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

Katarzyna Kalinowska-Wichrowska , Marta Kosior-Kazberuk , Edyta Pawluczuk

Abstract

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.
Author Katarzyna Kalinowska-Wichrowska (FCEE / DCRE)
Katarzyna Kalinowska-Wichrowska,,
- Department of Construction and Road Engineering
, Marta Kosior-Kazberuk (FCEE / DBSA)
Marta Kosior-Kazberuk,,
- Department of Building Structures and Architecture
, Edyta Pawluczuk (FCEE / DCRE)
Edyta Pawluczuk,,
- Department of Construction and Road Engineering
Journal seriesMaterials, ISSN 1996-1944, (N/A 140 pkt)
Issue year2020
Vol13
No1
Pages1-9
Publication size in sheets0.5
Article number64
Keywords in English recycled cementitious supplementary material; comprehensive concrete recycling; recycled fine fraction; rehydration reactivity
ASJC Classification2500 General Materials Science
DOIDOI:10.3390/ma13010064
URL https://www.mdpi.com/1996-1944/13/1/64
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, 14-02-2020, 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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