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[34561] Artykuł:

Application of the synthetic wax to improve the foamed bitumen parameters used in half-warm bituminous mixtures

Czasopismo: International Conference on Environmental Engineering (ICEE), Selected papers   Tom: 154, Strony: 1-9
ISSN:  2029-7092
ISBN:  978-609-457-640-9
Wydawca:  VILNIUS GEDIMINAS TECHNICAL UNIV PRESS, TECHNIKA, SAULETEKIO A1. 11, VILNIUS-40, LT-10233, LITHUANIA
Opublikowano: 2014
 
  Autorzy / Redaktorzy / Twórcy
Imię i nazwisko Wydział Katedra Procent
udziału
Liczba
punktów
Marek Iwański orcid logoWBiAKatedra Inżynierii Komunikacyjnej335.00  
Anna Chomicz-Kowalska orcid logoWBiAKatedra Inżynierii Komunikacyjnej335.00  
Justyna MrugałaWBiAKatedra Inżynierii Komunikacyjnej335.00  

Grupa MNiSW:  Materiały z konferencji międzynarodowej (zarejestrowane w Web of Science)
Punkty MNiSW: 15
Klasyfikacja Web of Science: Proceedings Paper


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

Fischer-Tropsch wax  foamed bitumen  foaming water content  expansion ratio  half-life 



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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