References of "Darimont, Anne"
     in
Bookmark and Share    
Full Text
See detailEtude de la consolidation du béton frais sur base de la porosité à l'état durci
Willem; Darimont, Anne ULg; Degeimbre, Robert et al

in Courard, Luc (Ed.) Compte-rendu des Journées Scinetifiques du (RF)2B (2004)

La consolidation est le terme qui désigne la sédimentation des grains dans les suspensions très denses comme le béton. Le resserrement du squelette granulaire du béton frais entraîne une exsudation d’eau ... [more ▼]

La consolidation est le terme qui désigne la sédimentation des grains dans les suspensions très denses comme le béton. Le resserrement du squelette granulaire du béton frais entraîne une exsudation d’eau qui s’accumule à la surface de l’échantillon, formant la couche d’eau de ressuage. Cette migration de l’eau est à l’origine de nombreux défauts dans le béton qui mettent en péril sa durabilité. Le but de ce travail est de mettre en évidence l’existence d’une relation entre le ressuage et la porosité à l’état durci du béton. [less ▲]

Detailed reference viewed: 39 (5 ULg)
Full Text
Peer Reviewed
See detailAlkali-silica reactivity with pessimum content on Devonian aggregates from the Belgian Arden massive
Merriaux, K.; Lecomte, A.; Degeimbre, Robert ULg et al

in Magazine of Concrete Research (2003), 55(5), 429-437

Tests of alkali-silica reactivity were conducted on Devonian aggregates from the Belgian Arden massive. These are 'Bastogne sandstones' of the metamorphosed Mirwart layer consisting of the silica rich ... [more ▼]

Tests of alkali-silica reactivity were conducted on Devonian aggregates from the Belgian Arden massive. These are 'Bastogne sandstones' of the metamorphosed Mirwart layer consisting of the silica rich psammite rock family Petrography analysis reveals the presence of wavy extinction quartz and small size silica elements known to be potentially reactive to the alkalis in the base medium of concretes. Two accelerated tests were conducted according to the RILEM TC-106 and the French Standard NF P 18-590; they confirmed the strong reactive character of the sands,from these materials. The reaction is strongest in the presence of certain percentage of non-reactive sand. For this reason, the aggregates arc, described as being potentially reactive with pessimum content'. Their use in structures concretes must therefore be considered with the particular precaution of using cements that are low in free alkalis, and if necessary, with the addition of slag, fly ash or silica fume, all of which are known to reduce alkali silica reactivity. Verification of the dimensional stability of tat-get formulae must also be conducted on concrete test pieces. [less ▲]

Detailed reference viewed: 36 (3 ULg)
Full Text
Peer Reviewed
See detailDurability of mortars modified with metakaolin
Courard, Luc ULg; Darimont, Anne ULg; Schouterden, M. et al

in Cement & Concrete Research (2003), 33(9), 1473-1479

Results of an investigation to determine the effects of metakaolin additions on transport properties of mortars are reported. Comparisons are made to ordinary Portland cement (OPC) to determine the ... [more ▼]

Results of an investigation to determine the effects of metakaolin additions on transport properties of mortars are reported. Comparisons are made to ordinary Portland cement (OPC) to determine the influence of addition and replacement percentage. Cement is replaced on a mass basis of 5-20% for metakaolin. A mixture with natural kaolin is also studied. The transport properties and chemical behaviors are analyzed by means of chloride diffusion tests and sulfate immersion. Obserdvations after more than 100 days are used to prescribe mixtures that reduce the rate of chloride diffusion and sulfate degradation. For metakaolin, the optimum seems to be between 10% and 15% with regard to inhibition effect on chloride diffusion and sulfate attack. (C) 2003 Elsevier Ltd. All rights reserved. [less ▲]

Detailed reference viewed: 91 (10 ULg)
See detailEffects of environment on Repair Materials: Results of a Five-Year Research Project
Courard, Luc ULg; Darimont, Anne ULg; Degeimbre, Robert ULg et al

in Sixth Canmet/ACI International Conference on Durability of Concrete (2003)

Detailed reference viewed: 21 (8 ULg)
Full Text
Peer Reviewed
See detailRecognition of Quality and Conformity of Concrete Repair Products and Protection Systems/ Belgian and European experiences
Courard, Luc ULg; Darimont, Anne ULg; Degeimbre, Robert ULg et al

in Vaysburd, Alex (Ed.) Bridging the Concrete Repair Industry into a New Era of Sustainable Development (2003)

Recognition of product quality and conformity supposes the existence of two elements: a users’ requirements document and a certification system for product conformity with this document. The document is ... [more ▼]

