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A discussion of the paper: The estimation of fracture surface energy as a measure of the “toughness” of hardened cement paste by K.L. Watson

✍ Scribed by Y.W. Mai

Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
190 KB
Volume
9
Category
Article
ISSN
0008-8846

No coin nor oath required. For personal study only.

✦ Synopsis

I have read with great interest Dr. Watson's paper on the fracture toughness measurement of hardened cement paste by the work of fracture method (1) using deep edge notched specimens with a large span/depth ratio. While his proposal is sound and based on experimental facts I would like to suggest the following two Points for his consideration and I hope these ideas could be useful in analysis of any future experimental results. The first deals with the work of fracture method and whether it can provide a useful fracture mechanics parameter such as the critical stress intensity factor (K c) and the critical strain energy release rate (Gc). The second is on the possibility of using an alternative method -the quasi-static crack propagation concept (2-5) -to measure fracture toughness of cement paste.

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