STATE OF THE ART OF METHODS FOR AS-SESSING THE ADHESION OF BITUMEN TO MINERAL AGGREGATES
Journal Title: Вестник Харьковского национального автомобильно-дорожного университета - Year 2019, Vol 85, Issue
Abstract
Problem. Performance and durability of the asphalt concrete is based on the quality of the origin mineral aggregates and asphalt binder. The main purpose of the bitumen in asphalt concrete is the homogenous distribution on the mineral aggregate surface and joining them into monolith structure. Bitumen must make strong bonds between mineral grains and keep contact with their surface under a water and a traffic influence during a performance period. Due this adhesion is one of the priority characteristics of the bitumen binder, and the methods of its assess-ment and improvement are actual. Goal. The aim of this study is to make a review of foreign and origin methods of the assessing the adhesion of bitumen to mineral aggregates. Methodology. For this purpose where used the publications of the foreign and Ukrainian researches. Results. The beginning of adhesion researches can be referred to the 30th of the last century, when the base requirements for the adhesion assessment methods where formulated and initial methods where developed. Till now the researches all over the world developed more than 150 methods of the adhesion of bitumen to mineral aggregates assessment, and none of them become conventional. The existing methods of the adhesion assessing can be divided on one which let to find the adhesion strength and one which let to assess the stripping resistance. The first group includes meth-ods based on measuring the force that required to breakaway a bitumen layer from a researching surface. The second group is represented by methods based on changing adhesion properties of the material under the external factor influence (such as water, or an aggressive medium, a temperature, a me-chanical stress). The methods from the second group can be divided into the methods which evaluate the stripping influence of the water on the uncompacted asphalt mixture and on the specimens compacted in the laboratory, or taken from the pavement. Originality. The advantages and disadvantages of the existed and current methods of the assessing the adhesion of bitumen to mineral aggregates are considered.
Authors and Affiliations
Y. Pyrig
Keywords
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- EP ID EP648226
- DOI 10.30977/BUL.2219-5548.2019.85.0.73
- Views 92
- Downloads 0
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