Bond behavior between steel reinforcement and recycled concrete

Seara-Paz, Sindy; González-Fonteboa, Belén; Eiras-López, Javier; Herrador, Manuel F.

doi:10.1617/s11527-013-0063-z

Cited by 103 publications

(28 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Beside the results of this work, experimental results from published investigations as a database have been also considered in order to verify the applicability of these models to Recycled Aggregate Concretes (RAC) . Figure shows the comparison of the test results with the prediction using Equations (4) and (5).…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Experimental and analytical study of bond behavior between recycled aggregate concrete and steel bars using a pullout test

Wardeh

Ghorbel

Gomart

et al. 2017

Structural Concrete

View full text Add to dashboard Cite

The paper presents the results of an experimental program carried out on 96 concrete pullout specimens prepared with natural and recycled aggregates using 10 and 12 mm diameter deformed steel bars. Steel rebars were concentrically embedded in pullout specimens with two embedded length of 5 and 10 times the rebar diameter. The present work includes six recycled concrete aggregate mixtures and two conventional concrete mixtures with C25/30 and C35/45 target class of compressive strength and S4 class of workability. For both series, specimens were fabricated with different incorporation ratios of fine and coarse recycled aggregates and only coarse recycled aggregates. Tensile load was applied gradually until the pullout failure occurred and the slip between the rebar and concrete was measured at the free and loaded ends for each loading level. Furthermore, systematic observations of failure surface have been made at both macroscopic and microscopic scales. Test results showed that for the same class of compressive strength the bond strength and related failure mechanisms remain very close and the obtained values are, at least, four times higher than the predicted values by Eurocode 2. The experimental results of this study, together with an extensive number of results reported in the literature, were used to describe the variation of bond strength with concrete compressive strength, embedded length, and concrete cover. In addition, an analytical bond‐slip relationship is proposed and the parameters of bond‐slip law were calibrated by an optimization algorithm.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Seara-Paz et al 16 studied the bond behavior of recycled aggregate concrete by replacing different percentages of natural coarse aggregate with recycled coarse aggregate (20, 50, and 100%). Pullout tests were carried out on 10 mm diameter deformed steel bars and a bonded length of five times the rebar diameter.…”

mentioning

confidence: 99%

Experimental and analytical study of bond behavior between recycled aggregate concrete and steel bars using a pullout test

Wardeh

Ghorbel

Gomart

et al. 2017

Structural Concrete

View full text Add to dashboard Cite

show abstract

“…The presence of these fine particles in the recycled coarse aggregate may decrease the bond between the recycled aggregate and the new cement paste and increase the mixing water necessary to achieve fixed workability when the concrete is made (130). The Spanish standard limits the fines content to 1% (169).…”

Section: Shape and Particle Size Distributionmentioning

confidence: 99%

Study of recycled concrete aggregate quality and its relationship with recycled concrete compressive strength using database analysis

2016

View full text Add to dashboard Cite

This work studies the physical and mechanical properties of recycled concrete aggregate (recycled aggregate from concrete waste) and their influence in structural recycled concrete compressive strength. For said purpose, a database has been developed with the experimental results of 152 works selected from over 250 international references.The processed database results indicate that the most sensitive properties of recycled aggregate quality are density and absorption. Moreover, the study analyses how the recycled aggregate (both percentage and quality) and the mixing procedure (pre-soaking or adding extra water) influence the recycled concrete strength of different categories (high or low water to cement ratios). When recycled aggregate absorption is low (under 5%), pre-soaking or adding extra water to avoid loss in workability will negatively affect concrete strength (due to the bleeding effect), whereas with high water absorption this does not occur and both of the aforementioned correcting methods can be accurately employed. RESUMEN: Estudio de la calidad del árido reciclado y su relación con la resistencia a compresión del hormigón reciclado utilizando una base de datos.El estudio analiza las propiedades físico-mecánicas de los áridos reciclados de hormigón (procedentes de residuos de hormigón) y su influencia en la resistencia a compresión del hormigón reciclado estructural. Para ello se ha desarrollado una base de datos con resultados de 152 trabajos seleccionados a partir de más de 250 referencias internacionales.Los resultados del tratamiento de la base indican que densidad y absorción son las propiedades más sensibles a la calidad del árido reciclado. Además, este estudio analiza cómo el árido reciclado (porcentaje y calidad) y el procedimiento de mezcla (presaturación o adición de agua extra) influyen en la resistencia del hormigón reciclado de diferentes categorías (alta o baja relación agua-cemento). Cuando la absorción es baja (inferior al 5%) presaturar o añadir agua para evitar pérdidas de trabajabilidad afectan negativamente a la resistencia (debido al bleeding), mientras que cuando es alta esto no sucede y ambos métodos son adecuados.

show abstract

“…For the bond-splitting cracks occurred mainly through the coarse RCA particles. Besides, when the pull-out failure of steel bar took place, the bond strength and the normalized bond strength to the square root of compressive strength of RAC declined with the increased content of RCA [42], and had a reduction with the enlarging of the particle size of RCA especially for deformed steel bar placed horizontally [43].…”

Section: Introductionmentioning

confidence: 99%

Bond Behaviors Between Full-Recycled-Aggregate Concrete and Deformed Steel-Bar

Li¹,

Zhao²,

Ren³

et al. 2017

TOCIEJ

View full text Add to dashboard Cite

Introduction:Full-recycled-aggregate concrete (aRAC) is a new concrete reusing 100% fine and coarse recycled aggregates produced from waste concrete of demolished concrete structures. As there is a lack of studies on the bond behavior between steel bar and aRAC, findings of this study are of significance for the structural application of aRAC. Method:This paper presents the pull-out test results of 24 groups aRAC specimens with deformed steel bar, and discusses the effects of aRAC strength, bond length and lateral constructional stirrups on the bond behavior between deformed steel bar and aRAC. Results and Conclusion:The bond stress and slip at key points of bond-slip curve are analyzed in relation to the tensile strength of aRAC and the bond length of steel bar. The bond-slip relationship between deformed steel bar and aRAC is proposed based on the test and analysis of this study.

show abstract

Bond behavior between steel reinforcement and recycled concrete

Cited by 103 publications

References 27 publications

Experimental and analytical study of bond behavior between recycled aggregate concrete and steel bars using a pullout test

Experimental and analytical study of bond behavior between recycled aggregate concrete and steel bars using a pullout test

Study of recycled concrete aggregate quality and its relationship with recycled concrete compressive strength using database analysis

Bond Behaviors Between Full-Recycled-Aggregate Concrete and Deformed Steel-Bar

Contact Info

Product

Resources

About