Literatura académica sobre el tema "Cementitious hydrates"
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Artículos de revistas sobre el tema "Cementitious hydrates"
Awan, Muhammad Maqbool Sadiq, Parviz Soroushian, Arshad Ali y Muhammad Yousaf Saqid Awan. "High-Performance Cementitious Matrix using Carbon Nanofibers". Indonesian Journal of Science and Technology 2, n.º 1 (1 de abril de 2017): 57. http://dx.doi.org/10.17509/ijost.v2i1.5989.
Texto completoAl-Fakih, Amin, Ali Odeh, Mohammed Abdul Azeez Mahamood, Madyan A. Al-Shugaa, Mohammed A. Al-Osta y Shamsad Ahmad. "Review of the Properties of Sustainable Cementitious Systems Incorporating Ceramic Waste". Buildings 13, n.º 8 (20 de agosto de 2023): 2105. http://dx.doi.org/10.3390/buildings13082105.
Texto completoZhu, Zheyu, Zhongping Wang, Yue Zhou, Yuting Chen y Kai Wu. "Identification of Chemical Bonds and Microstructure of Hydrated Tricalcium Silicate (C3S) by a Coupled Micro-Raman/BSE-EDS Evaluation". Materials 14, n.º 18 (8 de septiembre de 2021): 5144. http://dx.doi.org/10.3390/ma14185144.
Texto completoTakahashi, Keisuke y Mari Kobayashi. "Utilization of Cement and Concrete for Deep Sea Infrastructure". ce/papers 6, n.º 6 (diciembre de 2023): 1291–94. http://dx.doi.org/10.1002/cepa.2996.
Texto completoOproiu, Carmen-Lidia, Georgeta Voicu, Alina Bădănoiu y Adrian-Ionuţ Nicoară. "The Solidification/Stabilization of Wastewater (From a Landfill Leachate) in Specially Designed Binders Based on Coal Ash". Materials 14, n.º 19 (27 de septiembre de 2021): 5610. http://dx.doi.org/10.3390/ma14195610.
Texto completoLee, Heeyoung, Jongkyeong Seong y Wonseok Chung. "Correlation Analysis of Heat Curing and Compressive Strength of Carbon Nanotube–Cement Mortar Composites at Sub-Zero Temperatures". Crystals 11, n.º 10 (28 de septiembre de 2021): 1182. http://dx.doi.org/10.3390/cryst11101182.
Texto completoRenaudin, Guillaume, Adel Mesbah, Belay Dilnesa, Michel Francois y Barbara Lothenbach. "Crystal Chemistry of Iron Containing Cementitious AFm Layered Hydrates". Current Inorganic Chemistry 5, n.º 3 (14 de julio de 2015): 184–93. http://dx.doi.org/10.2174/1877944105666150420235831.
Texto completoXu, Yue, Jian Xi Li y Li Li Kan. "Investigation on a New Hydraulic Cementitious Binder Made from Phosphogypsum". Advanced Materials Research 864-867 (diciembre de 2013): 1923–28. http://dx.doi.org/10.4028/www.scientific.net/amr.864-867.1923.
Texto completoKaminskas, Rimvydas y Brigita Savickaite. "Expanded Clay Production Waste as Supplementary Cementitious Material". Sustainability 15, n.º 15 (1 de agosto de 2023): 11850. http://dx.doi.org/10.3390/su151511850.
Texto completoBernard, Ellina. "Research progress on magnesium silicate hydrate phases and future opportunities". RILEM Technical Letters 7 (1 de septiembre de 2022): 47–57. http://dx.doi.org/10.21809/rilemtechlett.2022.162.
Texto completoTesis sobre el tema "Cementitious hydrates"
Hérin, Thibaut. "Mécanismes de la radiolyse dans les hydrates cimentaires et conséquence sur la formation de dihydrogène dans les matériaux irradiés". Electronic Thesis or Diss., université Paris-Saclay, 2024. http://www.theses.fr/2024UPASF010.
