Indexed by:
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:
Reprint Author's Address:
Email:
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
Affiliated Colleges: