Physical and Microstructure Properties of Geopolymer Nanocomposite Reinforced with Carbon Nanotubes

Jittabut, Pongsak; Horpibulsuk, Suksun

doi:10.1016/j.matpr.2019.06.199

Cited by 32 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Nanotechnology has gained popularity in cement and concrete research in recent years, notably in the formation of Nano-composites with superior physical and mechanical qualities [14][15][16]. Various types of nanoparticles have been effectively used in concrete to increase mechanical qualities and durability.…”

Section: Introductionmentioning

confidence: 99%

Behaviour of sustainable concretes modified with mineral admixtures and Nano-silica against aggressive media attacks

Ahmad

Elshami

Fawzy

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

The goal of this study is to see how the effect of recycled concrete aggregate admixed with mineral admixtures and Nano-silica on concrete's durability after being exposed to aggressive media attacks. The coarse aggregates applied in the concrete were dolomite (control) and recycled concrete aggregate with the addition of various mineral admixtures such as ground granulated blast slag (GGBFS), granite, and Nano-silica. To lower the water/cement ratio, a superplasticizer (SP)-type (F) was used. The physical and mechanical properties of commonly used raw materials such as aggregates and other various concrete kinds were investigated. The effects of saltwater and 3% sodium chloride on concrete mechanical and microstructures properties were investigated. The slump values of dolomite concrete were found to be lower than those of recycled aggregate concrete. The concrete mix using recyclable aggregate has the highest compressive strength, according to the results. In terms of compressive strength, the addition of 1% NS (Nano-silica) and 15% slag increased both mechanical and durability properties of the recycled aggregate concrete in aggressive media.

show abstract

Section: Introductionmentioning

confidence: 99%

Behaviour of sustainable concretes modified with mineral admixtures and Nano-silica against aggressive media attacks

Ahmad

Elshami

Fawzy

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…The increase in carbon content (C) from 1.19 to 2.18% indicated the existence of GO in the geopolymer. The geopolymerization reactions that formed N-A-S-H and Si-O-Al products were also promoted by the addition of GO, as seen by the increasing weight of Si from 13.51 to 14.72% and Na from 12.00 to 13.41% [ 52 , 53 ].…”

Section: Resultsmentioning

confidence: 99%

Influence of Graphene Oxide Nanoparticles on Bond-Slip Reponses between Fiber and Geopolymer Mortar

et al. 2022

View full text Add to dashboard Cite

In this study, the influence of graphene oxide nanoparticles on the bond-slip behavior of fiber and fly-ash-based geopolymer paste was examined. Geopolymer paste incorporating a graphene oxide nanoparticle solution was cast in half briquetted specimens and embedded with a fiber. Three types of fiber were used: steel, polypropylene, and basalt. The pullout test was performed at two distinct speeds: 1 mm/s and 3 mm/s. The results showed that the addition of graphene oxide increased the compressive strength of the geopolymer by about 7%. The bond-slip responses of fibers embedded in the geopolymer mixed with graphene oxide exhibited higher peak stress and toughness compared to those embedded in a normal geopolymer. Each fiber type also showed a different mode of failure. Both steel and polypropylene fibers showed full bond-slip responses due to their high ductility. Basalt fiber, on the other hand, because of its brittleness, failed by fiber fracture mode and showed no slip in pullout responses. Both bond strength and toughness were found to be rate-sensitive. The sensitivity was higher in the graphene oxide/geopolymer than in the conventional geopolymer.

show abstract

“…According to experiments [ 35 , 36 ] performed on concrete samples created by completely swapping out the original aggregates for recycled aggregates that contained a mineral admixture of fly ash (FA), slag (BFS), and silica fume (SF), concrete properties can be developed to meet requirements with the correct mineral selection and proportioning. Recent years have seen a growing interest in nanotechnology for cement research due to the superior physical and mechanical properties of nanomaterials [ 37 , 38 , 39 , 40 ]. Different nanoparticles have been effectively used in concrete to enhance its mechanical properties and great durability.…”

Section: Introductionmentioning

confidence: 99%

Investigating the Effects of Recycled Aggregate and Mineral Admixtures on the Mechanical Properties and Performance of Concrete

2023

View full text Add to dashboard Cite

In this work, the effects of recycled concrete aggregate, modified with mineral admixtures and nanosilica, on the mechanical properties and performance of concrete after curing in tap water for 28 and 90 days were investigated. The compressive (ƒc), indirect tensile (ƒt), and flexural (ƒb) strengths for the cured concrete specimens were measured, and the concrete strength ratios were analyzed. The water and rapid chloride permeabilities were measured. SEM analysis of the microstructure was also performed. The coarse aggregates used were dolomite (control) and recycled concrete aggregate, incorporating different mineral admixtures, including ground, granulated blast slag, granite, and nanosilica. It was found that the slump values of the dolomite concrete decreased compared with recycled aggregate concrete. Compared to the control mix produced with the recycled aggregate, the slump value of the concrete mixes created with the recycled aggregate increased by approximately 11.1% with the addition of binary cementing materials of 1% NS. The results also indicate that the concrete mix containing the recycled aggregate had the highest compressive strength, tensile strength, and flexural strength compared to that of the dolomite aggregate. Regarding the compressive strength, the addition of 1% NS and 15% slag improved the physico-mechanical properties of the recycled aggregate concretes compared to the other mixes after curing in tap water. Compared to the other mixes, the concrete mix containing 1% NS and 15% slag had a comparatively dense and compact microstructure.

show abstract

Physical and Microstructure Properties of Geopolymer Nanocomposite Reinforced with Carbon Nanotubes

Cited by 32 publications

References 19 publications

Behaviour of sustainable concretes modified with mineral admixtures and Nano-silica against aggressive media attacks

Behaviour of sustainable concretes modified with mineral admixtures and Nano-silica against aggressive media attacks

Influence of Graphene Oxide Nanoparticles on Bond-Slip Reponses between Fiber and Geopolymer Mortar

Investigating the Effects of Recycled Aggregate and Mineral Admixtures on the Mechanical Properties and Performance of Concrete

Contact Info

Product

Resources

About