TY - JOUR A1 - Vanoutrive, Hanne A1 - van den Heede, Philip A1 - Alderete, Natalia A1 - Andrade, Carmen A1 - Bansal, Tushar A1 - Camões, Aires A1 - Cizer, Özlem A1 - de Belie, Nele A1 - Ducman, Vilma A1 - Etxeberria, Miren A1 - Frederickx, Lander A1 - Grengg, Cyrill A1 - Ignjatović, Ivan A1 - Ling, Tung-Chai A1 - Liu, Zhiyuan A1 - Garcia-Lodeiro, Inés A1 - Lothenbach, Barbara A1 - Medina Martinez, César A1 - Sanchez-Montero, Javier A1 - Olonade, Kolawole A1 - Palomo, Angel A1 - Phung, Quoc Tri A1 - Rebolledo, Nuria A1 - Sakoparnig, Marlene A1 - Sideris, Kosmas A1 - Thiel, Charlotte A1 - Visalakshi, Talakokula A1 - Vollpracht, Anya A1 - von Greve-Dierfeld, Stefanie A1 - Wei, Jinxin A1 - Wu, Bei A1 - Zając, Maciej A1 - Zhao, Zengfeng A1 - Gruyaert, Elke T1 - Report of RILEM TC 281-CCC: outcomes of a round robin on the resistance to accelerated carbonation of Portland, Portland-fly ash and blast-furnace blended cements JF - Materials and Structures N2 - Many (inter)national standards exist to evaluate the resistance of mortar and concrete to carbonation. When a carbonation coefficient is used for performance comparison of mixtures or service life prediction, the applied boundary conditions during curing, preconditioning and carbonation play a crucial role, specifically when using latent hydraulic or pozzolanic supplementary cementitious materials (SCMs). An extensive interlaboratory test (ILT) with twenty two participating laboratories was set up in the framework of RILEM TC 281-CCC 'Carbonation of Concrete with SCMs'. The carbonation depths and coefficients determined by following several (inter)national standards for three cement types (CEM I, CEM II/B-V, CEM III/B) both on mortar and concrete scale were statistically compared. The outcomes of this study showed that the carbonation rate based on the carbonation depths after 91 days exposure, compared to 56 days or less exposure duration, best approximates the slope of the linear regression and those 91 days carbonation depths can therefore be considered as a good estimate of the potential resistance to carbonation. All standards evaluated in this study ranked the three cement types in the same order of carbonation resistance. Unfortunately, large variations within and between laboratories complicate to draw clear conclusions regarding the effect of sample pre-conditioning and carbonation exposure conditions on the carbonation performance of the specimens tested. Nevertheless, it was identified that fresh and hardened state properties alone cannot be used to infer carbonation resistance of the mortars or concretes tested. It was also found that sealed curing results in larger carbonation depths compared to water curing. However, when water curing was reduced from 28 to 3 or 7 days, higher carbonation depths compared to sealed curing were observed. This increase is more pronounced for CEM I compared to CEM III mixes. The variation between laboratories is larger than the potential effect of raising the CO2 concentration from 1 to 4%. Finally, concrete, for which the aggregate-to-cement factor was increased by 1.79 in comparison with mortar, had a carbonation coefficient 1.18 times the one of mortar. Supplementary Information The online version contains supplementary material available at 10.1617/s11527-022-01927-7. Y1 - 2022 U6 - https://doi.org/10.1617/s11527-022-01927-7 VL - 55 IS - 3 SP - 1 EP - 29 PB - Springer ER - TY - JOUR A1 - Boyce, Brad L. A1 - Kramer, Sharlotte L. B. A1 - Bosiljevac, T. R. A1 - Corona, Edmundo A1 - Moore, J. A. A1 - Elkhodary, Khalil A1 - Simha, C. Hari Manoj A1 - Williams, Bruce W. A1 - Cerrone, Albert R. A1 - Nonn, Aida A1 - Hochhalter, Jacob D. A1 - Bomarito, Geoffrey F. A1 - Warner, James E. A1 - Carter, Bruce J. A1 - Warner, Derek H. A1 - Ingraffea, Anthony R. A1 - Zhang, T. A1 - Fang, X. A1 - Lua, Jim A1 - Chiaruttini, Vincent A1 - Maziere, Matthieu A1 - Feld-Payet, Sylvia A1 - Yastrebov, Vladislav A. A1 - Besson, Jacques A1 - Chaboche, Jean Louis A1 - Lian, J. A1 - Di, Y. A1 - Wu, Bei A1 - Novokshanov, Denis A1 - Vajragupta, Napat A1 - Kucharczyk, Pawel A1 - Brinnel, Viktoria A1 - Doebereiner, Benedikt A1 - Muenstermann, Sebastian A1 - Neilsen, Michael K. A1 - Dion, Kristin A1 - Karlson, Kyle N. A1 - Foulk, James Wesley A1 - Brown, Arthur A. A1 - Veilleux, Michael G. A1 - Bignell, John L. A1 - Sanborn, Scott E. A1 - Jones, Chris A. A1 - Mattie, Patrick D. A1 - Pack, Keunhwan A1 - Wierzbicki, Tomasz A1 - Chi, Sheng-Wei A1 - Lin, S.