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Sayadi, Sina (author), Ricketts, Evan (author), Schlangen, E. (author), Cleall, Peter (author), Mihai, Iulia (author), Jefferson, Anthony (author)
Self-healing cementitious materials with microcapsules are complex multiscale and multiphase materials. The random microstructure of these materials governs their mechanical and transport behaviour. The actual microstructure can be represented accurately with a discrete lattice model, but computational restrictions mean that the size of domain...
conference paper 2023
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Kamat, Ameya (author), Palin, D. (author), Lubelli, B. (author), Schlangen, E. (author)
Plasters and renders used in historic monuments are vulnerable to degradation caused by salt weathering. Crystallisation inhibitors (molecules/ions that alter salt crystallisation) mixed into mortars have shown promising results in mitigating salt damage by inhibiting salt crystallisation, promoting salt transport to the evaporating surface, and...
conference paper 2023
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He, S. (author), Lukovic, M. (author), Jonkers, H.M. (author), Schlangen, E. (author)
In the current study, experiments were carried out to investigate the structural performance of reinforced concrete (RC) beams with a self-healing cover zone. The cover zone consists of a 1.5-cm-thick layer of bacteria-embedded strain hardening cementitious composite (SHCC) for a combination of crack width control and crack healing. The aim is...
conference paper 2023
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Huang, Y. (author), Schlangen, E. (author), Lukovic, M. (author)
Ultra-high performance fiber-reinforced concrete (UHPFRC) exhibits high compressive and tensile strength together with outstanding durability. Due to these superior properties, UHPFRC is promising for retrofitting existing reinforced concrete (RC) bridges. While research and on-site applications show the significant improvement of RC structures...
conference paper 2023
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Eslamlou, A.D. (author), Ghaderiaram, A. (author), Fotouhi, M. (author), Schlangen, E. (author)
The growing demand towards life cycle sustainability has created a tremendous interest in non-destructive evaluation (NDE) to minimize manufacturing defects and waste, and to improve maintenance and extend service life. Applications of Magnetic Sensors (MSs) in NDE of civil engineering structures have become of great interest in recent years...
conference paper 2023
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He, S. (author), Lukovic, M. (author), Schlangen, E. (author)
In the current study, experiments were carried out to investigate the cracking behaviour of reinforced concrete beams consisting of 1-cm-thick layer of Strain Hardening Cementitious Composite (SHCC) in the concrete cover zone. The hybrid SHCC/concrete beams with different types of interfaces were tested and compared with control reinforced...
conference paper 2023
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Mustafa, S. (author), Schlangen, E. (author), Lukovic, M. (author)
The construction industry is experiencing a significant increase in hybrid concrete structures due to the need for repairing/strengthening of existing structures and the development of novel hybrid structures. The crack development and the ultimate capacity of hybrid concrete structures may significantly be governed by the properties of...
conference paper 2022
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Kamat, Ameya (author), Lubelli, B. (author), Schlangen, E. (author)
Sodium chloride (NaCl) is one of the ubiquitous soluble salts in the environment and is responsible for weathering of building materials. The salt weathering is attributed to the stress developed from crystallisation of these salts in pores of the building materials, with supersaturation as the driving force. In the last years, researchers have...
conference paper 2021
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Nedeljković, Marija (author), Visser, Jeanette (author), Nijland, Timo G. (author), Valcke, Siska (author), Schlangen, E. (author)
In the Netherlands, beside cement replacement with more green cement types, there is also an urgent need for alternative materials for natural sand in new concrete in order to make it circular. Furthermore, the recyclers have raised questions regarding upscaling and the potential of fine recycled concrete aggregates (fRCA) in structural concrete...
conference paper 2021
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Romero Rodriguez, C. (author), Ye, R. (author), Varveri, Aikaterini (author), Rossi, E. (author), Anglani, Giovanni (author), Antonaci, Paola (author), Schlangen, E. (author), Šavija, B. (author)
Coupling of carbonation and chlorides ingress mechanisms is very common in concrete under certain exposure conditions such as coastal environments. The aggravation/ mitigation of corrosion by the existence of carbonation lies on the fact that microstructural changes due to carbonation result in changes on the transport properties of the material...
