Compressive strength of concrete reinforced by TiO2 nanoparticles

Yu, Xuemei; Kang, Shao‐Bo; Long, Xu

doi:10.1063/1.5075659

Cited by 30 publications

(17 citation statements)

References 4 publications

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“…The self-compacting concrete with nano-TiO 2 registered a microstructure more refined, which enhanced the resistance to mechanic failures. Other researchers, Yu et al [102] reported the improvement of concrete microstructure incorporating nano-TiO 2 , which increased its mechanical strength. The TiO 2 nanoparticles catalyze the decomposition of harmful gases in the air.…”

Section: Nanomaterials In Cement-based Materialsmentioning

confidence: 99%

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Recent Progress in Nanomaterials for Modern Concrete Infrastructure: Advantages and Challenges

et al. 2019

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Modern concrete infrastructure requires structural components with higher mechanical strength and greater durability. A solution is the addition of nanomaterials to cement-based materials, which can enhance their mechanical properties. Some such nanomaterials include nano-silica (nano-SiO2), nano-alumina (nano-Al2O3), nano-ferric oxide (nano-Fe2O3), nano-titanium oxide (nano-TiO2), carbon nanotubes (CNTs), graphene and graphene oxide. These nanomaterials can be added to cement with other reinforcement materials such as steel fibers, glass, rice hull powder and fly ash. Optimal dosages of these materials can improve the compressive, tensile and flexural strength of cement-based materials, as well as their water absorption and workability. The use of these nanomaterials can enhance the performance and life cycle of concrete infrastructures. This review presents recent researches about the main effects on performance of cement-based composites caused by the incorporation of nanomaterials. The nanomaterials could decrease the cement porosity, generating a denser interfacial transition zone. In addition, nanomaterials reinforced cement can allow the construction of high-strength concrete structures with greater durability, which will decrease the maintenance requirements or early replacement. Also, the incorporation of nano-TiO2 and CNTs in cementitious matrices can provide concrete structures with self-cleaning and self-sensing abilities. These advantages could help in the photocatalytic decomposition of pollutants and structural health monitoring of the concrete structures. The nanomaterials have a great potential for applications in smart infrastructure based on high-strength concrete structures.

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Section: Nanomaterials In Cement-based Materialsmentioning

confidence: 99%

“…In addition, the concrete with nano-TiO 2 achieved a maximum compressive strength that was 7% higher in comparison with the non-added nanoparticle concrete. In addition, Yu et al [102] investigated the changes of temperatures that can induce cracks and accelerate the hydration reaction.…”

Section: Nanomaterials In Cement-based Materialsmentioning

confidence: 99%

Recent Progress in Nanomaterials for Modern Concrete Infrastructure: Advantages and Challenges

et al. 2019

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“…Different types of manufactured nanomaterials can have advantageous utilization in construction, including high-resolution sensing/actuating devices, superior structural properties, and functional coatings and paints [35][36][37][38]. Some utilizations of nanomaterials in the construction industry are presented in Table 1 [39][40][41][42][43][44][45]. 3 Titania nanoparticles Concrete Self-cleaning, increased degree of hydration [41] 4…”

Section: Introductionmentioning

confidence: 99%

“…Some utilizations of nanomaterials in the construction industry are presented in Table 1 [39][40][41][42][43][44][45]. 3 Titania nanoparticles Concrete Self-cleaning, increased degree of hydration [41] 4…”

Section: Introductionmentioning

confidence: 99%

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

2021

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At present, nanotechnology is a significant research area in different countries, owing to its immense ability along with its economic impact. Nanotechnology is the scientific study, development, manufacturing, and processing of structures and materials on a nanoscale level. It has tremendous application in different industries such as construction. This study discusses the various progressive uses of nanomaterials in concrete, as well as their related health risks and environmental impacts. Nanomaterials such as nanosilica, nano-TiO2, carbon nanotubes (CNTs), ferric oxides, polycarboxylates, and nanocellulose have the capability to increase the durability of buildings by improving their mechanical and thermal properties. This could cause an indirect reduction in energy usage and total expenses in the concrete industry. However, due to the uncertainties and irregularities in size, shape, and chemical compositions, some nanosized materials might have harmful effects on the environment and human health. Acknowledgement of the possible beneficial impacts and inadvertent dangers of these nanosized materials to the environment will be extremely important when pursuing progress in the upcoming years. This research paper is expected to bring proper attention to the probable effects of construction waste, together with the importance of proper regulations, on the final disposal of the construction waste.

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“…В связи, с чем встает необходимость корректировки модифицирующих компонентов для TiO2, при которых происходит увеличения его активности в УФ-облучении. Известны способы [12][13][14][15][16] повышения эффективности TiO2 за счет обработки его поверхности оксидом кремния, а так как SiO2 присутствует в составе минеральных вяжущих, это дополнительно будет способствовать усилению фотокаталитической активности.…”

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The Use of Photocatalytic Concretes in Road Construction

Shestakov

Alekseeva

Polosina

2021

Bulletin of Belgorod State Technological University Named After. V. G. Shukhov

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The article discusses the possibility of reducing the atmospheric environmental load of highways by applying compositions with photocatalytic properties to acoustic screens. It is found that the amount of nitrogen oxides on the territory of the city of Moscow exceeds the MPC norms. Therefore, a potential way to reduce the level of the average daily and maximum one-time MPC of nitrogen oxides is proposed, when using coatings of traditional acoustic screens with photocatalytic compositions. Titanium dioxide in anatase form is considered as a photocatalytic agent. To reduce the density and increase the porosity of cement compositions, a cellulosic suspension obtained by saturation in an aqueous medium with subsequent homogenization is introduced. The effect of cellulose in the considered cement systems in combination with a photocatalytic agent has been investigated. By the method of mathematical planning, a two-factor compositional experiment is compiled. In result, the degrees of influence of titanium dioxide and cellulose additives on the strength, density and water absorption of the composites under study are established. The study of the structure of the obtained composites shows that TiO2 is mainly located on the surface of cellulose fibers, which theoretically increases the useful surface for photocatalytic reactions and, as a consequence, the final efficiency of the compositions.

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Compressive strength of concrete reinforced by TiO2 nanoparticles

Cited by 30 publications

References 4 publications

Recent Progress in Nanomaterials for Modern Concrete Infrastructure: Advantages and Challenges

Recent Progress in Nanomaterials for Modern Concrete Infrastructure: Advantages and Challenges

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

The Use of Photocatalytic Concretes in Road Construction

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