Hydration and Insulation Characteristics of a Ground Granulated Blast Furnace Slag Based Non-Sintered Cement Using Circulating Fluidized Bed Combustion Ash as a Activator
| Autor: | Dong-Woo Yoo, Gang-Hyuk Lee, Yun-Gu Cho, Ju-Hyung Ha, Seung-Heun Lee |
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| Rok vydání: | 2015 |
| Předmět: |
Cement
Ettringite Materials science Materials Science (miscellaneous) Metallurgy Building and Construction Combustion chemistry.chemical_compound Thermal conductivity Compressive strength chemistry Mechanics of Materials Ground granulated blast-furnace slag Hardening (metallurgy) Fluidized bed combustion Composite material Civil and Structural Engineering |
| Zdroj: | Journal of the Korea Concrete Institute. 27:245-252 |
| ISSN: | 1229-5515 |
| DOI: | 10.4334/jkci.2015.27.3.245 |
| Popis: | As people have more interest in environment-friendly structures recently, many researchers are actively researching non-sintered cement in Korea and other countries. Non-sintered cement shows various characteristics of its reaction products and hardeners, depending on the kind of alkali activators. Thus, this study manufactures ground granulated blast furnace slag based non-sintered cement binder by using circulating fluidized bed combustion ash, which is a kind of industrial byproduct, as a stimulant, and investigated its hardening characteristics and hydration, depending on the rate of circulating fluidized bed combustion ash. Besides, this study investigated its insulation property according to the weight lightening of non-sintered cement. As a result, ettringite and C-S-H were mainly formed in the hydration, and it was possible to manufacture a non-sintered cement hardener over 50 MPa. Lastly, it was possible to manufacture a non-sintered cement hardener in a thermal conductivity level of 0.127 W/m·K when the compressive strength was 10 MPa for weight lightening. |
| Databáze: | OpenAIRE |
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