초록

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Abstract ▼ AI-Helper

To use fly ash as an additive for concrete, authors collected 15 kinds of domestic fly ashes and tested the chemical compositions and physical properties of the fly ashes. Fluidity of the fly ash paste was also investigated. The result shows that the chemical compositions of the fly ashes were in th...

To use fly ash as an additive for concrete, authors collected 15 kinds of domestic fly ashes and tested the chemical compositions and physical properties of the fly ashes. Fluidity of the fly ash paste was also investigated. The result shows that the chemical compositions of the fly ashes were in the range of regulation of Korean Industrial Standards except ignition loss and the following relationships in fly ash were studied; specific surface and residue in standard sieve, specific surface and unit weight, residue in standard sieve and ignition loss. For the given flow properties, fly ash paste required higher water-binder ratio than cement paste.