Influence de la position des armatures sur l'adhérence des bétons autoplaçants : interprétation par analyse d'image
Title: Influence de la position des armatures sur l'adhérence des bétons autoplaçants : interprétation par analyse d'image
Author(s): A. Daoud, M. Lorrain
Paper category : journal
Serial title: Materials and Structures
Abreviated Serial title: Mater. Struct.
Publisher: RILEM Publications SARL
Issue date: 2003-05-01
Publication year: 2003
Pages: 2317 - 237
Total Pages: -2079
Nb references: 12
Abstract: Investigations on bond between self-compacting concrete and reinforcement steel have been carried out by means of pull-out tests for different position of bar during casting.
Five positions were studied: horizontal (superior, inferior and median), vertical (loaded in casting direction or against casting direction).
Results show that bond strength was highest for bars cast vertically and loaded against the casting direction and the bond strength, cast in horizontal position, decreases when the depth of concrete beneath the bar increases.
The ratio between the bond resistance of bars cast vertically and horizontally was about 1.
An interpretation, using image analysis, was proposed.
In fact, we have observed a satisfying correlation between the bond strength and the difference between the percentage of coarse aggregate above and below the bar for different positions.
Online publication: 2003-03-27
Classification: Technical Reports
Publication type : full_text
Public price (Euros): 0.00
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