-P. A1 - Mahdavi, Ashkan A1 - Predan, Jozef A1 - Zadravec, Janko A1 - Gross, Andrew J. A1 - Ravi-Chandar, KRISHNASWAMY A1 - Xue, Liang T1 - The second Sandia Fracture Challenge: predictions of ductile failure under quasi-static and moderate-rate dynamic loading JF - International journal of fracture N2 - Ductile failure of structural metals is relevant to a wide range of engineering scenarios. Computational methods are employed to anticipate the critical conditions of failure, yet they sometimes provide inaccurate and misleading predictions. Challenge scenarios, such as the one presented in the current work, provide an opportunity to assess the blind, quantitative predictive ability of simulation methods against a previously unseen failure problem. Rather than evaluate the predictions of a single simulation approach, the Sandia Fracture Challenge relies on numerous volunteer teams with expertise in computational mechanics to apply a broad range of computational methods, numerical algorithms, and constitutive models to the challenge. This exercise is intended to evaluate the state of health of technologies available for failure prediction. In the first Sandia Fracture Challenge, a wide range of issues were raised in ductile failure modeling, including a lack of consistency in failure models, the importance of shear calibration data, and difficulties in quantifying the uncertainty of prediction [see Boyce et al. (Int J Fract 186:5-68, 2014) for details of these observations]. This second Sandia Fracture Challenge investigated the ductile rupture of a Ti-6Al-4V sheet under both quasi-static and modest-rate dynamic loading (failure in 0.1 s). Like the previous challenge, the sheet had an unusual arrangement of notches and holes that added geometric complexity and fostered a competition between tensile- and shear-dominated failure modes. The teams were asked to predict the fracture path and quantitative far-field failure metrics such as the peak force and displacement to cause crack initiation. Fourteen teams contributed blind predictions, and the experimental outcomes were quantified in three independent test labs. Additional shortcomings were revealed in this second challenge such as inconsistency in the application of appropriate boundary conditions, need for a thermomechanical treatment of the heat generation in the dynamic loading condition, and further difficulties in model calibration based on limited real-world engineering data. As with the prior challenge, this work not only documents the 'state-of-the-art' in computational failure prediction of ductile tearing scenarios, but also provides a detailed dataset for non-blind assessment of alternative methods. KW - Alloy KW - BEHAVIOR KW - CRACK-PROPAGATION KW - DAMAGE KW - Deformation KW - Fracture KW - HIGH-STRAIN-RATE KW - KERNEL PARTICLE METHODS KW - Metal KW - MODEL KW - Modeling KW - Plasticity KW - POLYCRYSTALLINE AL 6061-T6 KW - PREDICTION KW - ROOM-TEMPERATURE KW - Rupture KW - simulation KW - STRENGTH STEEL SHEETS KW - Tearing Y1 - 2016 U6 - https://doi.org/10.1007/s10704-016-0089-7 IS - 198, 1-2 SP - 5 EP - 100 PB - Springer ER - TY - JOUR A1 - von Greve-Dierfeld, Stefanie A1 - Lothenbach, Barbara A1 - Vollpracht, Anya A1 - Wu, Bei A1 - Huet, Bruno A1 - Andrade, Carmen A1 - Medina, César A1 - Thiel, Charlotte A1 - Gruyaert, Elke A1 - Vanoutrive, Hanne A1 - Del Saéz Bosque, Isabel F. A1 - Ignjatovic, Ivan A1 - Elsen, Jan A1 - Provis, John L. A1 - Scrivener, Karen A1 - Thienel, Karl-Christian A1 - Sideris, Kosmas A1 - Zajac, Maciej A1 - Alderete, Natalia A1 - Cizer, Özlem A1 - van den Heede, Philip A1 - Hooton, Robert Douglas A1 - Kamali-Bernard, Siham A1 - Bernal, Susan A. A1 - Zhao, Zengfeng A1 - Shi, Zhenguo A1 - de Belie, Nele T1 - Understanding the carbonation of concrete with supplementary cementitious materials BT - a critical review by RILEM TC 281-CCC JF - Materials and Structures N2 - 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 potential reinforcement corrosion due to