Analysis of the Utilization of Air-Cooled Blast Furnace Slag as Industrial Waste Aggregates in Self-Compacting Concrete

José D. Ríos, Adelardo Vahí, Carlos Leiva, Antonio Martínez- De la Concha and Héctor Cifuentes
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José D. Ríos: Departament of Continuum Mechanics and Structural Analysis, ETS Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Sevilla, Spain
Adelardo Vahí: Departament of Continuum Mechanics and Structural Analysis, ETS Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Sevilla, Spain
Carlos Leiva: Department of Chemical and Environmental Engineering, ETS Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Sevilla, Spain
Antonio Martínez- De la Concha: Departament of Continuum Mechanics and Structural Analysis, ETS Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Sevilla, Spain
Héctor Cifuentes: Departament of Continuum Mechanics and Structural Analysis, ETS Ingeniería, Universidad de Sevilla, Camino de los Descubrimientos, s/n, 41092 Sevilla, Spain

Sustainability, 2019, vol. 11, issue 6, 1-18

Abstract: In this work, the effects of replacing the aggregates of self-compacting concrete by air-cooled blast furnace slag have been analysed. Different mixes have been manufactured by substituting the fine and coarse natural aggregates by air-cooled blast furnace slag. The fracture energy and the tensile and compressive strength have been determined for each mix. The self-compacting properties of the mixes, or the absence of them, have been observed. The main goals of this research are the decrease of the price of aggregates, reduction of the industrial waste, and attenuation the rate of consumption of natural resources. The results show that the self-compactability of the concrete is gradually lost as the slag content is increased, thus, when the ratio of replacement is low, the concrete keeps the self-compacting properties. Nevertheless, the loss of self-compaction affects the mechanical properties by increasing its strength. An air-cooled blast furnace slag did not present problems of heavy metals leaching.

Keywords: self-compacting concrete; air-cooled blast furnace slag; fracture behaviour; heavy metals leaching; concrete manufacturing (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2019
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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