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Home > Science, Technology & Agriculture > Civil engineering, surveying and building > Building construction and materials > Comment déterminer les paramètres de pompage des bétons fluides?: (Omn.Univ.Europ.)
Comment déterminer les paramètres de pompage des bétons fluides?: (Omn.Univ.Europ.)

Comment déterminer les paramètres de pompage des bétons fluides?: (Omn.Univ.Europ.)


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About the Book

La capacité à pomper un béton dépend des frottements à l'interface béton-paroi des tuyaux de pompage. Ces frottements sont liés directement à la composition de la couche limite formée au contact de la paroi qui dépend des paramètres de composition du béton. Afin de mettre en évidence cette relation, un appareil appelé "tribomètre" à béton a été mis au point et validé dans cette étude. Cet appareil a permis de mesurer les frottements et déterminer les paramètres de pompage, à savoir, constante visqueuse et seuil d'interface des bétons choisis. Les résultats obtenus ont montré le rôle primordial joué par les fines de dimensions inférieures à 0,25 mm sur ces frottements. Les études portant sur l'influence de différents paramètres de composition des bétons ont permis de dégager suffisamment de résultats pour proposer et valider un modèle de calcul de la constante visqueuse, paramètre essentiel qui conditionne les frottements à l'interface. La validation s'applique à tous les bétons courants sauf à ceux qui contiennent trop de gros granulats et à ceux qui incorporent de la fumée de silice. La précision de ce modèle est de l'ordre de ±16%.


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Product Details
  • ISBN-13: 9786131552656
  • Publisher: Omniscriptum
  • Publisher Imprint: Omniscriptum
  • Height: 229 mm
  • No of Pages: 192
  • Returnable: N
  • Spine Width: 11 mm
  • Width: 152 mm
  • ISBN-10: 6131552657
  • Publisher Date: 28 Feb 2018
  • Binding: Paperback
  • Language: French
  • Returnable: N
  • Series Title: Omn.Univ.Europ.
  • Weight: 290 gr


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