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Author:

Wu, J. (Wu, J..) | Wang, F.-Z. (Wang, F.-Z..) | Hu, S.-G. (Hu, S.-G..) | Li, Y. (Li, Y..)

Indexed by:

Scopus PKU CSCD

Abstract:

The interfacial bond strength between aggregate and cement paste was changed by using different interface-treating technology for researching the effect of aggregate-cement paste interface on the stress-strain curve, fracture energy and crack propagation model of concrete. The study shows that enhancing the aggregate-cement paste interface can increase the compressive strength but decrease the toughness of concrete. Weakening the rough aggregate-cement paste interface can increase the strength with decreasing the tougthness of concrete at the same time. However, weakening the fine aggregate-cement paste interface can increase the fracture energy of concrete, the reason of which is that the initial imperfection in concrete induces the macro discrete crack into smeared crack that dispersed in the mortar, which can increase the effective crack length and the fracture process zone, so the deformation performance of concrete was improved obviously.

Keyword:

Aggregate-cement paste interface; Crack; Damage and fracture; Fracture energy; Stress-strain curve

Author Community:

  • [ 1 ] [Wu, J.]College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China
  • [ 2 ] [Wang, F.-Z.]State Key Laboratory for Silicate Building Materials, Wuhan University of Technology, Wuhan 430070, China
  • [ 3 ] [Hu, S.-G.]State Key Laboratory for Silicate Building Materials, Wuhan University of Technology, Wuhan 430070, China
  • [ 4 ] [Li, Y.]College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China

Reprint Author's Address:

  • [Wu, J.]College of Materials Science and Engineering, Wuhan Textile University, Wuhan 430200, China

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Source :

Journal of Beijing University of Technology

ISSN: 0254-0037

Year: 2013

Issue: 6

Volume: 39

Page: 892-896

Cited Count:

WoS CC Cited Count: 0

SCOPUS Cited Count:

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 9

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