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Open AccessArticle

Eco-Efficient Hybrid Cements: Pozzolanic, Mechanical and Abrasion Properties

Materials Sciences and Engineering Department-IAAB, University Carlos III of Madrid, Avda. Universidad 30, Leganés, 28911 Madrid, Spain
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Appl. Sci. 2020, 10(24), 8986; https://doi.org/10.3390/app10248986
Received: 26 November 2020 / Revised: 10 December 2020 / Accepted: 12 December 2020 / Published: 16 December 2020
(This article belongs to the Special Issue Recycling Waste in Construction Materials)
One of the most polluting industries is the cement industry and, for this reason, alternative lines of research recommend the use of substitute materials for traditional Portland cement. This study proposes the use of industrial (slag and fly ash) and ceramic wastes for the total or partial replacement of Portland cement in the manufacturing of both alkaline-activated and hybrid cements. To carry out this study and evaluate the behavior of the proposed materials, different mortars were manufactured: Portland cement (CEM I), two alkaline-activated slag systems and six hybrid systems, with an 80–20% waste-to-Portland-cement ratio for all the proposed wastes. An assessment of the pozzolanic activity was carried out for the different materials. The behavior of all the systems regarding mechanical resistance and durability to abrasion was studied. All the proposed materials, especially those with ceramic wastes, showed pozzolanic activity and suitable characteristics for use in the manufacturing of alternative cements. The mortar made of slag activated with waterglass presented the highest mechanical strength and lowest porosity, but the hybrid materials presented competitive results. After being subjected to the Böhme abrasion test, their effectiveness as substitutes for Portland cement is reiterated, some of them improving their durability to wear. View Full-Text
Keywords: abrasion behavior; alkali-activated materials; hybrid materials abrasion behavior; alkali-activated materials; hybrid materials
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MDPI and ACS Style

Shagñay, S.; Ramón, L.; Fernández-Álvarez, M.; Bautista, A.; Velasco, F.; Torres-Carrasco, M. Eco-Efficient Hybrid Cements: Pozzolanic, Mechanical and Abrasion Properties. Appl. Sci. 2020, 10, 8986. https://doi.org/10.3390/app10248986

AMA Style

Shagñay S, Ramón L, Fernández-Álvarez M, Bautista A, Velasco F, Torres-Carrasco M. Eco-Efficient Hybrid Cements: Pozzolanic, Mechanical and Abrasion Properties. Applied Sciences. 2020; 10(24):8986. https://doi.org/10.3390/app10248986

Chicago/Turabian Style

Shagñay, Segundo; Ramón, Leticia; Fernández-Álvarez, María; Bautista, Asunción; Velasco, Francisco; Torres-Carrasco, Manuel. 2020. "Eco-Efficient Hybrid Cements: Pozzolanic, Mechanical and Abrasion Properties" Appl. Sci. 10, no. 24: 8986. https://doi.org/10.3390/app10248986

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