References of "Courard, Luc"
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See detailDevelopment of Specifications and Performance Criteria for Surface Preparation Based on Issues Related to Bond Strength
Bissonnette, Benoît; Courard, Luc ULg; Garbacz, Andrzej et al

Report (2017)

In addition to the development of a satisfactory test procedure and recommendations to improve the overall quality of concrete repair works, the authors of this proposal intend to collaborate with various ... [more ▼]

In addition to the development of a satisfactory test procedure and recommendations to improve the overall quality of concrete repair works, the authors of this proposal intend to collaborate with various representatives from public agencies and from the industry to facilitate technological transfer. Presentations will be made in conferences and workshops in North America and Europe. At the end of the project, the results shall include two MSc theses and at least two papers in major journals, such as Concrete International or ACI Materials Journal. Also, the project should provide the basis towards a standard procedure for the evaluation of superficial cohesion of concrete, in relation with surface preparation and concrete removal techniques. Finally, recommendations and specifications could be incorporated in future versions of the ACI-ICRI Manual of Concrete Repairs as well as in DOT’s specifications. [less ▲]

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See detailAdhérence des réparations en béton: concepts, facteurs d'influence et évaluation
Bissonnette, Benoît; Courard, Luc ULg; Garbacz, Andrzej

Scientific conference (2017, February 20)

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See detailMesure de l'adhérence et principaux paramètres d'influence
Bissonnette, Benoît; Courard, Luc ULg; Garbacz, ANdrzej

Scientific conference (2017, February 20)

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See detailNotions de compatibilité relatives au développement de l'adhérence
Courard, Luc ULg; Garbacz, Andrzej; Bissonnette, Benoît

Scientific conference (2017, February 20)

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See detailSurface characterization methods for quality control of repair
Garbacz, Andrzej; Bissonnette, Benoît; Courard, Luc ULg

Scientific conference (2017, February 20)

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See detailOn the evaluation of interface quality in concrete repair system by means of impact-echo signal analysis
Garbacz, Andrzej; Piotrowski, Tomacz; Courard, Luc ULg et al

in Construction and Building Materials (2017), 134

According to Concrete Repair Manual as well as ACI 562-16 and European EN 1504-10 standards, a bond strength as a measure of adhesion is one the main feature of repair system necessary to be assessed. The ... [more ▼]

According to Concrete Repair Manual as well as ACI 562-16 and European EN 1504-10 standards, a bond strength as a measure of adhesion is one the main feature of repair system necessary to be assessed. The most common laboratory and engineering method for bond strength evaluation is pull-off test. This is however a semi-destructive method that needs a repair in a place of measurement. Recently, the great interest in nondestructive techniques (NDT) development is noted. Impact-Echo (IE) is considered as one of the most promising methods for this purpose. In this paper, the study on the usability the IE test based on frequency spectrum analysis for bond strength evaluation is analyzed. Both Finite Element Method (FEM) simulation and experimental tests were performed in order to obtain potential relations between IE frequency spectrum and parameters characterizing concrete substrate quality that may affect the final bond strength and the real value of pull-off bond strength measured on samples as well. It was concluded that the IE method can be a useful tool for interface quality and bond strength evaluations in concrete repair system. However, more complex signal analysis, e.g. wavelet analysis, should be considered in the future. [less ▲]

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See detailWhy and how to repair concrete? Compatibility assessment
Courard, Luc ULg

Scientific conference (2016, December 06)

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See detailEvaluation du cursus  Sciences industrielles et de l’ingénieur industriel
Courard, Luc ULg

Conference given outside the academic context (2016)

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See detailMEASUREMENT OF MOISTURE DIFFUSIVITY BY INVESTIGATION OF SORPTION ISOTHERM AND MODELING MOISTURE TRANSFER OF MORTAR SUBMITED TO CONVECTIVE DRYING
Kahlerras, Loubna ULg; BELHAMRI, Azeddine; Fraikin, Laurent ULg et al

in Proceedings of The 20th International Drying Symposium (IDS 2016) (2016, August 08)

This work reports the results of experimental study concerning convective drying of cement mortar and the influence of water-to cement ratios (W/C) used for the preparation of mortar, on moisture changes ... [more ▼]

