2026-04-29T20:37:45Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/80002023-11-14T01:05:32Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172
Repositorio Institucional de la Universidad de Burgos
author
Santamaría, Amaia
author
Revilla Cuesta, Víctor
author
Skaf Revenga, Marta
author
Romera, Jesús María
2023-11-13T11:28:45Z
2023-11-13T11:28:45Z
2023-07
2214-5095
http://hdl.handle.net/10259/8000
10.1016/j.cscm.2023.e02142
The construction industry in general is, through minor low-cost processing methods, converting
several of its by-products into viable materials; furthermore, some siderurgic sector by-products
are likewise of use. In this context, large-scale batches (mix volumes over 0.5 m3
) of good quality
structural concrete are proposed, in which two kinds of binder and two kinds of aggregate (steel
slag and recycled concrete) are used to perform four concrete mixtures, containing more than 80
% in mass of good-quality recycled materials. A batch of tests, both in the fresh and in the
hardened state, are performed, covering on-site placement and long-term properties, to guarantee
the suitability and the quality of the mixtures as structural concretes. Most of the results were
encouraging, mainly depending on the aggregate and the binder types that were used. The freshstate workability of all the test mixtures was good. All the results in terms of hardened properties,
strength (42 MPa in type I cement mixtures, and 32–38 MPa in type III cement mixtures), stiffness, long-term shrinkage, and microstructural state (porosity, permeability) were acceptable,
their quality depending on the type of each component. The good results of the mixtures based on
the slag-based binder deserve attention. Some weak points found were the slightly higher specific
weight of the slag aggregate mixes (amounting to more than 2.7 Mg/m3
), plastic shrinkage rates
(in some cases greater than 1.2–1.5 thousand), and loss of resistance against chlorine penetration
in recycled concrete mixes. However, drawbacks of that sort are no obstacle to their use in most
structural applications.
eng
Attribution-NonCommercial-NoDerivatives 4.0 Internacional
Electric arc furnace slag
Ground granulated black furnace slag
Ladle furnace slag
Quarry tailings
Recycled concrete aggregate
Sustainable concrete
Fresh properties
Shrinkage
Water penetration
Chloride penetration
Full-scale sustainable structural concrete containing high proportions of by-products and waste
info:eu-repo/semantics/article
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URL
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