Influence of character of clinker on the early hydration process and rheological property of cement paste

Uchikawa, Hiroshi; Ogawa, Kenji; Uchida, Shunichiro

doi:10.1016/0008-8846(85)90053-5

Cited by 50 publications

(13 citation statements)

References 6 publications

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“…This deagglomeration could then heighten the accessibility of the alkali ions to the pore solution. Increase soluble alkali content has been shown to increase the rheological properties of pastes [61][62]. This is consistent with the trend seen in Figure 18, in which the mixture containing the highest measured alkali ions displayed the greatest apparent viscosity.…”

Section: Changes In the Chemical Environment Of Cement Pastesupporting

confidence: 86%

Influence of high mixing intensity on rheology, hydration, and microstructure of fresh state cement paste

Han

Ferron

2016

Cement and Concrete Research

100

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From both the fundamental and applied points of view, there is a growing interest in characterizing the rheological properties of concentrated suspensions, such as cement paste. When a cement paste is sheared, its intrinsic network structure will respond to the shear induced stresses. The influence of mixing intensity on the rheological properties of fresh state cement paste is studied. The results showed that contrary to what is popularly believed, when subjected to a high mixing intensity the rheological properties of cement paste can increase once a certain threshold mixing intensity is achieved. This increase in rheological properties was associated with changes in the chemical nature and physical nature of the cement pastes.

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Section: Changes In the Chemical Environment Of Cement Pastesupporting

confidence: 86%

Influence of high mixing intensity on rheology, hydration, and microstructure of fresh state cement paste

Han

Ferron

2016

Cement and Concrete Research

100

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“…The subsequent secondary increase has been clearly identified in the literature as being caused by alite hydration with CH and C-S-H precipitation [30]. Within this context it is suggested that ettringite formation might play a role in the stiffening of the paste, while the main contributions are likely caused by alite hydration (CH and C-S-H formation), in line with previous results [13,18]. This linearity is in line with previous research by the authors [13].…”

Section: Anhydritesupporting

confidence: 89%

“…Jakob et al relate the time dependent stiffening of fresh cement paste to the formation of ettringite on particle surfaces and found a good correlation between the amount of ettringite and the change in a viscosity parameter of the paste [17]. This finding is in line with results by Uchikawa et al [18], who stated that the rheological properties of fresh cement pastes are governed in the early hydration stages by the formation of ettringite and later by C-S-H formation. Additionally, the formation of syngenite impacts the shear behavior of fresh cement pastes [19].…”

Section: Introductionsupporting

confidence: 69%

The Influences of Cement Hydration and Temperature on the Thixotropy of Cement Paste

et al. 2020

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The rheological properties of fresh cement paste are highly influenced by a large number of parameters, among which the most important factors are the applied shear stress, and the shear history, the age of the sample and the temperature. The effects of these parameters on the yield stress (designated as structural limit stress in this work), the viscosity and the structural recovery rate (i.e., the change in dynamic viscosity with time at rest) were studied. In parallel, the changes in ion composition of the carrier liquid, mineral phase content and granulometry were investigated. The results reveal that all investigated rheological parameters exhibit an approximated bi-linear trend with respect to the degree of hydration, with a period of quasi-constant properties until a degree of hydration of approximately 0.07, followed by a non-linear increase. This increase could be attributed to the formation of calcium hydroxide (CH) and calcium-silicate-hydrate (C-S-H) via calorimetry results. With regard to the effect of the shear history of the sample on the rheological properties, the structural limit stress showed a minor dependency on the shear history immediately after the end of shearing, which, however, vanished within the first minute at rest. The same is true for the structural recovery rate. The presented results give detailed insights into the influences of hydration and shear on the rheological properties-especially the thixotropy-of fresh cement pastes.

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“…Other investigations [14][15][16][17][18][19] showed the dependence of rheological properties of cement pastes on cement and hydration characteristics (specific surface area of cement, clinker and set regulator reactivity etc.). Several authors [15,20] suggested that formation of short prismatic ettringite increases the interparticle interaction and this leads to an increased viscosity of the cement paste.…”

Section: Introductionmentioning

confidence: 99%

Influence of hydration on the fluidity of normal Portland cement pastes

Rößler

Eberhardt

Kučerová

et al. 2008

Cement and Concrete Research

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The rheological properties of cement paste in dependence on variation of cement characteristics (chemical and physical properties) are widely discussed in literature. Only a few studies show how the cement hydration products influence the fluidity of the pastes. Results presented here contribute to a better understanding of cement hydration and fluidity. To induce the formation of certain hydration products we systematically modified the cement composition by adding alkali sulphates. Furthermore results of rheology, phase analysis and microstructural investigations were combined in order to reveal the influence of hydration products on the fluidity of the cement paste. Thereby it is shown how the growth of long prismatic crystals like syngenite decreases paste fluidity. The increase in fluidity during continuous stirring is attributed to microstructural changes.

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Influence of character of clinker on the early hydration process and rheological property of cement paste

Cited by 50 publications

References 6 publications

Influence of high mixing intensity on rheology, hydration, and microstructure of fresh state cement paste

Influence of high mixing intensity on rheology, hydration, and microstructure of fresh state cement paste

The Influences of Cement Hydration and Temperature on the Thixotropy of Cement Paste

Influence of hydration on the fluidity of normal Portland cement pastes

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