This work reports the results of experimental study concerning convective drying of cement mortar and the influence of water-to cement ratios (W/C) used for the preparation of mortar, on moisture changes. The first experimental campaign was a convective dryer; in the purpose to obtain the drying curves of mortar and the influence of water to cement ratios (W/C) on drying kinetics. A second experimental campaign aims to characterize from textural and hydric point of view, the materials, by mean of DVS (dynamic vapor sorption) In order to obtain sorption cycles and identify the moisture diffusivity coefficient of mortar. The pore size distribution is obtained from sorption cycles and completed by MIP. The contribution of each components of the microstructure to the diffusion is studied. Finally X-ray microtomography is used to measuring the moisture content in the internal structure of mortars during drying. [less ▲]

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See detailRéparation des bétons: principes, matériaux et techniques
Courard, Luc ULg

Scientific conference (2016, April 26)

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See detailEpuisement des ressources et construction durable
Courard, Luc ULg

Scientific conference (2016, April 15)

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See detailLa paille parois performantes - Vademecum 2
de Herde, André; Evrard, Arnaud; Rouche, Sylvie et al

Book published by UCL (2016)

En novembre 2011, un consortium rassemblant l’Université catholique de Louvain (Architecture et Climat), l’Université de Liège (GeMMe et UMC), l’Institut de Conseil et d’Études en Développement Durable ... [more ▼]

En novembre 2011, un consortium rassemblant l’Université catholique de Louvain (Architecture et Climat), l’Université de Liège (GeMMe et UMC), l’Institut de Conseil et d’Études en Développement Durable (ICEDD) et la jeune entreprise Paille-Tech est formé autour du projet de recherche « aPROpaille » » financé par la DGO4 (Direction générale opérationnelle de l’Aménagement du territoire, du Logement, du Patrimoine et de l’Énergie) dans le cadre du programme ERable, organisé par le Service Public de Wallonie (DGO4 et DGO6, Direction Générale Opérationnelle de l’Économie, de l’Emploi et de la Recherche). Ce projet très complet a permis de déterminer les caractéristiques et performances des matériaux « terre » et « paille », de réaliser des simulations de comportement hygrothermique des parois en paille, de les comparer à des monitorings de bâtiments existants en paille, de réaliser une analyse de cycle de vie (ACV) de ce type de paroi… Outre la réalisation d’une plateforme Internet (www.apropaille.be) sur la filière belge, les principaux résultats de cette recherche ont été rassemblés fin 2015 dans trois vadémécums à destination d’un public large et varié. Ces vadémécums, dont le présent document en est la deuxième partie, ont pour but d’offrir à tout un chacun une information rigoureuse, claire et compréhensible, des avancées récentes de ce domaine pour favoriser le développement de la filière de la paille utilisée comme matériau isolant dans la construction. Afin de permettre aux acteurs du monde de la construction de s’approprier les connaissances relatives à ce matériau, ce vadémécum s’intéressera aux parois que les ballots de paille permettent de réaliser et à leurs performances. C’est le vadémécum le plus technique. Il commence par l’analyse microscopique des brins de paille pour ensuite décrire l’ensemble de propriétés hygrothermiques des ballots et des enduits en terre qui leur sont souvent associés. Une attention particulière est donnée à l’analyse de la conductivité thermique des ballots de paille. Un troisième chapitre analyse le comportement hygrothermique dynamique de différentes parois en paille et identifier les points clefs de leur performances en terme d’isolation, d’inertie thermique, de régulation de l’humidité et de leur validité à longs termes. Le quatrième chapitre aborde ces thématiques, mais du point de vue du confort des occupants, de l’évolution de l’ambiance intérieure et des consommations d’énergie. Le cinquième chapitre détaille l’analyse du résultat des trois monitorings effectués dans le cadre de la recherche. Le sixième chapitre présente un ensemble de noeuds constructifs et donne la valeur à utiliser pour le calcul des ponts thermiques. Le septième chapitre présente l’analyse du cycle de vie réalisée dans le cadre de la recherche en identifiant l’influence de différents scénarios. Le dernier chapitre fait une brève analyse économique de différents systèmes constructifs. [less ▲]

