Bond behavior between steel reinforcement and recycled concrete

In this paper the bond behavior of recycled aggregate concrete was characterized by replacing different percentages of natural coarse aggregate with recycled coarse aggregate (20, 50 and 100 %). The results made it possible to establish the differences between the conventional concrete bond strength...

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Bibliographic Details
Published in:Materials and structures 2014, Vol.47 (1-2), p.323-334
Main Authors: Seara-Paz, Sindy, González-Fonteboa, Belén, Eiras-López, Javier, Herrador, Manuel F.
Format: Article
Language:English
Subjects:
Aggregates
Applied sciences
Bonding
Bonding strength
Building construction
Building Materials
Buildings. Public works
Civil Engineering
Compressive strength
Concretes
Concretes. Mortars. Grouts
Engineering
Exact sciences and technology
General (composition, classification, performance, standards, patents, etc.)
Machines
Manufacturing
Materials
Materials Science
Mathematical analysis
Original Article
Processes
Recovery materials
Recycled
Solid Mechanics
Stresses
Theoretical and Applied Mechanics
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Summary:In this paper the bond behavior of recycled aggregate concrete was characterized by replacing different percentages of natural coarse aggregate with recycled coarse aggregate (20, 50 and 100 %). The results made it possible to establish the differences between the conventional concrete bond strength and the recycled concrete bond strength depending on the replacement percentage. It was thus found that bond stress decreases with the increase of the percentage of recycled coarse aggregate used. In order to define the influence of recycled aggregate content on bond behavior, normalized bond strength was calculated taking into account the reduced compressive strength of the recycled concretes. Finally, using the experimental results, a modified expression for maximum bond stress (bond strength) prediction was developed, taking into account replacement percentage and compressive strength. The obtained results show that the equation proposed provides an experimental value to theoretical prediction ratio similar to that of conventional concrete.
ISSN:1359-5997
1871-6873
DOI:10.1617/s11527-013-0063-z