4.7 Article

Graphene oxide coated fly ash for reinforcing dynamic tensile behaviours of cementitious composites

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Construction & Building Technology

Mechanism and experiment of self-stress grouting reinforcement for fractured rock mass of underground engineering

Jinpeng Zhang et al.

Summary: This paper proposes a new self-stress grouting reinforcement method for fractured rock mass. The method is shown to increase the shear strength at the slurry-rock interface and improve the reinforcement effect on the fractured rock mass through theoretical analysis and experiments.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2023)

Article Construction & Building Technology

Graphene oxide's regenerative acidity and its effects on the hydration of Type II Portland Cement

Taimur Mazhar Sheikh et al.

Summary: Incorporation of graphene oxide (GO) in Portland cement has been shown to improve hydration process, strength, and durability. This study synthesized GO with varying hydroxyl group amounts to investigate its effects on an environment-friendly cement. The high-hydroxyl GO (HGO) was found to form a hydronium layer that accelerates early-age hydration, while low-hydroxyl GO (XGO) "locks" certain components, inhibiting their propagation in the cement microstructure. HGO-concrete exhibited significantly improved workability, compressive strength, and flexural strength, while XGO-concrete showed reduced workability and smaller strength improvements.

CONSTRUCTION AND BUILDING MATERIALS (2023)

Article Construction & Building Technology

Cemented waste rock backfill enhancement via fly ash-graphene oxide hybrid under different particle size distribution

Yuan Gao et al.

Summary: This study utilized industrial graphene oxide (GO) and fly ash (FA) to create a high-performance, low-cost, and environmentally-friendly material for backfill. The GO-FA hybrid significantly improved the microstructural matrix of hydrated cement, leading to a significantly reinforced compressive strength of the CWRB specimens. Compared to traditional backfill materials, the addition of 0.008 wt% industrial GO assisted FA in reducing cement consumption by over 20% and improving engineering properties by 2.6-53.6% at the same time.

CONSTRUCTION AND BUILDING MATERIALS (2023)

Article Construction & Building Technology

Thermal conductivity of cementitious composites reinforced with graphene-based materials: An integrated approach combining machine learning with computational micromechanics

Arman Montazerian et al.

Summary: Graphene-based materials (GMs) have great potential in improving the thermal conductivity of cementitious composites. This study combines machine learning (ML) and computational micromechanics models (CMMs) to analyze the thermal conductivity of GM-reinforced cementitious composites (GRCCs). The results indicate that the volume fraction of GMs is the most influential factor in predicting the thermal conductivity of GRCCs, followed by their aspect ratio.

CONSTRUCTION AND BUILDING MATERIALS (2023)

Article Materials Science, Multidisciplinary

Graphene oxide-coated fly ash for high performance and low-carbon cementitious composites

Zhangjianing Cheng et al.

Summary: Graphene oxide (GO) offers a new approach to reduce carbon footprint in the construction industry and improve cementitious composites. However, the limited dispersion of GO has hindered its practical application. In this study, a coating method was used to successfully disperse GO on fly ash particles, resulting in improved workability, mechanical strength, and impermeability of the modified cementitious slurry.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2023)

Article Materials Science, Ceramics

Nucleation and growth of brushite crystals on the graphene sheets applicable in bone cement

Hassan Nosrati et al.

Summary: The addition of graphene enhances the mechanical and biological properties of calcium phosphates. This study investigates the nucleation and growth mechanism of brushite crystals on graphene sheets. The results show that brushite crystals can grow on specific crystal planes with the presence of graphene, forming plate-shaped particles. Moreover, increasing the graphene content can shorten the setting time and improve the mechanical properties of the material.

BOLETIN DE LA SOCIEDAD ESPANOLA DE CERAMICA Y VIDRIO (2022)

Article Construction & Building Technology

Effects of carbon nanotube dosage and aggregate size distribution on mechanical property and microstructure of cemented rockfill

Jiangyu Wu et al.

