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Nijland, Timo G. (author), Lubelli, B. (author), van Zundert, Kim (author), van Hunen, Michiel (author)The impregnation of the exterior surface of a masonry wall with a water repellent is a common intervention in (historic) building renovation and maintenance. Such treatments, whilst degrading at the surface with time under influence of ultra violet light, remain effective below the surface several decades after their application. During...journal article 2024
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Liu, Baoju (author), Ye, Huiwen (author), Jiang, Junyi (author), Shi, Jinyan (author), Yalçınkaya, Çağlar (author), Šavija, B. (author)Crystalline admixture (CA) is an effective self-healing agent for mortar. However, the effects of crack parameters (i.e. crack width and cracking age) and the service environment on the self-healing behavior of CA-containing mortar are not well understood. Herein, the self-healing behavior of mortar containing a self-developed CA was assessed...journal article 2024
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van Keulen, D.C. (author)The thixotropic properties of contemporary mortars allow the insertion of mortar in small vertical seams by using a mortar pump without the need for traditional formwork. In such a seam, a vertical mortar connection for the transfer of shear forces can be created by simply adding a profile to the mortar-to-concrete interfaces. In this way a...doctoral thesis 2023
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Lubelli, B. (author), des Bouvrie, Ernst (author), Nijland, Timo G. (author), Kamat, Ameya (author)Salt crystallization is a major cause of weathering of mortars, including plasters and renders. In the last decade, the use of mixed-in salt crystallization inhibitors in mortars has been proposed as a solution to improve the durability of this material with respect to salt decay. Laboratory characterization and accelerated weathering tests have...journal article 2023
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Baloch, Hassan (author), Grunewald, S. (author), Matthys, Stijn (author)There is a need to develop innovative repair materials which can overcome the challenges of cement-based repair mortars being relatively prone to shrinkage effects. In practice, free shrinkage of repair mortar is often considered as an indicator for potential cracking and delamination of applied repair mortars due to restrained shrinkage...journal article 2023
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Kamat, Ameya (author), Lubelli, B. (author), Schlangen, E. (author)This paper investigates the leaching behaviour of sodium ferrocyanide, a known crystallisation inhibitor of sodium chloride, which is added to mortars for mitigation of salt decay. Leaching and depletion of the inhibitor is a practical performance related issue that might over time, make the inhibitor less effective against salt decay. In...journal article 2023
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Chang, Z. (author), Liang, M. (author), Xu, Y. (author), Wan, Z. (author), Schlangen, E. (author), Šavija, B. (author)In this study, an experimental setup to characterize the early-age creep of 3D printable mortar was proposed. The testing protocol comprises quasi-static compressive loading-unloading cycles, with 180-s holding periods in between. An analytical model based on a double power law was used to predict creep compliance with hardening time and...journal article 2023
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Kamat, Ameya (author), Lubelli, B. (author), Schlangen, E. (author)Sodium chloride (NaCl) is one of the most commonly occurring weathering agents, responsible for a progressive damage in mortar. Current solutions to mitigate salt damage in mortar, such as the use of mixed-in water repellent additives, have often exhibited low compatibility with the existing building fabric. In the last years, research has...book chapter 2023
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Langejans, G.H.J. (author), Aleo, A. (author), Fajardo, Sebastian (author), Kozowyk, P.R.B. (author)An adhesive is any substance that bonds different materials together. This broad definition includes materials used in everything from hafted stone tools to monumental architecture. In addition, the combination of bonding, plasticity, and insolubility meant that some adhesives were exploited for waterproofing and sealing of materials, as self...journal article 2022
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Kamat, Ameya (author), Lubelli, B. (author), Schlangen, E. (author)Porous building materials are often subjected to damage due to salt crystallization. In recent years, the addition of crystallization inhibitors in lime-based mortar, has shown promising results in improving durability of this material against salt decay. Lime-based mortars have low mechanical properties and slow setting. They are often replaced...journal article 2022
