FLEXURAL BEAM FATIGUE PROPERTIES OF AIRFIELD ASPHALT MIXTURES CONTAINING STYRENE-BUTADIENE BASED POLYMER MODIFIERS

This paper demonstrates that the choice of a polymer-modifier may have significant impact on fatigue properties and may need important consideration for the selection of an appropriate modifier for an airfield project. Additionally, it underscores the need for establishing a binder test that can delineate the effects of binder on the mix. For optimum economy of use, selection of an asphalt modifier that provides resistance to multiple distresses (rutting, fatigue, thermal cracking, water damage, etc...) is desirable. Several polymer modified asphalt binders were selected and a mix design conducted for a heavy-duty airfield according to US Army Corps of Engineers specifications. Testing focused on elastomeric styrene-butadiene polymers (a chemically-modified crumb rubber, MCR; styrene-butadiene rubber, SBR; reactive styrene-butadiene crosslinked polymer, SB; styrene-butadiene-styrene linear block copolymer, SBS; and a proprietary modified SBS, MSBS). Results indicated significant differences in modulus, phase angle, and cycles to failure (defined as 50% of initial stiffness) between the control and several of the modified mixtures. The SB modified mixtures demonstrate the highest fatigue lives of the mixtures studied in this work. Although the results for modifiers differ significantly, caution must be exercised in extending the results of this work to other asphalts containing these polymers. For the covering abstract see ITRD E117423.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/2912143357
• Corporate Authors:

  RILEM PUBLICATIONS S.A.R.L

  157 RUE DES BLAINS
  BAGNEUX,   France  F-92220
• Authors:
  • Newman, J K
• Conference:
  • PERFORMANCE TESTING AND EVALUATION OF BITUMINOUS MATERIALS PTEBM'03. PROCEEDINGS OF THE 6TH INTERNATIONAL RILEM SYMPOSIUM HELD ZURICH, SWITZERLAND, 14-16 APRIL 2003
• Publication Date: 2003

Language

• English

Media Info

• Features: References;
• Pagination: p. 357-63

Subject/Index Terms

• TRT Terms: Airport runways; Bitumen; Conferences; Fatigue (Mechanics)
• Uncontrolled Terms: Modifications
• ITRD Terms: 4963: Bitumen; 8525: Conference; 5579: Fatigue (mater); 9048: Modification; 1038: Runway
• Subject Areas: Aviation; Pavements;

Filing Info

• Accession Number: 00943376
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• ISBN: 2-912143-35-7
• Files: ITRD, ATRI
• Created Date: Jun 11 2003 12:00AM