Effect of Type of Modified Bitumen on Selected Properties of Stone Mastic Asphalt Mixtures

4th International Conference on Road and Rail Infrastructure (CETRA 2016)

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Title Effect of Type of Modified Bitumen on Selected Properties of Stone Mastic Asphalt Mixtures
 
Creator Marta Wasilewska; Bialystok University of Technology Faculty of Civil and Environment Engineering
Krzysztof Blazejowski; Orlen Asfalt Sp. z o.o.
Przemyslaw Pecak; TPA Sp. z o.o.
 
Subject Highly Modified Asphalt; Stone Mastic Asphalt; Polymer Modified Bitumen; wearing course; Wehner/Schulze machine
 
Description Wearing course is the layer directly in contact with traffic loads and weather conditions. It should be resistant to water and frost, plastic deformations and meet the required threshold of skid resistance. SMA (Stone Mastic Asphalt) is one of the most popular mixture intended for wearing courses of road pavement for very heavy traffic loads. Therefore it contains materials of superior quality. This paper presents the experimental results of selected properties of SMA11 with two typical modified binders (ORBITON PMB 45/80-55, ORBITON PMB 45/80-65) and newly developed highly modified binder (ORBITON PMB 45/80-80 HiMA). These modified bitumens have similar penetration range but they differ in the type of polymer and its contents. Therefore that significantly affects on the differences in standard and functional parameters such as elastic recovery, force ductility etc. The primary purpose of highly-modified binders (HiMA type) is to counteract pavement cracking, plastic deformations and consequently to increase the life span of asphalt courses. It should be noted that tested SMA mixtures had the same aggregate particle-size distribution of mineral mixtures. The study of SMA aimed at determination of the water sensitivity expressed in ITSR (Indirect Tensile Strength Ratio) according to the standard 12697-12 (method A) and rutting resistance according to standard EN 12697-22 in the small apparatus (method B). Comparison of the results of those tests showed some differences between binders and mixtures. Specific situation was observed with rutting resistance where strong SMA skeleton decreased influence of binder type. In addition, evaluation of the skid resistance mixtures of the tested SMA were carried out using the Wehner/Schulze machine. Results may be valuable information for proper maintenance of existing pavements and on the stage of designing.
 
Publisher CETRA 2016
 
Contributor
 
Date 2017-02-28 15:21:03
 
Type Peer-reviewed Paper
 
Identifier http://master.grad.hr/cetra/ocs/index.php/cetra4/cetra2016/paper/view/605
 
Source CETRA 2016; 4th International Conference on Road and Rail Infrastructure
 
Language en
 
Rights 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 IV" 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.
 

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