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- Qian, Z. (author), Schlangen, E. (author), Ye, G. (author), Van Breugel, K. (author) conference paper 2011
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Lukovic, M. (author), Savija, B. (author), Schlangen, E. (author), Ye, G. (author), van Breugel, K. (author)Differential shrinkage between repair material and concrete substrate is considered to be the main cause of premature failure of repair systems (Martinola, Sadouki et al. 2001, Beushausen and Alexander 2007). Magnitude of induced stresses depends on many factors, for example the amount of restraint, moisture gradients caused by different curing...conference paper 2014
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Qian, Z. (author), Ye, G. (author), Schlangen, E. (author), Van Breugel, K. (author)Concrete is a composite construction material, which is composed primarily of coarse aggregates, sands and cement paste. The fracture processes in concrete are complicated, because of the multiscale and multiphase nature of the material. In the past decades, comprehensive effort has been put to study the cracks evolution in concrete, both...conference paper 2012
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Lukovic, M. (author), Schlangen, H.E.J.G. (author), Ye, G. (author), Savija, B. (author)Surface roughness of the existing concrete substrate was considered to have the greatest impact on the bond strength in repair systems. However, the influence of this parameter has been subject for debates in recent years. The effect of concrete surface roughness is not quite clear, nor there exist a clear relation between the surface roughness...conference paper 2013
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Qian, Z. (author), Schlangen, E. (author), Ye, G. (author), Van Breugel, K. (author)Cracking in cement-based materials is usually not easy to predict, because of the complexity of their microstructures. Concrete is a composite material of mortar and coarse aggregates, and mortar consists of cement paste and sands. The fracture processes in these materials are related, and this paper aims to reveal the relationship by developing...conference paper 2012
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Romero Rodriguez, Claudia (author), Ye, Rui (author), Varveri, Aikaterini (author), Rossi, Emanuele (author), Anglani, Giovanni (author), Antonaci, Paola (author), Schlangen, Erik (author), Šavija, Branko (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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- Qian, Z. (author), Ye, G. (author), Schlangen, E. (author), Van Breugel, K. (author) conference paper 2012
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Lukovic, M. (author), Schlangen, E. (author), Savija, B. (author), Ye, G. (author), Copuroglu, O. (author)Simulation of mechanical behaviour of heterogeneous materials is only possible if the local properties of the components are known. In recent years nano-indentation is being applied on different levels to obtain local mechanical properties. The aim of this paper is to explore various ways to obtain these properties by combining nano-indentation...conference paper 2015
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Qian, Z. (author), Ye, G. (author), Schlangen, H.E.J.G. (author), Van Breugel, K. (author)Numerical modeling of fracture processes of brittle materials, such as cement paste, mortar, concrete and rocks, started in the late 1960s when the discrete and smeared cracking models were introduced. In the 1990s, Schlangen and van Mier proposed another numerical model to compensate the drawbacks of the discrete and smeared cracking models,...conference paper 2010
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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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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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Mazaheripour, Hadi (author), Faria, Rui (author), Azenha, Miguel (author), Ye, G. (author), Schlangen, E. (author)Exposing reinforced concrete (RC) structures to aggressive environmental conditions is one of the main reasons that may limit their service life. Diffusion of chloride ions through concrete cover is one of the most damaging environmental actions, since it may cause corrosion of steel reinforcement. Therefore, modelling this phenomenon allows...conference paper 2018
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Sherzer, G. (author), Gal, B. (author), Schlangen, E. (author), Ye, G. (author)The mechanical response of concrete is complex and as other composite materials, multiscale modelling has the potential for modeling its macroscopic behavior. This paper presents an upscaling methodology for the model-ling of the concrete mechanical properties. The suggested formulation starts from a known chemical and mechanical set of...conference paper 2018
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- Lukovic, M. (author), Savija, B. (author), Dong, H. (author), Schlangen, E. (author), Ye, G. (author) journal article 2014
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Gao, Peng (author), Ye, G. (author), Huang, Haoliang (author), Qian, Zhiwei (author), Schlangen, E. (author), Wei, Jiangxiong (author), Yu, Qijun (author)A structure-based modelling framework was established to simulate the three-dimensional autogenous shrinkage of cement paste. A cement hydration model, HYMOSTRUC3D-E, was used to obtain the microstructures and ionic concentrations of the cement paste. A lattice fracture model based on the effective stress and effective modulus was used to...journal article 2022
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Sherzer, G. Lifshitz (author), Ye, G. (author), Schlangen, E. (author), Kovler, K. (author)It has been observed that a trench wall embedded in the soil of the Dead Sea has lost strength and is deteriorating due to brine attack. This phenomenon demonstrates that concrete wall structural stability and durability can be seriously endangered. Yet conventional analysis using macroscopic models is considered an oversimplification, as it...journal article 2022
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Qiu, Xiujiao (author), Chang, Z. (author), Chen, J. (author), Schlangen, E. (author), Ye, G. (author), Schutter, Geert De (author)In our former paper, based on a published 3D reactive transport model at microscale with the capability of simulating the chemical reactions involved in ASR, the location of expansive ASR gel related to the reactivity of aggregate, temperature, aggregate porosity and silica content in aggregate, is clarified. Based on the simulation results,...journal article 2023
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Sherzer, G. (author), Gao, P. (author), Schlangen, E. (author), Ye, G. (author), Gal, E. (author)Modeling the complex behavior of concrete for a specific mixture is a challenging task, as it requires bridging the cement scale and the concrete scale. We describe a multiscale analysis procedure for the modeling of concrete structures, in which material properties at the macro scale are evaluated based on lower scales. Concrete may be viewed...journal article 2017
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Qian, Zhiwei (author), Schlangen, E. (author), Ye, G. (author), van Breugel, K. (author)Multiscale modeling for cement-based materials, such as concrete, is a relatively young subject, but there are already a number of different approaches to study different aspects of these classical materials. In this paper, the parameter-passing multiscale modeling scheme is established and applied to address the multiscale modeling problem...journal article 2017
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Lukovic, M. (author), Ye, G. (author), Schlangen, E. (author), van Breugel, K. (author)In concrete repair systems, material properties in the repair material and interface are greatly influenced by the initial moisture content of the concrete (or mortar) substrate. In order to quantify moisture profiles inside the repair system, X-ray absorption was used. Preliminary studies are performed first to determine the absorption rate of...journal article 2017
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