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Année universitaire : 2021 / 2022
Université
Abdelmalek
Essaâdi
Faculté des
sciences et
techniques de
Tanger
Master Génie Civil
Mini Projet
Béton à Haute
Performances
BHP
Présenté par:
Akdi Ibtissam
Baati Yousra
Charradi Nada
Encadré par:
Mr. HAFIDI ALAOUI
ADIL
I. Objectifs
II. Introduction
III. Béton à Haute Performances
IV. Propriétés physiques et
mécaniques
V. Durabilité
VI. Principaux domaines d’application
VII. Conclusion
Plan:
1
2
I. Objectifs:
Obtenir une meilleure
résistance mécanique.
Améliorer la capacité
de résister aux divers
sollicitations pour une
bonne durabilité.
II. Introduction
III. Béton à Haute
Performances
III.1 Définition
III.2 Les constituants du BHP
Béton
Granulats
Eau
Ciment
Adjuvants
7
Fumée de
Silice
Les cendres
volantes
III.3 Formulation
1 2 3 4 5
Dosage en
granulats
Teneur en
air
Le rapport
Eau/Liant
Dosage en
Eau
Dosage en
Super
plastifiant
III.4 Les essais sur le BHP
Essai d’affaissement
Essai Étalement à la table à chocs
Essai de compression
IV. Propriétés
physiques
et mécaniques
IV.1 Propriétés physiques
La masse volumique
• La masse volumique apparente pour le BHP = 2400 à 2500
• La masse volumique apparente pour le BO = 2350 à 2400
La résistance à la compression
IV.2 Propriétés mécaniques
La résistance à la traction
Module d’élasticité
Le retrait
Le fluage
Le module d’élasticité des BHP est supérieur à celui des bétons
traditionnels.
Le retrait est complètement identique à celui d’un béton traditionnel.
Le fluage d’un BHP est très inférieur à celui d’un béton usuel
V. Durabilité
Cycle d’une faible durabilité
Corrosion des
armatures
1.Dégradation
du béton
1.Une mauvaise
distribution granulaire
ou un grand rapport
E/C.
La porosité
Pénétration
d’eau et des
agents
agressifs
Matériau
V.1 Durabilité du BHP
Chlorure
Attaque
sulfatique
Réaction alcali
Gel/Dégel
Les phénomènes qui nuisent à la durabilité
du béton :
Carbonatation
Imperméabilité
Bonne compacité Faible porosité
Faible
perméabilité
Haute
résistance
 Utilisation d'effort pour comprendre le locuteur.
Forte
compacité
Faible
pénétration d’eau
Gel/Dégel
Carbonatation
BHP
Microstructure
dense
Faible porosité
Faible
pénétration du
CO2
Chlorure:
La résistance des BHP à la
migration du chlorure est
supérieure grâce à sa
microstructure plus dense
Une réponse
favorable aux
exigences de
durabilité.
BHP
VI. Principaux
domaines
d’application
Pont de Normandie à la France
Aéroport Rabat-Salé
VII. Conclusion
Merci pour votre
attention

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BHP MDC.pptx