European journal of environmental and civil engineering : revue européenne de génie civil, Vol. 15 N° 4. European journal of environmental and civil engineering - Avril 2011
| Titre : | European journal of environmental and civil engineering : revue européenne de génie civil, Vol. 15 N° 4. European journal of environmental and civil engineering - Avril 2011 |
| Type de document : | Bulletin |
| Paru le : | 08/12/2011 |
Dépouillements
Article : texte imprimé
Martin Krause, Auteur ;
Klaus Mayer, Auteur ;
Martin Friese, Auteur
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Ultrasonic imaging of tendon ducts enables the precise localisation of grouting faults in many cases. Additionally to well known criteria for detecting grouting faults in tendon ducts recently new possibilities were developed. Two main effects i[...]
Article : texte imprimé
Laurent Laguerre, Auteur ;
Fabien Treyssede, Auteur
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Seven-wire strands are widely used in civil engineering structures for cable-stayed bridges, prestressed concrete bridges or retaining walls applications. Corrosion and fatigue induced damages are of major concern for these metallic strands. The[...]
Article : texte imprimé
Miguel Molero, Auteur ;
Ignacio Segura, Auteur ;
Sofia Aparicio, Auteur
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This paper examines the influence of the size and volume fraction of both aggregates and air voids on the ultrasonic phase velocity and attenuation coefficient measured in cementitious specimens. A multiphase approach of the Waterman-Truell (WT)[...]
Article : texte imprimé
Cédric Payan, Auteur ;
Vincent Garnier, Auteur ;
Joseph Moysan, Auteur
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For non destructive stress evaluation in prestressed concrete, we describe in this paper a promising ultrasonic method. In “ordinary” isotropic homogeneous materials such as steel, ultrasonic determination of third order elastic constants provid[...]
Article : texte imprimé
Jean-François Lataste, Auteur ;
Stephanie J. Barnett, Auteur ;
Tony Parry, Auteur
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This paper presents experimental tests carried out on steel fibre reinforced concrete samples, including mechanical tests as well as non-destructive technique (electrical resistivity) and non destructive technique on cores (X-ray). Electrical re[...]
Article : texte imprimé
Frédéric Taillade, Auteur ;
Marc Quiertant, Auteur ;
Karim Benzarti, Auteur
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A shearographic method is proposed that allows (i) to detect bonding defects (delamination or adhesive disbonds) between concrete structures and externally bonded FRP reinforcements, (ii) to assess the width of these defects, and (iii) to evalua[...]
Article : texte imprimé
Jean Dumoulin, Auteur ;
Laurent Ibos, Auteur ;
Mario Marchetti, Auteur
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In this paper, Pulse Thermography analysis was applied to detect non emergent defects in asphalt concrete used for road pavements. Experimental and numerical experimentations were run on this specific heterogeneous material. Only experimental da[...]
Article : texte imprimé
Khaled Chahine, Auteur ;
Vincent Baltazart, Auteur ;
Yide Wang, Auteur
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In measuring thin layer thickness of asphalt pavements using GPR, the sparse reflectivity series representing the layered structure of the pavement is convolved with the radar wavelet. This convolution results in masking closely spaced reflectio[...]
Article : texte imprimé
Nils Ryden, Auteur
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There is a need to develop simple and quick non-destructive tests to measure the complex dynamic modulus of asphalt over a wide frequency and temperature range, i.e. mastercurve. In this study results from free-free resonant frequency measuremen[...]
Article : texte imprimé
Géraldine Villain, Auteur ;
Loïc Le Marrec, Auteur ;
Lalaonirina Rakotomanana, Auteur
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The presented study aims at evaluating the bulk elastic Young’s modulus of six different concrete mixes as a function of porosity and water content. The impact echo method consists of a frequency analysis of ultrasonic waves generated by the imp[...]
Article : texte imprimé
Denys Breysse, Auteur ;
Mathilde Larget, Auteur ;
Zoubir Mehdi Sbartai, Auteur
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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 mai[...]
Article : texte imprimé
Gonzalo E. Gallo, Auteur ;
John S. Popovics, Auteur ;
Chapman, Patrick L., Auteur
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Corrosion in civil infrastructure causes structural failures and financial losses. Prompt and effective monitoring of corrosion can lead to failure prevention and cost savings. This paper describes the basis of a practical magnetic sensing schem[...]
Article : texte imprimé
Bérengère Lebental, Auteur ;
Anne Ghis, Auteur ;
Elisabeth Delevoye, Auteur
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We put forward an innovative method for the non-destructive testing of durability in cementitious material. It is based on microporosity probing by high-frequency ultrasonic micro-transducers. We present elements of the realisation and the chara[...]
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