Texto completoThe cementitious matrices considered for the conditioning of long-lived intermediate-level radioactive waste are subject to ionising radiation, which leads to the production of radiolytic dihydrogen and requires this risk to be taken into account. Until now, H₂ risk assessment has been based on the assumption that radiolysis of pore water is predominant and radiolysis of solid phases negligible. However, the hydrates making up the cementitious paste contain a lot of chemically bound water and the radiolytic decomposition of the latter could lead to an additional H₂ source term that needs to be assessed.In order simplify the system, the cement paste was studied using four model minerals, selected for their representativeness or demonstrative quality: portlandite, 11 Å tobermorite, 9 Å tobermorite and meta-jennite. This selection maintains close proximity to the cementitious material and enables the behaviour of the water of crystallisation and/or the water of constitution (OH bonds), which represent the two types of chemically bound water, to be studied separately under irradiation. In order to avoid a parasitic contribution from adsorbed water, the undesirable presence of which could lead to an overestimation of the contribution of the solid phases, particular care was taken with the desorption of the samples in this study.Exposure of minerals to sources of ionising radiation (accelerated electrons and γ-radiation) generates H₂ production that varies according to the mineral. The production of H₂ in portlandite is highly dependent on the specific surface area of irradiated samples. Electron paramagnetic resonance experiments have identified two H₂ production pathways in this mineral.A first mechanism, localised at the surface, induces significant H₂ production in samples with a high specific surface area. A second mechanism leads to the creation of H₂ in the volume of the material. This H₂ is then able to migrate from the volume to the surface via a subdiffusion transport mechanism. This effect results in a progressive release of H₂ in the irradiated samples.Concerning crystallised C-S-H, tobermorite 9 Å, which is the mineral containing the least chemically bound water, is paradoxically the one producing the most H₂. However, this production seems to come exclusively from the mineral's surface sites. The irradiations carried out on meta-jennite and 11 Å tobermorite show, on the contrary, that radiolysis of the water of crystallisation in these minerals does not contribute to H₂ production. While dissociation of water of crystallisation molecules was indeed observed in 11 Å tobermorite, it would appear that the radicals formed lead to the formation of SiO-H bonds, which were initially absent, rather than to the formation of H₂. Irradiation of meta-jennite samples with different amounts of water of crystallisation showed that H₂ production is independent of this parameter. This again implies that water of crystallisation does not produce H₂ and that only water of constitution is responsible for the formation of H₂ observed in this mineral.Overall, H₂ production in minerals is strongly governed by surface phenomena. It seems likely that in the case of a cementitious medium, made up of non-powdery materials, the prevalence of these mechanisms decreases in favour of the radiolysis of pore water, which is usually taken into account. This scenario leads to an existing, but limited, contribution of the solid phases to the production of radiolytic H₂
Ectors, Dominique [Verfasser] y Jürgen [Gutachter] Neubauer. "Advances in the analysis of cementitious reactions and hydrate phases / Dominique Ectors. Gutachter: Jürgen Neubauer". Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2016. http://d-nb.info/1102529214/34.
Texto completoWilson, William. "Chemo-mechanical characterization of microstructure phases in cementitious systems by a novel NI-QEDS technique". Thèse, Université de Sherbrooke, 2017. http://hdl.handle.net/11143/11620.
