Academic literature on the topic 'Coffrage (construction en béton)'
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Journal articles on the topic "Coffrage (construction en béton)"
Boutemy, Camille, Arthur Lebée, Mélina Skouras, Marc Mimram, and Olivier Baverel. "Modélisation et conception d’un coffrage réutilisable pour la fabrication de coques minces en béton de formes complexes." SHS Web of Conferences 147 (2022): 09003. http://dx.doi.org/10.1051/shsconf/202214709003.
Full textLIBESSART, Laurent. "Caractérisation de l'interface béton/coffrage; influence des agents de démoulage." Revue Française de Génie Civil 8, no. 1 (January 2004): 124. http://dx.doi.org/10.1080/12795119.2004.9692585.
Full textNguyen, Thi Lien Huong, Nicolas Roussel, and Philippe Coussot. "Prédiction de la capacité d'un béton frais à remplir un coffrage." Revue Européenne de Génie Civil 11, no. 4 (April 2007): 463–75. http://dx.doi.org/10.1080/17747120.2007.9692940.
Full textNguyen, Thi Lien Huong, Nicolas Roussel, and Philippe Coussot. "Prédiction de la capacité d'un béton frais à remplir un coffrage." Revue européenne de génie civil 11, no. 4 (May 14, 2007): 463–75. http://dx.doi.org/10.3166/regc.11.463-475.
Full textBert, Yahel, Yves Stassen, and Hafid Tabet. "Un retour d’expérience pour les ouvrages maritimes : l’urbanisation en mer à Monaco." E3S Web of Conferences 346 (2022): 04014. http://dx.doi.org/10.1051/e3sconf/202234604014.
Full textFrédéric, Bamuache Sadiki. "Remèdes Aux Conséquence Dues À La Mauvaise Application Du Beton Armé Dans La Construction Des Immeubles En Ville De Goma." British Journal of Multidisciplinary and Advanced Studies 4, no. 3 (July 3, 2023): 101–12. http://dx.doi.org/10.37745/bjmas.2022.0230.
Full textGuirao Soro, Gloria. "Anselm Jappe (2020): Béton, arme de construction massive du capitalisme. Montreuil: l’Échappée." Digithum, no. 30 (December 20, 2023): 1–3. http://dx.doi.org/10.7238/d.v0i30.417216.
Full textRoelfstra, P. E., H. Sadouki, and F. H. Wittmann. "Le béton numérique." Materials and Structures 18, no. 5 (September 1985): 327–35. http://dx.doi.org/10.1007/bf02472402.
Full textLicordari, Mariangela. "La propagation du béton armé au Portugal: les bâtiments industriels comme moyens de divulgation de la technique." Revista de História da Sociedade e da Cultura 16 (December 30, 2016): 321–42. http://dx.doi.org/10.14195/1645-2259_16_14.
Full textRahim, Ouahab, Djamel Achoura, Mohammed Benzerara, and Céline Bascoulès-Perlot. "Experimental contribution to the study of the physic-mechanical behavior and durability of high-performance concretes based on ternary binder (cement, silica fume and granulated blast furnace slag)." Frattura ed Integrità Strutturale 16, no. 59 (December 22, 2021): 344–58. http://dx.doi.org/10.3221/igf-esis.59.23.
Full textDissertations / Theses on the topic "Coffrage (construction en béton)"
Vanhove, Yannick. "Contribution à l'étude du frottement d'un béton autoplaçant contre une surface métallique : application aux poussées contre les coffrages." Artois, 2001. http://www.theses.fr/2001ARTO0203.
Full textThe main objective of this thesis is to investigate the friction of fresh concrete with metallic formwork. A specially designed tribometer was developed to investigate such friction and was adapted for various types of concrete mixtures. The originality of this work lies mainly in the fact that it concerns a commonly used material for wich the friction against the forming surface has not been sufficiently investigated. A new approach is used in this study to predict the lateral pressure induced by the fresh concrete pressure. A particular interest is the formwork pressure exerted by highly flowable concrete, or self-compacting concrete. When the concrete is cast into place, a limit interface layer reduces the frictional stresses with the formwork material. When the pressure applied on the concrete is greater than a certain critical pressure, some of the cement particles and fines come into direct contact with the formwork material, and the concrete begins to follow a granular comportment. This leads to greater increase in friction stress which varies with the flow velocity between the rising fresh concrete and formwork material. When a demoulding agent is applied at the interface, the friction stress depends mainly on the physico-chimical characteristics of the resulting film of paste at the interface. In certain cases, these agents can maintain the integrity of the limit layer near the wall surface. This allows, during the flow of the plastic concrete, to reduce the friction at the wall compared to similar situation where a demoulding agent is not used. Well established models used for silos were used to predict the formwork pressure exerted by fresh concrete. Similary between the evolution of concrete pressure and ensiled granular mediums one was observed on site, though the strains are different. From these observations, several models derived from Janssen's model, have been proposed. The model adapted in the case of fresh concrete allows the prediction with satisfaction formwork pressure. This study can therefore enable the used of the designed tribometer to test a variety of material and placement parameters to predict formwork pressure instead of large-scale and often expensive field tests
Bouharoun, Samir. "Comportement tribologique des huiles de décoffrage à l'interface béton/coffrage : influence de la formulation du béton." Electronic Thesis or Diss., Artois, 2011. http://www.theses.fr/2011ARTO0209.
