Materiales de Construcción, Vol 57, No 288 (2007)

Optimization of compressive strength in admixture-reinforced cement-based grouts


https://doi.org/10.3989/mc.2007.v57.i288.67

Ö. Tan
Universidad de Selcuk, Konya, Turkey

A. Sahin Zaimoglu
Centro de Formación Profesional Erzurum, Universidad de Ataturk, Turkey

Abstract


The Taguchi method was used in this study to optimize the unconfined (7-, 14- and 28-day) compressive strength of cement-based grouts with bentonite, fly ash and silica fume admixtures. The experiments were designed using an L16 orthogonal array in which the three factors considered were bentonite (0%, 0.5%, 1.0% and 3%), fly ash (10%, 20%, 30% and 40%) and silica fume (0%, 5%, 10% and 20%) content. The experimental results, which were analyzed by ANOVA and the Taguchi method, showed that fly ash and silica fume content play a significant role in unconfined compressive strength. The optimum conditions were found to be: 0% bentonite, 10% fly ash, 20% silica fume and 28 days of curing time. The maximum unconfined compressive strength reached under the above optimum conditions was 17.1 MPa.

Keywords


cement based grouts; bentonite; fly ash; silica fume; taguchi method

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References


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