Zobrazeno 1 - 10
of 169
pro vyhledávání: '"J. P. Ollivier"'
Publikováno v:
EMC - Cardiologie. 3:1-6
Publikováno v:
Cement and Concrete Research. 37:1145-1151
The objective of this paper is to propose a new method for testing molecular diffusion in saturated cement materials. A saturated specimen of porous materials was placed between two compartments; the upstream compartment contained tritiated water (HT
Publikováno v:
Materials and Structures. 40:909-921
Knowledge of alkali concentration in concrete pore solution is key for long-term eval- uation of alkali-silica reaction (ASR) expansion. This study aimed at providing experimental data on the alkalinity evolution in concrete tested for ASR in order t
Publikováno v:
Cement and Concrete Research. 32:1331-1340
The objective of this work is to simulate the gas flow across a concrete wall of a nuclear power plant internal enclosure. In the laboratory, permeability measurements are generally made on cylindrical samples (15 cm diameter×5 cm height: ∅ 15×5
Publikováno v:
Materials and Structures. 35:22-27
To study the permeability of cementitious materials; a procedure of drying out moisture before the actual measurement of this property, normally called preconditioning, is an unavoidable necessity. In this study, the preconditioning procedure develop
Publikováno v:
Materials and Structures. 33:171-180
Le sable-laitier est und materiau composite constitue essentiellement d’un ou de plusierus sables, d’un laitier vitrifie et d’activant. Il est principalement utilise dans la confection des assies de chaussees. On parle de sable-laitier lorsque
Publikováno v:
Cement and Concrete Research. 30:217-226
This paper presents a new method for measuring the chloride diffusion coefficient in concrete from steady state migration tests. First, we review concepts of the steady-state diffusion and migration tests. We emphasize that these tests have limitatio
Publikováno v:
Magazine of Concrete Research. 52:1-6
The permeability to gases of cementitious materials is one of the major contenders for becoming a standard parameter for the quantification of the durability of these materials. This coefficient is thought to be closely related to the compressive str
Publikováno v:
Materials and Structures. 32:243-251
Cet article decrit les aspects electrochimiques de l'essai accelere de permeabilite aux chlorures; il souligne le role de la tension appliquee a la cellule et celui de la resistance electrique du beton. Ces deux parametres determinent les potentiels
Publikováno v:
Materials and Structures. 32:3-8
Permeability, along with diffusion and absorption, is used to quantify durability characteristics of a concrete. The measured value of gas permeability of concrete depends strongly on its degree of saturation. Moreover, when the size of pores is of t