NDLI: Influence of composite materials confinement on alkali-aggregate mechanical behaviour

Content Provider	Springer Nature Link
Author	Mohamed, I. Ronel, S. Curtil, L.
Copyright Year	2006
Abstract	In a previous study [6], we have presented an original experimental procedure for results expansion alcali aggregate reaction. Our main goal is to identify the influence of the confinement by composite materials on alkali-aggregate expansion.In this paper, we are going to present a serie of compressive tests that were carried out in order to investigate the mechanical behaviour during alkali aggregate attack at different ageing periods. We also evaluate the influence of composite material confinement on the mechanical characteristics of these concretes. This will be demonstrated in this second part.The specimens used for expansion were loaded in compression until they fractured at four successive stages in the ageing process.Our results show a significant increase in the mechanical characteristics of the confined alkali reactive specimens in comparison with the non confined specimens: the confined specimens not only withstand compressive stresses four to five times as high as non-confined ones, but their stress/strain curves follow a ‘linear evolution’ whereas non-confined specimens seem to behave like powdery materials. Our experiments show that the increase in strength is much more important with this kind of alkali aggregate concrete confined by composite materials.
Starting Page	479
Ending Page	490
Page Count	12
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	39
Issue Number	4
e-ISSN	18716873
Language	English
Publisher	Springer Netherlands
Publisher Date	2006-06-08
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Building Materials Civil Engineering Operating Procedures, Materials Treatment Mechanical Engineering Theoretical and Applied Mechanics Structural Mechanics
Content Type	Text
Resource Type	Article
Subject	Building and Construction Mechanics of Materials Materials Science Civil and Structural Engineering

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