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An Investigation on the Pozzolanic Activity of Andesitic Rocks from the Southwest of Algeria

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The goal of this study is determining the validity of the andesitic rocks taken from unused fields of the southwest Algeria (Bechar area) as partial cement replacement. For this purpose, an experimental investigation was carried out to evaluate the mechanical properties of mortars containing a party of andesite. A portion of cement was replaced by volcanic rocks at 5, 10, 15) and 20%t. The investigation considers the pozzolanic activity of this material, whilst the effect of andesite on mechanical characteristics (compressive and the flexural strength) were studied at different ages.
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Volcanic Rocks; Mortar; Cement; Activity Index Method; Compressive Strengths; South-Western Algeria

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