MATERIAL ENGINEERING, STRUCTURAL AND TECHNOLOGICAL PECULIARITIES OF PROVISION OF ADHESION STRENGTH OF SEALING MATERIALS TO ASPHALT PAVE-MENT SURFACE AT CRACK ZONES
Journal Title: Вестник Харьковского национального автомобильно-дорожного университета - Year 2019, Vol 85, Issue
Abstract
Problem. It is noted that one of the basic fundamen-tal characteristics of bitumen-polymer hot-applied sealing materials is strength of adhesion to the surface of crack walls in asphalt concrete road pavement. Based on the results of scientific and technical supervision of crack sealing technique and monitoring of the sealed cracks it is shown that such struc-tural and technological solutions as routing and routed reservoir preparation at crack with lower value of form coefficient, prevention of sealing material adhesion to the bottom of the reservoir pre-pared to sealing, coating of reservoir walls with primer prior to sealing decrease risk of loss of adhesion of sealing material to reservoir walls at crack opening and increase long-termimpermeability of cracks. Goal. The study of the filler influence con-centration in bitumen-polymer mastic on the strength of its adhesion to the surface of asphalt concrete, and clarification of the main structural and technological solutions that increase the long-term sealing of cracks in the asphalt concrete pavement. Methodology. The experimental determination of the indexes of adhesion of the sealing material with the surface of asphalt concrete was carried out by the method of uniform separation simultaneously throughout the contact area. Results. Results of ex-perimental research of influence of filler content and test temperature on strength of adhesion of bi-tumen-polymer sealing material to asphalt concrete surface are described. Originality. It is found that increase of content of crumb rubber, as filler in sealing material composition, results in decrease of values of bitumen-polymer sealing material adhesion to asphalt concrete surface. Practical value. The results of the scientific and technical support of crack sealing technologies and the subsequent monitoring of sealed cracks indicate that the cutting and prepa-ration of the gutter above the crack with the coefficient of form less than 1, the absence of adhesion of the sealing material to the bottom of the gutter, the primer walls of the gutter primer before sealing, reduce the risk of grip loss between sealing material and walls of the gutter when opening the crack and increase their long-term work.
Authors and Affiliations
V. Zhdanyuk, O. Volovyk, K. Tsyrkunova, R. Gnatenko
Keywords
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- EP ID EP648221
- DOI 10.30977/BUL.2219-5548.2019.85.0.66
- Views 79
- Downloads 0
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