Lewis, G & Tamina, B


The brittle fracture of soil-cement blocks, by G. Lewis & B. Tamina, Zambia Journal of Science and Technology, Vol.3, no.4, October 1978, Pg. 61-67.


Fracture toughness is a material property obtained by evaluating the stress intensity factory at the onset of yielding. The stress intensity factor denotes the elastic stress and displacement fields in the vicinity of the crack tip of a homogeneous material. When soil cement is analysed as such a material an effective fracture toughness is obtained. An experimental investigation leads to the conclusion that for soil-cement, fracture toughness is a material characteristic and can be used in analysing its cracking phenomenon.

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