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Reduction of the cement content in mortars made with fine concrete aggregates

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Abstract

This study’s main objective is to show the viability of reducing the cement content of mortars by incorporating fine crushed concrete aggregates whilst simultaneously maintaining a good performance in terms of functional requisites. The advantages of this, if the results are positive, are both environmental and economic: less energy is consumed in cement manufacture and the mortars’ direct costs are lower. To evaluate the hypothetical binding characteristics of concrete fines incorporated in mortars, and thus allow a cement consumption reduction, various standard tests were performed to quantify their most important properties (e.g. mechanical strength, water-related performance, cracking susceptibility, shrinkage) and compare them with those of a reference mortar containing no recycled fines and not reducing the cement content.

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Correspondence to Jorge de Brito.

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Braga, M., de Brito, J. & Veiga, R. Reduction of the cement content in mortars made with fine concrete aggregates. Mater Struct 47, 171–182 (2014). https://doi.org/10.1617/s11527-013-0053-1

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