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- Schlangen, H.E.J.G. (author), Sangadji, S. (author) patent 2012
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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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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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Sangadji, S. (author), Schlangen, E. (author)Many researchers proposed self healing mechanism using hollow fibres and or microcapsule containing a modifying agent dispersed in the concrete to prolong its service life and make it more durable. A novel self healing concrete concept is proposed in this paper by using porous network concrete components. They are placed at the surface or...conference paper 2012
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- Pacheco Farias, J. (author), Savija, B. (author), Schlangen, H.E.J.G. (author), Polder, R.B. (author) conference paper 2012
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Qiu, J. (author), Van de Ven, M.F.C. (author), Schlangen, H.E.J.G. (author), Wu, S. (author), Molenaar, A.A.A. (author)The traffic volume and the number of heavy vehicles are growing enormously nowadays. There is a need for designing a durable asphalt pavement with innovative technologies. Pavement structures and materials with self healing and self repairing capability are believed to be very useful in such a system. This paper is aiming to understand the self...conference paper 2012
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Savija, B. (author), Schlangen, H.E.J.G. (author)In this paper, a 3D lattice model is proposed as a tool to simulate chloride diffusion in (cracked) cement based materials. The procedure consists of two (computationally independent) steps: simulating fracture with the fracture lattice model, previously developed, and simulating chloride diffusion process using the newly developed transport...conference paper 2012
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- Sangadji, S. (author), Schlangen, E. (author) journal article 2012
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Schlangen, H.E.J.G. (author), Sangadji, S. (author)Infrastructures cover a very broad spectrum of different materials. This paper focuses on civil engineering structures, concrete and asphalt in particular. The public demand for such infrastructures is high level of service and performance, high durability and minimum negative ecological impact. New emerging self healing materials science...journal article 2013
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Montero-Chacón, F. (author), Schlangen, H.E.J.G. (author), Medina, F. (author)The use of fiber-reinforced high-performance concrete (FRHPC) is becoming more extended; therefore it is necessary to develop tools to simulate and better understand its behavior. In this work, a discrete model for the analysis of fracture mechanics in FRHPC is presented. The plain concrete matrix, made of mortar and coarse aggregates, is...conference paper 2013
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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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Agar Ozbek, A.S. (author), Weerheijm, J. (author), Schlangen, H.E.J.G. (author), Van Breugel, K. (author)Porous concrete is used in many applications that require permeability, noise absorption or thermal insulation. However, its response under dynamic loading is generally not considered. Porous concrete has a characteristic of forming multiple cracks and subsequently fracturing into small fragments when exposed to impact loading. Therefore, with...conference paper 2013
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Xuan, D. (author), Schlangen, H.E.J.G. (author), Molenaar, A.A.A. (author), Houben, L.J.M. (author)Fracture properties of cement treated demolition waste were investigated using a lattice model. In practice the investigated material is applied as a cement treated road base/subbase course. The granular aggregates used in this material were crushed recycled concrete and masonry. This results in six different types of phases in the mixture:...conference paper 2013
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Qian, Z. (author), Schlangen, H.E.J.G. (author)The fracture processes in concrete can be simulated by lattice fracture model [1]. A lattice network is usually constructed on top of the material structure of concrete, and then the mechanical properties of lattice elements are assigned, corresponding with the phases they represent. The material structure of concrete can be obtained...conference paper 2013
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- Savija, B. (author), Pacheco Farias, J. (author), Schlangen, H.E.J.G. (author) conference paper 2013
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Su, J.F. (author), Qiu, J. (author), Schlangen, H.E.J.G. (author)Preservation and renovation bitumen of pavement is a big problem for the whole world. Traditionally, application rejuvenators is the only one method that can restore the original properties of the pavements. However, some puzzles still restrict its successful usage. Microencapsulation is a promising method to apply rejuvenator in bitumen. These...conference paper 2013
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Su, J.F. (author), Qiu, J. (author), Schlangen, H.E.J.G. (author)Preservation and renovation bitumen of pavement is a big problem for the whole world. Traditionally, application rejuvenators is the only one method that can restore the original properties of the pavements. However, some puzzles still restrict its successful usage. Microencapsulation is a promising method to apply rejuvenator in bitumen. These...conference paper 2013
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Wiktor, V. (author), Sangadji, S. (author), Jonkers, H.M. (author), Schlangen, H.E.J.G. (author)Bacterially induced calcium carbonate precipitation has received considerable attention for its potential application in enforcing or repairing construction material. The mechanism of bacterially mediated calcite precipitation in those studies is primarily based on the enzymatic hydrolysis of urea. Besides calcite precipitation, this reaction...conference paper 2013
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Xiong, W. (author), Zhu, G. (author), Tang, J. (author), Dong, B. (author), Han, N. (author), Xing, F. (author), Schlangen, H.E.J.G. (author)Poly (urea-formaldehyde) (PUF) shelled dicyclopentadiene (DCPD) microcapsules were prepared by in-situ polymerization technology for self-healing concrete applications. It’s found, during the process, sodium dodecyl benzene sulfonate (SDBS) behaves better in emulsification of DCPD than other surfactant of sodium lauryl sulfate (SLS) and styrene...conference paper 2013
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Qiu, J. (author), Schlangen, H.E.J.G. (author), Van de Ven, M.F.C. (author), Shirazi, M. (author)Reclaimed Asphalt (RA) is one of the largest fractions of raw materials used in road construction today. Probably over 90% of the total RA in the Netherlands is being reused in new asphalt constructions. RA contains aggregates coated with very hard bitumen (penetration grade of 10-20). During service, the bituminous binder loses its flexibility...conference paper 2013