Low-carbon binders, particularly Limestone Calcined Clay Cement (LC3), are emerging as sustainable alternatives to Ordinary Portland Cement (OPC). LC3 significantly reduces CO2 emissions, offering satisfying mechanical strength, increased durability, and reduced environmental impact. Simultaneously, the traditional ceramic production process generates residual powder that could serve as a viable cement substitute. Ceramic waste materials, including scraps, waste powder, sludge, and tile residues, may exhibit pozzolanic behaviour, making them valuable in construction materials. This research investigates potential benefits and challenges of incorporating grinding powders of porcelain stoneware into low-carbon cement. The LC3 formulated with recycled ceramic was analysed and compared to reference cement containing 50% of clinker and calcined clay to limestone proportion of 2:1. Mortar rheology was investigated by flow table test at different superplasticizer dosage and the fresh material was further investigated by 1H Time Domain-Nuclear Magnetic Resonance (TD-NMR) to detect the amount of capillary water available to fluidify the mixture. Colorimetric analysis was performed to quantify the visual impact of ceramic substituents on the material. Mechanical strength at 2 days enabled to validate the suitability of industrial waste to prepare eco-friendly mortar. The results show that the particle size distribution plays a crucial role in regulating superplasticizer need to reach acceptable workability. The TD-NMR findings validated that the cement composition influences the amount of detectable capillary water. However, the assessment of mechanical strength highlighted that ceramic waste can provides comparable performance to reference material encouraging the possible integration of recycled ceramics into low-carbon cement.
Ferrari, L., Nagmutdinova, A., Bignozzi, M.C., Franzoni, E. (2024). Exploring Sustainable Alternatives to OPC: Incorporation of Recycled Ceramics into Limestone Calcined Clay Cement. Milan : Springer Nature [10.1007/978-3-031-70277-8_18].
Exploring Sustainable Alternatives to OPC: Incorporation of Recycled Ceramics into Limestone Calcined Clay Cement
Ferrari, Lucia
;Nagmutdinova, Anastasiia;Bignozzi, Maria Chiara;Franzoni, Elisa
2024
Abstract
Low-carbon binders, particularly Limestone Calcined Clay Cement (LC3), are emerging as sustainable alternatives to Ordinary Portland Cement (OPC). LC3 significantly reduces CO2 emissions, offering satisfying mechanical strength, increased durability, and reduced environmental impact. Simultaneously, the traditional ceramic production process generates residual powder that could serve as a viable cement substitute. Ceramic waste materials, including scraps, waste powder, sludge, and tile residues, may exhibit pozzolanic behaviour, making them valuable in construction materials. This research investigates potential benefits and challenges of incorporating grinding powders of porcelain stoneware into low-carbon cement. The LC3 formulated with recycled ceramic was analysed and compared to reference cement containing 50% of clinker and calcined clay to limestone proportion of 2:1. Mortar rheology was investigated by flow table test at different superplasticizer dosage and the fresh material was further investigated by 1H Time Domain-Nuclear Magnetic Resonance (TD-NMR) to detect the amount of capillary water available to fluidify the mixture. Colorimetric analysis was performed to quantify the visual impact of ceramic substituents on the material. Mechanical strength at 2 days enabled to validate the suitability of industrial waste to prepare eco-friendly mortar. The results show that the particle size distribution plays a crucial role in regulating superplasticizer need to reach acceptable workability. The TD-NMR findings validated that the cement composition influences the amount of detectable capillary water. However, the assessment of mechanical strength highlighted that ceramic waste can provides comparable performance to reference material encouraging the possible integration of recycled ceramics into low-carbon cement.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.