Recognition of product quality and conformity supposes the existence of two elements: a users’ requirements document and a certification system for product conformity with this document. The document is generally drawn up by a group representing all the interested parties (public and private users, producers, certification or monitoring bodies, testing laboratories, experts …). Depending on circumstances, the document appears as the norm approved in a certain country or as a normative document (approval guide, technical prescriptions,…) recognised by the various interested parties. The certification body is a public or private body which has the competence, independence and impartiality to certify that a duly identified product conforms to a normative document. The certification body works within a certification system that also includes inspection bodies and testing laboratories. In certain cases, the certification body is approved by a competent national authority. In Belgium, the Ministry of Communication and Infrastructures approves certification or inspection bodies and also testing laboratories for building activities. [less ▲]

Detailed reference viewed: 11 (0 ULg)
Full Text
Peer Reviewed
See detailAdhesion of Self-Compacting Concrete on Old Concrete Structures
Courard, Luc ULg; Darimont, Anne ULg; Degeimbre, Robert ULg et al

in Seidler, Peter (Ed.) Industrial Floors 03 (2003)

The repair of concrete deck slabs or balcony needs a special composition of concrete, and self-Compacting Concrete (SCC) is advantageously used for such repair operation. The rheology of the material is ... [more ▼]

The repair of concrete deck slabs or balcony needs a special composition of concrete, and self-Compacting Concrete (SCC) is advantageously used for such repair operation. The rheology of the material is of prime importance and needs to be adapted to ensure the penetration of SCC beneath the concrete plate structure as well as the adhesion to the old concrete substrate. Several materials have been used and characterised by means of a physical, chemical and mechanical test program. A test procedure is proposed to assess the efficiency and quality of the repair technique and material. Analysis of the interface between concrete substrate and SCC is given on the basis of a pull-off test and microscopical observations. [less ▲]

Detailed reference viewed: 46 (0 ULg)
Full Text
Peer Reviewed
See detailHygro-thermal application conditions and adhesion
Courard, Luc ULg; Darimont, Anne ULg; Degeimbre, Robert ULg et al

in Seidler, Peter (Ed.) Industrial Floors 03 (2003)

Coatings are designed to protect concrete against environmental aggression. Water is one of the aggressive parameters able to deteriorate the concrete structure. The objectives of this paper are to ... [more ▼]

Coatings are designed to protect concrete against environmental aggression. Water is one of the aggressive parameters able to deteriorate the concrete structure. The objectives of this paper are to present the effects of water (i) during application of coating on the concrete substrate and (ii) pull-off test. Semi-permanent moisty state produced by absorption from the uncoated face, total immersion or diffusion of water from the back face of the substrate are analysed. Water vapour diffusion and influence of hydrophobic treatment are also investigated. A classification based on increasing influence of the tests and application conditions on adhesion is proposed and clearly points out the negative effect of capillary action from the uncoated face. [less ▲]

Detailed reference viewed: 12 (0 ULg)
Full Text
Peer Reviewed
See detailUse of municipal solid waste incineration residues in the precasting of concrete paving
Courard, Luc ULg; Degeimbre, Robert ULg; Darimont, Anne ULg et al

in Materials and Structures (2002), 35(250), 365-372

Valorisation of Municipal Solid Waste Incineration Residues - excluding ashes - is a positive advance in sustainable development: saving natural resources, decrease in wastes volume stored, reduction of ... [more ▼]

Valorisation of Municipal Solid Waste Incineration Residues - excluding ashes - is a positive advance in sustainable development: saving natural resources, decrease in wastes volume stored, reduction of energy consumption. If good conditions of incineration can be ensured and post-combustion treatments are realised, solid residues are in the form of granular materials usable in construction and civil engineering. Uses in road structures are classical; application for the precasting of paving is quite new and interesting due to the quantity of recycled materials. Mechanical and physical performances of municipal solid waste incineration residues let us to replace a part of the granular skeleton and to obtain similar behaviour as with reference granular composition: splitting resistance, water absorption and resistance to abrasion are optimised. Leaching behaviour is also verified in order to avoid detrimental effect on the environment; it is shown that post-combustion treatments and compacting energy combined with vibration are essential for a good quality product fabrication. [less ▲]

Detailed reference viewed: 51 (1 ULg)
Full Text
Peer Reviewed
See detailRepairing Concrete with Self Compacting Concrete: Testing Methodology Assessment
Courard, Luc ULg; Darimont, Anne ULg; Degeimbre, Robert ULg et al

in Shah, S. P. (Ed.) Self-Consolidating Concrete (2002)

The repair of concrete deck slabs or balcony needs a special composition of concrete and self-compacting concrete (SCS) is advantageously used for such repair operation in comparison with patch repair or ... [more ▼]

