Mechanical properties and hydration mechanism of nano-silica modified alkali-activated thermally activated recycled cement

Xi, Xinyue; Zheng, Yuanxun; Zhuo, Jingbo; Zhang, Peng; Golewski, Grzegorz Ludwik; Du, Chaowei

doi:10.1016/j.jobe.2024.110998

Journal of Building Engineering

2024

DOI: 10.1016/j.jobe.2024.110998

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Mechanical properties and hydration mechanism of nano-silica modified alkali-activated thermally activated recycled cement

Xinyue Xi,

Yuanxun Zheng,

Jingbo Zhuo

et al.

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High temperature performance of recycled fine concrete

Algourdin,

Bideux,

Mesticou

et al. 2024

Low-carbon Mater. Green Constr.

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The objective of this study is to explore the physical and mechanical behaviour of concretes comprising four different ratios of recycled fine (RF), namely (5%, 10%, 15% and 20%) along with that of a reference concrete (Cref-0%), under three different heating–cooling cycles (200 °C, 400 °C and 600 °C). The thermal properties of concrete during heating and cooling (20 °C – 600 °C – 20 °C) were also investigated. It was determined that the physical properties (mass loss and ethanol porosity) of recycled concrete (RC) with 5% of recycled fine (RC-5%) were similar to those of Cref-0%. At ambient temperatures, the higher the ratio of recycled fines, the lower the residual compressive strength and residual elastic modulus of the recycled concrete. After thermal loading at 600 °C, the residual mechanical properties of all types of concrete were equivalent, regardless of the content recycled fine.

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High temperature performance of recycled fine concrete

Algourdin,

Bideux,

Mesticou

et al. 2024

Low-carbon Mater. Green Constr.

View full text Add to dashboard Cite

show abstract

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Mechanical properties and hydration mechanism of nano-silica modified alkali-activated thermally activated recycled cement

Cited by 1 publication

References 54 publications

High temperature performance of recycled fine concrete

High temperature performance of recycled fine concrete

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