Searched for: subject%3A%22Limestone%22
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van Selm, GertJan (author)
Due to the constant growth of global maritime shipping, the optimization of grabs used for unloading bulk carriers is more and more relevant. Especially for a coarse material like limestone, the average payload can be improved, by altering the grab design. It is suggested that the penetration and cutting depth of a grab can be improved, which...
master thesis 2023
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Chen, Y. (author), Zhang, Y. (author), He, S. (author), Liang, M. (author), Zhang, Yamei (author), Schlangen, E. (author), Copuroglu, Oguzhan (author)
Limestone-calcined clay-cement (LC3), as one of the most promising sustainable cements, has been under development over the past decade. However, many uncertainties remain regarding its rheological behaviors, such as the metakaolin content of calcined clay. This study aims to investigate the effect of increasing the content of fine-grained...
journal article 2023
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Chen, Y. (author), Zhang, Y. (author), Šavija, B. (author), Copuroglu, Oguzhan (author)
Formulation of quaternary blended system containing ordinary Portland cement or clinker, slag, limestone and calcined clay (LC2) appeared to be a viable approach to developing low-clinker cements without severely sacrificing mechanical performance at later ages. This paper investigates the effect of two material parameters, i.e., LC2-to-slag...
journal article 2023
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Chen, Y. (author), Liang, M. (author), Zhang, Y. (author), Li, Z. (author), Šavija, B. (author), Schlangen, E. (author), Copuroglu, Oguzhan (author)
Autogenous shrinkage may be a critical issue concerning the use of limestone-calcined clay-cement (LC3) in high-performance concrete and 3D printable cementitious materials, which have relatively low water to binder (W/B) ratio. Adding an internal curing agent, i.e., superabsorbent polymer (SAP), could be a viable solution in this context....
journal article 2023
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Guarnieri, Francesca (author)
master thesis 2022
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XYPOLIA, GEORGIA (author)
The “The Culture of Living” explores the idea of an urban block as an organism, where living, working and meeting activities are entangled. This exploration seeks to create a lively neighborhood, where the residents and users are the protagonists while the urban block is the stage. At the same time, this project is a continuous research on how a...
master thesis 2022
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Chen, Y. (author)
Extrusion-based 3D concrete printing (3DCP), as one of the emerging techniques, has received considerable attention from both academia and industry, due to its numerous benefits for concrete construction, through enhancing the freedom of architectural design, eliminating formwork, optimizing material use, and decreasing wastes, labors and costs....
doctoral thesis 2021
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Gonthier, Julien Nicolas (author), Wilson, William (author), Georget, Fabien (author), Scrivener, Karen (author)
The incorporation of supplementary cementitious materials (SCMs) in cement pastes enables both decreasing CO2 emissions and increasing the concrete durability, notably with a better resistance against chloride ingress and thus retarding the chlorideinduced corrosion of steel rebars. Nevertheless, a better understanding of the chloride fixation...
conference paper 2021
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Tellarini, Tommaso (author)
There’s Paulo Mendez da Rocha quote that stuck with me since I read it on my first year of Bachelor: “`Las naturaleza es una mierda`” Swiss architect Luigi Snozzi made this quote his mantra, and used to repeat it all the time to his students at the first year. “`The role of the architect is to intervene on nature, modifying it for the needs of...
master thesis 2021
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Kortram, Jon (author)
Geothermal energy is one of the more sustainable alternatives to fossil fuels that could facilitate the energy transition. The production of geothermal energy incorporates the use of corrosion inhibitors to protect the steel well-parts from the corrosive production fluid. The injection of inhibitors leads to a risk of exposing the reservoir rock...
master thesis 2020
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Stasik, Marzena (author)
The director Andrei Tarkovsky once said, “The image is not a certain meaning, expressed by director, but an entire world reflected in a drop of water.” Different memories, experiences, and imaginary worlds influence perception. Therefore, interpretations of a drop of water can differ significantly. The project is a finite work, which left the...
master thesis 2020
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Versluis, Barry (author)
Many laboratory tests of samples where the rock fractures are based on<br/>meso-scale (cm) characterization of effective ‘intact’ strength parameters neglecting the microstructure effects. Understanding fracturing processes at<br/>micro-scale (mm) will require models with microstructure data. However,<br/>data is lacking on micro-scale.<br/...
bachelor thesis 2020
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Chen, Y. (author), Chaves Figueiredo, S. (author), Li, Z. (author), Chang, Z. (author), Jansen, K. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author)
In 3D concrete printing (3DCP), it is necessary to meet contradicting rheological requirements: high fluidity during pumping and extrusion, and high stability and viscosity at rest to build the layered structure. In this paper, the impact of the hydroxypropyl methylcellulose (HPMC)-based viscosity-modifying admixture (VMA) on the 3D printability...
journal article 2020
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ter Steege, Friso (author)
The interaction between fractures and the associated effects are studied in fields like geothermal engineering, seismology, volcanology and geo-engineering. Fractures can massively influence the permeability and porosity in a rock formation, reducing resistance to flow. However, to improve permeability, multiple fractures must connect to each...
bachelor thesis 2019
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Chen, Y. (author), Yalçinkaya, Ç. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author)
Recently, our group attempted to develop the ternary blended (Portland cement, calcined clay and limestone) cementitious material for 3D concrete printing (3DCP). Due to the elimination of formwork during the layer-by-layer casting process, the printed material should have favorable elastic properties and green strength at the fresh state. A...
conference paper 2019
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Chen, Y. (author), Li, Z. (author), Chaves Figueiredo, S. (author), Copuroglu, Oguzhan (author), Veer, F.A. (author), Schlangen, E. (author)
The goal of this study is to investigate the effects of different grades of calcined clay on the extrudability and early-age strength development under ambient conditions. Four mix designs were proposed. Three of them contained high, medium, and low grades of calcined clay, respectively, and one was the reference without calcined clay. In terms...
journal article 2019
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Chen, Y. (author), Chaves Figueiredo, S. (author), Yalçinkaya, Ç. (author), Copuroglu, Oguzhan (author), Veer, F.A. (author), Schlangen, E. (author)
To investigate the effects of viscosity-modifying admixture (VMA) on the extrudability of limestone and calcined clay-based cementitious materials, three mix designs with different dosages of VMA were proposed in this study. The ram extrusion was utilized as an extrusion model for exploring the fresh properties of printable materials. Two...
journal article 2019
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Borsoi, G. (author)
Nanolimes, i.e. dispersions of lime (Ca(OH)2)nanoparticles in alcohol, have been extensively investigated over the last two decades as consolidation products for calcareous substrates.<br/>The use of nanolimes for consolidation of mural paintings arises from the lack of e ective and compatible consolidants for this type of substrates; the use of...
doctoral thesis 2017
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Ouyang, X. (author)
Fillers, such as limestone or quartz powder, are used as a replacement of Portland cement. Their application can make concrete more environment friendly and possibly cheaper. Additions of limestone or quartz powder have been reported to exert a limited chemical effect on cement hydration. The main quasi-chemical effect of added limestone and...
doctoral thesis 2017
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Dwarkasing, A.S. (author)
Hydrocarbon reservoirs are currently declining. Reservoirs are becoming depleted, and production needs to satisfy the demand and supply of hydrocarbons. For tight reservoirs such as shales, fracturing will become the main source of improving the permeability. It is therefore vital to conduct research into the behavior of fractures in the...
master thesis 2016
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