Texto completoAbstract : Facing the limitedness of the earth’s resources and pollution absorption capacity, the development of eco-concrete for a sustainable industrialized future is one of the major challenges of modern concrete science. Due to its complex heterogeneous nature, the macro-scale properties of concrete strongly depend on the microstructure constituents (e.g., calcium-silicate-hydrates [C–S–H], Portlandite, anhydrous inclusions, porosity, aggregates, etc.). Moreover, the need for rapid and optimal exploitation of emerging binding materials in industrial applications urges today a better understanding of their chemo-mechanical features at the micrometer scale. This thesis aims at developing a state-of-the-art method coupling NanoIndentation and Quantitative Energy-Dispersive Spectroscopy (NI-QEDS), and providing an original chemo-mechanical characterization of the microstructure phases in highly heterogeneous matrices of real blended-cement pastes. The combination of statistical and deterministic NI-QEDS analysis approaches opened new research horizons in the understanding of Portland-cement systems incorporating conventional and alternative supplementary cementitious materials (SCMs). More specifically, the investigations of C–(A)–S–H (C–S–H including aluminum or not) in different blended-cement systems showed variable compositions for this hydrate (i.e., Ca, Si, Al, S and Mg contents), but the mechanical properties were not significantly affected by the incorporation of SCMs in typical dosages. The presented results also showed the important role of the other phases embedded in the C–(A)–S–H matrix, i.e., hard anhydrous inclusions (e.g., clinker and SCMs) and other hydrates such as Portlandite and Al-rich hydrates (e.g., carboaluminates) with mechanical properties higher than those of the C–(A)–S–H. The thesis is based on five articles focusing on: (1) the NI-EDS investigation of high-volume natural pozzolan systems; (2) the development of the NI-QEDS method; the statistical NI-QEDS analyses of (3) fly ash and slag blended-cement systems and of (4) a limestone-calcined-clay system; and (5) the deterministic NI-QEDS exploration of alternative and conventional systems incorporating glass powder, metakaolin, slag or fly ash. Finally, the developed tool not only advanced the latest micromechanical methods and models, but also provided original chemo-mechanical insights on the microstructure phases and their arrangement. Unveiling the chemo-mechanical signature of these highly-complex blended cement pastes further provided unique knowledge for engineering concretes for tomorrow.
Maddalena, Riccardo. "Synthesis of Calcium Silicate Hydrate (C-S-H) and novel cementitious materials : characterisation, engineering applications and environmental aspects". Thesis, University of Strathclyde, 2018. http://digitool.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=29561.
Texto completoJagannathan, Deepak. "Calcium-Silicate-Hydrate in cementitious systems : chemomechanical correlations, extreme temperature behavior, and kinetics and morphology of in-situ formation". Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/92651.
Texto completoCataloged from PDF version of thesis.
Includes bibliographical references (pages 96-102).
Concrete, the second most used material on the planet, is a multi-scale heterogeneous material. A fundamental component known as Calcium-Silicate-Hydrate which forms from the reaction between cement and water is the binding phase in concrete. Curiously, this is the least understood component of concrete because of its porous amorphous structure. Further, beyond mere scientific curiosity, cementS̆s industry large carbon footprint due to its volume of usage sets up a practical context to seek improvements in concrete performance and equip concrete with additional functionalities. It is our contention that we can better understand the least known and crucial component of concrete, Calcium-Silicate-Hydrate, to inform the design of next generation of high performance concrete. With this broad theme, this thesis presents three different aspects of properties of Calcium Silicate Hydrate: chemomechanical correlations, behavior under extreme temperature and pressures, and kinetics and nanostructure of in-situ formation. Calcium Silicate Hydrate (C-S-H) formed in-situ in concrete is believed to have a layered structure with silicate chains similar to crystal structures of Tobermorite and Jennite. Its chemical composition, characterized by Ca/Si ratio, must therefore influence its silicate chain structure and thus its mechanical properties. We explore the correlation between CS- H composition and its mechanical properties. By varying chemical composition of cement clinkers and supplementary cementitious materials, water/cement ratios, and hydration temperatures, we prepare cement pastes with different C-S-H of different C/S ratios. We use nanoindentation and X-ray spectroscopy to respectively measure the mechanical properties and composition of C-S-H. We then study the mechanical performance of C-S-H at elevated temperatures. This is relevant in the design of infrastructure that can sustain extreme events such as blasts and high velocity impacts. As a starting point for concrete that would enable such infrastructure, we use ultra high performance concrete (UHPC). We use nanoindentation and X-ray spectroscopy to respectively measure mechanical properties and composition of individual components of UHPC. We compare the composition and properties of C-S-H found in UHPC to that found in ordinary cement pastes (OPC). Our grid nanoindentation experiments also reveal an artifacts created by the incorporation of steel fiber reinforcements in UHPC. We find that steel fiber reinforcements disrupt the perfect packing of constituent materials in UHPC to create capillary porosity at microscale. Further, we study the mechanical properties of C-S-H in concrete specimens subjected to high temperatures of 400°C and 1000°C. As a product of the reaction between cement and water, the properties of C-S-H are ultimately controlled by the reaction. To obtain quantitative kinetics, we use time-lapse optical microscopy to study hydration of micron sized monoclinic C₃S particles with in droplets of water of 50 [mu]m. Using Raman spectroscopy, we characterize the hydration product growing inside these droplets.
