Toughening of High Performance Cement Systems: Influence of Matrix-Aggregate Binding

The link between the microstructure of materials and their mechanical properties has long been known. Recent tests have also shown that the bond between aggregate and matrix in cement mortars influences composite toughness by controlling the amount of aggregate bridging that takes place. The paper proposes that fracture toughness measurements may provide a means of assessing the strength of binding between cement matrix and aggregate. The relationship between interfacial bonding and toughness is based on the behavior of propagation cracks in a composite containing angular inclusions.The strength of binding has been found to influence the crack path in the way that weak binding enhances the frequency of interaction between the propagating crack and the crack-bridging inclusion enhancing the fracture toughness.

Language

  • English

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 403-412
  • Monograph Title: Role of Cement Science in Sustainable Development

Subject/Index Terms

Filing Info

  • Accession Number: 01003672
  • Record Type: Publication
  • ISBN: 0727732463
  • Files: TRIS
  • Created Date: Aug 31 2005 12:08PM