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Poulis, J.A. (author), Mosleh, Yasmine (author), de Bie, L. (author), Richings, Gareth (author), Tennent, Norman H. (author)Arising from questions concerning the long-term stability of the mortar, this research establishes the composition of the epoxy resin mortar used for the construction of the dalle de verre lantern of Liverpool Metropolitan Cathedral. Water ingress had manifested itself early in the life of the lantern as a result of flaws in the mortar. These...conference paper 2022
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Groot, C.J.W.P. (author), Veiga, Rosario (author), Papayianni, Ioanna (author), van Hees, R.P.J. (author), Secco, Michele (author), Alvarez, José I. (author), Faria, Paulina (author), Stefanidou, Maria (author)For conservation interventions of historic masonry generally lime-based mortars such as pure air lime mortars, lime-pozzolan mortars, natural hydraulic lime mortars and ternary mortars (lime-pozzolan-cement) are used. The main reason is that their hygric and mechanical (strength and ductility) performance are easy to adapt to most existing...journal article 2022
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Liu, C. (author), Yang, Lu (author), Li, Z. (author), Nie, Shuai (author), Hu, Chuanlin (author), Wang, Fazhou (author)Due to the satisfactory property and high productivity, heat-cured concretes have been widely used in engineering practice. However, heat curing process also brings some drawbacks that are detrimental to the long-term property of this material. To address this issue, lightweight fine aggregate (LWFA) was employed to provide internal curing ...journal article 2022
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Chen, Zhipei (author), Gao, Liang (author), Koleva, D.A. (author)By different testing methods (electrochemical techniques, potential shift monitoring, and Environmental Scanning Electron Microscope), this research evaluates the stray current corrosion of steel rebar in different layouts. The more significant corrosion state is observed when the steel bar is parallel to stray current flow, compared to the...journal article 2022
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Li, Mingliang (author), Ren, S. (author), Liu, X. (author), Wu, Zhe (author), Zhang, Haopeng (author), Fan, Weiyu (author), Lin, P. (author), Xu, Jian (author)This study aims to comprehensively investigate the rejuvenation efficiency of various self-developed compound rejuvenators on the physical, mechanical, and aging properties of aged bitumen, asphalt mortar, and mixture. The results revealed that the restoration capacity of vacuum distilled-oil rejuvenators on high-and-low temperature performance...journal article 2022
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Setiadji, Bagus Hario (author), Wibowo, M. Agung (author), Jonkers, H.M. (author), Ottele, M. (author), Qomaruddin, Mochammad (author), Sugianto, Felix Hariyanto (author), Lie, Han Ay (author)Asphalt pavement consists of aggregates resulting in a waste material at end of its life. The aggregates can be reused as basic material for asphalt or cementitious binding agents. In both scenarios, the recycled aggregates should provide a good bond with the binder to achieve strength. This study focuses on reusing recycled asphalt...journal article 2022
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Ullmann, Stefan (author), Lowke, Dirk (author)The chloride migration coefficient is the most important material parameter for the service life prediction of reinforced concrete structures in exposure to chloride. For a comprehensive and precise prediction of the service life, however, further effects such as load-induced microcracks must be taken into account. Currently coupled effects like...conference paper 2021
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Krajnović, Ivana (author), Matthys, Stijn (author)Repair mortars are costly materials with high level of Portland cement and various additives which questions their eco-efficiency. In this respect, cement free material solutions such as alkali-activated mortars based on ground granulated blast furnace slag (BFS) are gaining interest for structural repair. The aim of this research is to study...conference paper 2021
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Tsitova, Aliaksandra (author), Bernachy-Barbe, Fabien (author), Bary, Benoît (author), Hild, François (author)The safety of double wall Concrete Containment Buildings (CCBs) in the French nuclear fleet primarily depends on the level of prestress applied to concrete. The delayed strains in concrete induced by creep and shrinkage cause a loss of prestress in the inner wall that may increase the risk of potential leaks in accidental conditions. The creep...conference paper 2021
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Guo, Wenhao (author), Hu, Jie (author), Ma, Yuwei (author), Huang, Haoliang (author), Wei, Jiangxiong (author), Yu, Qijun (author)Impressed current cathodic protection (ICCP) is an effective corrosion protection and prevention technique for reinforced concrete structures served in chloride-contaminated environment. The acidification damage in the external anode mortar caused by the anodic reactions significantly influences the efficiency of ICCP for reinforced concrete....conference paper 2021