Full textIn a context where sustainable development has become a major priority, the companies in the building field must face to new requirements in terms of respect of the environment. In particular, during the concrete pouring, a mineral release agent, poorly biodegradable is currently used as separating layer non-stick. The nature of this oil creates significant risks of environmental pollution. New formulations of release agent of vegetable origin were developed.The appearance of this new product range requires a sufficient knowledge of their behavior at the interface concrete/release agent/formwork. This report contributes to the study the effect of the concrete composition on the tribological behavior at the interface concrete/formwork with two release agents of different nature (vegetable release agent and mineral release agent). The zone of concrete near the formwork was studied without release agents. First, the evolution of the density of the concrete at the approach of a wall was evaluated as a function of the contact pressure and the past volume. Then, a comprehensive analysis of this fresh layer was carried out to estimate the W/B ratio and the amount of paste mobilized close to the formwork. A physicochemical study was performed by reconstituting the interstitial medium of the interface concrete/release agent/formwork containing a different dosage of oil and superplasticizer. Several adapted techniques to these complex medium were used to evaluate the formation of soaps and to determine the stability of the obtained emulsions. This thesis ends with a study of the friction of fresh concrete against the formwork with and without release agent using a plan/plan tribometer. Many formulations of concrete are studied. The results were allowed to understand the mechanism of action of the fines element and the dosage of superplasticizer at the interfaces concrete/formwork and concrete/release agent/formwork. In the case of vegetable release agent, the soap formed from the esters and fatty acids contributes to reduce the friction by stabilizing the emulsion and organizing the interface. However, the presence of the superplasticizer is necessary to obtain a high performance for the mineral release agent
Spitz, Nicolas. "Développement d'un procédé frugal de démoulage in situ des parois de coffrage – Etude des signatures fonctionnelles des parois de coffrage." Thesis, Paris, ENSAM, 2019. http://www.theses.fr/2019ENAM0001.
Full textIn the civil engineering industry, the formwork oil spraying has become essential to avoid the concrete friction and adhesion on the formwork skins. Their usage on site is limited because their application is time consuming and polluting. Nowadays, the challenges lie in the development of new alternatives to oils based on surface signatures of formwork skins. Even though a large amount of work investigates novel formulations for ecological oils, few studies investigate the effect of these signatures on interfacial phenomena acting between concrete and formwork. Thus, in the present thesis work, the concrete friction on formwork skins has been studied first using a plan/plan tribometer simulating the condition of concrete forming. After developing a small laboratory-scale instrumented test to reproduce the formwork removal process on site, concrete adhesion was secondly quantified. The analysis of experimental data and the multi-physics characterization of formwork surfaces make it possible to establish the functionality of the signatures of skins on the friction and the adhesion of concrete, respectively. These correlations are used to propose an ideal solution of formwork limiting these phenomena to the interface concrete-formwork
Bouharoun, Samir. "Comportement tribologique des huiles de décoffrage à l'interface béton/coffrage : influence de la formulation du béton." Thesis, Artois, 2011. http://www.theses.fr/2011ARTO0209/document.