Summary: This paper investigates the mechanical properties and microstructure of cemented rockfill reinforced by carbon nanotubes (CNTs) and fractal aggregates. The study reveals the strengthening and deterioration mechanisms of CNT dosage on cemented rockfill, as well as the influence of aggregate size distribution.

CEMENT & CONCRETE COMPOSITES (2022)

Article Engineering, Multidisciplinary

Graphene oxide-reinforced thin shells for high-performance, lightweight cement composites

Wei Wang et al.

Summary: In this study, graphene oxide (GO) was used to reinforce and modify the interface of lightweight cement composites. The results showed that GO significantly reduced high-porosity regions between the cement matrix and polymer scaffold, leading to the formation of low-density calcium-silicate-hydrates. The GO-reinforced composites exhibited significantly increased compressive strength and specific energy absorption. This study enhances our understanding of the reinforcing mechanism of GO in thin-shell structures and demonstrates its effectiveness in improving the performance of lightweight cementitious composites.

COMPOSITES PART B-ENGINEERING (2022)

Article Materials Science, Multidisciplinary

Facile synthesis of r GO/Ag/PVA nanocomposites polymeric films by electron beam irradiation for optoelectronic applications

R. M. Attia et al.

Summary: This study demonstrated the preparation of graphene oxide (GO) and the formation of silver nanoparticles (Ag NPs) using electron beam irradiation (EBI) treatment. Polyvinyl alcohol (PVA) based nanocomposite films were prepared and characterized using various techniques. The results showed that the prepared PVA/rGO and PVA/rGO/Ag NPs nanocomposite films have promising applications in optoelectronic devices.

OPTICAL MATERIALS (2022)

Article Chemistry, Physical

Direct 2D cement-nanoadditive deposition enabling carbon-neutral hydrogen from natural gas

Shu Jian Chen et al.

Summary: A novel production scheme is proposed to neutralize the CO2 generated from natural gas-based hydrogen production by direct deposition of 2-dimensional carbon as a cement nanoadditive. This approach can significantly reduce carbon nanosheets costs and cement usage, leading to carbon-neutral hydrogen production.

NANO ENERGY (2022)

Article Green & Sustainable Science & Technology

Innovative use of agro-waste cane bagasse ash and waste glass as cement replacement for green concrete. Cost analysis and carbon dioxide emissions

Oscar Felipe Arbelaez Perez et al.

Summary: The individual incorporation of cane bagasse ash and waste glass as substitutes for cement in concrete changes its properties significantly. When used in combination, both materials contribute to improved physical and mechanical properties, especially in terms of compressive strength. Additionally, the combined use of cane bagasse ash and waste glass has a positive impact on reducing carbon emissions and mitigating the effects of alkali-silica reaction.

JOURNAL OF CLEANER PRODUCTION (2022)

Article Materials Science, Multidisciplinary

Molecular dynamics study on the influence of graphene oxide on the tensile behavior of calcium silicate hydrate composites

Yuan Gao et al.

Summary: Graphene oxide (GO) has great dispersibility, ultra-high specific surface area, and superior mechanical properties, making it a potential candidate for nanoengineered concrete. This study investigates the mechanical characteristics of C-S-H/GO nanocomposites and reveals the reinforcing mechanisms of GO in C-S-H gel through molecular dynamics simulation.

MATERIALS CHEMISTRY AND PHYSICS (2022)

Article Construction & Building Technology

Enhancing the mechanical and functional performance of carbon fiber reinforced cement mortar by the inclusion of a cost-effective graphene nanofluid additive

Hongtao Yu et al.

Summary: In this study, a low-cost and industrially scalable graphene nanofluid additive (GNA) was successfully incorporated into carbon fibre-reinforced cement mortar (CFRCM) to enhance its functionalities. The results showed significant improvements in the properties of the cement mortar, including strength, thermal conductivity, and electrical conductivity, when modified with GNA. Moreover, the service life of the cathodic protection system using G-CFRCM was significantly extended.

CEMENT & CONCRETE COMPOSITES (2022)

Article Chemistry, Physical

Multi-scale analysis of the strengthening mechanism of functionalized graphene as reinforcement in cement composites

Qichang Fan et al.

