MAGNETIC RESONANCE IMAGING OF CRACK FORMATION IN HYDRATED CEMENT PASTE MATERIALS

A magnetic resonance imaging (MRI) methodology used to spatially resolve cracking in hydrated cement pasties presented in this paper. The method is based on the relatively long spin-lattice (T1) and spin-spin relaxation (T2) times (magnetic resonance signal lifetimes) associated with water-filled cracks. Water-filled capillary and gel pores have much shorter signal lifetimes. As a noninvasive method, the technique may be used to study crack formation and propagation in well-controlled laboratory test samples. The method is proven to be capable of spatially resolving crack structures with widths of tens of micrometers.

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• Corporate Authors:

  Elsevier

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• Authors:
  • Young, J J
  • Szomolanyi, P
  • Bremner, T W
  • Balcom, B J
• Publication Date: 2004-8

Language

• English

Media Info

• Features: Figures; References;
• Pagination: 8 p.
• Serial:
  • Cement and Concrete Research
  • Volume: 34
  • Issue Number: 8
  • Publisher: Elsevier
  • ISSN: 0008-8846
  • Serial URL: http://www.sciencedirect.com/science/journal/00088846

Subject/Index Terms

• TRT Terms: Cement paste; Cracking; Detection and identification; Hydration; Image processing; Life cycle analysis; Magnetic properties; Methodology; Pore size distribution; Resonance; Signals; Structures; Water
• Subject Areas: Bridges and other structures; Highways; Materials; I32: Concrete;

Filing Info

• Accession Number: 00983086
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 9 2004 12:00AM