Physical and Mechanical Behavior of New Ternary and Hybrid Eco-Cements Made from Construction and Demolition Waste
Construction and demolition waste (CDW) currently constitutes a waste stream with growing potential use as a secondary raw material in the manufacture of eco-cements that offer smaller carbon footprints and less clinker content than conventional cements. This study analyzes the physical and mechanic...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-04-01
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| Series: | Materials |
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| Online Access: | https://www.mdpi.com/1996-1944/16/8/3093 |
| _version_ | 1797604525601718272 |
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| author | Moisés Frías Manuel Monasterio Jaime Moreno-Juez |
| author_facet | Moisés Frías Manuel Monasterio Jaime Moreno-Juez |
| author_sort | Moisés Frías |
| collection | DOAJ |
| description | Construction and demolition waste (CDW) currently constitutes a waste stream with growing potential use as a secondary raw material in the manufacture of eco-cements that offer smaller carbon footprints and less clinker content than conventional cements. This study analyzes the physical and mechanical properties of two different cement types, ordinary Portland cement (OPC) and calcium sulfoaluminate (CSA) cement, and the synergy between them. These cements are manufactured with different types of CDW (fine fractions of concrete, glass and gypsum) and are intended for new technological applications in the construction sector. This paper addresses the chemical, physical, and mineralogical characterization of the starting materials, as well as the physical (water demand, setting time, soundness, water absorption by capillary action, heat of hydration, and microporosity) and mechanical behavior of the 11 cements selected, including the two reference cements (OPC and commercial CSA). From the analyses obtained, it should be noted that the addition of CDW to the cement matrix does not modify the amount of water by capillarity with respect to OPC cement, except for Labo CSA cement which increases by 15.7%, the calorimetric behavior of the mortars is different depending on the type of ternary and hybrid cement, and the mechanical resistance of the analysed mortars decreases. The results obtained show the favorable behavior of the ternary and hybrid cements made with this CDW. Despite the variations observed in the different types of cement, they all comply with the current standards applicable to commercial cements and open up a new opportunity to improve sustainability in the construction sector. |
| first_indexed | 2024-03-11T04:47:32Z |
| format | Article |
| id | doaj.art-539281af4f1046b5b88285c7239b6fdf |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T04:47:32Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-539281af4f1046b5b88285c7239b6fdf2023-11-17T20:13:01ZengMDPI AGMaterials1996-19442023-04-01168309310.3390/ma16083093Physical and Mechanical Behavior of New Ternary and Hybrid Eco-Cements Made from Construction and Demolition WasteMoisés Frías0Manuel Monasterio1Jaime Moreno-Juez2Eduardo Torroja Institute for Construction Sciences (IETcc), Spanish National Research Council (CSIC), 28033 Madrid, SpainEduardo Torroja Institute for Construction Sciences (IETcc), Spanish National Research Council (CSIC), 28033 Madrid, SpainTECNALIA, Basque Research and Technology Alliance (BRTA), Astondo Bidea, Edificio 700, Parque Tecnológico de Bizkaia, 48160 Derio, SpainConstruction and demolition waste (CDW) currently constitutes a waste stream with growing potential use as a secondary raw material in the manufacture of eco-cements that offer smaller carbon footprints and less clinker content than conventional cements. This study analyzes the physical and mechanical properties of two different cement types, ordinary Portland cement (OPC) and calcium sulfoaluminate (CSA) cement, and the synergy between them. These cements are manufactured with different types of CDW (fine fractions of concrete, glass and gypsum) and are intended for new technological applications in the construction sector. This paper addresses the chemical, physical, and mineralogical characterization of the starting materials, as well as the physical (water demand, setting time, soundness, water absorption by capillary action, heat of hydration, and microporosity) and mechanical behavior of the 11 cements selected, including the two reference cements (OPC and commercial CSA). From the analyses obtained, it should be noted that the addition of CDW to the cement matrix does not modify the amount of water by capillarity with respect to OPC cement, except for Labo CSA cement which increases by 15.7%, the calorimetric behavior of the mortars is different depending on the type of ternary and hybrid cement, and the mechanical resistance of the analysed mortars decreases. The results obtained show the favorable behavior of the ternary and hybrid cements made with this CDW. Despite the variations observed in the different types of cement, they all comply with the current standards applicable to commercial cements and open up a new opportunity to improve sustainability in the construction sector.https://www.mdpi.com/1996-1944/16/8/3093CDWsternary eco-cementsCSA eco-cementssynergy of hybrid cementscharacterizationphysical properties |
| spellingShingle | Moisés Frías Manuel Monasterio Jaime Moreno-Juez Physical and Mechanical Behavior of New Ternary and Hybrid Eco-Cements Made from Construction and Demolition Waste Materials CDWs ternary eco-cements CSA eco-cements synergy of hybrid cements characterization physical properties |
| title | Physical and Mechanical Behavior of New Ternary and Hybrid Eco-Cements Made from Construction and Demolition Waste |
| title_full | Physical and Mechanical Behavior of New Ternary and Hybrid Eco-Cements Made from Construction and Demolition Waste |
| title_fullStr | Physical and Mechanical Behavior of New Ternary and Hybrid Eco-Cements Made from Construction and Demolition Waste |
| title_full_unstemmed | Physical and Mechanical Behavior of New Ternary and Hybrid Eco-Cements Made from Construction and Demolition Waste |
| title_short | Physical and Mechanical Behavior of New Ternary and Hybrid Eco-Cements Made from Construction and Demolition Waste |
| title_sort | physical and mechanical behavior of new ternary and hybrid eco cements made from construction and demolition waste |
| topic | CDWs ternary eco-cements CSA eco-cements synergy of hybrid cements characterization physical properties |
| url | https://www.mdpi.com/1996-1944/16/8/3093 |
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