The repair of concrete deck slabs or balcony needs a special composition of concrete and self-compacting concrete (SCS) is advantageously used for such repair operation in comparison with patch repair or gunite. Two compositions of concrete (classical and SCC concretes) and two repair mortars are tested according to a new testing procedure. The penetration of SCC beneath the concrete plate structure but also the adhesion to the old concrete substrate are analysed. The rheology of the material is measured by means of usual tests and rheometer. The different materials have been characterised through physical, chemical and mechanical test program. Two types of applications (vertical and horizontal) are presented and commented. Analysis of the interface between concrete substrate and SCC is given on the base of pull-off test and microscopical observations. [less ▲]

Detailed reference viewed: 228 (1 ULg)
Peer Reviewed
See detailDégradation de dalles de tablier de ponts en Belgique. Etude d'une pathologie complexe
Demars, Philippe; Gilles, Pierre; Darimont, Anne ULg

in Bulletin des Laboratoires des Ponts et Chaussées (2001), 232

Detailed reference viewed: 55 (2 ULg)
Full Text
Peer Reviewed
See detailEffects of sunshine/rain cycles on the behaviour of repairing systems
Courard, Luc ULg; Degeimbre, Robert ULg; Darimont, Anne ULg et al

in Ohama, Y.; Puterman, M. (Eds.) Adhesion between polymers and concrete (1999)

Detailed reference viewed: 11 (2 ULg)
Full Text
Peer Reviewed
See detailAppetency and adhesion: analysis of the kinetcs of contact between concrete and repairing mortars
Courard, Luc ULg; Darimont, Anne ULg

in Katz, Amon; Bentur, Arnon; Alexander, Mark (Eds.) et al Interfacial Zone in Concrete (1998)

The definition of the adhesion itself presents a duality : on the one hand, adhesion is understood to be a process through which two bodies are brought together and attached (bonded) to each other, in ... [more ▼]

The definition of the adhesion itself presents a duality : on the one hand, adhesion is understood to be a process through which two bodies are brought together and attached (bonded) to each other, in such a manner that external force or thermal motion is required to break the bond. The term "adhesion" (or "sticking") is usually applied in this sense in colloid research on coagulation phenomena. On the other hand, we may examine the process of breaking a bond between bodies that are already in contact; and here, as a quantitative measure of the intensity of adhesion, we can take the force or energy required to separate the two bodies. We studied this problem in the context of repairing mortars laid down on a concrete support; we focused our research on the behaviour of a cementitious slurry applied on two types of concrete support, characterised by their surface preparation (sandblasted and polished surface). We measured and observed the penetration of this slurry into the concrete support. [less ▲]

Detailed reference viewed: 27 (4 ULg)
Full Text
Peer Reviewed
See detailInfluence of the composition of the repairing mortars on adherence
Courard, Luc ULg; Wiertz, Jean; Darimont, Anne ULg et al

in Van Gemert, Dionys (Ed.) Proceedings of the VIIIth International Congress on Polymers in Concrete (1995)

Detailed reference viewed: 7 (1 ULg)
Full Text
Peer Reviewed
See detailInfluence of the operating conditions and humidity on adherence of repair mortars
Courard, Luc ULg; Wiertz, Jean; Darimont, Anne ULg et al

in Van Gemert, Dionys (Ed.) Proceedings of the VIIIth International Congress on Polymers in Concrete (1995)

Detailed reference viewed: 11 (1 ULg)
Peer Reviewed
See detailConcrete-Pathology-Secondary Precipitations
Darimont, Anne ULg

in Microscopy Research and Technique (1993), 25(2), 179-180

Detailed reference viewed: 26 (1 ULg)
Full Text
Peer Reviewed
See detailQuantitative analysis of the porous structure of a petroleum reservoir
Pirard, Eric ULg; Pierroux, Alain; Darimont, Anne ULg

in Microscopy Research and Technique (1993), 25(2), 173-174

Detailed reference viewed: 28 (9 ULg)
See detailPerformance des mortiers de ragréage en fonction du mode de préparation des bétons support
Wiertz, Jean; Darimont, Anne ULg

in colloque européen Lyon 8-9-10 septembre 1992 (1992, September)

Detailed reference viewed: 11 (0 ULg)
See detailPathologie du béton: précipitations secondaires
Darimont, Anne ULg

in Revue belge de Microscopie électronique (1992)

Detailed reference viewed: 23 (1 ULg)
Peer Reviewed
See detailImportance du volume d'un fluide périphérique à peine visible dans une cavité intracristalline
Darimont, Anne ULg

in Annales de la Société Géologique de Belgique (1989), 112(1), 157-158

Detailed reference viewed: 6 (0 ULg)
See detailMetals in aqueous solutions in: biosorption of heavy metals
Darimont, Anne ULg; Frenay, Jean ULg

in Metals in aqueous solutions in: biosorption of heavy metals (1989)

Detailed reference viewed: 12 (1 ULg)