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Appl. Sci. 2017, 7(5), 524; doi:10.3390/app7050524

Adhesion Promoters in Bituminous Road Materials: A Review

1
Department of Chemistry and Chemical Technologies, University of Calabria, Arcavacata di Rende (CS) 87036, Italy
2
Kazakhstan Highway Research Institute, Almaty 050061, Kazakhstan
3
Department of Agricultural, Environmental and Food Sciences (DIAAA), University of Molise, Via De Sanctis, Campobasso (CB) 86100, Italy
4
CSGI (Center for Colloid and Surface Science), Via della Lastruccia 3, Sesto Fiorentino (FI) I-50019, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Zhanping You
Received: 19 April 2017 / Revised: 10 May 2017 / Accepted: 15 May 2017 / Published: 18 May 2017
(This article belongs to the Section Materials)
View Full-Text   |   Download PDF [996 KB, uploaded 23 May 2017]   |  

Abstract

This review focuses on certain classes of organic compounds known variously in the specific literature of asphalt as adhesion promoters, antistripping agents, wetting agents, antistrips, or adhesion agents. These kinds of organic additives are currently formulated to enhance the bitumen coating of mineral aggregates and improve the workability of asphalt mixtures. In this review, the term “adhesion promoters” includes both synthetic organic compounds as well as those extracted from natural resources, mixed in trace amounts to bitumen. Their main role is to alter the interfacial energy, so that the presence of water, even in trace, does not weaken the bitumen-aggregate bond and tends to favor adhesion. The report also considers the chemical functionalities that play a predominant role in bonding, as well as the effects of surface modification of the aggregate due to the presence of adhesion promoters in pre-blended bituminous mixtures. Although bitumen is widely used in road pavement construction and the discussion is mainly addressed to the improvement of adhesion in road materials, adhesion and wetting properties can also represent a general issue in various bitumen-based industrial products. View Full-Text
Keywords: asphalt concrete; adhesion promoters; antistripping agents asphalt concrete; adhesion promoters; antistripping agents
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Oliviero Rossi, C.; Teltayev, B.; Angelico, R. Adhesion Promoters in Bituminous Road Materials: A Review. Appl. Sci. 2017, 7, 524.

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