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2023 | Buch

New-Generation Cement-Based Nanocomposites

verfasst von: Siqi Ding, Xinyue Wang, Baoguo Han

Verlag: Springer Nature Singapore

Enthalten in: Springer Professional "Wirtschaft+Technik" , Springer Professional "Technik" , Springer Professional "Wirtschaft"

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Über dieses Buch

The subject of this book is civil engineering material and nanotechnology. Recent advances in nano-synthetic technologies and nanocomposite technologies as well as nano-surface modification technologies are driving the progressive exploitation of advanced nanomaterials. In view of their unique structures and mutual synergy, these advanced nanomaterials are expected to alleviate the dispersion issue of traditional nanomaterials in cement-based composites, improve their nanocomposite effectiveness and efficiency as well as impart new properties and functionalities to cement-based composites, thus boosting the development of new-generation cement-based nanocomposites. Based on the authors’ latest research accumulations and achievements, this book presents the fundamentals, fabrications, characterizations, performances and applications of the new-generation cement-based nanocomposites. It features numerous illustrations and data graphs as well as summary tables to visually describe the topics. This book is dedicated to students, researchers, scientists and engineers in the field of civil engineering materials and nanotechnology. The readers can find information on progress of civil engineering materials and nanotechnologies, cutting-edge research ideas and findings and practical guidance for developing sustainable and multifunctional cement-based nanocomposites.

Inhaltsverzeichnis

Frontmatter

Chapter 1. Fundamentals of New-Generation Cement-Based Nanocomposites

Abstract

Nano science and technology can help understand and control the structures and properties of cement-based composites more fundamentally. Incorporating nanomaterials as fillers is commonly used approach for tailoring the cement-based composites via nano science and technology. The manipulation of nanomaterials on cement-based composites strongly depends on the compositions, structures, processing and properties of nanomaterials as well as the composite methods of nanomaterials with cement-based composites. Recent advances in nano-synthetic technologies, nanocomposite technologies and nano-surface modification technologies are driving the progressive exploitation of advanced nanocomposites. In view of their unique structures and mutual synergy, these advanced nanocomposites are expected to alleviate the dispersion issue of traditional nanomaterials in cement-based composites, improve their nanocomposite effectiveness and efficiency, and impart new properties and functionalities to cement-based composites, thus boosting the development of new-generation cement-based nanocomposites.

Siqi Ding, Xinyue Wang, Baoguo Han

Chapter 2. New-Generation Cement-Based Nanocomposites with Helical CNT

Abstract

Helical CNT possesses excellent mechanical, electrical, and thermal properties as well as high chemical stability and large aspect ratio similar to ordinary CNT. It also has unique chiral structure, which is beneficial to enhancing the dielectric properties of CNT. Therefore, as a nanoscale metamaterial, helical CNT shows great potential for improving/modifying the properties/performances of cement-based composites. The cement-based nanocomposites with helical CNT have enhanced static and dynamic mechanical properties due to the helical CNT modification effect on the structures of cement-based composites. Especially, they exhibit excellent electromagnetic shielding and absorption properties because of the unique chiral structures as well as extensive distribution of helical CNT, thus presenting excellent application prospects in electromagnetic protection and control of military, nuclear power plant and extraterrestrial infrastructures.

Siqi Ding, Xinyue Wang, Baoguo Han

Chapter 3. New-Generation Cement-Based Nanocomposites with Nickel-Coated CNT

Abstract

Nickel-coated CNT combines excellent mechanical properties, high aspect ratio, light weight, and unique hollow tubular structure of CNT with good wetting and ferromagnetic properties of nanoscale nickel particles, thus increasing the activation point on CNT surface and modifying the dielectric properties of CNT. Therefore, nickel-coated CNT is a promising nanofiber for improving/modifying the properties of cement-based composites. The cement-based nanocomposites with nickel-coated CNT feature the enhanced static and dynamic mechanical properties due to the high dispersibility of nickel-coated CNT, the strong bonding between nickel-coated CNT and cement-based composites as well as the modification effect of nickel-coated CNT on the structures of cement-based composites. They also exhibit remarkable electromagnetic shielding and absorption properties because of the synergistic effect of CNT with high dielectric properties and nanoscale nickel particles with ferromagnetic properties as well as extensive distribution of nickel-coated CNT. The cement-based nanocomposites nickel-coated CNT present broad application prospects in high-rise buildings, long-span bridges, and other large-scale infrastructures as well as military, nuclear power plant, and extraterrestrial infrastructures.

