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Title	Alternative hydraulic binder development based on brick fines: Influence of particle size and substitution rate
ID_Doc	14955
Authors	Grellier, A; Bulteel, D; Bouarroudj, ME; Rémond, S; Zhao, ZF; Courard, L
Title	Alternative hydraulic binder development based on brick fines: Influence of particle size and substitution rate
Year	2021
Published
Abstract	Brick waste is produced in large quantities by the civil engineering sector without any real valorization. One way of valorizing this material consists in incorporating brick fines in cement. The substitution of clinker with this material produces an alternative hydraulic binder. In addition to the reduction in cost and energy saving, blended cement based on brick fines would present the advantage to improve the environmental impact of cement production by reducing its CO2 emission. Therefore, the aim of this paper is to study the use of bricks fines in cement, focusing more specifically on the impact of the size of their particles on fresh and hardened cement paste properties. Potential pozzolanic activity of the three brick fines was investigated as well as its influence on the microstructure and strength of cement paste samples. The results showed that it was possible to produce blended cement based on brick fines. Substitution rates up to 20% with brick fines whose dimensions are close to those of clinker gave good performances compared to the reference cement. The brick fines clearly impact the hydration process through nucleation action and pozzolanic activity.
PDF	https://hal.science/hal-03252536/file/S2352710221001194.pdf

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