by Deepak Jagannathan.
S.M.
Zhu, Xiaodong. "Étude à l'échelle nanométrique du nano-revêtement organique efficace sur la surface de la pâte de ciment dans un environnement agressif pour des matériaux de construction durables". Electronic Thesis or Diss., Université de Lille (2022-....), 2023. https://pepite-depot.univ-lille.fr/ToutIDP/EDENGSYS/2023/2023ULILN035.pdf.
Texto completoImproving the life-time of cement paste is a significant challenge in construction sector. Surface treatment approaches, such as surface coating, surface pore sealing, and surface impregnation, have been playing a significant role to improve the durability of cement-based structures especially in preventing surface deterioration and damage. Experimental investigations indicate that surface coating, acting as a physical barrier, is an effective way for enhancing the durability of materials by avoiding the penetration either of water or hazards substances. Due to the experimental observation limitations, there is an urgency need to deeper delve the atomic level to understand the mechanism behind the success hydrophobic behavior of cement surface modified with a nano-coating treatment.Therefore, this dissertation adopts a nano-scale level study to understand and control the nano-coating process to engineer an impermeable hydrophobic Calcium-Silicate-Hydrate (CSH) surface through nano-coating of epoxy and rubber films under aggressive environment. To this end, Molecular Dynamics (MD) simulations based on a combination potential of a general force field (CLAYFF) and the consistent-valence force field (CVFF) have been employed to represent the interatomic interactions between CSH and epoxy or rubber films. A developed realistic model has been used to represent the CSH nanostructure.The thesis is dedicated, first, to study deeply the hydrated surface properties of CSH paste in order to thoroughly understand the hydrophilic nature of the (001) CSH surface. Then, a fully investigation has been performed on the interfacial interaction and adhesion properties between epoxy resins nano-coating and CSH surface. For that, we use diglycidyl ether of bisphenol A (DGEBA) as epoxy monomer and m-phenylenediamine (MPD) as hardener. Thereafter, an in-depth analysis of a hydrophobic rubber nano-coating process onto CSH surface is explored. Four types of rubber are employed, as TPI (1,4-trans-Polyisoprene), CPI (1,4-cis-Polyisoprene), TPB (1,4-trans-Polybutadiene), and CPB (1,4-cis-Polybutadiene). Finally, the present work is devoted to analyze the interfacial deterioration process between epoxy/rubber nano-coating of CSH surfaces under aggressive environment, like a salty water (4 wt.% of NaCl).Results obtained indicate that epoxy and rubber coated CSH surface energy are drastically dropped to the range of 33.7 mJ/m2- 48.4 mJ/m2, which extremely reduces the hydrophilicity of the CSH surface. The averaged contact angle between water-nanodroplet and rubber coated CSH surface is found in range of 92.85° and 98.11°. The calculated interfacial adhesion between organic-coatings (epoxy and rubber) and CSH is in range of 49.42 mJ/m2 to 102.81 mJ/m2. Additionally, m-phenylenediamine (MPD) would highly improve the epoxy nano-coating efficiency. Regarding rubber nano-coating, it is found that coating process with TPI (1,4-trans-Polyisoprene) and CPB (1,4-cis-Polybutadiene) than CPI (1,4-cis-Polyisoprene) and TPB (1,4-trans-Polybutadiene) will enhance efficiently the impermeability of CSH paste. Under aggressive conditions, non-fully epoxy nano-coating is detached more distorted in 4 wt.% of NaCl solution due to the chlorine ions, which are responsible to attack the CSH surface. A continuous well-distributed rubber nano-coating is capable to make CSH impermeable under harsh environment leading to a promising future for sustainable cementitious materials.The doctoral thesis concludes the feasibility and reliability of nano-coating by rubber film to prevent the interfacial deterioration of CSH surfaces in aggressive environment and to improve the impermeability of nano-coated CSH surfaces for more durable cementitious materials
Capítulos de libros sobre el tema "Cementitious hydrates"
Ahn, Ji Whan, Kwang Suk You, Gi Chun Han y Kye Hong Cho. "Stabilization Behavior of Heavy Metals Derived from Wastes on Cementitious Minerals and Hydrates". En Materials Science Forum, 630–33. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-995-4.630.
