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Fracture toughness of cement paste and mortars

✍ Scribed by J.H. Brown; C.D. Pomeroy

Publisher
Elsevier Science
Year
1973
Tongue
English
Weight
280 KB
Volume
3
Category
Article
ISSN
0008-8846

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✦ Synopsis

The effective fracture toughness of a range of cement pastes and mortars have been measured using both a notched beam and a doublt cantilever beam method. The influence of slze and quality of aggregate on the effective toughness has been studied as the cracks advance. The observed values of fracture toughness are dependent on crack velocity. Dle effektlve Bruchzahlgkeit wurde an elner Relhe unterschledlicher Zementstein-und Horcelproben bestl-,,t. Bel den Versuchen fanden gekerbte Blegebalken sowle ZerrelSproben (Doppel-Eantllever) Verwendung. Der Elnfluss yon Gr~Se und Eigenschaft der Zuschl~ge auf die effektlve Bruchzahlgkelt wurde mlt fortschreltender El~ausbreitung untersucht. Die beobachteten Werte fur die Bruch-z~hlgkelt slnd vonder RiSgeschwlndlgkelt abh~nglg.

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