Journal article
E-modulus evolution and its relation to solids formation of pastes from commercial cements
Models for early age E-modulus evolution of cement pastes are available in the literature, but their validation is limited. This paper provides correlated measurements of early age evolution of E-modulus and hydration of pastes from five commercial cements differing in limestone content. A recently developed methodology allowed continuous monitoring of E-modulus from the time of casting.
The methodology is a variant of classic resonant frequency methods, which are based on determination of the first resonant frequency of a composite beam containing the material. The hydration kinetics — and thus the rate of formation of solids — was determined using chemical shrinkage measurements. For the cements studied similar relationships between E-modulus and chemical shrinkage were observed for comparable water-to-binder ratio.
For commercial cements it is suggested to model the E-modulus evolution based on the amount of binder reacted, instead of the degree of hydration.
Language: | English |
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Year: | 2012 |
Pages: | 928-936 |
ISSN: | 18733948 and 00088846 |
Types: | Journal article |
DOI: | 10.1016/j.cemconres.2012.03.013 |
ORCIDs: | Geiker, Mette |