Searched for: subject%3A%22Thixotropy%22
(1 - 16 of 16)
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Guo, Z. (author), Qiu, Jingping (author), Jiang, Haiqiang (author), Zhu, Qiang (author), Wang Kwek, Jin (author), Ke, Lin (author), Qu, Zhengyao (author)
The fresh superfine-tailings cemented paste backfill (SCPB) exhibits strong thixotropy, but quantification of the resulting transient flow (non-steady state) and time-dependent yield stress is lacking. In this study, a simple qualitative model was developed to describe the transient flow and time-dependent yield stress of SCPB. The effect of...
journal article 2023
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Sun, Yubo (author), Ghorbani, Saeid (author), Ye, G. (author), De Schutter, Geert (author)
Alkali-activated material (AAM) is developed as a green alternative binder to replace Portland cement (PC) in the construction field. However, the large-scale application with AAM concrete is limited so far, with the insufficient knowledge of rheological behavior being a major obstruct. Thixotropy of concrete is of great interest, which can...
book chapter 2023
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Shakeel, A. (author), Zander, F. (author), de Klerk, Jan‑Willem (author), Kirichek, Alex (author), Gebert, J. (author), Chassagne, C. (author)
Purpose<br/>The presence of organic matter in cohesive sediment results in the formation of clay-organic flocs, which eventually impart complex rheological behavior including shear-thinning, viscoelasticity, thixotropy and two-step yielding to mud. In this study, the influence of microbial degradation of sediment organic matter on the...
journal article 2022
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Goda, Aditya (author)
When a ship reaches the shore, the water depth reduces and thus the under-keel clearance also reduces. The ship keel clearance influences the maneuverability of the sailing ship.<br/><br/>In this thesis project, the link between the fluid mud rheology and its density is first investigated. The exponential relation reformulated between the...
master thesis 2021
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Wei, P. (author), Uijttewaal, W.S.J. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)
Accurate rheological characterisation of sewage waste activated sludge (WAS) is of high importance for downstream processing related to optimised sludge pumping and mixing, assessment of energy demands and overall process design. However, to elaborate rheological behaviour is often challenging under dynamic operational conditions in practice....
journal article 2021
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Hermidas, N. (author)
Submarine gravity flows constitute the last link in the source-to-sink sediment transport chain. They are the main mechanism for the transportation of sediment from the shallower to the deeper parts of the ocean. Due to their great volume, mobility, and power, they pose a formidable threat to the offshore infrastructures, and can generate...
doctoral thesis 2019
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Panda, Biranchi (author), Noor Mohamed, Nisar Ahamed (author), Chandra Paul, Suvash (author), Bhagath Singh, GVP (author), Tan, Ming Jen (author), Šavija, B. (author)
The advent of digital concrete fabrication calls for advancing our understanding of the interaction of 3D printing with material rheology and print parameters, in addition to developing new measurement and control techniques. Thixotropy is the main challenge associated with printable material, which offers high yield strength and low viscosity....
journal article 2019
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Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author)
Purpose: An innovative way to define navigable fluid mud layers is to make use of their rheological properties, in particular their yield stress. In order to help the development of in situ measurement techniques, it is essential that the key rheological parameters are estimated beforehand. Is there only one yield stress? In which shear rate...
journal article 2019
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Shakeel, A. (author), Kirichek, Alex (author), Chassagne, C. (author)
Mud is a cohesive material which contains predominantly clay minerals, water, organic matter and some amounts of silt and sand. Mud samples can have complex rheological behaviour, displaying viscoelasticity, shear-thinning, thixotropy and yield stress. In this study, influence of organic matter on the rheological behaviour of different mud...
journal article 2019
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Wei, P. (author), Tan, Qiuman (author), Uijttewaal, W.S.J. (author), van Lier, J.B. (author), de Kreuk, M.K. (author)
For a proper operational performance assessment of excess sewage sludge digesters in practice, a better understanding of waste activated sludge (WAS) rheological behaviour is important, especially regarding the low-shear and poor mixing zones in anaerobic digesters. The potential rheological instability of WAS with different total solids (TS)...
journal article 2018
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Anindito Kusumojati, Anindito (author)
Subjectivity, lack of precision, and accuracy are the challenges in the spasticity clinical measurement. One of the causes is the unwell standardization of the measurements that cause temporary changes in muscle resistance termed as muscle thixotropy. This temporary changes can affect the accuracy of the result that may lead to a wrong diagnosis...
master thesis 2018
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Zhang, Y. (author), Ye, G. (author)
In this paper, a new analytic model for predicting chloride diffusivity in unsaturated cementitious materials is developed based on conductivity theory and Nernst-Einstein equation. The model specifies that chloride diffusivity in unsaturated cementitious materials can be mathematically described as a function of chloride diffusivity in...
conference paper 2017
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Schipper, H.R. (author), Grunewald, S. (author), Troian, S. (author), Raghunath, P. (author), Schlangen, E. (author), Copuroglu, Oguzhan (author)
Expensive CNC (computer numerical controlled)-milled formwork is required for the production of double-curved precast concrete elements for cladding or shell structures. The innovative flexible mould method for economically efficient and sustainable production of such elements, developed at Delft University of Technology, comprises the use of a...
conference paper 2017
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Nahar, S.N. (author), Schmets, A.J.M. (author), Kasbergen, C. (author), Schitter, G (author), Scarpas, Athanasios (author)
Self-healing of bitumen is a property that positively contributes to the sustainability, maintenance requirements and cost effectiveness of asphalt pavements. Ideally one would like to design an asphalt mix with a well-defined healing potential. Although substantial research efforts have been dedicated to the healing mechanism in bitumen,...
conference paper 2016
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Schipper, H.R. (author)
The production of precast, concrete elements with complex, double-curved geometry is expensive due to the high costcosts of the necessary moulds and the limited possibilities for mould reuse. Currently, CNC-milled foam moulds are the solution applied mostly in projects, offering good aesthetic performance, but also resulting in waste of material...
doctoral thesis 2015
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Grunewald, S. (author), Schipper, H.R. (author), Raghunath, P. (author)
This paper describes how curved precast concrete elements can be manufactured in an open and reusable flexible mould. The proposed method reduces formwork costs of architectural freeform elements in concrete. First, the method is described briefly, then a series of tests are discussed, demonstrating that by measuring the rheological parameters...
conference paper 2013
Searched for: subject%3A%22Thixotropy%22
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