Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6711569 | Construction and Building Materials | 2018 | 11 Pages |
Abstract
This study evaluates the effects of microwave oven calcining conditions on the pozzolanicity of sugar cane bagasse ashes (SCBA) generated by the electric power cogeneration industry. The calcining temperatures varied between 600â¯Â°C and 800â¯Â°C, and the permanence times were 60â¯min in an electric oven and 30, 45 and 60â¯min in a microwave oven. To evaluate the behaviour of the ashes according to different calcining conditions, we carried out the following analyses: granulometric distribution (laser diffraction), oxide percentages (XRF), loss on ignition (LOI), powder X-ray diffraction (XRD), pozzolanic reactivity, determination of amorphous silica content and thermogravimetry of hydrated lime pastes (DTG). The results show that SCBA calcination in a microwave oven results in ashes with greater pozzolanic reactivity and a significantly more efficient burning process than in an electric oven.
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Authors
J.A. Rossignolo, M.V. Borrachero, L. Soriano, J. Payá,