Texto completoTits, J., X. Gaona, N. Macé, D. Kulik, T. Stumpf, C. Walther, G. Geipel y E. Wieland. "Immobilisation of Uraniumvi in Cementitious Materials: Evidence for Structural Incorporation in Calcium–Silicate–Hydrates and Solid Solution Formation". En Proceedings of the 10th International Congress for Applied Mineralogy (ICAM), 699–706. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-27682-8_84.
Texto completoChen, W., J. Xiang, Y. Gao y Z. Zhang. "Effects of Graphene Oxide Content on the Reinforcing Efficiency of C–S–H Composites: A Molecular Dynamics Study". En Lecture Notes in Civil Engineering, 521–26. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_55.
Texto completoRamu, Yogesh Kumar, Paul Stephen Thomas, Kirk Vessalas y Vute Sirivivatnanon. "Submicroscopic Evaluation Studies to Minimize Delayed Ettringite Formation in Concrete for a Sustainable Industry and Circular Economy". En Lecture Notes in Civil Engineering, 445–55. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_45.
Texto completoDuan, W., Y. Zhuge y Y. Liu. "Effect of Blending Alum Sludge and Ground Granulated Blast-Furnace Slag as Cement Replacement to Mitigate Alkali-Silica Reaction". En Lecture Notes in Civil Engineering, 93–102. Singapore: Springer Nature Singapore, 2023. http://dx.doi.org/10.1007/978-981-99-3330-3_12.
Texto completoRivas Murillo, J., R. Mohan y A. Mohamed. "Constitutive Material Models for High Strain Rate Behavior of Cementitious Materials from Material Chemistry—Molecular Dynamics Modeling Methodology with Illustrative Application to Hydrated Calcium Silicate Hydrate Jennite". En Blast Mitigation Strategies in Marine Composite and Sandwich Structures, 423–42. Singapore: Springer Singapore, 2017. http://dx.doi.org/10.1007/978-981-10-7170-6_22.
Texto completoHERFORT, DUNCAN y BARBARA LOTHENBACH. "Ternary phase diagrams applied to hydrated cement". En A Practical Guide to Microstructural Analysis of Cementitious Materials, 485–502. CRC Press, 2015. http://dx.doi.org/10.1201/b19074-12.
Texto completoGhosh, Aditya Shankar y Dr Tapash Kumar Roy. "EFFECT OF RICE HUSK ASH AS SUPPLEMENTARY CEMENTITIOUS MATERIAL FOR RIGID PAVEMENT CONSTRUCTION". En Futuristic Trends in Construction Materials & Civil Engineering Volume 3 Book 4, 193–204. Iterative International Publishers, Selfypage Developers Pvt Ltd, 2024. http://dx.doi.org/10.58532/v3bice4p7ch1.
