A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Influence of Biomass Fly Ash on Sulfate Attack of Cement Stone
The aim of this work was to investigate the influence of tribochemically activated biomass fly ash on a sulfate attack of cement stone. A weight of 5%, 15%, and 25% of the portland cement were replaced with biomass fly ash. The samples were hardened for 28 days in water and then soaked in a 5% sodium sulfate () solution for 9 months at 20°C. The sulfate attack process was investigated by an X-ray diffraction (XRD) and thermal analysis (TA) and by estimating the compressive strength and mass loss of the samples. It was found that the addition of biomass fly ash increases the resistance of cement stone to a sulfate attack. The modified cement samples displayed a higher compressive strength and lower weight loss if compared to the ordinary portland cement samples. The biomass fly ash, as a source of additional alkali and due to a better particle distribution, slows down the involvement of Portlandite into an ettringite formation reaction and the decalcification of the calcium silicate hydrates.
Influence of Biomass Fly Ash on Sulfate Attack of Cement Stone
The aim of this work was to investigate the influence of tribochemically activated biomass fly ash on a sulfate attack of cement stone. A weight of 5%, 15%, and 25% of the portland cement were replaced with biomass fly ash. The samples were hardened for 28 days in water and then soaked in a 5% sodium sulfate () solution for 9 months at 20°C. The sulfate attack process was investigated by an X-ray diffraction (XRD) and thermal analysis (TA) and by estimating the compressive strength and mass loss of the samples. It was found that the addition of biomass fly ash increases the resistance of cement stone to a sulfate attack. The modified cement samples displayed a higher compressive strength and lower weight loss if compared to the ordinary portland cement samples. The biomass fly ash, as a source of additional alkali and due to a better particle distribution, slows down the involvement of Portlandite into an ettringite formation reaction and the decalcification of the calcium silicate hydrates.
Influence of Biomass Fly Ash on Sulfate Attack of Cement Stone
Kaminskas, Rimvydas (author) / Cesnauskas, Vytautas (author) / Barauskas, Irmantas (author)
2020-06-24
Article (Journal)
Electronic Resource
Unknown
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