conference paper 2021
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Zhang, H. (author), Schlangen, E. (author), Ge, Zhi (author), Šavija, B. (author)
Properties of concrete are, to a large extent, dependent on the properties of its binding constituent, hydrated cement paste. Therefore, knowledge of properties of hydrated cement paste is crucial for predicting concrete behaviour. This paper presents an experimentally informed approach for modelling elastic and transport properties of cement...
conference paper 2021
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Figueiredo, Stefan C. (author), van Overmeir, A.L. (author), Nefs, Karsten (author), Schlangen, E. (author), Salet, Theo A. M. (author), Šavija, B. (author), Suiker, Akke S. J. (author), Bos, Freek P. (author)
Over the past few years, several studies have shown the potential of three-dimensional concrete printing (3DCP) for applications in building and civil engineering. However, only a few studies have compared the properties of the fresh printing material and the quality of the printed elements from different printing facilities. Variations in the...
conference paper 2020
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Lukovic, M. (author), Ye, G. (author), Schlangen, E. (author), van Breugel, K. (author)
Infrastructure is ageing and we are facing a serious challenge on how to deal with it. One possible solution is to repair it, but the life of current concrete repairs, including all types of repairs and application of different materials, is not satisfactory and there is an urgent need for improvement. Understanding the damage development in a...
conference paper 2019
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Romero Rodriguez, C. (author), Chaves Figueiredo, S. (author), França de Mendonça Filho, F. (author), Schlangen, E. (author), Šavija, B. (author)
The potential of using phase change materials (PCM) in cementitious materials to mitigate damage due to thermal loadings has been recently focus of intensive research. In the case of PCM with transition temperatures near to the freezing point of water, their potential to delay frost in a cementitious matrix has been largely investigated through...
conference paper 2019
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Mercuri, L. (author), Romero Rodriguez, C. (author), Xu, Y. (author), Chaves Figueiredo, S. (author), Mors, R.M. (author), Rossi, E. (author), Anglani, G. (author), Antonaci, P. (author), Šavija, B. (author), Schlangen, E. (author)
Soft inclusions, such as capsules and other particulate admixtures are increasingly being used in cementitious materials for functional purposes (i.e. self-healing and self-sensing of concrete). Yet, their influence on the fracture behaviour of the material is sometimes overlooked and requires in-depth study for the optimization of mechanical...
conference paper 2019
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Xu, Y. (author), Schlangen, E. (author), Šavija, B. (author)
Strain hardening cementitious composites are a class of cementitious materials showing metal-like (i.e. pseudo-plastic) behavior in tension due to their multiple cracking ability. This is commonly achieved through use of fiber reinforcement (such as PVA) or, similarly, textile reinforcement (TRC). Increasing the ductility is important in...
conference paper 2019
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Xu, Y. (author), Šavija, B. (author), Schlangen, E. (author)
Traditionally, mechanical properties of cementitious materials are designed<br/>“chemically”, namely by configuring their mix proportions. Owning to the development of 3D printing technology, “physical” tailoring the meso-structure of cementitious materials to design their mechanical properties becomes possible. In the present study,...
conference paper 2019
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Zhang, H. (author), Schlangen, E. (author), Šavija, B. (author)
This work aims to investigate the mechanical properties of the cement paste-aggregate interface by combining experimental and numerical approaches. The multi-phase interface microstructure was obtained by X-ray computed tomography (XCT) and submitted to a discrete fracture lattice model for fracture analysis. Apart from the modelling, a...
conference paper 2019
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Chang, Z. (author), Zhang, H. (author), Schlangen, E. (author), Šavija, B. (author)
The aim of this work is to investigate the fracture process of concrete under various boundary conditions. Although numerous concrete fracture tests have been reported, showing the failure behavior of concrete, their evaluation is ambiguous due to the limitations of specimen size and experimental conditions. Therefore, it is necessary to use...
conference paper 2019
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Gan, Y. (author), Zhang, H. (author), Šavija, B. (author), Schlangen, E. (author), van Breugel, K. (author)
Nanoindentation is usually used to investigate local elastic properties and hardness of materials. In this paper, the nanoindenter served as a loading tool to perform micro scale bending tests and measure the global response of micro-scale specimens. For testing, cement paste cantilever beams with a square cross-section of 300 μm × 300 μm were...
conference paper 2019
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