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[62970] Rozdział: Resistance to the effects of water and frost of pavement structure in the cold recycling technologyw książce: Maintenance and Rehabilitation of Pavements and Technological Control, Edited by Ezio Santagata. Rozdział: 10. Recycling.ISBN: 978-88-8202-029-3 Wydawca: Politecnico di Torino Opublikowano: Lipiec 2009 Miejsce wydania: Torino, Italy Liczba stron: 8 Liczba arkuszy wydawniczych: 0.50 Autorzy / Redaktorzy / Twórcy
Grupa MNiSW: Autorstwo rozdziału w monografii naukowej w językach: angielskim, niemieckim, francuskim, hiszpańskim, rosyjskim lub włoskim Punkty MNiSW: 5 Keywords: Foamed bitumen  road base  bitumen emulsion  AASHTO T283.  |
Because of the climatic conditions in the Central European countries the road pavement structure, apart from having the required load capacity, should be water and frost resistant. This problem is especially important for pavements produced with the cold recycling technology. Foamed bitumen and, alternatively, bitumen emulsion were used for the resistance tests of the pavements. The bitumen binder content in the recycled material was 2,0% 2,5% and 3,0%. The tests into the standard properties (stability against deformation, Marshall stiffness and indirect tensile strength ITS) proved that the use of foamed bitumen is more advantageous than bitumen emulsion in terms of these mechanical properties of pavement. The measurements of resistance to the effects of water and frost according to the AASHTO T283 method and the resistance to low temperature cracking according to the PANK 4302 methods confirmed that pavement produced with the cold recycling technology is resistant to these climatic factors. The tests also showed that pavement produced with foamed bitumen is more resistant than pavement with bitumen emulsion and that general water resistance criterion (tensile strength retained TRS) of such pavement should be broadened to include e.g. the AASHTO T283 method.