Summary: This paper explored the impact of graphene oxides used as cement composites reinforcing materials on the mechanical properties of samples. The results showed that both direct and indirect methods effectively improved the mechanical performance of mortar and increased its flexural strength. Molecular dynamics simulation results revealed that different types of graphene oxides had different enhancement effects on mortar.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS (2022)

Article Construction & Building Technology

Nano-engineering the interfacial transition zone in cement composites with graphene oxide

Dong Lu et al.

Summary: This study demonstrates a low-cost, simple, and targeted approach to improve the interfacial transition zone (ITZ) of cement mortar and concrete using sand particles pre-saturated in a graphene oxide dispersion. The use of this approach significantly increased compressive and flexural strengths, reduced porosity, and enhanced hydration product formation in the ITZ region.

CONSTRUCTION AND BUILDING MATERIALS (2022)

Article Mechanics

Effect of particle morphology on fatigue crack propagation mechanism of TiB2-reinforced steel matrix composites

Ronghua Chen et al.

Summary: The fatigue crack growth mechanisms of as-cast and hot-rolled TiB2-reinforced steel matrix composites were investigated. The as-cast composite showed superior fatigue crack growth resistance due to the particle morphology, high Young's modulus, and strong interfacial bonding. The eutectic particle phases produced a hardening effect and changed the stress-strain field, resulting in a tortuous crack path and reducing the crack driving force. In contrast, the hot-rolled composite had detrimental effects on fatigue crack growth resistance due to the presence of numerous micro-cracks.

ENGINEERING FRACTURE MECHANICS (2022)

Article Environmental Sciences

Recycling of arsenic-containing biohydrometallurgy waste to produce a binder for cemented paste backfill: Co-treatment with oil shale residue

Yingliang Zhao et al.

Summary: This study investigated the use of arsenic-containing biohydrometallurgy waste (BW) as an alternative cementitious material for cemented paste backfill (CPB). The addition of calcined oil shale residue (COSR) reduced the flowability of fresh slurry and early-age compressive strength, but 20 wt% COSR resulted in the highest later age compressive strength. The presence of COSR had no significant effect on the phase assembles but changed the amount of ettringite (AFt) and calcium silicate aluminate hydrate (C-A-S-H).

JOURNAL OF ENVIRONMENTAL MANAGEMENT (2022)

Article Construction & Building Technology

Effect of GO nanosheets on microstructure, mechanical and fracture properties of cement composites

Sabrina Vantadori et al.

Summary: The aim of this paper is to investigate the effects of graphene oxide (GO) nanosheets addition in a cement-based material from both a microstructural and a mechanical/fracture point of view. Experimental studies on plain mortar and mortar reinforced with 0.03% GO nanosheets, obtained through the Brodie's method, were conducted. The results showed that the addition of graphene oxide improved the mechanical properties and fracture toughness of the cement-based material.

CONSTRUCTION AND BUILDING MATERIALS (2022)

Article Construction & Building Technology

Industrial graphene oxide-fly ash hybrid for high-performance cemented waste rock backfill

Yuan Gao et al.

Summary: The study used an industrial graphene oxide-fly ash hybrid as mine backfill material to enhance the mechanical and impermeability properties of the waste rock backfills. Only a small amount of graphene oxide is needed to reduce cement consumption by up to 20%.

CONSTRUCTION AND BUILDING MATERIALS (2022)

Proceedings Paper Materials Science, Multidisciplinary

Review of energy modelling, energy efficiency models improvement and carbon dioxide emissions mitigation options for the cement industry in South Africa

M. N. Ntuli et al.

Summary: The cement sector in South Africa contributes 1% to the national green-house gas inventory. This study aims to review previous energy modelling strategies in the cement industry to examine their alignment with the South African government's goals. It also investigates long-term energy efficiency and CO2 mitigation options for the sector. The study uses two modelling frameworks to analyze strategies for reducing energy demand and associated CO2 emission.

MATERIALS TODAY-PROCEEDINGS (2022)

Article Construction & Building Technology

Graphene oxide-coated sand for improving performance of cement composites

Hoan D. Nguyen et al.

