Nanomaterial-Reinforced Portland-Cement-Based Materials: A Review

Franco-Luján, Víctor Alberto; Montejo‐Alvaro, F.; Ramírez-Arellanes, Samuel; Cruz-Martínez, H.; Medina, Dora I.

doi:10.3390/nano13081383

Cited by 9 publications

(3 citation statements)

References 114 publications

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“…However, findings from various researchers [24,[67][68][69] indicate that the relevant delay may be attributed to the nucleation problem of C-S-H products rather than the dissolution problem. Research conducted by FrancoLujan et al [70] showed that the dynamic interaction between dissolution and nucleation could be significant. On the other hand, mortars with green synthesized NAs did not show broad delay times, and setting times were closer to the reference results, regardless of the sample type.…”

Section: Mortar Strength Setting Times and Durability Studiesmentioning

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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Section: Mortar Strength Setting Times and Durability Studiesmentioning

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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“…Although this goes beyond the focus of this article, it is worth discussing due to the concerns expressed by both technical and academic communities. Two research topics can be highlighted: (i) Substituting a percentage of conventional cement with other materials, such as nanomaterials, to reduce CO 2 emissions by decreasing the production of Portland cement and enhancing the resilience of Portland cement-based concretes against hazards such as fire, earthquakes, and aggressive industrial environments (e.g., [46]; (ii) Making efforts to properly rehabilitate existing reinforced concrete (RC) buildings in terms of seismic performance (e.g., [47,48]) and considering the use of more efficient and thinner concrete jackets (e.g., [49][50][51][52]).…”

Section: Approach Energy Policy Documentsmentioning

confidence: 99%

Residential Energy Consumption-A Computational Bibliometric Analysis

Quintana

Muñoz-Repiso

2023

Buildings

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This paper conducted a systematic literature review (SLR) of peer-review documents focused on residential energy consumption. The main finding of this SLR derived from its computational implementation, filling a gap in the available literature. The paper had two main objectives: (i) the SLR itself; and (ii) to systematically identify the main policy measures oriented at reducing energy consumption recommended by the available literature and its related greenhouses gas emissions. A significant lack of a connection between scientific fields was identified. The fields of energy, engineering and environmental science are those that have addressed these topics the most. The sub-field with the largest presence is energy, with 29.5%, followed by engineering (23.9%) and the environment (21.3%). It is recommended that this gap be bridged because many of the main political measures in force to reduce residential energy consumption come from economics and need to be explored from a social science perspective to choose those measures that are more cost-effective.

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“…Knowledge related to these aspects is critical, as the amount of nano-admixtures used for radiation shielding purposes usually exceeds the optimal value for ensuring proper mechanical and durability performance of cement-based composites. It is widely agreed that, typically, the optimal content of nanoparticles lies within the range of 0.5 to 5% mass of binder [ 44 , 45 , 46 ]. However, for radiation shielding applications, the amount of a single nano-admixture frequently ranges between 3 and 10 wt% [ 8 , 10 , 12 , 13 , 14 , 17 , 47 ], therefore, higher replacement rates of a binder with nanoparticles might lead to undesirable alterations in the hydration process of cementitious systems.…”

Section: Introductionmentioning

confidence: 99%

Functional Bi2O3/Gd2O3 Silica-Coated Structures for Improvement of Early Age and Radiation Shielding Performance of Cement Pastes

Cendrowski,

Federowicz,

Techman

et al. 2024

Nanomaterials

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This study presents a new approach towards the production of sol-gel silica-coated Bi2O3/Gd2O3 cement additives towards the improvement of early mechanical performance and radiation attenuation. Two types of silica coatings, which varied in synthesis method and morphology, were used to coat Bi2O3/Gd2O3 structures and evaluated as a cement filler in Portland cement pastes. Isothermal calorimetry studies and early strength evaluations confirmed that both proposed coating types can overcome retarded cement hydration process, attributed to Bi2O3 presence, resulting in improved one day compressive strength by 300% and 251% (depending on coating method) when compared to paste containing pristine Bi2O3 and Gd2O3 particles. Moreover, depending on the type of chosen coating type, various rheological performances of cement pastes can be achieved. Thanks to the proposed combination of materials, both gamma-rays and slow neutron attenuation in cement pastes can be simultaneously improved. The introduction of silica coating resulted in an increment of the gamma-ray and neutron shielding thanks to the increased probability of radiation interaction. Along with the positive early age effects of the synthesized structures, the 28 day mechanical performance of cement pastes was not suppressed, and was found to be comparable to that of the control specimen. As an outcome, silica-coated structures can be successfully used in radiation-shielding cement-based composites, e.g. with demanding early age performances.

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Nanomaterial-Reinforced Portland-Cement-Based Materials: A Review

Cited by 9 publications

References 114 publications

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

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

Residential Energy Consumption-A Computational Bibliometric Analysis

Functional Bi2O3/Gd2O3 Silica-Coated Structures for Improvement of Early Age and Radiation Shielding Performance of Cement Pastes

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