Influences of Carbonated Recycled Concrete Fines on Cement Hydration
نویسندگان
چکیده
The preparation of recycled concrete aggregate generates a lot fines, which are obstacles for implementing the aggregate. In this work, carbonation treatment is applied to improve properties fine, and influences carbonated fine (CRCF) on cement hydration process evaluated. Both fresh hardened paste samples replacing 0 30% CRCF measured. results reveal that addition obviously accelerates cement, especially during early stage, initial final setting times containing both reduced by approximately 25% compared control. improves strength gain influence becomes obvious with longer curing; relative compressive increased 18% control after being cured 28 days. At same time, accelerated total heat 48 h significantly decreased CRCF. Specifically, less than 50% 0% Besides that, consumes CH in pore structure paste. morphology hydrated shows shape ettringite formed within sample those other ones CRCF, length decreases as contents increase. addition, does not show particles, means reduces forming samples. Thus, findings from work provide better understanding field waste reuse.
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ژورنال
عنوان ژورنال: Buildings
سال: 2023
ISSN: ['2075-5309']
DOI: https://doi.org/10.3390/buildings13040926