Siqi Ding, Xinyue Wang, Baoguo Han

Chapter 4. New-Generation Cement-Based Nanocomposites with Nano SiO2-Coated TiO2

Abstract

Nano SiO₂-coated TiO₂ combines the excellent mechanical and functional properties of nano TiO₂ with the pozzolanic activity of nano SiO₂. Owing to the modification of the interface of TiO₂ by coating with nano SiO₂, Ti–O–Si bonds can be formed at TiO₂ surface. Such chemical bonds can bring more negative charges at the surface of NT, which are conducive to its dispersion in water due to electrostatic repulsion. Therefore, nano SiO₂-coated TiO₂ is a kind of highly dispersed nanoparticle with core–shell structure. The cement-based nanocomposites incorporated with nano SiO₂-coated TiO₂ demonstrate very strong static and dynamic mechanical properties as well as improved bond properties due to the high dispersibility and the modification effect of nano SiO₂-coated TiO₂ on the structures of cement-based composites. They also show good electromagnetic shielding and absorption properties because of the high dielectric constant of nano SiO₂-coated TiO₂. Especially, the cement-based nanocomposites incorporated with nano SiO₂-coated TiO₂ exhibit notably anti-corrosion properties because of the antibacterial, self-cleaning, and photocatalytic abilities of nano SiO₂-coated TiO₂, indicating their considerable potential application in sewage, marine, health care, and education infrastructures.

Siqi Ding, Xinyue Wang, Baoguo Han

Chapter 5. New-Generation Cement-Based Nanocomposites with Electrostatic Self-Assembly NCB/CNT

Abstract

NCB and CNT are representative 0D and 1D carbon nanomaterials, possessing the advantages of carbon materials such as light weight, stability, good electrical and thermal conductivity. These two carbon nanomaterials can be synthesized into a “grape bunch structure” through electrostatic self-assembly. This unique structure can not only provide the morphological effects of the two-dimensionality carbon nanomaterials, but also improve the dispersibility of two carbon nanomaterials. Therefore, electrostatic self-assembly NCB/CNT, as a kind of low-density multifunctional nanomaterials, allows large-scale preparation of cement-based nanocomposites. The cement-based nanocomposites with NCB/CNT feature strong self-sensing properties, high electrical conductivity, and excellent electromagnetic properties at low content of NCB/CNT because of synergistic composition, morphological effect, high dispersivity, and low density of NCB/CNT. Therefore, they have great potential for structural modal identification and damage detection in structural health monitoring, as well as excellent application prospects in oil well infrastructures.

Siqi Ding, Xinyue Wang, Baoguo Han

Chapter 6. New-Generation Cement-Based Nanocomposites with Electrostatic Self-Assembly TiO2/CNT

Abstract

Electrostatic self-assembly TiO₂/CNT combines excellent physical, chemical properties, and morphological effects of 1D CNT with 0D TiO₂ through electrostatic self-assembly. It therefore possesses multifunctional and spatial morphology effects in modifying cement-based composites. Moreover, TiO₂ nanoparticles exert electrostatic exclusion effect on CNT, which improves the modification efficiency of CNT on cement-based composites’ electrical properties. Thanks to these merits, the cement-based nanocomposites with TiO₂/CNT show good self-sensing properties to stress/strain/temperature, high electrical conductivity, and excellent electromagnetic properties on the promise of good mechanical properties, presenting great potential in developing multifunctional/smart infrastructures.

