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[10980] Artykuł:

Application of synthetic wax for improvement of foamed bitumen parameters

Czasopismo: Construction and Buildings Materials   Tom: 83, Strony: 62-69
ISSN:  0950-0618
Wydawca:  ELSEVIER SCI LTD, THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND
Opublikowano: Maj 2015
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału
Liczba
punktów
Marek Iwański orcid logoWBiAKatedra Inżynierii Komunikacyjnej4016.00  
Anna Chomicz-Kowalska orcid logoWBiAKatedra Inżynierii Komunikacyjnej4016.00  
Krzysztof Maciejewski orcid logoWBiA208.00  

Grupa MNiSW:  Publikacja w czasopismach wymienionych w wykazie ministra MNiSzW (część A)
Punkty MNiSW: 40
Klasyfikacja Web of Science: Article


Pełny tekstPełny tekst     DOI LogoDOI     Web of Science Logo Web of Science    
Keywords:

foamed bitumen  Fisher-Tropsh wax  foaming water content  expansion ratio  half-life  foam index  Half-Warm Mix Asphalt  Cold Mix Asphalt 



Abstract:

The need for bitumen modification allowing lower asphalt production temperatures is a direct result of economic and environmental issues. Compared with the traditional Hot Mix Asphalt (HMA) technology, foamed bitumen used in the Warm and Half Warm Mix Asphalt (WMA, HWMA) processes provides an approximately 30–40 °C reduction in operating temperatures. This paper analyses the effect of the Fischer-Tropsch (FT) wax modifier on foamed bitumen parameters. The evaluation is focused on the basic properties of the binder and the parameters of the bituminous foam. The tests were performed on 35/50 and 50/70 penetration grade binders for road construction, modified with 0.5% to 2.5% FT wax, added with an increment of 0.5% relative to the bitumen mass. The following basic parameters were evaluated (before the foaming process): penetration, Fraass breaking point and softening point. The bitumen foam parameters were measured at the foaming water content (FWC) in the range from 1.5% to 4.0% with an increment of 0.5%. The tests allowed determining optimal application ranges for the FT and the FWC to produce asphalt at lower temperatures.



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