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Rheological behavior of cement pastes under Large Amplitude Oscillatory Shear
Abstract Cement pastes exhibit virtually all the rheological features of complex fluids. Thus, several rheological methods and setups have been used in the literature to characterize these materials. In the present investigation Large Amplitude Oscillatory Shear (LAOS) is for the first time exploited for cement pastes. LAOS can be used to characterize all the rheological properties within a single procedure. This technique is tested in the case of three different cement mixes: a Portland cement paste, nanoclay blended cement paste and a cement paste containing a hydro-soluble polymer. These mixes were selected in order to get rheological properties that are different both quantitatively and qualitatively. Indeed, addition of a low amount of nanoclay increased significantly the yield stress and the shear-thinning/thixotropic aspects of the cement paste, whereas addition of cellulose ether led to the decrease of yield stress and thixotropy. These non-linear rheological properties are discussed within the framework of LAOS.
Rheological behavior of cement pastes under Large Amplitude Oscillatory Shear
Abstract Cement pastes exhibit virtually all the rheological features of complex fluids. Thus, several rheological methods and setups have been used in the literature to characterize these materials. In the present investigation Large Amplitude Oscillatory Shear (LAOS) is for the first time exploited for cement pastes. LAOS can be used to characterize all the rheological properties within a single procedure. This technique is tested in the case of three different cement mixes: a Portland cement paste, nanoclay blended cement paste and a cement paste containing a hydro-soluble polymer. These mixes were selected in order to get rheological properties that are different both quantitatively and qualitatively. Indeed, addition of a low amount of nanoclay increased significantly the yield stress and the shear-thinning/thixotropic aspects of the cement paste, whereas addition of cellulose ether led to the decrease of yield stress and thixotropy. These non-linear rheological properties are discussed within the framework of LAOS.
Rheological behavior of cement pastes under Large Amplitude Oscillatory Shear
Conte, Théau (author) / Chaouche, Mohend (author)
Cement and Concrete Research ; 89 ; 332-344
2016-07-28
13 pages
Article (Journal)
Electronic Resource
English
Rheological behavior of cement pastes under Large Amplitude Oscillatory Shear
| British Library Online Contents | 2016
Rheological behavior of cement pastes under Large Amplitude Oscillatory Shear
| British Library Online Contents | 2016
Rheological behavior of cement pastes under Large Amplitude Oscillatory Shear
| British Library Online Contents | 2016
Rheological behavior of cement pastes under Large Amplitude Oscillatory Shear
| Online Contents | 2016
Rheological behavior of cement pastes under Large Amplitude Oscillatory Shear
| British Library Online Contents | 2016