Summary: The study showed that using graphene oxide-coated sand can improve the properties of cement composites, including reducing water absorption, increasing compressive and tensile strengths, and enhancing the strength and toughness of the interface.

CEMENT & CONCRETE COMPOSITES (2021)

Article Construction & Building Technology

Performance study and engineering application of grouting materials with a large content of solid waste

Benan Shu et al.

Summary: The study found that the optimal content was 40% fly ash and 20% steel slag powder. Both grouting materials exhibited excellent fluidity, bleeding performance, and mechanical properties, as well as good economic and environmental benefits. The 40% fly ash showed remarkable filling properties and process adaptability, successfully applied in a 30-meter box girder without any defects.

CONSTRUCTION AND BUILDING MATERIALS (2021)

Article Materials Science, Multidisciplinary

Influence of fiber type on the tensile behavior of high-strength strain-hardening cement-based composites (SHCC) at elevated temperatures

Iurie Curosu et al.

Summary: The study investigated the influence of different fiber types on the mechanical behavior of high-strength strain-hardening cement-based composites (HS-SHCC) exposed to elevated temperatures. Results showed that SHCC reinforced with UHMWPE fiber exhibited superior multiple cracking and pre-peak ductility, while composites made with Aramid and PBO fibers displayed pronounced degradation in tensile strength and strain capacity under high temperatures.

MATERIALS & DESIGN (2021)

Article Construction & Building Technology

Self-assembled 0D/2D nano carbon materials engineered smart and multifunctional cement-based composites

Sufen Dong et al.

Summary: This paper introduces the development of smart cement-based composites by assembling 0D nano carbon black and 2D graphene through electrostatic adsorption, providing high toughness, self-sensing, and shielding/absorbing electromagnetic wave properties. These composites have promising applications in oil well cementing, structural health monitoring, and electromagnetic protection fields.

CONSTRUCTION AND BUILDING MATERIALS (2021)

Article Engineering, Mechanical

Comparative analysis of dynamic constitutive response of hybrid fibre-reinforced concrete with different matrix strengths

Qiang Fu et al.

Summary: The study found that increasing the volume of hybrid fibers in concrete can enhance the strain rate effect of dynamic compressive strength, but this effect decreases with higher matrix strength. Toughness increases with higher strain rates, volume of hybrid fibers, and matrix strength.

INTERNATIONAL JOURNAL OF IMPACT ENGINEERING (2021)

Article Materials Science, Multidisciplinary

Microstructural and mechanical characteristics of direct laser welding 7075 super hard aluminum alloy/ D6AC ultra-high strength alloy structural steel

Yang Bao et al.

Summary: Through direct laser welding 7075 super-hard aluminum and D6AC super-high strength alloy structural steel, it was found that by setting specific laser parameters, the best joint formation can be achieved. However, brittle intermetallic compounds may form within the joints.

MATERIALS LETTERS (2021)

Article Construction & Building Technology

Cement based eco-grouting composite for pre-reinforcement of shallow underground excavation in vegetation protection area

Cong Zhang et al.

Summary: This study introduced a practical and efficient strategy for producing a composite grouting material with microbial polysaccharide gum (CGMG) for pre-reinforcement of shallow underground excavation, showing excellent workability performance and eco-friendly characteristics, providing a new option for grouting in ecologically sensitive areas.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2021)

Review Chemistry, Multidisciplinary

Graphene-Based Cementitious Composites: Toward Next-Generation Construction Technologies

Malgorzata Krystek et al.

Summary: Graphene and related materials are powerful components for boosting concrete technology and constructing smart buildings, with potential applications in structural health monitoring.

ADVANCED FUNCTIONAL MATERIALS (2021)

Article Construction & Building Technology

Studies on combined effects of graphene oxide-fly ash hybrid on the workability, mechanical performance and pore structures of cementitious grouting under high W/C ratio

Yuan Gao et al.

