The paper focuses on the study of the resistance of certain sustainable cement mortars to high temperatures, simulating a hypothetical fire by performing a heat treatment at 750°C. A comparison is made between Portland cement and some LC3 mortars made by replacing a percentage of Portland cement with a calcined clay powder ("Kunkure fine"). In one of the mortars, a percentage of calcium carbonate was added, which is replaced in another of the mortars by Dolomite. The substitution is part of the aim to reduce the Portland content in the mortar, the production of which is responsible for large amounts of CO2 emissions. After treatment, certain performances such as compressive strength and porosity are measured. Finally, all mortars are subjected to SEM investigations.
L'elaborato verte sullo studio della resistenza di alcune malte cementizie sostenibili alle alte temperature, simulando un ipotetico incendio eseguendo un trattamento termico a 750°C. Viene fatto un confronto tra il cemento Portland e alcune malte LC3 ricavate sostituendo una percentuale di cemento Portland con una polvere di argilla ("Kunkure fine") calcinata. In una delle malte è stata aggiunta una percentuale di carbonato di calcio, che viene sostituito in un'altra delle malte da della Dolomite. La sostituzione rientra nello scopo di ridurre il contenuto di Portland all'interno della malta, la cui produzione è responsabile di grandi quantità di emissioni di CO2. Dopo il trattamento, vengono misurate alcune performance come resistenza a compressione e percolazione di acqua. Infine, tutte le malte vengono sottoposte a indagini al SEM.
Proprietà di miscele cementizie sostenibili sottoposte ad alte temperature
VESTIDELLO, DAVIDE
2022/2023
Abstract
The paper focuses on the study of the resistance of certain sustainable cement mortars to high temperatures, simulating a hypothetical fire by performing a heat treatment at 750°C. A comparison is made between Portland cement and some LC3 mortars made by replacing a percentage of Portland cement with a calcined clay powder ("Kunkure fine"). In one of the mortars, a percentage of calcium carbonate was added, which is replaced in another of the mortars by Dolomite. The substitution is part of the aim to reduce the Portland content in the mortar, the production of which is responsible for large amounts of CO2 emissions. After treatment, certain performances such as compressive strength and porosity are measured. Finally, all mortars are subjected to SEM investigations.File | Dimensione | Formato | |
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https://hdl.handle.net/20.500.12608/50244