Searched for: subject%3A%22cementitious%255C%2Bmaterials%22
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Chen, Y. (author), He, S. (author), Gan, Y. (author), Copuroglu, Oguzhan (author), Veer, F.A. (author), Schlangen, E. (author)
This paper aims to provide a systematical review of the available printing strategies, sustainable cementitious materials and characterization methods for extrusion-based 3D concrete printing (3DCP). The printing strategies, consisting of printing setup, process, and material requirements, were summarized initially. In the material aspect,...
journal article 2022
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Wu, Zixia (author)
This research focuses on developing architected lightweight cementitious cellular composites (LCCCs) for potential thermal insulation purposes. Specifically, Voronoi cellular structures with different randomness are adopted and used as cellular structure of the LCCCs. the mechanical properties of the developed LCCCs are investigated by...
master thesis 2021
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Rostami, R. (author), Klemm, A.J. (author)
The use of Supplementary Cementitious Materials (SCMs) in concrete manufacture has significantly increased in the last decades mainly due to their sustainability benefits. Polymeric Fibres (PF) are commonly used in concrete in order to enhance adhesive and frictional bond with a cementitious matrix and improve mechanical properties. Despite...
conference paper 2021
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Zhuang, Shiyu (author), Wang, Qiang (author)
Water absorption is an indicator of other transport properties and even durability of concrete since it provides a dominant invasion mechanism for the penetration of aggressive ions. Relationship between the water absorption and the chloride ion penetration of concrete containing fly ash, slag and silica fume at various water-to-binder ratios is...
conference paper 2021
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Scrivener, Karen (author), Georget, Fabien (author), Wilson, William (author), Sui, Shiyu (author)
Cementitious Materials become more diverse. In particular, to reduce the CO2 emissions associate with production, it is necessary to increase the levels of replacement of clinker by other materials. A critical consideration is to know how durable different materials will be. Most forms of degradation involve the ingress of different species into...
conference paper 2021
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Phung, Quoc Tri (author), Seetharam, Suresh .C. (author), Ferreira, Eduardo (author), Govaerts, Joan (author), Hendrix, Katrien (author), Valcke, Elie (author)
This paper presents an extension of an existing phenomenological model for predicting the evolution of hydration heat of a cemented waste form. The cemented waste form is essentially a mixture of blended cement and homogeneous low- and intermediate-level liquid (simulant) radioactive waste (sludge). The motivation stems from the fact that the...
conference paper 2021
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Chen, Y. (author), Copuroglu, Oguzhan (author), Romero Rodriguez, C. (author), França de Mendonça Filho, F. (author), Schlangen, E. (author)
For many 3D printed cementitious materials, air voids may play a dominant role in the interlayer bond strength. However, to date, far too little attention has been paid to reveal the air void characteristics in 3D printed cementitious materials. Therefore, to fill this gap, this study attempts to provide an example of systematically...
journal article 2021
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Beglarigale, Ahsanollah (author), Eyice, Doğa (author), Seki, Yoldaş (author), Yalçinkaya, Ç. (author), Copuroglu, Oguzhan (author), Yazici, Halit (author)
In this study, stirring speeds during the synthesizing process of the sodium silicate/polyurethane microcapsules were optimized. The yield values of microcapsules at different stirring rates were evaluated. Based on the yield values and shape of microcapsules, optimized microcapsules were obtained. The measurements of the shell thickness of...
journal article 2021
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Wu, Xintong (author), Huang, Haoliang (author), Liu, Hao (author), Hu, Jie (author), Wei, Jiangxiong (author), Jiang, Zhengwu (author), Ye, G. (author), Yu, Qijun (author), Lothenbach, Barbara (author)
New self-healing agents that can chemically bind seawater ions invading cracked cementitious materials were proposed. The potential of self-healing and binding of seawater ions were investigated by thermodynamic modeling. It was found that CaO-NaAlO<sub>2</sub> and CaO-metakaolin agents can have Cl<sup>−</sup>, SO<sub>4</sub><sup>2−</sup> and...
journal article 2021
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Chen, Y. (author), He, S. (author), Zhang, Y. (author), Wan, Z. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author)
This paper aims to investigate the influences of high Portland cement substitutions (&gt;60 wt%) by low-grade calcined clay (CC) and limestone (LF) on 3D concrete printability, stiffness evolution and early-age hydration. Results show that, with the same dosage of admixtures (superplasticizer and viscosity modifier), increasing LF and CC...
