Groupe de travail

Un groupe de travail est un regroupement d'un petit nombre (moins de 15) d'individus dont l'objet est la réalisation d'un travail commun. Un groupe de travail n’est ni une famille, ni une bande, ni un groupe d’amis, c’est un groupe de personnes qui ont des relations interpersonnelles de face à face. Il est caractérisé par la convergence des efforts, par l’exécution d’une tâche qui sera l’œuvre commune. Il existe de nombreux exemples de groupes de travail, tels que :

des cercles de qualité ;
des groupes interdisciplinaires de recherche scientifique. Types de groupe
Ce groupe peut être :
Groupe formel : :Le groupe formel, autrement connu comme groupe organisé, est constitué d’individus qui réalisent un but commun. Il est composé d’un cadre ou même un chef qui dirige, sous son autorité, des employés. Il possède une structure très rigide et doit adhérer aux lois et règlements de l’entreprise.
Groupe informel : :Le groupe informel est le résultat d'une action s

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Cours associés (9)

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Séances de cours associées (12)

Séances de cours associées

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Report of RILEM TC 267-TRM: Improvement and robustness study of lime mortar strength test for assessing reactivity of SCMs

Mathieu Antoni, Mohsen Ben Haha, Shashank Bishnoi, Yuvaraj Dhandapani, Pawel Tadeusz Durdzinski, Xuerun Li, Anuj Parashar, Karen Scrivener, Ruben Anton Snellings

RILEM TC 267-TRM is studying tests for the reactivity supplementary cementitious materials (SCMs). In the first phase, the lime reactivity (LR) test, which is standardised in Indian standard (IS)-1727, gave promising correlations with 90-days cement mortar strength. In Phase 2, working group 1 has looked at further optimisation and robustness study of the LR test. A parameter screening approach for improving the mix design to use fixed mass proportions targeting enhanced reproducibility and robustness was focused. The parameters studied include mixture properties such as the effects of lime (hydrated lime/calcium hydroxide-CH) to SCM ratio, water to binder (binder = CH + SCM) ratio (w/b), activators, curing temperature, and testing age as well as the impact of factors from different national standards (IS and European Committee for Standardisation-EN) such as mould size, shape & type of sand. The modified mixture recommended by the TC uses a fixed CH to SCM mass ratio of 1:1 and the addition of activators. Also, a higher curing temperature of 50 degrees C in comparison to the 27 degrees C specified in IS 1727, for the first 2 days is proposed to accelerate the early hydration especially for slowly reacting SCMs. It is also recommended that, the minimum purity and fineness of the CH need to be specified to obtain reproducible results.

SPRINGER2022

Chargement

Understanding the carbonation of concrete with supplementary cementitious materials: a critical review by RILEM TC 281-CCC

Barbara Lothenbach, Karen Scrivener

Blended cements, where Portland cement clinker is partially replaced by supplementary cementitious materials (SCMs), provide the most feasible route for reducing carbon dioxide emissions associated with concrete production. However, lowering the clinker content can lead to an increasing risk of neutralisation of the concrete pore solution and potential reinforcement corrosion due to carbonation. carbonation of concrete with SCMs differs from carbonation of concrete solely based on Portland cement (PC). This is a consequence of the differences in the hydrate phase assemblage and pore solution chemistry, as well as the pore structure and transport properties, when varying the binder composition, age and curing conditions of the concretes. The carbonation mechanism and kinetics also depend on the saturation degree of the concrete and CO(2)partial pressure which in turn depends on exposure conditions (e.g. relative humidity, volume, and duration of water in contact with the concrete surface and temperature conditions). This in turn influence the microstructural changes identified upon carbonation. This literature review, prepared by members of RILEM technical committee 281-CCC carbonation of concrete with supplementary cementitious materials, working groups 1 and 2, elucidates the effect of numerous SCM characteristics, exposure environments and curing conditions on the carbonation mechanism, kinetics and structural alterations in cementitious systems containing SCMs.

SPRINGER2020

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SystemC-Based Modeling of Embedded Heterogeneous Systems

Alain Vachoux

SystemC is emerging as a de-facto standard for digital system design. Since embedded systems include more and more heterogeneous components (e.g., analog/RF front-ends, processor cores, embedded software, digital hardware, sensors, actuators), the need for also supporting continuous-time models of computation in SystemC is growing. This paper reviews the main efforts to date for equipping SystemC with appropriate modeling guidelines or new classes and methods for supporting continuous-time and mixed continuous-time/discrete-event/discrete-time modeling and simulation. A particular emphasis is given on reporting on the ongoing effort in the OSCI (Open SystemC Initiative) AMS (Analog and Mixed-Signal) Working Group.

2008

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ENV-410: Science of climate change

The course equips students with a comprehensive scientific understanding of climate change covering a wide range of topics from physical principles, historical climate change, greenhouse gas emissions, the IPCC assessment to future scenarios and climate action.

AR-154: Environmental history and theories I

Le cours vise a familiariser les etudiants avec l'histoire de l'environnement et des paysages, et avec la maniere dont les preoccupations environnementales amenent a repenser aujourd'hui le sens et les principes de l'architecture et des disciplines de projet.

AR-401(o): Studio MA1 (elii)

Fiction is one of the laboratories that architecture uses for its tests. This should not come as a surprise, since architecture has always been a "science of fiction". The studio holds by elii [architecture office] will work in Madrid on housing, domesticity and fiction.

World Wide Web Consortium

Le World Wide Web Consortium, abrégé par le sigle W3C, est un organisme de standardisation à but non lucratif, fondé en chargé de promouvoir la compatibilité des technologies du World Wide Web tell

Extensible Markup Language

LExtensible Markup Language, généralement appelé XML, « langage de balisage extensible » en français, est un métalangage informatique de balisage générique qui est un sous-ensemble du Standard Gener

Organisme de normalisation

Un organisme de normalisation est un organisme dont les activités premières sont l'établissement puis le maintien de normes destinées à des utilisateurs extérieurs à cette organisation. Leurs activité