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

Edyta Pawluczuk , Katarzyna Kalinowska-Wichrowska , Michał Bołtryk , José Jiménez , José Fernández


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.
Author Edyta Pawluczuk (FCEE / DCRE)
Edyta Pawluczuk,,
- Department of Construction and Road Engineering
, Katarzyna Kalinowska-Wichrowska (FCEE / DCRE)
Katarzyna Kalinowska-Wichrowska,,
- Department of Construction and Road Engineering
, Michał Bołtryk (FCEE / DCRE)
Michał Bołtryk,,
- Department of Construction and Road Engineering
, José Jiménez
José Jiménez,,
, José Fernández
José Fernández,,
Journal seriesMaterials, ISSN 1996-1944, (N/A 140 pkt)
Issue year2019
Publication size in sheets1.15
ASJC Classification2500 General Materials Science
Internal identifierROC 19-20
Languageen angielski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); with publication
Score (nominal)140
Score sourcejournalList
ScoreMinisterial score = 140.0, 12-02-2020, ArticleFromJournal
Publication indicators Scopus SNIP (Source Normalised Impact per Paper): 2017 = 1.285; WoS Impact Factor: 2018 = 2.972 (2) - 2018=3.532 (5)
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