Siqi Ding, Xinyue Wang, Baoguo Han

Chapter 7. New-Generation Cement-Based Nanocomposites with Electrostatic Self-Assembly NCB/GNP

Abstract

GNP is a kind of 2D carbon nanomaterial with excellent mechanical, electrical, magnetic, and thermal properties. The combination of GNP with 0D nanomaterial, NCB via electrostatic self-assembly to synthesize 0D/2D composite filler can not only improve the dispersibility of both NCB and GNP but also exert short-range and long-range composite effects of NCB/GNP, i.e., the synergistic effects, which cannot be achieved by NCB and GNP alone. Therefore, NCB/GNP is a low-density and highly-dispersed composite filler for the mass production of multifunctional/smart cement-based nanocomposites. The cement-based nanocomposites with NCB/GNP present the characteristics of high strength, decreased elastic modulus, and increased toughness, which well meets the high requirements of oil well infrastructures. Meanwhile, the presence of NCB/GNP endows cement-based nanocomposites with outstanding self-sensing, electrically conductive, and electromagnetic shielding and absorption properties, which enables cement-based nanocomposites with NCB/GNP to be used for structural health monitoring and electromagnetic protection of infrastructures.

Siqi Ding, Xinyue Wang, Baoguo Han

Chapter 8. New-Generation Cement-Based Nanocomposites with In-Situ Grown CNT on Cement

Abstract

In-situ synthesized CNT on cement (CNT@Cem) can alleviate the CNT dispersion issue and enhance its composite efficiency and effectiveness on the modification of cement-based composites. Due to the inherently containing silicate and ferrite phases, microscale cement particles act as effective substrate-bound catalysts, facilitating high-yield and strongly anchored CNT growth. The hierarchically structured CNT@Cem integrates the dual functions of reinforcement and conduction Incorporating CNT@Cem is effective in tailoring the electrical microstructures to enhance the electrical conductivity and self-sensing sensitivity of cement-based composites. The cement-based nanocomposites with CNT@Cem demonstrate excellent repeatability and stability, outstanding adaptability to various applied conditions, and fast response and recovery. They can be used to develop smart track slab for axle counting and speed detection, and have great potential for long-term, wide-distribution, and low-cost monitoring of high-speed rail infrastructures.

Siqi Ding, Xinyue Wang, Baoguo Han

Chapter 9. New-Generation Cement-Based Nanocomposites with In-Situ Grown CNT on CF

Abstract

Hierarchically structured carbon fiber-carbon nanotube composite filler (CNT@CF) can not only alleviate the CNT aggregation by transferring the nanoscale dispersion into the microdomain, but also significantly improve the interfacial bonding between CNT@CF and matrix. Due to the synergic and spatially morphological effects of CNT@CF, i.e., the formation of widely distributed multiscale reinforcement networks, cement-based nanocomposites with CNT@CF exhibit high mechanical properties and electrical conductivity as well as excellent self-sensing performances, particularly enhanced sensing repeatability. The smart system for crack development monitoring developed by integrated cement-based nanocomposites with CNT@CF into a full-scale maglev girder demonstrates high sensitivity and fidelity to capture the initiation of cracks/damage, as well as progressive and sudden damage events until complete failure of the maglev girder, indicating its considerable potential for structural health monitoring of infrastructures.

Siqi Ding, Xinyue Wang, Baoguo Han

Chapter 10. Future Development and Challenges of New-Generation Cement-Based Nanocomposites

Abstract

Nano science and nanotechnology are supposed to be the endless frontier in the field of cement-based composites. The advances of nano science and nanotechnology have injected new vitality into cement-based composites and will revolutionize the advancement of cement-based composites, i.e., the emergence and development of new-generation cement-based nanocomposite. Although the development of the industry of cement-based nanocomposites is increasing at an alarming rate, it has both opportunities and risks. The continuing development and in-depth discovery of new-generation cement-based nanocomposites should be considered. The treats to global environment, and health also need be analyzed when pushing forward new-generation cement-based nanocomposites for industrialization.

Siqi Ding, Xinyue Wang, Baoguo Han

Titel: New-Generation Cement-Based Nanocomposites
verfasst von: Siqi Ding
Xinyue Wang
Baoguo Han
Verlag: Springer Nature Singapore
Electronic ISBN: 978-981-9923-06-9
Print ISBN: 978-981-9923-05-2
DOI: https://doi.org/10.1007/978-981-99-2306-9

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