carbonation. carbonation of concrete with SCMs differs from carbonation of concrete solely based on Portland cement (PC). This is a consequence of the differences in the hydrate phase assemblage and pore solution chemistry, as well as the pore structure and transport properties, when varying the binder composition, age and curing conditions of the concretes. The carbonation mechanism and kinetics also depend on the saturation degree of the concrete and CO2 partial pressure which in turn depends on exposure conditions (e.g. relative humidity, volume, and duration of water in contact with the concrete surface and temperature conditions). This in turn influence the microstructural changes identified upon carbonation. This literature review, prepared by members of RILEM technical committee 281-CCC carbonation of concrete with supplementary cementitious materials, working groups 1 and 2, elucidates the effect of numerous SCM characteristics, exposure environments and curing conditions on the carbonation mechanism, kinetics and structural alterations in cementitious systems containing SCMs. KW - Transport properties KW - Environmental impact KW - Aggregate KW - Supplementary cementitious materials KW - Carbonations Y1 - 2020 U6 - https://doi.org/10.1617/s11527-020-01558-w VL - 53 SP - 1 EP - 34 PB - Springer Nature ER - TY - JOUR A1 - Matusch, Andreas A1 - Depboylu, Candan A1 - Palm, Christoph A1 - Wu, Bei A1 - Höglinger, Günter U. A1 - Schäfer, Martin K.-H. A1 - Becker, Johanna Sabine T1 - Cerebral bio-imaging of Cu, Fe, Zn and Mn in the MPTP mouse model of Parkinsons disease using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) JF - Journal of the American Society for Mass Spectrometry N2 - Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) has been established as a powerful technique for the determination of metal and nonmetal distributions within biological systems with high sensitivity. An imaging LA-ICP-MS technique for Fe, Cu, Zn, and Mn was developed to produce large series of quantitative element maps in native brain sections of mice subchronically intoxicated with 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridin (MPTP) as a model of Parkinson’s disease. Images were calibrated using matrix-matched laboratory standards. A software solution allowing a precise delineation of anatomical structures was implemented. Coronal brain sections were analyzed crossing the striatum and the substantia nigra, respectively. Animals sacrificed 2 h, 7 d, or 28 d after the last MPTP injection and controls were investigated. We observed significant decreases of Cu concentrations in the periventricular zone and the fascia dentata at 2 h and 7d and a recovery or overcompensation at 28 d, most pronounced in the rostral periventricular zone (+40%). In the cortex Cu decreased slightly to −10%. Fe increased in the interpeduncular nucleus (+40%) but not in the substantia nigra. This pattern is in line with a differential regulation of periventricular and parenchymal Cu, and with the histochemical localization of Fe, and congruent to regions of preferential MPTP binding described in the rodent brain. The LA-ICP-MS technique yielded valid and statistically robust results in the present study on 39 slices from 19 animals. Our findings underline the value of routine micro-local analytical techniques in the life sciences and affirm a role of Cu availability in Parkinson’s disease. KW - Inductively Couple Plasma Mass Spectrometry KW - Substantia Nigra KW - MPTP KW - Laser Ablation Inductively Couple Plasma Mass Spectrometry KW - MPTP Treatment KW - ICP-Massenspektrometrie KW - Metalle KW - Gehirnkarte KW - MPTP Y1 - 2010 U6 - https://doi.org/10.1016/j.jasms.2009.09.022 VL - 21 IS - 1 SP - 161 EP - 171 ER - TY - JOUR A1 - Becker, Johanna Sabine A1 - Zoriy, Miroslav A1 - Matusch, Andreas A1 - Wu, Bei A1 - Salber, Dagmar A1 - Palm, Christoph A1 - Becker, Julia Susanne T1 - Bioimaging of Metals by Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS) JF - Mass Spectrometry Reviews N2 - The distribution analysis of (essential, beneficial, or toxic) metals (e.g., Cu, Fe, Zn, Pb, and others), metalloids, and non‐metals in biological tissues is of key interest in life science. Over the past few