Full textIn a context where sustainable development has become a major priority, the companies in the building field must face to new requirements in terms of respect of the environment. In particular, during the concrete pouring, a mineral release agent, poorly biodegradable is currently used as separating layer non-stick. The nature of this oil creates significant risks of environmental pollution. New formulations of release agent of vegetable origin were developed.The appearance of this new product range requires a sufficient knowledge of their behavior at the interface concrete/release agent/formwork. This report contributes to the study the effect of the concrete composition on the tribological behavior at the interface concrete/formwork with two release agents of different nature (vegetable release agent and mineral release agent). The zone of concrete near the formwork was studied without release agents. First, the evolution of the density of the concrete at the approach of a wall was evaluated as a function of the contact pressure and the past volume. Then, a comprehensive analysis of this fresh layer was carried out to estimate the W/B ratio and the amount of paste mobilized close to the formwork. A physicochemical study was performed by reconstituting the interstitial medium of the interface concrete/release agent/formwork containing a different dosage of oil and superplasticizer. Several adapted techniques to these complex medium were used to evaluate the formation of soaps and to determine the stability of the obtained emulsions. This thesis ends with a study of the friction of fresh concrete against the formwork with and without release agent using a plan/plan tribometer. Many formulations of concrete are studied. The results were allowed to understand the mechanism of action of the fines element and the dosage of superplasticizer at the interfaces concrete/formwork and concrete/release agent/formwork. In the case of vegetable release agent, the soap formed from the esters and fatty acids contributes to reduce the friction by stabilizing the emulsion and organizing the interface. However, the presence of the superplasticizer is necessary to obtain a high performance for the mineral release agent
Andriamanantsilavo, Ny Riana. "Comportement des matériaux cimentaires dans un coffrage : expérimentation, modélisation et simulation de la poussée et du processus de maturation." Lorient, 2003. http://www.theses.fr/2003LORIS029.
Full textHéroux, Sandrine. "Coffrer. Recycler. Réutiliser. Coffrages complexes en cire réutilisable informés par simulations acoustiques et algorithmes génétiques." Master's thesis, Université Laval, 2020. http://hdl.handle.net/20.500.11794/40166.
Full textThis research adresses the themes of digital fabrication, complex formwork and architectural acoustics, which it interrelates through a research by design approach. Its main objective is to develop a design process based on an acoustic performance parameter and a fabrication technique for concrete that will be suitable to generate future projects. The first chapter identifies the main digital manufacturing technologies for the production of non-standard concrete formwork. A method to be explored is then selected: wax formwork milled by a three-axis machine, a reusable material that therefore does not produce waste. The second chapter focuses on the generation of these complex forms by exploring the potential of architectural acoustics coupled with genetic algorithms to inform them. The following sections aim to develop a methodology for the creation of wax formwork, while defining the limits and validating the advantages of this production method. The objective is to subsequently transpose these features into the creation of a genetic algorithm that automates the iterative process of simulation, analysis and creation of an optimal non-standard acoustic geometry. To achieve this, the moulding of various concrete prototypes is performed, according to which a specific wax manufacturing method is developed. A series of specific recommendations for the modelling of these formworks results from these physical tests. Pursuant to the previous findings, genetic algorithms coupled with a simulation by ray tracing are defined. They generate a curved acoustic concrete reflector that distributes sound uniformly to a specific area, an element that exploits the low absorption coefficient of this material. This work is subsequently applied and informed by the execution of a concrete concert hall project that is the result of this feedback between theory, practice and design.
Aggoun, Salima. "Etude du comportement du béton coffre non arme vis a vis de la fissuration." Lyon, INSA, 1992. http://www.theses.fr/1992ISAL0029.
Full textThe use of an unreinforced formed concrete lining presently appears as the best technical and economic solution to ensure the good stability and proper operation of rock excavated tunnels. However, this type of structure shows a systematic crack formation. In the absence of any outer load, cracking in this type of lining is closely connected to the physico-chemical characteristics of the material and to the environment in witch this materiel is ageing. This phenomenon is worsened by conditions peculiar to tunnels, i. E. : - on the one part, the strains hindered by the surrounding ground,and on the other part the pre-cast invert the presence of geometric over breaks which - lead to variations in the lining thickness. The importance of thermal et hydric gradients resulting from the above phenomena are demonstrated by field tests. Numerical simulations based on laboratory tests allow to assess the resulting stresses which lead to - a crossing and practically unavoidable crack formation resulting from thermal effects. The opening width in this type of cracks and their intensity especially depend on the presence of over breaks and cement proportioning. - a superficial skin cracking resulting from the hydric effects. Checking the investigated tunnels allows to find the cracks planned from our computations
Chadfeau, Calypso. "Caractérisations multiéchelles de surfaces cimentaires de parement en fonction de différentes surfaces coffrantes." Thesis, Strasbourg, 2020. http://www.theses.fr/2020STRAD005.
Full textThe objective of this work is to study the interaction between cement and different types of formwork surfaces by analysing the surface condition of the raw cement paste 24 hours old and that of formwork surfaces at different scales as well as their demoulding performance. Surface characterisation procedures combining interferometry, SEM + EDS, Raman spectroscopy and AFM Peak Force are developed. These multiscale characterisations allow the demonstration of the impact of the physico-chemical properties of formwork surfaces on cementitious surfaces at different scales and the analysis of their influence on adhesion to formwork. The effect of surface geometry and surface energy of formwork surfaces on the morphological, chemical and mechanical characteristics of cement surfaces is analysed, from millimetre to nanometre, with a discussion on the possible characterisation of cement phases more or less hydrated
El, Cheikh Khadija. "Etude de l'interface milieu granulaire : paroi rugueuse par approches expérimentale et numérique : application aux bétons." Thesis, Artois, 2015. http://www.theses.fr/2015ARTO0204/document.
