Szukana fraza: [Abstract = "Despite its high water demand, the obtained fine\-grained fraction has the potential for application in cement based composites as a reactive, pozzolanic additive. An acceptable activity index may be reached when the sulfate content is limited, implying benefits of combining the ash with low gypsum cements. The coarse\-grained fraction is significantly less reactive, while a high silica and aluminate content is related to improved mechanical properties of the composite. It can, therefore, potentially be used as a quasi\-inert additive or a substitute for sand."]

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