A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Chloride-binding capacity of ternary concretes containing fly ash and untreated sugarcane bagasse ash
https://orcid.org/0000-0002-9929-1770
Abstract In order to understand the role of untreated sugarcane bagasse ash (UtSCBA) in chloride binding of ternary concretes prepared with fly ash, an experimental program was carried out. Concrete specimens containing only Portland cement, Portland cement + fly ash and Portland cement + fly ash + UtSCBA were manufactured. After curing these specimens were exposed to a chloride solution for 3000 days. After exposure, a microstructural characterization using scanning electron microscopy and X-Ray diffraction was conducted. The compressive strength, electrical resistivity of the concretes and percentage of voids, were also obtained, while information on chloride binding was obtained from the difference between the amount of total and free chlorides. Diffractograms showed that chlorides chemically reacted with the Afm and Aft phases of all concretes to form Friedel's salt. In summary, ternary concretes containing UtSCBA showed the highest chloride-binding capacity.
Highlights Ternary concretes containing untreated sugarcane bagasse ash were manufactured. The ternary concretes were exposed to a Chloride (Cl−) solution for 3000 days. A microstructural characterization of the ternary concretes was conducted. The Chloride binding capacities (Pb) of the concretes were estimated using free and total Cl− contents. The Pb of the ternary concretes was higher than the Pb of the control concrete.
Chloride-binding capacity of ternary concretes containing fly ash and untreated sugarcane bagasse ash
https://orcid.org/0000-0002-9929-1770
Abstract In order to understand the role of untreated sugarcane bagasse ash (UtSCBA) in chloride binding of ternary concretes prepared with fly ash, an experimental program was carried out. Concrete specimens containing only Portland cement, Portland cement + fly ash and Portland cement + fly ash + UtSCBA were manufactured. After curing these specimens were exposed to a chloride solution for 3000 days. After exposure, a microstructural characterization using scanning electron microscopy and X-Ray diffraction was conducted. The compressive strength, electrical resistivity of the concretes and percentage of voids, were also obtained, while information on chloride binding was obtained from the difference between the amount of total and free chlorides. Diffractograms showed that chlorides chemically reacted with the Afm and Aft phases of all concretes to form Friedel's salt. In summary, ternary concretes containing UtSCBA showed the highest chloride-binding capacity.
Highlights Ternary concretes containing untreated sugarcane bagasse ash were manufactured. The ternary concretes were exposed to a Chloride (Cl−) solution for 3000 days. A microstructural characterization of the ternary concretes was conducted. The Chloride binding capacities (Pb) of the concretes were estimated using free and total Cl− contents. The Pb of the ternary concretes was higher than the Pb of the control concrete.
Chloride-binding capacity of ternary concretes containing fly ash and untreated sugarcane bagasse ash
https://orcid.org/0000-0002-9929-1770
Abstract In order to understand the role of untreated sugarcane bagasse ash (UtSCBA) in chloride binding of ternary concretes prepared with fly ash, an experimental program was carried out. Concrete specimens containing only Portland cement, Portland cement + fly ash and Portland cement + fly ash + UtSCBA were manufactured. After curing these specimens were exposed to a chloride solution for 3000 days. After exposure, a microstructural characterization using scanning electron microscopy and X-Ray diffraction was conducted. The compressive strength, electrical resistivity of the concretes and percentage of voids, were also obtained, while information on chloride binding was obtained from the difference between the amount of total and free chlorides. Diffractograms showed that chlorides chemically reacted with the Afm and Aft phases of all concretes to form Friedel's salt. In summary, ternary concretes containing UtSCBA showed the highest chloride-binding capacity.
Highlights Ternary concretes containing untreated sugarcane bagasse ash were manufactured. The ternary concretes were exposed to a Chloride (Cl−) solution for 3000 days. A microstructural characterization of the ternary concretes was conducted. The Chloride binding capacities (Pb) of the concretes were estimated using free and total Cl− contents. The Pb of the ternary concretes was higher than the Pb of the control concrete.
Chloride-binding capacity of ternary concretes containing fly ash and untreated sugarcane bagasse ash
Franco-Luján, Víctor Alberto (author) / Mendoza-Rangel, José Manuel (author) / Jiménez-Quero, Víctor Guillermo (author) / Montes-García, Pedro (author)
2021-03-27
Article (Journal)
Electronic Resource
English
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