Enhancing Concrete and Mortar Properties and Durability Using Pristine Graphene Particles

Chetty, Kirthi; Watson, Michael; Raine, Thomas; McGurgan, Todd; Ladislaus, Paul; Chen, Jun; Zhang, Shuai; Lin, Liangxu; Jiang, Guangming

doi:10.3390/coatings12111703

Cited by 12 publications

(4 citation statements)

References 72 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, they noted a decrease in strength at a 0.20% admixture level, likely attributable to graphene oxide agglomeration. Further corroborating these findings, Kirthi et al [15] found an optimal graphene dosage range of 0.02% to 0.1%, enhancing the concrete compressive strength by 10% to 20%. Despite these promising results, the high cost and difficulty in sourcing graphene limit its practical application in widespread engineering projects.…”

Section: Introductionmentioning

confidence: 63%

A Novel Pervious Concrete Improved by Hexagonal Boron Nitride and Basalt Fiber in Mechanical Properties, Permeability, and Micro-Mechanisms

Zhan,

Yin

2024

Buildings

View full text Add to dashboard Cite

In order to overcome the limitations of traditional pervious concrete, which is difficult to balance in terms of both mechanical properties and permeability, this study proposed a novel and effective approach to improve the performances of pervious concrete (PC) based on hexagonal boron nitride (h-BN) and basalt fibers (BF). The mechanical properties and permeability tests of PC with single-doped or double-doped h-BN and BF were conducted first. Then the influence laws of h-BN and BF content on the compressive strength, flexural strength, porosity, and permeability coefficient for PC were revealed. Finally, the micro-mechanism effects of h-BN and BF on the performances of PC were explored by using a scanning electron microscope and an energy dispersive spectrometer. The results showed that the compressive strength of PC was increased with the increase in the h-BN content, and the flexural strength, porosity, and permeability coefficient increased first and then decreased. Meanwhile, with the increase in the BF content, the compressive strength and flexural strength of PC increased first and then decreased. Moreover, the compressive strength, flexural strength, porosity, and permeability coefficient of the proposed pervious concrete were 22.8 MPa, 5.17 MPa, 18.5%, and 5.09 mm/s, respectively, which were increases of 21.9%, 19.7%, 60.9%, and 42.2%, respectively, compared with ordinary permeable concrete when the optimal admixture combination was 15% fly ash, 0.08% h-BN, and 2.25% BF. This study can avoid the limitations of traditional pervious concrete and provide an efficient alternative way for improving the mechanical and permeability properties of pervious concrete.

show abstract

Section: Introductionmentioning

confidence: 63%

A Novel Pervious Concrete Improved by Hexagonal Boron Nitride and Basalt Fiber in Mechanical Properties, Permeability, and Micro-Mechanisms

Zhan,

Yin

2024

Buildings

View full text Add to dashboard Cite

show abstract

“…Consequently, the exploration of advanced building materials exhibiting commendable mechanical properties, durability, and sustainability has emerged as a significant research focus within the realm of civil engineering . In recent years, the advent of nanomaterials has introduced novel approaches to address these challenges and enhance the comprehensive performance of cement-based materials. − Graphene oxide (GO) is a two-dimensional nanomaterial consisting of carbon, hydrogen, and oxygen elements, with a large specific surface area and edge effect. − Due to its multiple functional enhancements, GO is widely utilized in various fields such as building materials , and batteries , to improve the performance and function of other materials. − Furthermore, GO has been employed in cementitious nanocomposites, owing to its exceptional properties. Mohammadreza Izadifar et al utilized tobermorite with a length of 14 Å as a model to create enhanced tobermorite nanocomposite materials by incorporating reduced graphene oxide (rGO).…”

Section: Introductionmentioning

confidence: 99%

Atomic Insights into the Relationship between Molecular Structure and Dispersion Performance of Phenyl Polymer on Graphene Oxide

Xin,

Zhang,

Hou

et al. 2023

Langmuir

View full text Add to dashboard Cite

The adsorption of organic polymers onto the surface of graphene oxide is known to improve its dispersibility in cement-based materials. However, the mechanism of this improvement at the atomic level is not yet fully understood. In this study, we employ a combination of DFT static calculation and umbrella sampling to explore the reactivity of polymers and investigate the effects of varying amounts of phenyl groups on their adsorption capacity on the surface of graphene oxide. Quantitative analysis is utilized to study the structural reconstruction and charge transfer caused by polymers from multiple perspectives. The interfacial reaction between the polymer and graphene oxide surface is further clarified, indicating that the adsorption process is promoted by hydrogen bond interactions and π–π stacking effects. This study sheds light on the adsorption mechanism of polymer–graphene oxide systems and has important implications for the design of more effective graphene oxide dispersants at the atomic level.

show abstract

“…Therefore, the civil engineering community shifted their attention to developing high-performance mortar through different approaches. Traditional approaches, such as lowering the water/cement ratio, were adopted to minimize capillary and gel pores in the past [3]. Other researchers tried to incorporate steel fiber in a cement mortar mixture, which substantially enhances structural features, such as flexural strength and tensile strength [4].…”

Section: Introductionmentioning

confidence: 99%

Assessment of the Mechanical Properties of High Strength Mortar Incorporating Silica Fume and Graphene Nanoplatelets: Experimental and Mathematical Modeling

et al. 2023

View full text Add to dashboard Cite

Cement-based mortar is recognized as a popular and cost-effective material for the rehabilitation and repair of reinforced concrete structures. However, the development of high-performance cement-based mortar is in high demand in order to not only enhance compressive strength but also to prolong the mortar lifespan and minimize maintenance costs as much as possible. In the current study, high-strength mortars incorporating both silica fume and graphene nanoplatelets (GNPs) were investigated and evaluated based on compressive and flexural strength. The graphene powder was added in amounts ranging from 0.5% to 2%, by cement weight, while silica fume was added as a partial replacement for cement (10%). The optimal content of the graphene was determined using response surface methodology (RSM). In addition, field emission scanning electron microscopy (FESEM) was used to assess the proposed mortar at the micro-scale level. The outcome revealed that the graphene-based mortar imparted superior mechanical properties compared to the control mixture. The compressive and flexural strength of the mortars containing 10% silica fume and 1% graphene increased by 33% and 35%, respectively. This positive result was attributed to the refinement of the nanopores and tiny cracks by the inclusion of GNPs, which was supported by microstructure testing. The RSM model was also shown to be capable of optimizing and predicting compressive and flexural strength with less error. It is possible to conclude that graphene-based high-strength mortar will serve as a sustainable material in the near future.

show abstract

Enhancing Concrete and Mortar Properties and Durability Using Pristine Graphene Particles

Cited by 12 publications

References 72 publications

A Novel Pervious Concrete Improved by Hexagonal Boron Nitride and Basalt Fiber in Mechanical Properties, Permeability, and Micro-Mechanisms

A Novel Pervious Concrete Improved by Hexagonal Boron Nitride and Basalt Fiber in Mechanical Properties, Permeability, and Micro-Mechanisms

Atomic Insights into the Relationship between Molecular Structure and Dispersion Performance of Phenyl Polymer on Graphene Oxide

Assessment of the Mechanical Properties of High Strength Mortar Incorporating Silica Fume and Graphene Nanoplatelets: Experimental and Mathematical Modeling

Contact Info

Product

Resources

About