Summary: The study found that fly ash combined with graphene oxide can be used as a substitute for cement to improve the workability of grouting materials and compensate for the loss of mechanical properties.

CONSTRUCTION AND BUILDING MATERIALS (2021)

Article Chemistry, Multidisciplinary

The role of graphene/graphene oxide in cement hydration

Shaoqiang Meng et al.

Summary: Graphene and graphene oxide have been shown to significantly improve the mechanical properties of cement-based materials by accelerating the nucleation and growth of C-S-H on the cement surface. The presence of high mobility ions derived by graphene in the cement paste enhances the interaction between the cement surface and ions, facilitating the hydration of cement.

NANOTECHNOLOGY REVIEWS (2021)

Article Engineering, Biomedical

Experimental and numerical analysis on bending and tensile failure behavior of calcium phosphate cements

Ali Paknahad et al.

JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS (2020)

Review Construction & Building Technology

Effect of carbon nanotubes on compressive, flexural and tensile strengths of Portland cement-based materials: A systematic literature review

Laura Silvestro et al.

CONSTRUCTION AND BUILDING MATERIALS (2020)

Article Construction & Building Technology

Hybrid graphene oxide/carbon nanotubes reinforced cement paste: An investigation on hybrid ratio

Yuhang Du et al.

CONSTRUCTION AND BUILDING MATERIALS (2020)

Article Materials Science, Multidisciplinary

Nano and micro structures produced from carbon rich fly ash as effective lubricant additives for 150SN base oil

Numan Salah et al.

JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T (2019)

Article Construction & Building Technology

Study and engineering application on the bolt-grouting reinforcement effect in underground engineering with fractured surrounding rock

Q. Wang et al.

TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY (2019)

Article Construction & Building Technology

Aggregation size effect of graphene oxide on its reinforcing efficiency to cement-based materials

Zeyu Lu et al.

CEMENT & CONCRETE COMPOSITES (2019)

Article Engineering, Multidisciplinary

The role of carbon nanotube on hydration kinetics and shrinkage of cement composite

Million Tafesse et al.

COMPOSITES PART B-ENGINEERING (2019)

Article Construction & Building Technology

Enhanced dynamic mechanical properties of cement paste modified with graphene oxide nanosheets and its reinforcing mechanism

Wu-Jian Long et al.

CEMENT & CONCRETE COMPOSITES (2018)

Article Construction & Building Technology

Nano-silica and silica fume modified cement mortar used as Surface Protection Material to enhance the impermeability

Bingliu Zhang et al.

CEMENT & CONCRETE COMPOSITES (2018)

Review Construction & Building Technology

Graphene-based nanosheets for stronger and more durable concrete: A review

Ezzatollah Shamsaei et al.

CONSTRUCTION AND BUILDING MATERIALS (2018)

Article Engineering, Geological

Dynamic mechanical behaviors of Fangshan marble

Wei Yao et al.

JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING (2017)

Article Engineering, Geological

Dynamic rock tensile strengths of Laurentian granite: Experimental observation and micromechanical model

Kaiwen Xia et al.

JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING (2017)

Article Engineering, Multidisciplinary

Development of quick-hardening infilling materials for composite railroad tracks to strengthen existing ballasted track

Il-Wha Lee et al.

COMPOSITES PART B-ENGINEERING (2016)

Article Chemistry, Multidisciplinary

Co-effects of graphene oxide sheets and single wall carbon nanotubes on mechanical properties of cement

Xueguang Li et al.

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS (2015)

Article Construction & Building Technology

Effect of GO nanosheets on shapes of cement hydration crystals and their formation process

Shenghua Lv et al.

CONSTRUCTION AND BUILDING MATERIALS (2014)

Article Engineering, Geological

Suggested methods for determining the dynamic strength parameters and mode-I fracture toughness of rock materials

Y. X. Zhou et al.

INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES (2012)

Article Engineering, Geological

Some Fundamental Issues in Dynamic Compression and Tension Tests of Rocks Using Split Hopkinson Pressure Bar

Feng Dai et al.

ROCK MECHANICS AND ROCK ENGINEERING (2010)