Characterisation of crumb rubber modifier using solid-state nuclear magnetic resonance spectroscopy

Crumb rubber (CR) can be used for binder modification or aggregate replacement in asphalt mixtures for road construction, when it is usually referred to as CR modifier (CRM). CRM elastic properties depend on the quality of parent material and storage conditions of final material. They deteriorate in time due to degradation processes and among other things they can influence CRM swelling capacity during asphalt rubber preparation. The presented paper demonstrates the sensitivity of basic nuclear magnetic resonance (NMR) parameters (proton spin-lattice relaxation time T1, proton spin–spin relaxation time T2 and the line broadening in 13C NMR and 1H NMR spectra) for detecting changes in CRM degradation. These NMR parameters are proposed to be used to assess CRM degradation before application in asphalt mixtures. In laboratory conditions, CRMs with different degrees of degradation were prepared by thermal aging at 85°C for 0–36 days.

• Record URL:
  • https://doi.org/10.1080/14680629.2013.837835
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/14680629
• Supplemental Notes:
  • Abstract reprinted with permission from Taylor & Francis.
• Authors:
  • Kovalakova, Maria
  • Fricova, Olga
  • Hronský, Viktor
  • Olčák, Dušan
  • Mandula, Ján
  • Salaiová, Brigita
• Publication Date: 2013-12

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Pagination: pp 946-958
• Serial:
  • Road Materials and Pavement Design
  • Volume: 14
  • Issue Number: 4
  • Publisher: Taylor & Francis
  • ISSN: 1468-0629
  • EISSN: 2164-7402
  • Serial URL: http://www.tandfonline.com/loi/trmp20

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Crumb rubber; Elasticity (Mechanics); Nuclear magnetic resonance; Spectroscopy; Thermal degradation
• Subject Areas: Design; Highways; Materials; I22: Design of Pavements, Railways and Guideways; I31: Bituminous Binders and Materials; I33: Other Materials used in Pavement Layers;

Filing Info

• Accession Number: 01502387
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 23 2013 11:07AM