NDLI: Recycled aggregate concrete as structural material

Content Provider	Springer Nature Link
Author	Etxeberria, M. Marí, A. R. Vázquez, E.
Copyright Year	2006
Abstract	The use of recycled aggregates in concrete opens a whole new range of possibilities in the reuse of materials in the building industry. The utilisation of recycled aggregates is a good solution to the problem of an excess of waste material, provided that the desired final product quality is reached. The studies on the use of recycled aggregates have been going on for 50 years. In fact, none of the results showed that recycled aggregates are unsuitable for structural use. However, some hypothetical problems related to durability aspects resulted in recycled aggregates being employed practically only as base filler for road construction. This paper focuses on the possibility of the use of recycled aggregate concrete as a structural material. For that purpose an experimental study of the shear behaviour and strength of beams made with recycled aggregate concrete was studied. Twelve beam specimens with the same compression strength, four concrete mixtures using different percentages of recycled coarse aggregates (0%, 25%, 50% and 100%) and three different transverse reinforcement arrangements were cast and tested up to failure. Analytical predictions of the experimental results were carried out using a numerical model based on the modified compression field theory and simplified models such as those proposed by Cladera & Mari, the Canadian standard CSA and the Eurocode-2. The results obtained indicate that a substitution of less than 25% of coarse aggregate, scarcely affects the shear capacity of RC beams, provided that all measures related to dosage and durability aspects have been adopted.
Starting Page	529
Ending Page	541
Page Count	13
File Format	PDF
ISSN	13595997
Journal	Materials and Structures
Volume Number	40
Issue Number	5
e-ISSN	18716873
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2006-07-13
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Recycled aggregates Recycled aggregate concrete Structural behaviour Shear strength 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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