Abstract
The results of experimental studies of fine-grained concrete are presented, the formation of the structure and properties of which occurs with the participation of mineral and plasticizing additives. Metakaolin obtained by heat treatment of kaolin at a temperature of 750 °C was used as a mineral reactive aluminosilicate additive, and the water reducing component of concrete was a superplasticizer based on polycarboxylates. It is shown that one of the main factors for improving the physical and mechanical characteristics of concrete is the optimization of the particle size distribution of the fine aggregate and the finely dispersed part of concrete. It has been established that metakaolin plays the role of a multifunctional component in the composition of concrete: a microfiller, a reactive additive with a high pozzolanic effect. The features of hydration processes are shown, and the type of structure-forming phases formed with the participation of metakaolin is established. It is shown that using polycarboxylate and aluminosilicate materials, it is possible to increase the strength and durability of concrete.
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Zimakova, G., Kasper, E., Bochkareva, O. (2020). Strengthening of Concrete Composites Using Polycarboxylate and Aluminosilicate Materials. In: Popovic, Z., Manakov, A., Breskich, V. (eds) VIII International Scientific Siberian Transport Forum. TransSiberia 2019. Advances in Intelligent Systems and Computing, vol 1116. Springer, Cham. https://doi.org/10.1007/978-3-030-37919-3_31
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DOI: https://doi.org/10.1007/978-3-030-37919-3_31
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