A review on properties of cement-based composites doped with graphene

Zhang, Peng; Wang, Menghui; Han, Xu; Zheng, Ying‐Ying

doi:10.1016/j.jobe.2023.106367

Cited by 26 publications

(6 citation statements)

References 103 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The FG-modified mixtures show ∼40–70% and 10–50% higher strength compared to the control mortar at 1 and 3 d, respectively; the corresponding increases for RG-modified mixtures are ∼20–60% and 10–25%, respectively. Recent publications have highlighted notable disparities in the optimal dosages of GO/rGO and GNPs dosages for enhancing the mechanical properties of cement-based systems. ,,, In general, GO-modified mixtures (with comparable w/c as used here) showed an increase of ∼20–40% at early ages (at 3 and 7 d) at various GO contents (0.02–0.30% by mass of cement); − while GNP-modified mixtures showed strength improvement of 30–60% after 28 d at significantly higher dosages of ∼0.40–0.80% by mass of cement. ,,, rGO-modified mixtures are reported to show 10–15% increase in compressive strength compared to control mortar mixtures at dosages of 0.02–0.06% by mass of cement (similar to the dosages used in this study) . This shows that FG and RG can be used in dosages similar to or less than those used in other studies with GNPs, GO, and rGO to obtain comparable strength enhancements.…”

Section: Structure and Properties Of Fg- And Rg-modified Mixturesmentioning

confidence: 82%

“…Recent publications have highlighted notable disparities in the optimal dosages of GO/rGO and GNPs dosages for enhancing the mechanical properties of cement-based systems. 7,14,40,63 In general, GO-modified mixtures (with comparable w/c as used here) showed an increase of ∼20−40% at early ages (at 3 and 7 d) at various GO contents (0.02−0.30% by mass of cement); 64−66 while GNP-modified mixtures showed strength improvement of 30−60% after 28 d at significantly higher dosages of ∼0.40−0.80% by mass of cement. 2,64,67,68 rGOmodified mixtures are reported to show 10−15% increase in compressive strength compared to control mortar mixtures at dosages of 0.02−0.06% by mass of cement (similar to the dosages used in this study).…”

Section: Compressive Strengthmentioning

confidence: 99%

“…This variability stems from the type of graphene and mixture proportions used. However, regardless of these variations, when graphene is added in amounts less than or exceeding the optimal dosage, there is a decline in strength (and, indeed, other properties). ,, Since FG (and RG) has not been used in cementitious materials in the past, it is important to establish the changes in properties and performance of cementitious materials induced by these materials, given their differences with commonly used GO and rGO as explained earlier. Therefore, 1, 3, and 7 d compressive strengths of cement mortars containing up to 0.10% (by mass of cement) FG were determined, as shown in Figure .…”

Section: Structure and Properties Of Fg- And Rg-modified Mixturesmentioning

confidence: 99%

“…1−6 Graphene is a single atom thick planar sheet of sp 2 -bonded carbon atoms. 7,8 It exists in diverse forms, with the prominent types being graphene nanoplatelets (GNPs), graphene oxide (GO), and reduced graphene oxide (rGO). GNPs are composed of graphene sheets typically ranging between 10 and 100 layers.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

New Generation Graphenes in Cement-Based Materials: Production, Property Enhancement, and Life Cycle Analysis

Surehali,

Volaity,

Simon

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Several studies have explored the use of graphene to improve the properties of cement-based materials. However, most commercially available graphenes are expensive, not amenable to mass production, and have high embodied energy and emissions, making their use in concrete less attractive, despite the beneficial mechanical property attributes. This paper discusses the use of two novel graphene types, fractal graphene (FG) and reactive graphene (RG), obtained through a cost-effective and scalable detonation synthesis, in cement-based materials. FG and RG are sheets containing 6–10 layers, with lateral dimensions of 20–50 nm and a z-axis thickness of <5 nm. RG is functionalized with carboxylic groups. An ultrasonication process is employed to ensure dispersion of graphene particles in aqueous solutions. Both FG and RG, when added at very small dosages (≤0.04% by mass of cement), enhance the compressive strength of cement mortars by >70% at early ages and up to 20% at later ages. The beneficial effect of functionalization results in better performance for RG-modified mixtures, even at dosages as low as 0.02%. Concomitant enhancements in heat of hydration, hydrate formation, and rheological response are observed. A significant reduction in porosity and critical pore size (by 50% or more) promises significantly improved concrete durability, and thus reduced life-cycle costs. A comparative life cycle analysis (LCA) is used to show that FG- and RG-modified mortars have normalized (by the 28 d strength) energy demand and global warming potential (GWP) that is up to 15% lower than those of conventional mortars. Overall, this study shows that FG and RG, manufactured through a scalable, cost-, energy-, and CO2-efficient detonation synthesis, can beneficially impact the engineering and environmental performance of concretes.

show abstract

Section: Structure and Properties Of Fg- And Rg-modified Mixturesmentioning

confidence: 82%

Section: Compressive Strengthmentioning

confidence: 99%

Section: Structure and Properties Of Fg- And Rg-modified Mixturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

New Generation Graphenes in Cement-Based Materials: Production, Property Enhancement, and Life Cycle Analysis

Surehali,

Volaity,

Simon

et al. 2024

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…[6,7]. The addition of carbon nanomaterials to cementitious materials can improve many aspects of electrical conductivity, mechanical properties, crack resistance, durability, and thermal conductivity [6][7][8][9]. It is widely accepted that the dispersion of carbon nanomaterials is still the key factor inhibiting the performance of composites.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites

Liang,

Xia,

Yan

et al. 2024

Applied Sciences

View full text Add to dashboard Cite

Due to its ability to improve mechanical properties when incorporated into cement, graphene oxide (GO) has received extensive attention from scholars. Graphene oxide is also a filler that improves the self-sensing properties of cement composites (CCs). However, existing studies have not focused sufficient attention on the electric conductivity of cement composites filled with graphene oxide (GO/CCs) and their mechanisms, especially polarization. This study examines the effects of water content and temperature on the electrical conductivity of GO/CCs. GO/CC polarization phenomena are analyzed to reveal the conductive mechanism. The results show that water has a significant influence on the electrical conductivity of GO/CCs. With increasing water loss, the electrical resistivity of GO/CCs increases by four orders of magnitude. For the same water content, a 0.1% GO concentration significantly decreases the resistivity of GO/CCs. Temperature can significantly enhance the current intensity of GO/CCs; furthermore, there is a quadratic relationship between current intensity and temperature. The conductive mechanism of GO/CCs is attributed to the interaction between ionic conductivity and electronic conductivity.

show abstract

Evaluating Bulky PVA-ECC Mortar Developed with River Sand, Silica Fume, and High-Volume Fly Ash: A Focus on Short- and Long-Term Compressive Strength

Aswin,

Özkılıç,

Aksoylu

et al. 2024

Arab J Sci Eng

View full text Add to dashboard Cite

A review on properties of cement-based composites doped with graphene

Cited by 26 publications

References 103 publications

New Generation Graphenes in Cement-Based Materials: Production, Property Enhancement, and Life Cycle Analysis

New Generation Graphenes in Cement-Based Materials: Production, Property Enhancement, and Life Cycle Analysis

The Effect of Moisture Content on the Electrical Properties of Graphene Oxide/Cementitious Composites

Evaluating Bulky PVA-ECC Mortar Developed with River Sand, Silica Fume, and High-Volume Fly Ash: A Focus on Short- and Long-Term Compressive Strength

Contact Info

Product

Resources

About