Documents disponibles écrits par cet auteur

Characterisation of geometrical properties of concrete using passive infrared thermography / Mathilde Larget in European journal of environmental and civil engineering, Vol. 15 N° 5 (Mai 2011) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 15 N° 5 (Mai 2011) . - pp. 759-772 Titre : Characterisation of geometrical properties of concrete using passive infrared thermography Type de document : texte imprimé Auteurs : Mathilde Larget, Auteur ; Denys Breysse, Auteur ; colette Sirieix, Auteur Année de publication : 2011 Article en page(s) : pp. 759-772 Note générale : Génie Civil Langues : Français (fre) Mots-clés : Infrared  thermography  Modelling  Fourier’s  equation  Concrete  Non-destructive  testing Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper talks about thermal response of concrete during natural warming up. An experimental study is carried out. Experimental warming up curves are compared with numerical modelling based of the Fourier equation. In the last part we study the influence of density, specific heat and thermal conductivity on diffusivity coefficient. Study proves that infrared passive thermography performed to monitor the natural warming up of concrete is sensitive to variable thickness of concrete. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16146 [article] Characterisation of geometrical properties of concrete using passive infrared thermography [texte imprimé] / Mathilde Larget, Auteur ; Denys Breysse, Auteur ; colette Sirieix, Auteur . - 2011 . - pp. 759-772. Génie Civil Langues : Français (fre) in European journal of environmental and civil engineering > Vol. 15 N° 5 (Mai 2011) . - pp. 759-772 Mots-clés : Infrared  thermography  Modelling  Fourier’s  equation  Concrete  Non-destructive  testing Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : This paper talks about thermal response of concrete during natural warming up. An experimental study is carried out. Experimental warming up curves are compared with numerical modelling based of the Fourier equation. In the last part we study the influence of density, specific heat and thermal conductivity on diffusivity coefficient. Study proves that infrared passive thermography performed to monitor the natural warming up of concrete is sensitive to variable thickness of concrete. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16146

Evaluation of the seismic vulnerability of quasi symmetrical reinforced concrete structures with shear walls / Miloud Hemsas in European journal of environmental and civil engineering, Vol. 14 N° 5 (Mai 2010) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 14 N° 5 (Mai 2010) . - pp. 617-636 Titre : Evaluation of the seismic vulnerability of quasi symmetrical reinforced concrete structures with shear walls Type de document : texte imprimé Auteurs : Miloud Hemsas, Auteur ; Sidi Mohammed Elachachi, Auteur ; Denys Breysse, Auteur Année de publication : 2011 Article en page(s) : pp. 617-636 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Structural  wall  Macro-element  Pushover  Inelastic  spectra  Capacity  curve  Performance  Vulnerability  Monte-Carlo  Fragility  function Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The vulnerability assessment of structures is a key element for earthquake prevention and mitigation strategies. In this study, we focus at one structure's type, namely a quasi symmetrical reinforced concrete structure with structural walls. The structure is discretized into a set of macro-elements, each macro-element being representative of a structure's floor. The estimated performance level achieved during a seismic action is obtained from capacity curves (based on static pushover analysis). The performance analysis of the structure is a probabilistic analysis since both the response spectrum (action) and the materials properties (resistance) are random. A parametric study was conducted to determine the vulnerability cumulative distribution functions and to identify the parameters that control them. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp [article] Evaluation of the seismic vulnerability of quasi symmetrical reinforced concrete structures with shear walls [texte imprimé] / Miloud Hemsas, Auteur ; Sidi Mohammed Elachachi, Auteur ; Denys Breysse, Auteur . - 2011 . - pp. 617-636. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 14 N° 5 (Mai 2010) . - pp. 617-636 Mots-clés : Structural  wall  Macro-element  Pushover  Inelastic  spectra  Capacity  curve  Performance  Vulnerability  Monte-Carlo  Fragility  function Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The vulnerability assessment of structures is a key element for earthquake prevention and mitigation strategies. In this study, we focus at one structure's type, namely a quasi symmetrical reinforced concrete structure with structural walls. The structure is discretized into a set of macro-elements, each macro-element being representative of a structure's floor. The estimated performance level achieved during a seismic action is obtained from capacity curves (based on static pushover analysis). The performance analysis of the structure is a probabilistic analysis since both the response spectrum (action) and the materials properties (resistance) are random. A parametric study was conducted to determine the vulnerability cumulative distribution functions and to identify the parameters that control them. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/resnum.jsp