Texto completoActas de conferencias sobre el tema "Cementitious hydrates"
Owada, Hitoshi, Tomoko Ishii, Mayumi Takazawa, Hiroyasu Kato, Hiroyuki Sakamoto y Masahito Shibata. "Modeling of Alteration Behavior on Blended Cementitious Materials". En ASME 2011 14th International Conference on Environmental Remediation and Radioactive Waste Management. ASMEDC, 2011. http://dx.doi.org/10.1115/icem2011-59096.
Texto completoOzbulut, Osman E., Zhangfan Jiang y Guohua Xing. "Evaluation of Various Factors on Electrical Properties of GNP-Reinforced Mortar Composites". En ASME 2018 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/smasis2018-8062.
Texto completoJohn, Emerson E., W. Micah Hale y R. Panneer Selvam. "Effect of High Temperatures and Heating Rates on High Strength Concrete for Use as Thermal Energy Storage". En ASME 2010 4th International Conference on Energy Sustainability. ASMEDC, 2010. http://dx.doi.org/10.1115/es2010-90096.
Texto completoThienoosan, S., D. J. C. Y. Goonewardena y G. Tharmarajah. "Physical and Mechanical Characteristics of Lime-based Cementitious Grout". En SLIIT 2nd International Conference on Engineering and Technology. SLIIT, 2023. http://dx.doi.org/10.54389/hdst9141.
Texto completoChuang, Li, Tomohiro Kajio, Eiji Owaki, Yuka Morinaga, Yogarajah Elakeswaran y Toyoharu Nawa. "Sulphate attack in slag-blended cementitious materials hydrated wth sodium sulphate". En Fifth International Conference on Sustainable Construction Materials and Technologies. Coventry University and The University of Wisconsin Milwaukee Centre for By-products Utilization, 2019. http://dx.doi.org/10.18552/2019/idscmt5110.
Texto completo"On the Occurrence of CAH10 in Hydrated Calcium Sulfoaluminate Cements". En SP-349: 11th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete. American Concrete Institute, 2021. http://dx.doi.org/10.14359/51732744.
Texto completoPaiva, Rayane de Lima Moura, Lucas Rosse Caldas, Patrícia Brandão Souza, Giulia Fea Oliveira y Romildo Dias Toledo Filho. "Evaluation of Bio-Based Earth Engineered Mortars for Low Energy and Carbon Buildings in Tropical and Subtropical Climates". En 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.203.
Texto completoSharp, J. H., J. Hill, N. B. Milestone y E. W. Miller. "Cementitious Systems for Encapsualation of Intermediate Level Waste". En ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4554.
Texto completo"Optimization Performance of High Volume Fly Ash Self-Consolidating Mixtures with Hydrated Lime (Mortar Component)". En SP-320:10th ACI/RILEM International Conference on Cementitious Materials and Alternative Binders for Sustainable Concrete. American Concrete Institute, 2017. http://dx.doi.org/10.14359/51701084.
Texto completoPaiva, Rayane de Lima Moura, Adriana Paiva Souza Martins, Lucas Rosse Caldas, Oscar A. M. Reales y Romildo Dias Toledo Filho. "Earth-Based Mortars: Mix Design, Mechanical Characterization and Environmental Performance Assessment". En 4th International Conference on Bio-Based Building Materials. Switzerland: Trans Tech Publications Ltd, 2022. http://dx.doi.org/10.4028/www.scientific.net/cta.1.271.
Texto completoInformes sobre el tema "Cementitious hydrates"
Ucak-Astarlioglu, Mine, Jedadiah Burroughs, Charles Weiss, Kyle Klaus, Stephen Murrell, Samuel Craig, Jameson Shannon, Robert Moser, Kevin Wyss y James Tour. Graphene in cementitious materials. Engineer Research and Development Center (U.S.), diciembre de 2023. http://dx.doi.org/10.21079/11681/48033.
Texto completoQadri, Faisal y Nishant Garg. Reducing Concrete Cure Times for Bridge Substructure Components and Box Culverts. Illinois Center for Transportation, septiembre de 2023. http://dx.doi.org/10.36501/0197-9191/23-018.
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