Contribution to the study of the concrete carried in temperature : Evolution of the transfer properties / Study of the spalling
type: Dataset
contact point: Organization
  fn: CCSD
keyword: polypropylene-fiber
keyword: fibre-de-polypropylene
keyword: permeabilite-a-lair
keyword: rupture
keyword: crack
keyword: instabilite-thermique
keyword: silica-fume
keyword: thermal-instability
keyword: theses
keyword: mechanical-behavior
keyword: beton-haute-performance
keyword: spiotherengineering-sciences-physicsother
keyword: high-performance-concrete
keyword: infoeu-reposemanticsdoctoralthesis
keyword: haute-temperature
keyword: air-permeability
keyword: high-temperature
keyword: sorption
keyword: comportement-mecanique
keyword: fumee-de-silice
landing page: https://theses.hal.science/tel-00701556
description: The study of the behaviour of concrete at high temperatures is of great importance to determine the stability and strength of concrete structures in fire conditions. Spectacular fires, these last years, showed that the concrete could be very strongly solicited. Thus it appears that to ensure a very good behaviour of the concrete at temperature it is saved people and reduced the expenses of immobilisation and repair of the damaged structures. The aims of the present work, by the experimental study, are to provide a better comprehension of the involved phenomena during the exposure to the high temperatures of the high performance concretes (HPC). It focuses, in particular, on the fluids transfers (permeability) and the study of the thermal instability (spalling) of high performance concrete. The thesis work was conducted on high-performance concrete (80 MPa) with 5% silica fume (low permeability material to improve durability), and different amount of polypropylene fibres. The use of polypropylene fibres (PP) is regarded as an effective technical solution to improve the behaviour of the HPC at fire conditions, in particular thanks to the physical phenomena appearing at the temperatures lower than 200°C. Our work is concerned, initially, on the characterization of the evolution of physical properties (porosity, mass loss), thermal properties (conductivity and diffusivity) and mechanical properties (compressive strength and tensile) and the sorption isotherms. The second part concerns the study of the evolution of the permeability, as a main property characterising the hydrous transfers inside the concrete exposed to temperature. An experimental study is conducted concerning the evolution of the permeability of concrete as a function of temperature (up to 200 ° C). The studied parameters are: the type of concrete (with and without fibres), two types and geometry of fibres, the nature of the fluid (air and vapour) and the measurement methods (residual and under temperatu…
identifier: NNT: 2011ISAL0155
issued: 2026-05-17T00:45:43.648166
language: fr
modified: 2026-05-17T00:45:43.648172

test_moissonnage_selune
type: Agent

Contribution to the study of the concrete carried in temperature : Evolution of the transfer properties / Study of the spalling
type: Distribution
access URL: https://theses.hal.science/tel-00701556
format: HTML
issued: 2026-05-17T00:45:43.802174
modified: 2026-05-17T00:45:43.578406