Methodology and tools for risk evaluation in construction projects using Risk Breakdown Structure / Mehdizadeh Rasool in European journal of environmental and civil engineering, Vol. 16 Supplément N° 1 (Juin 2012) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 16 Supplément N° 1 (Juin 2012) . - pp. s78-s98 Titre : Methodology and tools for risk evaluation in construction projects using Risk Breakdown Structure Type de document : texte imprimé Auteurs : Mehdizadeh Rasool, Auteur ; Taillandier Franck, Auteur ; Denys Breysse, Auteur Année de publication : 2012 Article en page(s) : pp. s78-s98 Note générale : Génie Civil Langues : Français (fre) Mots-clés : Risk  management  Risk  breakdown  structure  Construction  Risk  analysis  Project  risk Résumé : Risk Breakdown Structure (RBS) is a hierarchically organised depiction of the identified project risks arranged by risk category and subcategory that identifies the various areas and causes of potential risks. This type of representation has many advantages and is a suitable tool especially for risk management of construction projects, since it offers a synthetic view on risks, each stakeholder can have his or her own view on the project and it is compatible with evolutionary and dynamic nature of project risks. However, RBS suffers several drawbacks such as lack of consensus on how to develop an RBS for a new project, lack of clarity and inconsistencies in definition of risk categories and lack of rules enabling transfer of qualitative/quantitative information of risks across the tree. This article will focus on the last case, proposing an advanced method for measurement and propagation of risks in RBS. ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/full/10.1080/19648189.2012.681959 [article] Methodology and tools for risk evaluation in construction projects using Risk Breakdown Structure [texte imprimé] / Mehdizadeh Rasool, Auteur ; Taillandier Franck, Auteur ; Denys Breysse, Auteur . - 2012 . - pp. s78-s98. Génie Civil Langues : Français (fre) in European journal of environmental and civil engineering > Vol. 16 Supplément N° 1 (Juin 2012) . - pp. s78-s98 Mots-clés : Risk  management  Risk  breakdown  structure  Construction  Risk  analysis  Project  risk Résumé : Risk Breakdown Structure (RBS) is a hierarchically organised depiction of the identified project risks arranged by risk category and subcategory that identifies the various areas and causes of potential risks. This type of representation has many advantages and is a suitable tool especially for risk management of construction projects, since it offers a synthetic view on risks, each stakeholder can have his or her own view on the project and it is compatible with evolutionary and dynamic nature of project risks. However, RBS suffers several drawbacks such as lack of consensus on how to develop an RBS for a new project, lack of clarity and inconsistencies in definition of risk categories and lack of rules enabling transfer of qualitative/quantitative information of risks across the tree. This article will focus on the last case, proposing an advanced method for measurement and propagation of risks in RBS. ISSN : 1964-8189 En ligne : http://www.tandfonline.com/doi/full/10.1080/19648189.2012.681959

