Mechanical and microstructural investigation of the aggregate and cement interface

Zongjin Li*, Surendra P. Shah, Matthew J. Aquino

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations


Due to the fact that the understanding of the interface between aggregate and cement is crucial in determining the properties of concrete, a pushout experimental technique and a theoretical model were developed to determine several material parameters such as stiffness, strength and surface energy of the interface layer. By examining the effect of diameter and embedment length of aggregate, the validity of these material parameters was verified. The effect of pretreatment of aggregate surface and various admixtures were also accounted for. The microstructure of the interface was characterized using backscattered electron imaging and energy dispersive analysis of x-rays (EDAX). By studying the relationship between mechanical properties and microstructure of interfacial zone, it was observed that the microstructure of the interface plays an important role in the mechanical behaviour of the aggregate/cement bond.

Original languageEnglish (US)
Pages (from-to)319-328
Number of pages10
JournalMaterials Research Society Symposium - Proceedings
StatePublished - 1995
EventProceedings of the 1994 MRS Fall Meeting - Boston, MA, USA
Duration: Nov 28 1994Nov 30 1994

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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