

Organization

Bulgarian Acad Sci; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Slovak Acad Sci; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; World Acad Sci; European Acad Sci, Arts & Letters; Ac

Pages

627-634

Date

02-08 July, 2018

Online Source Type

website

Digital Source Type

cdrom

2033

Keywords

stress relaxation; road bitumen; asphalt cohesion; direct shear apparatus; Coulomb's law

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