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Article

The Properties of Composites with Recycled Cement Mortar Used as a Supplementary Cementitious Material

Faculty of Civil and Environmental Engineering, Bialystok University of Technology, 15-351 Bialystok, Poland
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Materials 2020, 13(1), 64; https://doi.org/10.3390/ma13010064
Received: 21 November 2019 / Revised: 16 December 2019 / Accepted: 18 December 2019 / Published: 21 December 2019
(This article belongs to the Special Issue Supplementary Cementitious Materials in Concrete)
The process of recycling concrete rubble is accompanied by the formation of a large amount of fine fraction, which cannot be reused as aggregate. The results of research on the possibility of using recycled cement mortar (RCM), obtained during concrete recycling, as a cementitious supplementary material, are presented. The experimental research was carried out on the basis of two variables determining the recycling process: X1—temperature (range of variation 288–712 °C) and X2—time (range of variation 30–90 min) of thermal treatment of concrete rubble. The experiment included 10 series of new composites made with RCMs subjected to different variants of thermal treatment, and two additional control series. The best treatment parameters were determined based on the assessment of selected physical and mechanical properties of the new cement composites, as well as the analysis of characteristics and microstructure of RCM. The test results showed that proper thermal treatment of concrete rubble makes it possible to obtain a high-quality fine fraction, which has the properties of an active addition and can be used as a partial replacement for cement in mortars and concretes. View Full-Text
Keywords: recycled cementitious supplementary material; comprehensive concrete recycling; recycled fine fraction; rehydration reactivity recycled cementitious supplementary material; comprehensive concrete recycling; recycled fine fraction; rehydration reactivity
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MDPI and ACS Style

Kalinowska-Wichrowska, K.; Kosior-Kazberuk, M.; Pawluczuk, E. The Properties of Composites with Recycled Cement Mortar Used as a Supplementary Cementitious Material. Materials 2020, 13, 64. https://doi.org/10.3390/ma13010064

AMA Style

Kalinowska-Wichrowska K, Kosior-Kazberuk M, Pawluczuk E. The Properties of Composites with Recycled Cement Mortar Used as a Supplementary Cementitious Material. Materials. 2020; 13(1):64. https://doi.org/10.3390/ma13010064

Chicago/Turabian Style

Kalinowska-Wichrowska, Katarzyna, Marta Kosior-Kazberuk, and Edyta Pawluczuk. 2020. "The Properties of Composites with Recycled Cement Mortar Used as a Supplementary Cementitious Material" Materials 13, no. 1: 64. https://doi.org/10.3390/ma13010064

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