Effect of new types of synthetic waxes designed for low-temperature asphalt mixtures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F17%3A00312528" target="_blank" >RIV/68407700:21110/17:00312528 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Effect of new types of synthetic waxes designed for low-temperature asphalt mixtures

Original language description

The main advantage of using synthetic waxes for bituminous binders and asphalt mixes is reducing of the viscosity and better workability at lower paving temperature. It makes possible to reduce compaction temperature of asphalt mixtures which are related to energy saving in the production and laying of asphalt mixtures in comparison with conventional HMA. Another advantage is the possibility to increase technological time interval for the transport and processing. There are many additives to reduce working temperatures for asphalt mixtures and this area noted considerable progress in the past 10–15 years. Currently there are developed and tested a new generation of waxes, with using various bases—traditional FT waxes, fatty acid amides, as well as polyethylene waxes and waxes derived from extracts of sugar cane. The article deals with comparison of the selected types of synthetic waxes mixed with pure bituminous binder gradation 50/70. The properties of bituminous binders were evaluated using the basic empirical tests, rotational viscosity, MSCR test and oscillatory test using the Dynamic Shear Rheometer (DSR). Subsequently, the individual binders were used for the production of asphalt mixture ACsurf 11 at reduced temperature. The asphalt mixtures were tested for porosity, water sensitivity (ITSR), stiffness modules, resistance to permanent deformation and low temperature characteristics. The results show that the use of synthetic waxes may reduce the operating temperature of production and compaction of asphalt mixtures. However great attention should be given to the potential negative effects that can be caused by both chemical composition of the wax and more often to so improved workability at reduced temperature, that there is a significant decrease in porosity. Attention is also focused on the connection between performance based characteristics of asphalt mixtures and bituminous binders.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

<a href="/en/project/TE01020168" target="_blank" >TE01020168: Centre for Effective and Sustainable Transport Infrastructure (CESTI)</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Bearing Capacity of Roads, Railways and Airfields

ISBN

978-1-138-29595-7

ISSN

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e-ISSN

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Number of pages

8

Pages from-to

335-342

Publisher name

Taylor & Francis Group

Place of publication

Londýn

Event location

Atény

Event date

Jun 28, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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