Ingurune eraikiaren ebaluazio eta kudeaketa modeloak

Ekodiseinua materialetan, eraikuntza-sistemetan eta ingurune eraikian

Shear strength assessment of reinforced concrete components containing EAF steel slag aggregates

Egileak:
Amaia Santamaría, Jesús María Romera, Ignacio Marcos, Víctor Revilla-Cuesta, Vanesa Ortega-López
Urtea:
2022
Aldizkaria:
Journal of Building Engineering
Kuartila:
Q1
Liburukia:
46
ISBN/ISSN:
2352-7102
DOI:
https://doi.org/10.1016/j.jobe.2021.103730
Deskribapena:

<b> ABSTRACT</b><br>

Electric Arc Furnace (EAF) slag can be reused as aggregate in Portland cement concrete mixes. The addition of EAFS and other waste co-products (fly ash, blast furnace slag) will modify the binding properties and will, importantly, enhance the global sustainability of such concretes. These mix designs offer acceptable pumpability and self-compaction in the fresh state and can be reinforced with fibers. In this study, eight different concrete mixes are designed within the range of medium-strength concretes (30–50 MPa) and are characterized in both the fresh and the hardened state. Large concrete volumes are used to pour reinforced beams, which are then subjected to small-span high-load tests to evaluate their resistance to shear stress, by analyzing two types of transversal (shear) reinforcement. The tests yielded promising results, contributing additional evidence on the viability of using recycled EAFS aggregate in structural applications. The mechanical behavior of these concretes was closely correlated with the strength predictions calculated with the formulas listed in various international standards.

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<b> ACKNOWLEDGEMENTS</b><br>

This work was supported by the Spanish Ministry of Universities, MICINN, AEI, EU and ERDF [PID2020-113837RB-I00; RTI2018-097079-B-C31; 10.13039/501100011033; FPU17/03374]; the Junta de Castilla y León and ERDF [UIC-231, BU119P17]; Youth Employment Initiative (JCyL) and ESF [UBU05B_1274]; the University of Burgos [grant number SUCONS, Y135.GI], and, finally, our thanks also go to the <b>SAREN</b> research group (IT1619-22, Basque Government) and likewise to CHRYSO and HORMOR for supplying the materials for research.

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