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See detailLa paille matière première - Vadémécum 1
de herde, André; Evrard, Arnaud; Rouche, Sylvie et al

Book published by UCL (2016)

En novembre 2011, un consortium rassemblant l’Université catholique de Louvain (Architecture et Climat), l’Université de Liège (GeMMe et UMC), l’Institut de Conseil et d’Études en Développement Durable ... [more ▼]

En novembre 2011, un consortium rassemblant l’Université catholique de Louvain (Architecture et Climat), l’Université de Liège (GeMMe et UMC), l’Institut de Conseil et d’Études en Développement Durable (ICEDD) et la jeune entreprise Paille-Tech est formé autour du projet de recherche « aPROpaille » » financé par la DGO4 (Direction générale opérationnelle de l’Aménagement du territoire, du Logement, du Patrimoine et de l’Énergie) dans le cadre du programme ERable, organisé par le Service Public de Wallonie (DGO4 et DGO6, Direction Générale Opérationnelle de l’Économie, de l’Emploi et de la Recherche). Ce projet très complet a permis de déterminer les caractéristiques et performances des matériaux « terre » et « paille », de réaliser des simulations de comportement hygrothermique des parois en paille, de les comparer à des monitorings de bâtiments existants en paille, de réaliser une analyse de cycle de vie (ACV) de ce type de paroi… Outre la réalisation d’une plateforme Internet (www.apropaille.be) sur la filière belge, les principaux résultats de cette recherche ont été rassemblés fin 2015 dans trois vadémécums à destination d’un large et varié. Ces vadémécums, dont le présent document en est la première partie, ont pour but d’offrir à tout un chacun une information rigoureuse, claire et compréhensible, des avancées récentes de ce domaine pour favoriser le développement de la filière de la paille utilisée comme matériau isolant dans la construction. Afin de permettre aux acteurs du monde de la construction de s’approprier les connaissances relatives à ce matériau, ce vadémécum s’intéressera au ballot de paille en tant que matière première. D’où vient le ballot de paille ? Comment est-il produit ? Quelles sont les dimensions disponibles ? Comment identifier la céréale à la base du ballot de paille ? Comment obtenir un ballot de qualité pour la construction ? La paille est-elle une ressource inépuisable ? ... A la lecture de ces quelques pages, le lecteur sera invité à découvrir le ballot de paille en tant que produit agricole avant qu’il ne devienne un matériau de construction. [less ▲]

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See detailDevelopment and use of foamed recycled fibers to control shrinkage cracking of cementitious mortars
Coppola, Bartolomeo ULg; Di Maio, Luciano; Courard, Luc ULg et al

in Proceedings of the 4rd Workshop "The New Boundaries of Structural Concrete" (2016)

In this study a new class of engineered fibers were produced using end of waste materials obtained from post-consumer plastics. Taking into account the rising issue of plastic waste disposal and the ... [more ▼]

In this study a new class of engineered fibers were produced using end of waste materials obtained from post-consumer plastics. Taking into account the rising issue of plastic waste disposal and the importance of fiber/matrix adhesion for composites materials, recycled plastic fibers with improved adhesion were developed. In particular, foamed fibers presenting a rough surface and a porous morphology were obtained by a foam extrusion process using a chemical blowing agent. Fiber reinforced mortars (FRMs) were produced containing foamed fibers at three volume fractions (0.50, 1 and 2 %) and two lengths (15 and 30 mm). FRM plastic shrinkage cracking resistance was investigated: the better adhesion of foamed fibers influenced cracks propagation, reducing crack area and delaying crack openings during shrinkage. Moreover, shorter fibers are better efficient in controlling cracks length while longer fibers are able to reduce cracks width and number. [less ▲]

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See detailDetermining the reactivity of concrete aggregates for Nuclear Power Plant concrete structures
Jackiewicz-Rek, Wioletta; Piotrowski, Tomasz; Courard, Luc ULg et al

in Budowa Elektowni Jadrowych (2016), 529(9), 99-102

The authors describe the additional requirements to ensure durability of concrete related to probability of corrosion due to alkali-silica reactivity of aggregates based on French Rules for Design and ... [more ▼]