years, the development and application of several imaging mass spectrometric techniques has been rapidly growing in biology and medicine. Especially, in brain research metalloproteins are in the focus of targeted therapy approaches of neurodegenerative diseases such as Alzheimer's and Parkinson's disease, or stroke, or tumor growth. Laser ablation inductively coupled plasma mass spectrometry (LA‐ICP‐MS) using double‐focusing sector field (LA‐ICP‐SFMS) or quadrupole‐based mass spectrometers (LA‐ICP‐QMS) has been successfully applied as a powerful imaging (mapping) technique to produce quantitative images of detailed regionally specific element distributions in thin tissue sections of human or rodent brain. Imaging LA‐ICP‐QMS was also applied to investigate metal distributions in plant and animal sections to study, for example, the uptake and transport of nutrient and toxic elements or environmental contamination. The combination of imaging LA‐ICP‐MS of metals with proteomic studies using biomolecular mass spectrometry identifies metal‐containing proteins and also phosphoproteins. Metal‐containing proteins were imaged in a two‐dimensional gel after electrophoretic separation of proteins (SDS or Blue Native PAGE). Recent progress in LA‐ICP‐MS imaging as a stand‐alone technique and in combination with MALDI/ESI‐MS for selected life science applications is summarized. KW - Bildgebendes Verfahren KW - ICP-Massenspektrometrie KW - Metalle KW - Metallproteide KW - Elektrophorese KW - Gehirnkarte KW - Bioimaging of metals KW - Laser ablation inductively coupled plasma mass spectrometry KW - metal distribution KW - metallomics KW - neurodegenerative diseases Y1 - 2010 U6 - https://doi.org/10.1002/mas.20239 VL - 29 SP - 156 EP - 175 ER - TY - JOUR A1 - Becker, Johanna Sabine A1 - Matusch, Andreas A1 - Becker, Julia Susanne A1 - Wu, Bei A1 - Palm, Christoph A1 - Becker, Albert Johann A1 - Salber, Dagmar T1 - Mass spectrometric imaging (MSI) of metals using advanced BrainMet techniques for biomedical research JF - International Journal of Mass Spectrometry N2 - Mass spectrometric imaging (MSI) is a young innovative analytical technique and combines different fields of advanced mass spectrometry and biomedical research with the aim to provide maps of elements and molecules, complexes or fragments. Especially essential metals such as zinc, copper, iron and manganese play a functional role in signaling, metabolism and homeostasis of the cell. Due to the high degree of spatial organization of metals in biological systems their distribution analysis is of key interest in life sciences. We have developed analytical techniques termed BrainMet using laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) imaging to measure the distribution of trace metals in biological tissues for biomedical research and feasibility studies—including bioaccumulation and bioavailability studies, ecological risk assessment and toxicity studies in humans and other organisms. The analytical BrainMet techniques provide quantitative images of metal distributions in brain tissue slices which can be combined with other imaging modalities such as photomicrography of native or processed tissue (histochemistry, immunostaining) and autoradiography or with in vivo techniques such as positron emission tomography or magnetic resonance tomography. Prospective and instrumental developments will be discussed concerning the development of the metalloprotein microscopy using a laser microdissection (LMD) apparatus for specific sample introduction into an inductively coupled plasma mass spectrometer (LMD-ICP-MS) or an application of the near field effect in LA-ICP-MS (NF-LA-ICP-MS). These nano-scale mass spectrometric techniques provide improved spatial resolution down to the single cell level. KW - Bioimaging KW - Brain tissue KW - Laser ablation inductively coupled plasma mass spectrometry KW - Laser microdissection inductively coupled plasma mass spectrometry KW - Metals KW - Metallomics KW - Nano-LA-ICP-MS KW - Tumour KW - Massenspektrometrie KW - Bildgebendes Verfahren KW - Metalle KW - Metallproteide KW - Gehirn Y1 - 2011 U6 - https://doi.org/10.1016/j.ijms.2011.01.015 VL - 307 IS - 1-3 SP - 3 EP - 15 PB - eLSEVIER CY - Elsevier ER -