journal article 2021
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Chajec, Adrian (author), Chowaniec, Agnieszka (author), Królicka, Aleksandra (author), Sadowski, Łukasz (author), Żak, Andrzej (author), Piechowka-Mielnik, Magdalena (author), Šavija, B. (author)
Siliceous fly ash can be applied as a cement replacement material for mortars used in cement-based floor overlays. At present, there is no knowledge of the appropriate curing conditions that need to be applied on concrete floors. Moreover, previous research related to curing conditions has left research gaps related to the conditions in which...
journal article 2021
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Wu, Zixia (author), Xu, Y. (author), Šavija, B. (author)
This work focuses on combining digitally architected cellular structures with cementitious mortar incorporating micro-encapsulated phase change material (mPCM) to fabricated lightweight cementitious cellular composites (LCCCs). Voronoi structures with different randomness are designed for the LCCCs. Aided by the indirect 3D printing technique,...
journal article 2021
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Krstic, M. (author), Davalos, Julio F. (author), Rossi, E. (author), Chaves Figueiredo, S. (author), Copuroglu, Oguzhan (author)
Recent studies have shown promising potential for using Glass Pozzolan (GP) as an alternative supplementary cementitious material (SCM) due to the scarcity of fly ash and slag in the United States. However, comprehensive studies on the freeze-thaw (FT) resistance and air void system of mixtures containing GP are lacking. Therefore, this study...
journal article 2021
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von Greve-Dierfeld, Stefanie (author), Lothenbach, Barbara (author), Vollpracht, Anya (author), Wu, B. (author), Huet, Bruno (author), Andrade, Carmen (author), Medina, César (author), Thiel, Charlotte (author), Gruyaert, Elke (author), Vanoutrive, Hanne (author)
Blended cements, where Portland cement clinker is partially replaced by supplementary cementitious materials (SCMs), provide the most feasible route for reducing carbon dioxide emissions associated with concrete production. However, lowering the clinker content can lead to an increasing risk of neutralisation of the concrete pore solution and...
journal article 2020
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Zhang, Y. (author), Yang, Zhengxian (author), Ye, G. (author)
Conceptual analysis is performed to examine the effects of pore features on the water continuity in unsaturated porous systems. The roles of pore features in relative chloride diffusion coefficient (D<sub>rc</sub>) of mortar specimens at various degrees of water saturation (S<sub>w</sub>) were studied based on mercury intrusion porosimetry...
journal article 2020
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Zhang, Y. (author), Ye, G. (author), Yang, Zhengxian (author)
Microstructure-property relationship has drawn strong attention in modern material science. The progress achieved in this field relies on a common basis that the material performance originates from the microstructure. This paper brings together new insights and facts from experiments regarding the pore size dependent connectivity and its...
journal article 2020
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Zhang, Y. (author), Ye, G. (author), Yang, Zhengxian (author)
Concrete is rarely saturated. Reliable durability design of marine concrete structures requires a solid understanding of the long-term chloride transport in unsaturated concretes. This paper presents a critical analysis of the time-dependent chloride diffusion coefficient in unsaturated cementitious materials exposed to marine environment....
journal article 2020
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Chen, Y. (author), Romero Rodriguez, C. (author), Li, Z. (author), Chen, B. (author), Copuroglu, Oguzhan (author), Schlangen, E. (author)
This study aims to investigate the influences of different grades of calcined clay on 3D printability, compressive strength (7 days), and hydration of limestone and calcined clay-based cementitious materials. Calcined clays that contained various amounts of metakaolin were achieved by blending low-grade calcined clay (LGCC) and high-grade...
journal article 2020
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Xu, Y. (author), Zhang, H. (author), Schlangen, E. (author), Lukovic, M. (author), Šavija, B. (author)
Auxetic behavior refers to material with negative Poisson's ratio. In this research, a new type of cementitious auxetic material is developed. A novel crack bridging auxetic mechanism is discovered which is in contrast with a local buckling mechanism commonly employed to trigger auxetic behavior. Taking advantage of 3D printing techniques,...
journal article 2020
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Xu, Y. (author), Schlangen, E. (author), Šavija, B. (author)
Mechanical behavior of cementitious cellular composites (CCC) with auxetic behavior was investigated under uniaxial compression and cyclic loading. Three cellular structures with different geometrical parameters are designed and prepared by 3D printing technique. Meanwhile, plain mortar and fiber reinforced mortar are used as constituent...
book chapter 2020
Searched for: subject%3A%22cementitious%255C%2Bmaterials%22
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