Roads and Bridges - Drogi i Mosty
11, 3, 2012, 233-248

Synthetic wax effect on the resilient stiffness modulus of asphalt concrete

Marek Iwański Mail
Kielce University of Technology, Faculty of Civil Engineering and Architecture, Department of Transportation Engineering
Grzegorz Mazurek Mail
Kielce University of Technology, Faculty of Civil Engineering and Architecture, Department of Transportation Engineering

Abstract

The paper presents results of research according to American MSCR procedures specifying the bitumen creep under dynamic loading. This method allows, on the basis of the characteristics of the binder, to predict the possibility of the forming of permanent strain in the layer at the high ambient temperatures and at low and high shear stresses. The study was performed for bitumen 35/50 and 50/70 which were subjected to modification by means of synthetic wax derived from the synthesis of Fischer-Tropsch (FT) in amounts of 1.5%, 2.5% and 3.5%. Assessment of the impact of synthetic wax on the basic properties of bitumen was enriched with quantitative analysis of the morphology by using a fluorescent microscope. The study of asphalt concrete AC 11 S was performed with modified bitumen. Asphalt concrete was compacted at temperatures of 115°C, 130°C and 145°C as well. Based on the analysis of results the conclusions were drawn concerning the impact of modified bitumen on the elastic stiffness modulus at temperatures of 2°C and 20°C.

Keywords


asphalt concrete, bitumen creep, MSCR, resilient stiffness modulus, synthetic wax

Full Text:

PDF PDF

References


Judycki J., Dołżycki B.: Analiza deformacji trwałych nawierzchni asfaltowych na podstawie badań terenowych i laboratoryjnych. VIII Konferencja Naukowa KILiW PAN i Komitetu Nauki PZITB „Inżynieria komunikacyjna”, Krynica, 4, 2002, 201 - 208

GDDKiA, WT 2 2010 – Wymagania Techniczne. Nawierzchnie asfaltowe na drogach krajowych, Załącznik Nr 2 do Zarządzenia Nr 102, Warszawa, 2010

Edwards Y., Redelius P.: Rheological effects of waxes in bitumen. Energy & Fuels, 145, 2003, 42 - 82

Lu X., Langton M., Redelius P.: Wax morphology in bitumen. Journal of Materials Science, 40, 8, 2005, 1893 - 1900

Michon L.C., Netzel D.A., Planche J.P.: NMR and DSC study of the amorphous and crystalline phases in asphalt. Energy & Fuels, 13, 3, 1999, 602 - 610

Lu X., Redelius P.: Compositional and structural characterization of waxes isolated from bitumens. Energy & Fuels, 20, 2, 2006, 653 - 660

Polacco G., Filippi S., Paci M.: Structural and rheological characterization of wax modified bitumens. Fuel, 95, 2012, 407 - 416

Butz T.: Warm Mix Asphalt – Technologies, Research and Experience. Sasol Wax GmbH

http://www.pkd.org.pl/pliki/referaty/butz.pdf

Silva H., Oliviera J., Peralta J., Zoorob S., Optimization of warm mix asphalts using different blends of binders and synthetic paraffin wax contents. Construction and Building Materials, 24, 9, 2010, 1621 - 1631

Merusi F., Giuliani F.: Rheological characterization of wax-modified asphalt binders at high service temperatures. Materials and Structures, 44, 10, 2011, 1527 - 1538

Product Information. The Bitumen Additive for Highly Stable Easy Compatible Asphalts, 2008

Bahia H.U.: Modeling of Asphalt binder Rheology and Its application to Modified Binders, in: Modeling of Asphalt Concrete. ASCE Press, McGraw-Hill Construction, New York, 2004, 11 - 64

Office of Pavement Technology. The Multiple Stress Creep Recovery (MSCR) Procedure, Technical-Brief, FHWA-HIF-11-038, April 2011

Iwański M., Mazurek G.: Water and Frost Resistance of Asphalt Concrete Produced in the Warm Technology. 10th International Conference Modern Building Materials. Structures and Techniques in Vilnius, 19-21 May, 2010, 200 - 206

Sybilski D.: Zero-shear viscosity of bituminous binder and its relation to bituminous mixture’s rutting resistance.Transportation Research Record, 1535, 1996, 15 - 21

Montgomery D.G.: Design and Analysis of Experiments. 5th Edition, John Wiley and Sons, New York, 2001, 45 -51

Szydłowski H.: Międzynarodowe normy oceny niepewności pomiarów. Postępy Fizyki, Wydział Fizyki Uniwersytetu Adama Mickiewicza, 51, 2, 2000, 92 - 97


Synthetic wax effect on the resilient stiffness modulus of asphalt concrete

  
Iwański, Marek; Mazurek, Grzegorz. Synthetic wax effect on the resilient stiffness modulus of asphalt concrete. Roads and Bridges - Drogi i Mosty, [S.l.], v. 11, n. 3, p. 233-248, apr. 2012. ISSN 2449-769X. Available at: <>. Date accessed: 17 Jul. 2019.