ASSESSMENT OF AN APPROPRIATE MODIFIER CONTENT IN MODIFIED BITUMEN BASED ON THE MULTIPLE STRESS CREEP RECOVERY TEST

3rd International Conference on Road and Rail Infrastructure (CETRA 2014)

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Title ASSESSMENT OF AN APPROPRIATE MODIFIER CONTENT IN MODIFIED BITUMEN BASED ON THE MULTIPLE STRESS CREEP RECOVERY TEST
 
Creator Jan B. Krol; Warsaw University of Technology The Faculty of Civil Engineering
Piotr Radziszewski; Warsaw University of Technology The Faculty of Civil Engineering
Karol J. Kowalski; Warsaw University of Technology The Faculty of Civil Engineering
Michał Sarnowski; Warsaw University of Technology The Faculty of Civil Engineering
 
Subject polymer modified bitumen (PMB); multiple stress creep recovery (MSCR); modification
 
Description Construction of a durable bituminous pavements requires high quality materials such as bituminous binders with extended viscoelastic properties. The main objective of this paper was to compare and analyse high temperature viscoelastic properties of polymer modified bitumen (PMB) in order to assess appropriate modifier content. In this paper, there is described multiple stress creep recovery (MSCR) procedure in accordance to Superpave PG specification. Using the MSCR procedure, comparison with a traditional PG criteria was discussed. PG criteria and MSCR procedure were used to asses properties of polymer modified bitumens produced in Europe and to classified them in accordance to European standards. Additionally, new MSCR procedure was used to verify properties of binders used for construction of high traffic load pavements. Based on a conventional tests (penetration, softening point, elastic recovery and Fraass breaking point) as well as recovery and non-recoverable creep compliance obtained from MSCR test, amount of an appropriate modifier content was analysed. It was concluded, that although bituminous binders complies with European specification requirements, they are significantly different in terms of their rheological properties due to the modifier content. It was found, that polymer modified bitumen within the same hardness group exhibit different high temperature properties. This work confirmed poor correlation between elastic recovery in ductility test versus recovery from MSCR test.
 
Publisher CETRA 2014
 
Contributor
 
Date 2017-02-28 16:41:34
 
Type Peer-reviewed Paper
 
Identifier http://master.grad.hr/cetra/ocs/index.php/cetra3/cetra2014/paper/view/332
 
Source CETRA 2014; 3rd International Conference on Road and Rail Infrastructure
 
Language en
 
Rights <p>Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="http://creativecommons.org/licenses/by/3.0/">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference. <br /> <strong>b)</strong> Submitted full papers will be published in the book of proceedings "Road and Rail Infrastructure II" as well as in digital form (on a CD). Conference organiser is allowed to publish author's names, institution and country as well as the paper abstract on the conference web site.</p>
 

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