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High-strain-rate behavior of hydrated cement pastes

✍ Scribed by I. Jawed; G. Childs; A. Ritter; S. Winzer; T. Johnson; D. Barker

Publisher
Elsevier Science
Year
1987
Tongue
English
Weight
401 KB
Volume
17
Category
Article
ISSN
0008-8846

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✦ Synopsis

The stress-strain behavior of cement pastes, hydrated for 28 days, over a range of strain rates (from almost static to 103 sec -I) has been investigated. At low strain rates (<250 sec -I) the ultimate stress increases with increase in strain rate, whereas at high rates (>250 sec -1) it reaches a limiting value. The stress behavior appears to correlate with the porosity of the system. Examination of the fracture surface suggests that fracture occurs preferentially through the C-S-H phase of the hydrated cement.

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