The authors describe the additional requirements to ensure durability of concrete related to probability of corrosion due to alkali-silica reactivity of aggregates based on French Rules for Design and Construction of PWR nuclear civil works RCC-CW. Since these requirements are based both on European standards and the French experience they are not fully compatible with the conditions and requirements in other countries, including Poland. In the paper the RILEM methodology and assessment according to American ASTM standards are presented as well. The article is an introduction to the discussion on adapting to Polish conditions the guidelines for the reactivity assessment of aggregate for concrete resulting from RCC-CW. [less ▲]

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See detailSpecial requirements for freeze/thaw resistance of concrete in PWR nuclear civil works
Piotrowski, Tomasz; Jackiewicz-Rek; Prochon, Piotr et al

in Budowa Elektrowni Jadrowych (2016), 529(9), 94-97

The authors describe the additional requirements to ensure freeze-thaw resistance of concrete resulting from the French Rules for Design and Construction of PWR nuclear civil works RCC-CW. Since these ... [more ▼]

The authors describe the additional requirements to ensure freeze-thaw resistance of concrete resulting from the French Rules for Design and Construction of PWR nuclear civil works RCC-CW. Since these requirements are based both on European stan dards and the French experience they are not fully compatible with the conditions and requirements in other countries, including Poland. The article seeks therefore to be an in trodu tion to the di - scussion on adapting the guidelines for the freeze-thaw resistance of concrete from RCC -CW to Po lish conditions. [less ▲]

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See detailInvestigation on the use of foamed plastic waste as natural aggregates replacement in lightweight mortar
Coppola, Bartolomeo ULg; Courard, Luc ULg; Michel, Frédéric et al

in Composites : Part B, Engineering (2016), 99

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See detailCiments ternaires à haute teneur en calcaire
Pierre, Christian; VanHamme, Géraldine; Lauch, Kim-Séang et al

Report (2016)

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See detailAmélioration des performances des recyclés en domaine routier par optimisation des unités de traitement
Van der Wielen, Audrey; Grégoire, Colette; Janssens, Benoît et al

Report (2016)

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See detailWorking Group 4 - Performances of Limestone Modified Portland Cement and Concrete
Courard, Luc ULg; Herfort, Duncan; Villagran, Yuri

in de Belie, Nele (Ed.) Supplementary Cementitious Materials (2016)

Fine limestone has been added to Portland cement for decades. This is normally achieved by “intergrinding” it with Portland cement clinker in the cement mill. Under normal operating conditions this will ... [more ▼]

Fine limestone has been added to Portland cement for decades. This is normally achieved by “intergrinding” it with Portland cement clinker in the cement mill. Under normal operating conditions this will result in a surface area of the limestone fraction of between 800 and 1100 m2/kg (depending on the grindability of the limestone) for a surface area of the clinker fraction of in the region of 400 m2/kg. Less often the limestone is ground separately and blended with Portland cement. Separate addition of limestone to concrete as a clinker replacement is not widely practiced in conventional concrete, but is used as filler for modifying the rheology of self-compacting concrete. In the early literature limestone was generally regarded as “inert filler”. For this reason it has e.g. become the main constituent in most masonry cements where high levels of replacement of the Portland cement are needed to reproduce the properties of traditional lime mortars. However, for its application in concrete, which is the primary focus of this report, the limestone’s contribution to the hydration reactions can be significant when it is co-ground with the clinker, albeit in relatively small amounts. So much so that it can arguably be classified as an SCM alongside GBFS and fly ash. The first significant use of limestone in general purpose Portland cement took place during WWII when it was used in several European countries to cut costs and increase output (Lea, 1970). Its widespread use today can be traced back to the 1973 oil crisis, with France, which had low production of fly ash and blast furnace slag, leading the way. The Portland limestone cements in the European cement standard EN 197-1 (2001), were adopted more or less un-changed from the French standard NF P 15-301 (1981). A systematic review of all standards and specifications for limestone and Portland limestone cements is beyond the scope of this report. [less ▲]

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