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Research Paper | Civil Engineering | Indonesia | Volume 7 Issue 5, May 2018
Investigation of The Dominant Factors on Promoting Pozzolanic reaction of Fly Ash Based Aluminosilicate
Abstract: A pozzolanic binder generates pozzolanic reaction, in this study the pozzolanic binder used is Fly ash based aluminosilicate. In order to achieve the maximal result from pozzolanic reaction there are several factors that play an important role in the process. The main goal of this study is to identify the most dominant factors on promoting the pozzolanic reaction, because more reactive the pozzolanic more strength will be gained. To identify the important factors, identifying the initial characteristic of the fly ash is realized using several tests. The particle size distribution, its mineralogical content is very important on gaining the strength. The type of the hydraulic additional binder is also investigated in this study. From the result, it is remarked that the reactivity of the lime is very significant on promoting the pozzolanic binder. Chapelle test is realized to identify the percentage of CaO available in the fly ash to provide the pozzolanic reaction to reacts. The result shows that mineralogical content of the fly ash is more dominant on increasing the strength compared to its particle size distribution. The amount of CaO free plays very significant role on promoting the success of pozzolanic reaction on improving the unconfined compressive strength of the concrete.
Keywords: Pozzolanic reaction, fly ash, lime hydration, Chapelle test and unconfined compressive strength
Edition: Volume 7 Issue 5, May 2018,
Pages: 173 - 177
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