Next Article in Journal
Microstructure and Mechanical Properties of an Ultrasonic Spot-Welded Aluminum-to-Aluminum Joint: Response to Interlayer Thickness
Previous Article in Journal
A Literature Review Study on Atomic Ions Dissolution of Titanium and Its Alloys in Implant Dentistry
Article

The Influence of Heat and Mechanical Treatment of Concrete Rubble on the Properties of Recycled Aggregate Concrete

1
Faculty of Civil and Environmental Engineering, Bialystok University of Technology, 15-351 Białystok, Poland
2
School of Engineering Sciences of Belmez, University of Córdoba, 14240 Belmez, Spain
*
Author to whom correspondence should be addressed.
Materials 2019, 12(3), 367; https://doi.org/10.3390/ma12030367
Received: 29 December 2018 / Revised: 18 January 2019 / Accepted: 21 January 2019 / Published: 24 January 2019
Concrete is a building material commonly used for ages. Therefore, in the result of repairs or demolition of building structures, large amounts of concrete rubble are created, which requires appropriate management. The aim of the realized research was to determine the influence of heat and mechanical treatment of concrete rubble on the properties of recycled aggregate concrete. The research experiment included 12 series, with three variables: X1—roasting temperature (300, 600, 900 °C), X2—time of mechanical treatment (5, 10, 15 min), X3—content of coarse recycled aggregates (20, 40, 60% by volume). Two additional series containing recycled aggregate without treatment and natural aggregate were also prepared. Established properties of individual aggregates have confirmed a positive effect of thermo-mechanical treatment. Then, based on the results of compressive strength, flexural strength, Young’s modulus, volumetric density, water absorption, water permeability and capillarity, the most favourable parameters of heat and mechanical treatment of concrete were determined. The test results showed that appropriate treatment of concrete rubble allows to obtain high-quality coarse aggregate and valuable fine fraction. This was also confirmed by the macro- and microscopic observations of the aggregate and separated cement paste. Works realized on the concrete recycling method resulted in obtaining a patent PAT.229887. View Full-Text
Keywords: recycled concrete aggregate; recycled aggregate concrete; concrete gravel; thermo-mechanical treatment; microstructure; X-ray diffraction recycled concrete aggregate; recycled aggregate concrete; concrete gravel; thermo-mechanical treatment; microstructure; X-ray diffraction
Show Figures

Figure 1

MDPI and ACS Style

Pawluczuk, E.; Kalinowska-Wichrowska, K.; Bołtryk, M.; Jiménez, J.R.; Fernández, J.M. The Influence of Heat and Mechanical Treatment of Concrete Rubble on the Properties of Recycled Aggregate Concrete. Materials 2019, 12, 367. https://doi.org/10.3390/ma12030367

AMA Style

Pawluczuk E, Kalinowska-Wichrowska K, Bołtryk M, Jiménez JR, Fernández JM. The Influence of Heat and Mechanical Treatment of Concrete Rubble on the Properties of Recycled Aggregate Concrete. Materials. 2019; 12(3):367. https://doi.org/10.3390/ma12030367

Chicago/Turabian Style

Pawluczuk, Edyta, Katarzyna Kalinowska-Wichrowska, Michał Bołtryk, José R. Jiménez, and José M. Fernández 2019. "The Influence of Heat and Mechanical Treatment of Concrete Rubble on the Properties of Recycled Aggregate Concrete" Materials 12, no. 3: 367. https://doi.org/10.3390/ma12030367

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop