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http://dx.doi.org/10.5345/JKIC.2010.10.1.039

An Experimental Study on Strength Development of Micro Grinding Fly-ash Mortar - Effect of Alkali Activator and High Temperature Curing on the Compressive Strength of Concrete -  

Cho, Hyun-Dae (대구대학교 건축공학과 대학원)
Jaung, Jae-Dong (대구대학교 건축공학과)
Publication Information
Journal of the Korea Institute of Building Construction / v.10, no.1, 2010 , pp. 39-47 More about this Journal
Abstract
Fly ash has the advantages, among others, of improving the characteristics of concrete, reducing the price of concrete products, improving the durability, and reducing hydration heat. However, when added in mass, it leads to problems such as insufficient concrete intensity, increase of AE use, and others, resulting in a limitation of the use volume. Therefore, this study is undertaken to solve the problems associated with themass use of fly ash through the high concentration powder ($4000{\sim}8000cm^2/g$) of fly ash, curing method, the addition of an alkali stimulation agent and others for the purpose of increasing the added value of the fly ash. The research showed that the intensity manifestation has an outstanding status, with the hydrates reaching a very stable condition if the rate of addition of a stimulation agent is appropriately used with the heightening of the fineness of the fly ash in the temperature range of $40^{\circ}C$, and if the applicable study is continued, it is likely to result ineffective value generation on the massive replacement of fly ash.
Keywords
Micro Grinding; Fly-Ash; Fineness; $Na_2SO_4$; $Ca(OH)_2$;
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  • Reference
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