Modelling time to failure of notched beams under random humidity variations of Atlantic environment / Myriam Chaplain in European journal of environmental and civil engineering, Vol. 15 N° 7 (Août 2011) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 15 N° 7 (Août 2011) . - pp. 1059-1072 Titre : Modelling time to failure of notched beams under random humidity variations of Atlantic environment Type de document : texte imprimé Auteurs : Myriam Chaplain, Auteur ; Denys Breysse, Auteur ; Antoine Marache, Auteur Année de publication : 2011 Article en page(s) : pp. 1059-1072 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Wood  Relative  humidity  modelling  Crack  initiation  and  propagation  Lifetime  modelling Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The mechanical response and durability of timber structures is highly influenced by the atmospheric conditions. Wood mechanical properties depend on moisture content, on temperature and on their variations. To study the lifetime of timber components in their environment, climatic variations are simulated and a lifetime model is proposed. The model predicts the incubation time and the time of crack propagation until the failure. As temperature has a smaller influence on the time to failure than relative humidity, its effects are not directly taken into account in the model. Predictions of the proposed model for various air humidity simulations are compared to creep test results obtained on notched beams under various climatic conditions. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16507 [article] Modelling time to failure of notched beams under random humidity variations of Atlantic environment [texte imprimé] / Myriam Chaplain, Auteur ; Denys Breysse, Auteur ; Antoine Marache, Auteur . - 2011 . - pp. 1059-1072. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 7 (Août 2011) . - pp. 1059-1072 Mots-clés : Wood  Relative  humidity  modelling  Crack  initiation  and  propagation  Lifetime  modelling Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : The mechanical response and durability of timber structures is highly influenced by the atmospheric conditions. Wood mechanical properties depend on moisture content, on temperature and on their variations. To study the lifetime of timber components in their environment, climatic variations are simulated and a lifetime model is proposed. The model predicts the incubation time and the time of crack propagation until the failure. As temperature has a smaller influence on the time to failure than relative humidity, its effects are not directly taken into account in the model. Predictions of the proposed model for various air humidity simulations are compared to creep test results obtained on notched beams under various climatic conditions. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16507

Quality of NDT measurements and accuracy of concrete physical properties quantitative assessment / Denys Breysse in European journal of environmental and civil engineering, Vol. 15 N° 4 (Avril 2011) 

Public ISBD [article]  in European journal of environmental and civil engineering > Vol. 15 N° 4 (Avril 2011) . - pp. 619-632 Titre : Quality of NDT measurements and accuracy of concrete physical properties quantitative assessment Type de document : texte imprimé Auteurs : Denys Breysse, Auteur ; Mathilde Larget, Auteur ; Zoubir Mehdi Sbartai, Auteur Année de publication : 2011 Article en page(s) : pp. 619-632 Note générale : Génie Civil Langues : Anglais (eng) Mots-clés : Concrete  Condition  assessment  Diagnostics  Inverse  problem  Material  variability  Non  destructive  evaluation Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Assessing concrete condition is of major interest either for looking at weak or more damaged areas, or for reliability computations. NDT measurements provide a valuable way of offering a quick overview on the material condition. One of their main weaknesses is that their results cannot be directly linked with material properties. This paper presents how a collaborative research programme has been developed such as: (a) to select the best appropriate measurement techniques, (b) identify calibration laws enabling the quantitative material condition assessment, (c) identify possible valuable combinations of techniques. This strategy is applied to laboratory specimen data as well as to on site data. A focus is also placed on the reliability of the material condition assessment. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16049 [article] Quality of NDT measurements and accuracy of concrete physical properties quantitative assessment [texte imprimé] / Denys Breysse, Auteur ; Mathilde Larget, Auteur ; Zoubir Mehdi Sbartai, Auteur . - 2011 . - pp. 619-632. Génie Civil Langues : Anglais (eng) in European journal of environmental and civil engineering > Vol. 15 N° 4 (Avril 2011) . - pp. 619-632 Mots-clés : Concrete  Condition  assessment  Diagnostics  Inverse  problem  Material  variability  Non  destructive  evaluation Index. décimale : 624 Constructions du génie civil et du bâtiment. Infrastructures. Ouvrages en terres. Fondations. Tunnels. Ponts et charpentes Résumé : Assessing concrete condition is of major interest either for looking at weak or more damaged areas, or for reliability computations. NDT measurements provide a valuable way of offering a quick overview on the material condition. One of their main weaknesses is that their results cannot be directly linked with material properties. This paper presents how a collaborative research programme has been developed such as: (a) to select the best appropriate measurement techniques, (b) identify calibration laws enabling the quantitative material condition assessment, (c) identify possible valuable combinations of techniques. This strategy is applied to laboratory specimen data as well as to on site data. A focus is also placed on the reliability of the material condition assessment. DEWEY : 624 ISSN : 1964-8189 En ligne : http://ejece.revuesonline.com/article.jsp?articleId=16049

Random temperature and humidity models in Atlantic environment / Denys Breysse in European journal of environmental and civil engineering, Vol. 15 N° 7 (Août 2011) 

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