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Durability performance of hybrid binder concretes containing non-ferrous slag and recycled aggregates

Pithchai Pandian Sivakumar, Yury Villagran Zaccardi (UGent) , Thomas Lapauw, Elke Gruyaert, Stijn Matthys (UGent) and Nele De Belie (UGent)
(2023) SUSTAINABILITY. 15(8).
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Abstract
Novel hybrid binder concrete mixes with alkali-activated non-ferrous slag (NFS), either alone or in combination with blast furnace slag (BFS), as partial replacement of Portland cement, and containing 50% recycled aggregates, were successfully manufactured. The compressive strength, carbonation resistance, chloride resistance, frost scaling, sorptivity coefficient, and water penetration resistance were thoroughly assessed. The presence of recycled aggregates had an adverse effect on early-age strength, but after 91 days there was no difference between concrete with and without recycled aggregates. The chloride-binding capacity was enhanced in the BFS/NFS system with recycled aggregates (reduction in chloride ingress coefficients of ~28–35% compared to recycled concrete with NFS only). This is most likely caused by the binding of Cl ions in calcium alumina silicate hydrates (C-A-S-H) and ettringite phases. However, when compared to the system with virgin aggregates, BFS/NFS concrete with recycled aggregates showed increased carbonation rate (+30%) and frost scaling (+15%). Durability properties, such as sorptivity and water penetration resistance, were positively affected by the curing time for the BFS/NFS system (~35–45% further improvement from 28 to 90 days with respect to the NFS system). Specimens that were wet cured for 91 days showed improved results compared to the 28-day cured samples due to the slow pozzolanic reaction of the NFS.
Keywords
Management, Monitoring, Policy and Law, Renewable Energy, Sustainability and the Environment, Geography, Planning and Development, Building and Construction, CHLORIDE-INDUCED CORROSION, ALKALI-ACTIVATED BINDERS, PORTLAND-CEMENT, PORE SOLUTION, PART 1, CARBONATION, HYDRATION, STRENGTH, MORTARS, REPLACEMENT, non-ferrous slag, recycled aggregates, hybrid binders, carbonation, chloride penetration, water transport

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Citation

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MLA
Sivakumar, Pithchai Pandian, et al. “Durability Performance of Hybrid Binder Concretes Containing Non-Ferrous Slag and Recycled Aggregates.” SUSTAINABILITY, vol. 15, no. 8, 2023, doi:10.3390/su15086338.
APA
Sivakumar, P. P., Villagran Zaccardi, Y., Lapauw, T., Gruyaert, E., Matthys, S., & De Belie, N. (2023). Durability performance of hybrid binder concretes containing non-ferrous slag and recycled aggregates. SUSTAINABILITY, 15(8). https://doi.org/10.3390/su15086338
Chicago author-date
Sivakumar, Pithchai Pandian, Yury Villagran Zaccardi, Thomas Lapauw, Elke Gruyaert, Stijn Matthys, and Nele De Belie. 2023. “Durability Performance of Hybrid Binder Concretes Containing Non-Ferrous Slag and Recycled Aggregates.” SUSTAINABILITY 15 (8). https://doi.org/10.3390/su15086338.
Chicago author-date (all authors)
Sivakumar, Pithchai Pandian, Yury Villagran Zaccardi, Thomas Lapauw, Elke Gruyaert, Stijn Matthys, and Nele De Belie. 2023. “Durability Performance of Hybrid Binder Concretes Containing Non-Ferrous Slag and Recycled Aggregates.” SUSTAINABILITY 15 (8). doi:10.3390/su15086338.
Vancouver
1.
Sivakumar PP, Villagran Zaccardi Y, Lapauw T, Gruyaert E, Matthys S, De Belie N. Durability performance of hybrid binder concretes containing non-ferrous slag and recycled aggregates. SUSTAINABILITY. 2023;15(8).
IEEE
[1]
P. P. Sivakumar, Y. Villagran Zaccardi, T. Lapauw, E. Gruyaert, S. Matthys, and N. De Belie, “Durability performance of hybrid binder concretes containing non-ferrous slag and recycled aggregates,” SUSTAINABILITY, vol. 15, no. 8, 2023.
@article{01H46EPCD0D9H7FQAET6A8PTXJ,
  abstract     = {{Novel hybrid binder concrete mixes with alkali-activated non-ferrous slag (NFS), either alone or in combination with blast furnace slag (BFS), as partial replacement of Portland cement, and containing 50% recycled aggregates, were successfully manufactured. The compressive strength, carbonation resistance, chloride resistance, frost scaling, sorptivity coefficient, and water penetration resistance were thoroughly assessed. The presence of recycled aggregates had an adverse effect on early-age strength, but after 91 days there was no difference between concrete with and without recycled aggregates. The chloride-binding capacity was enhanced in the BFS/NFS system with recycled aggregates (reduction in chloride ingress coefficients of ~28–35% compared to recycled concrete with NFS only). This is most likely caused by the binding of Cl ions in calcium alumina silicate hydrates (C-A-S-H) and ettringite phases. However, when compared to the system with virgin aggregates, BFS/NFS concrete with recycled aggregates showed increased carbonation rate (+30%) and frost scaling (+15%). Durability properties, such as sorptivity and water penetration resistance, were positively affected by the curing time for the BFS/NFS system (~35–45% further improvement from 28 to 90 days with respect to the NFS system). Specimens that were wet cured for 91 days showed improved results compared to the 28-day cured samples due to the slow pozzolanic reaction of the NFS.}},
  articleno    = {{6338}},
  author       = {{Sivakumar, Pithchai Pandian and Villagran Zaccardi, Yury and Lapauw, Thomas and Gruyaert, Elke and Matthys, Stijn and De Belie, Nele}},
  issn         = {{2071-1050}},
  journal      = {{SUSTAINABILITY}},
  keywords     = {{Management, Monitoring, Policy and Law,Renewable Energy, Sustainability and the Environment,Geography, Planning and Development,Building and Construction,CHLORIDE-INDUCED CORROSION,ALKALI-ACTIVATED BINDERS,PORTLAND-CEMENT,PORE SOLUTION,PART 1,CARBONATION,HYDRATION,STRENGTH,MORTARS,REPLACEMENT,non-ferrous slag,recycled aggregates,hybrid binders,carbonation,chloride penetration,water transport}},
  language     = {{eng}},
  number       = {{8}},
  pages        = {{19}},
  title        = {{Durability performance of hybrid binder concretes containing non-ferrous slag and recycled aggregates}},
  url          = {{http://doi.org/10.3390/su15086338}},
  volume       = {{15}},
  year         = {{2023}},
}
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