Mode I fracture behavior of concrete with rice husk ash
2002
Ishiguro, S. (Mie Univ., Tsu (Japan). Faculty of Bioresources)
The load-displacement curves for concrete containing up to 30 % rice husk ash (RHA) by weight of the total cementing material were measured using notched cubic specimens and wedge splitting procedures. The influences of RHA content on fracture properties, such as the specific fracture energy, tension softening diagram, compressive, tensile and flexural strengths, were investigated from the experimental results. The observed differences in the fracture behavior between control and RHA concrete were also analyzed and discussed. The results showed that the behavior in the specific fracture energy was significantly different from the behavior in the compressive or flexural strengths of the concrete. The tension softening diagrams obtained by the trilinear approximation method agreed well with those determined using the polylinear inverse analysis method.
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