Mechanical and thermal properties of graphene sulfonate nanosheet reinforced sacrificial concrete at elevated temperatures

Chu, Hsin; Sun, Wei; Zhang, Mingzhong

doi:10.1016/j.conbuildmat.2017.07.157

Cited by 42 publications

(9 citation statements)

References 51 publications

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“…However, exposure to an elevated temperature imposes a detrimental effect on the properties of CBMS, in which both chemical and physical transformations occur under thermal exposure. Nanomaterials, such as nanosilica, nanoalumina, nanoclay, CNT, GO, and graphene sulphonate nanosheet (GSNS), have been demonstrated to have the potential to impede the thermal degradation of CBMS [14,68,69,70,71,72,73,74,75,76,77]. A study aimed at using low-cost nanomaterials in the cement paste, has synthesized nanosilica from the rice husk ash and investigated its effect on the thermal resistance of cement pastes [69].…”

Section: Nanotechnology For Cbms To Overcome Chemical Deteriorationsmentioning

confidence: 99%

Nanotechnology in Cement-Based Materials: A Review of Durability, Modeling, and Advanced Characterization

AlShareedah

et al. 2019

Nanomaterials

109

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In the context of increasing applications of various nanomaterials in construction, this work reviews the renewed knowledge of nanotechnology in cement-based materials, focusing on the relevant papers published over the last decade. The addition of nanomaterials in cement-based materials, associated with their dispersion in cement composites, is explored to evaluate their effects on the resistance of cement-based materials to physical deteriorations, chemical deteriorations, and rebar corrosion. This review also examines the proposed nanoscale modeling of interactions between admixed nanomaterials and cement hydration products. At last, the recent progress of advanced characterization that employs techniques to characterize the properties of cement-based materials at the nanoscale is summarized.

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Section: Nanotechnology For Cbms To Overcome Chemical Deteriorationsmentioning

confidence: 99%

Nanotechnology in Cement-Based Materials: A Review of Durability, Modeling, and Advanced Characterization

AlShareedah

et al. 2019

Nanomaterials

109

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“…Nevertheless, interest related to the influence of carbon-based nanomaterials on the performance of cement-based composites, under various thermal conditions, is relatively limited [ 59 , 60 , 61 , 62 ]. However, the available data shows very promising results regarding the incorporation of carbon-based nanomaterials, to produce heat-resistant cementitious composites.…”

Section: The Effect Of Carbon-based Nanomaterials On the Thermal Rmentioning

confidence: 99%

“…Chu et al [ 60 ] analyzed the effect of graphene sulfonate nanosheets (GSNSs), in the amount of 0.1 wt. %, on the properties of sacrificial concretes (w/b = 0.33) exposed to temperatures of up to 1000 °C.…”

Section: The Effect Of Carbon-based Nanomaterials On the Thermal Rmentioning

confidence: 99%

The Influence of Nanomaterials on the Thermal Resistance of Cement-Based Composites—A Review

2018

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Exposure to elevated temperatures has detrimental effects on the properties of cementitious composites, leading to irreversible changes, up to total failure. Various methods have been used to suppress the deterioration of concrete under elevated temperature conditions. Recently, nanomaterials have been introduced as admixtures, which decrease the thermal degradation of cement-based composites after exposure to high temperatures. This paper presents a comprehensive review of recent developments related to the effects of nanoparticles on the thermal resistance of cementitious composites. The review provides an updated report on the effects of temperature on the properties of cement-based composites, as well as a detailed analysis of the available literature regarding the inclusion of nanomaterials and their effects on the thermal degradation of cementitious composites. The data from the studies reviewed indicate that the inclusion of nanoparticles in composites protects from strength loss, as well as contributing to a decrease in disruptive cracking, after thermal exposure. From all the nanomaterials presented, nanosilica has been studied the most extensively. However, there are other nanomaterials, such as carbon nanotubes, graphene oxide, nanoclays, nanoalumina or nano-iron oxides, that can be used to produce heat-resistant cementitious composites. Based on the data available, it can be concluded that the effects of nanomaterials have not been fully explored and that further investigations are required, so as to successfully utilize them in the production of heat-resistant cementitious composites.

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“…With the advancement of nanotechnology, the mixing of nanomaterials into cement-based materials has been increasingly researched. A wide variety of nanomaterials have been investigated, including nano-silicon oxide [ 23 , 24 , 25 ], nano-titanium oxide [ 26 ], carbon nanotubes [ 27 , 28 , 29 ], sulfonated graphene [ 30 , 31 , 32 ], and graphene oxide (GO) [ 33 , 34 , 35 , 36 , 37 ]. GO is a new type of nanomaterial with excellent mechanical properties and good dispersion properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Graphene Oxide on Mechanical Properties and Durability of Ultra-High-Performance Concrete Prepared from Recycled Sand

et al. 2020

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Ultra-high-performance concrete (UHPC) has been used as an advanced construction material in civil engineering because of its excellent mechanical properties and durability. However, with the depletion of the raw material (river sand) used for preparing UHPC, it is imperative to find a replacement material. Recycled sand is an alternative raw material for preparing UHPC, but it degrades the performance. In this study, we investigated the use of graphene oxide (GO) as an additive for enhancing the properties of UHPC prepared from recycled sand. The primary objective was to investigate the effects of GO on the mechanical properties and durability of the UHPC at different concentrations. Additionally, the impact of the GO additive on the microstructure of the UHPC prepared from recycled sand was analysed at different mixing concentrations. The addition of GO resulted in the following: (1) The porosity of the UHPC prepared from recycled sand was reduced by 4.45–11.35%; (2) the compressive strength, flexural strength, splitting tensile strength, and elastic modulus of the UHPC prepared from recycled sand were enhanced by 8.24–16.83%, 11.26–26.62%, 15.63–29.54%, and 5.84–12.25%, respectively; (3) the resistance of the UHPC to penetration of chloride ions increased, and the freeze–thaw resistance improved; (4) the optimum mixing concentration of GO in the UHPC was determined to be 0.05 wt.%, according to a comprehensive analysis of its effects on the microstructure, mechanical properties, and durability of the UHPC. The findings of this study provide important guidance for the utilisation of recycled sand resources.

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Mechanical and thermal properties of graphene sulfonate nanosheet reinforced sacrificial concrete at elevated temperatures

Cited by 42 publications

References 51 publications

Nanotechnology in Cement-Based Materials: A Review of Durability, Modeling, and Advanced Characterization

Nanotechnology in Cement-Based Materials: A Review of Durability, Modeling, and Advanced Characterization

The Influence of Nanomaterials on the Thermal Resistance of Cement-Based Composites—A Review

Effect of Graphene Oxide on Mechanical Properties and Durability of Ultra-High-Performance Concrete Prepared from Recycled Sand

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