Title: Regulation of the Properties of Asphalt Concrete Pavement by the Use of Porous Mineral Powders
Abstract: The use of porous mineral powders, including waste of the industry, is the perspective direction in the solution of a problem of receiving quality asphalt. The use of such fillers can promote increased heat resistance, crack resistance, and shift resistance of a road composite. It also saves on preparation of asphalt mix and reduces environmental pollution. Porous fine fillers make for stronger structuring rather than denser. Micropores differ the high adsorptive potential. Therefore, the considerable part of surface-active components of bitumen are occluded. Conversely, bitumen impoverishment by easy fractions, which is caused by a selective filtration, can accelerate processes of aging of bitumen considerably. Therefore, inclusion in road construction of such raw materials causes the necessity of its comprehensive investigation. In this work, features of interaction of porous mineral materials with bitumen are described. The analysis of influence of porous mineral powder from a ceramsite dust on crack resistance of asphalt and bitumen aging in a composite is carried out. It is shown that mineral powder from expanded clay allows increased crack resistance of asphalt. However, it is necessary to control its influence on intensity of aging knitting.
Publication Year: 2014
Publication Date: 2014-06-23
Language: en
Type: article
Indexed In: ['crossref']
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