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A platform for research: civil engineering, architecture and urbanism
Preparation and properties of electrically conductive aggregate made using magnetically separated fly ash
HighlightsA new kind of conductive aggregate was prepared by magnetically separated fly ash.The conducive aggregate has very good conductivity.Rust stain of conductive aggregates used to investigate iron particle distribution.
AbstractA new type of conductive aggregate was prepared by the calcination of magnetically separated fly ash (MSFA). The effects of the calcination atmosphere, calcination temperature, and iron oxide content on the electrical resistivity were studied. Experimental results show that the optimal calcination conditions are a reducing atmosphere and a temperature of 1150°C. Iron oxides were reduced to iron by the reducing atmosphere and formed a continuous electrical path; the conductive mechanism is electron conduction. The water absorption and apparent density of the optimal conductive aggregate were 5%, and ∼2.0g/cm3. The new series of conductive aggregates provided good electrical conductivity (volume resistivity of all conductive aggregates<10Ω-cm).
Preparation and properties of electrically conductive aggregate made using magnetically separated fly ash
HighlightsA new kind of conductive aggregate was prepared by magnetically separated fly ash.The conducive aggregate has very good conductivity.Rust stain of conductive aggregates used to investigate iron particle distribution.
AbstractA new type of conductive aggregate was prepared by the calcination of magnetically separated fly ash (MSFA). The effects of the calcination atmosphere, calcination temperature, and iron oxide content on the electrical resistivity were studied. Experimental results show that the optimal calcination conditions are a reducing atmosphere and a temperature of 1150°C. Iron oxides were reduced to iron by the reducing atmosphere and formed a continuous electrical path; the conductive mechanism is electron conduction. The water absorption and apparent density of the optimal conductive aggregate were 5%, and ∼2.0g/cm3. The new series of conductive aggregates provided good electrical conductivity (volume resistivity of all conductive aggregates<10Ω-cm).
Preparation and properties of electrically conductive aggregate made using magnetically separated fly ash
Wang, Ziyi (author) / Wang, Zhi (author) / Tang, Shengxuan (author) / He, Yunfei (author)
Construction and Building Materials ; 150 ; 547-557
2017-05-26
11 pages
Article (Journal)
Electronic Resource
English
| British Library Online Contents | 2017
| British Library Online Contents | 2017
| Taylor & Francis Verlag | 2023