Utilization of rock dust as cement replacement in cement composites: An alternative approach to sustainable mortar and concrete productions

Dobiszewska, Magdalena; Bagcal, Orlando R.; Beycioğlu, Ahmet; Goulias, Dimitrios; Köksal, Fuat; Płomiński, Błażej; Ürünveren, Hüsamettin

doi:10.1016/j.jobe.2023.106180

Cited by 37 publications

(12 citation statements)

References 191 publications

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“…Modern glass formulations doped with specific elements or compounds can exhibit remarkable optical characteristics, making them indispensable in advanced technological applications ranging from optoelectronics to photonics. [3][4][5][6] Radioactive isotopes and related technologies significantly influence modern human life. Naturally occurring isotopes serve as a source of radiation with various applications.…”

Section: Introductionmentioning

confidence: 99%

Eco-friendly repurposing of by-pass waste for optics and radiation protection: addressing hazardous material challenges

Zakaly,

Hashim,

Issa

et al. 2024

Mater. Adv.

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Section: Introductionmentioning

confidence: 99%

Eco-friendly repurposing of by-pass waste for optics and radiation protection: addressing hazardous material challenges

Zakaly,

Hashim,

Issa

et al. 2024

Mater. Adv.

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“…Cement plays an indispensable role in the construction industry and is one of the main materials for buildings [1]. Data indicate that the global annual production of cement was as high as 4 billion tons [2]; in particular, the annual production of cement in China accounted for 51.17% of the global annual production [3]. It was projected that by 2050, the annual production of cement will increase to about 6 billion tons [4].…”

Section: Introductionmentioning

confidence: 99%

Utilization of Copper–Molybdenum Tailings to Enhance the Compressive Strength of Alkali-Activated Slag-Fly Ash System

Wang,

Gu,

Wang

et al. 2024

Buildings

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Utilizing a variety of solid wastes to prepare alkali-activated cementitious materials is one of the principal trends in the development of cementitious materials. Commonly used alkali activation precursors such as granulated blast furnace slag (GBFS) and fly ash (FA) will be less available due to resource pressures. Supply limitation is an important reason to research alternative precursors. To realize the high value-added utilization of copper–molybdenum tailings (CMTs), this study adopted the modified sodium silicate solution as an alkaline activator to activate GBFS-FA-CMTs cementitious system to prepare alkali-activated cementitious materials. The influence of CMTs content on the compressive strength of GBFS-FA-CMTs cementitious system was analyzed, and the mechanism of GBFS-FA-CMTs cementitious system was also analyzed through hydration product types, physical phase composition, and microscopic morphology. The results indicated that a paste with the incorporation of CMTs, S50F30C20 (50% GBFS, 30% FA, 20% CMTs), achieved the highest compressive strength of 79.14 MPa, which was due to the filling effect of the CMTs and the degree of participation in the reaction. Pastes with different contents of CMTs, while maintaining a constant CBFS content, exhibited similar strength development. Excessive amounts of CMTs could result in reduced compressive strength. Microstructural analysis revealed that the hydration products were structurally altered by the addition of CMTs. In addition to ettringite, quartz, C(-N)-S-H gel, and calcite, gaylussite was also formed; moreover, the mass of chemically bound water increased, and the microstructure of reaction products became denser. An excess of CMTs may restrict the growth of the hydration gel, leading to more microstructural defects. The study suggests that CMTs could enhance the compressive strength of hardened paste within an alkali-activated slag-fly ash system, possibly due to a filling effect and participation in the chemical reaction. This research confirms the feasibility of using CMTs in alkali-activated cementitious materials.

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“…Concrete is a composite material made up of cement, water, fine and coarse aggregates, and admixtures. It is the second most widely used material globally after water, with an annual consumption exceeding 12 billion tons [1,2]. Its popularity can be attributed to the low cost of materials, construction, and maintenance, as well as its high performance and longevity [3].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the use of cobalt and nickel based nanoalloys as cement mortar additives

Karaduman,

Pişkin

2024

Mater. Res. Express

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The usage potential of chemical and green synthesized cobalt (Co) and nickel (Ni) nanoalloys (CoNiNAs) as mortar additives at different ratios was evaluated. The CoCl2 and NiCl2 metallic salt solutions were mixed in volume ratios of 1-1, 1-2, and 2-1 and reduced with NaBH4 and St. John's Wort aqueous extract, respectively. The obtained Co-Ni based complex nanoalloys were analyzed by Ultraviolet-Visible Spectroscopy (UV-Vis), X-Ray Diffraction Analysis (XRD), Field Emission Scanning Electron Microscopy (FE-SEM), Fourier Transform Infrared Spectroscopy (FT-IR), and Dynamic Light Scattering Particle Size Analyzer (DLS). The effect of CoNiNAs was investigated based on the amount used in mortar, flexural and compressive strengths of mortar, setting time retarder properties, and carbonation depth measurements of mortars and nanoalloy form based on whether they were solid (chemical synthesise) or liquid (green synthesise). The results revealed that the chemical synthesized CoNiNAs were amorphous metal-metal-oxide complexes with small spherical particles and a low dispersity index, whereas the green synthesized complexes had a more crystalline structure and smaller sizes. The mortar properties were affected by Co and Ni synthesis ratios and addition amounts. The incorporation of CoNiNAs led to an increase in the setting times of mortar. Furthermore, the ‘CN’ 2% sample exhibited the highest compression (49.10±1.19 MPa) and flexural (8.19±0.20 MPa) strengths. In addition, the ‘CN2’ 1% sample exhibited the lowest carbonation depth (2.95±0.35 mm) compared to other samples. Overall, mortars with CoNiNAs additives may be used in high temperature environments, and long shipment times require remote locations due to setting time retarder effect without losing necessary physical properties.

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Utilization of rock dust as cement replacement in cement composites: An alternative approach to sustainable mortar and concrete productions

Cited by 37 publications

References 191 publications

Eco-friendly repurposing of by-pass waste for optics and radiation protection: addressing hazardous material challenges

Eco-friendly repurposing of by-pass waste for optics and radiation protection: addressing hazardous material challenges

Utilization of Copper–Molybdenum Tailings to Enhance the Compressive Strength of Alkali-Activated Slag-Fly Ash System

Investigation of the use of cobalt and nickel based nanoalloys as cement mortar additives

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