Full textWhen fresh concrete is placed into formworks or during concrete pumping, a layer, called boundary layer, consisting of water and fines, is formed at the interface. Various studies have shown that the friction between the concrete and the wall (form or pipe) is closely linked to the rheological properties of the boundary layer, its composition and the wall roughness. This study aims at understanding the wall-concrete interface phenomena at a grain scale. However, due to the complex nature of the two bodies in contact: boundary layer and wall, a simplified system has been considered. The concrete has been simplified by assuming that it consists of monodispersed spherical grains and without cohesion. Moreover, the irregular asperities of the wall roughness are represented by simple geometries. The study is based on the use of two models, an analog model and a numerical model.The analog approach consists of an experimental device fitted on the tribometer. The test consists in moving rough plates under stacks of confined monodispersed beads. The roughness of the plate is represented by crenels. Three plates representing different roughnesses are used. The experimental results show that the friction and the interface mechanisms are affected by the interface conditions (velocity, roughness, pressure).The numerical approach is based on the Discrete Element Method (DEM). The wall roughness is modeled by an assembly of spheres fixed on a moving plane. The results obtained by numerical simulations compared with those of the analog model show a good confrontation. As well, the numerical study carried out with periodic boundary conditions and for different roughnesses shows that the interface conditions affect the friction and the behavior of the medium near the interface (velocities profiles, thickness of the shear layer, etc.)
Omran, Ahmed Fathy. "Pression exercée sur le coffrage par le béton auto-plaçant." Thèse, Université de Sherbrooke, 2009. http://savoirs.usherbrooke.ca/handle/11143/1912.
Full textBooks on the topic "Coffrage (construction en béton)"
Société canadienne d'hypothèques et de logement., ed. Murs en béton architectural préfabriqué. Ottawa, Ont: Société canadienne d'hypothèques et de logement, 2002.
Find full text1934-, Favre R., ed. Dimensionnement des structures en béton: Dalles, murs, colonnes et fondations. Lausanne: Presses polytechniques et universitaires romandes, 1990.
Find full textCentre des techniques d'ouvrages d'art (France). Ponts-routes à poutres préfabriquées précontraintes par adhérence: PRAD : guide de conception / document réalisé et diffusé par le Service d'études techniques des routes et autoroutes, Centre des techniques d'ouvrages d'art ; [rédigé par V. Le Khac et Y.-M. Jaffré]. Bagneux: SETRA Service d'études techniques des routes et autoroutes, 1996.
Find full textBook chapters on the topic "Coffrage (construction en béton)"
Soshiroda, T., K. Hayakawa, K. Yoda, and M. Tanaka. "Effects of Cellulose Ether on Homogeneity of Concrete in Structures — Relating Quality Variations and Construction Joints." In Adhesion between polymers and concrete / Adhésion entre polymères et béton, 125–33. Boston, MA: Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-3454-3_14.
Full textANTONI, Jean-Philippe. "Les matériaux du tissu urbain." In Urbanisme et aménagement des villes, 63–99. ISTE Group, 2024. http://dx.doi.org/10.51926/iste.9151.ch2.
Full textConference papers on the topic "Coffrage (construction en béton)"
THAUVIN, Benoit, Nicolas ROUXEL, and Stéphane PASQUIET. "Évaluation du gain de durabilité apporté par l'utilisation d'un procédé de nappe de coffrage drainante pour un béton en site maritime." In Journées Nationales Génie Côtier - Génie Civil. Editions Paralia, 2010. http://dx.doi.org/10.5150/jngcgc.2010.086-t.
Full textRollet, M., and S. Ourties. "Le projet informatique du groupe d'industriel G5: - faciliter i'utilisation des composants béton -faciliter la production des composants béton." In Colloque CAO et Robotique en Architecture et BTP (3rd International Symposium on Automation and Robotics in Construction). Paris: Hermes, 1986. http://dx.doi.org/10.22260/isarc1986/0029.
Full textReports on the topic "Coffrage (construction en béton)"
Habert, Guillaume, and Francesco Pittau. Synthèse conjointe «Constructions durables en béton» du PNR «Energie». Swiss National Science Foundation (SNSF), February 2020. http://dx.doi.org/10.46446/publication_pnr70_pnr71.2020.5.fr.
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