Engineering properties of geopolymer concrete incorporating hybrid nano-materials

Kotop, Menatalah A.; El-Feky, M.S.; Alharbi, Yousef R.; Abadel, Aref A.; Binyahya, Abobaker S.

doi:10.1016/j.asej.2021.04.022

Cited by 78 publications

(17 citation statements)

References 35 publications

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“…The inclusion of a crystalline form of Al 2 O 3 lowers the Si/Al ratio in the matrix, resulting in a greater degree of geopolymeric gel rearrangement, promoting polymerization. Due to the presence of an amorphous form as opposed to the nano-crystalline Al 2 O 3 phase, it was thought that NS impacts the polymerization reaction, whereas nano-Al 2 O 3 presumably does not contribute to this process and affects the function as nanofillers [ 63 ].…”

Section: Types Of Nanomaterials Used In Gpcmentioning

confidence: 99%

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

et al. 2022

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The main objective of this review is to study some important nanomaterials and their impact on the performance of geopolymer concrete. This paper is an investigation into trends and technology in the development of different nanomaterials to develop higher structural performance geopolymer concrete. The effect of the alkaline to binder and sodium silicate to sodium hydroxide ratio on the performances of geopolymer performances is studied. The relationship between setting time and slump is evaluated through the ternary plot, the variation in compressive strength values is evaluated using the kernel density plot, and the relationship between split tensile and flexural strength is investigated using the scattering interval plot. Regression analysis is carried out among water absorption and bulk-density result values obtained from previous literature. As the molarity and alkaline to binder (A/B) ratios increase, the strength development of geopolymer concrete increases up to a specific limit. The addition of a small quantity of nanomaterials, namely, nano silica, nano alumina, carbon nano tubes, and nano clay, led to the maximum strength development of geopolymer concrete. Incorporating these nanomaterials into the geopolymer significantly refines the structural stability, improving its durability. The various products in GP composites emerging from the incorporation of highly reactive SEM, XRD, and FTIR analysis of nanomaterials reveal that the presence of nanomaterials, which enhances the rate of polymerization, leads to better performance of the geopolymer.

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Section: Types Of Nanomaterials Used In Gpcmentioning

confidence: 99%

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

et al. 2022

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“…Due to the unique structure and excellent properties, CNTs were introduced to modify polymer for improving the properties of polymer such as mechanical properties, electrical properties, and thermal stability, which have been confirmed by the previous reports (Kotop et al, 2021;Parnian and D'Amore, 2021). Kang et al prepared CNT/PP composites by melt injection molding method.…”

Section: Cntsmentioning

confidence: 75%

Tribological properties of carbon nanotube/polymer composites:A mini-review

Miao

Chen²,

Li³

et al. 2023

Front. Mater.

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With the development of modern industry, the requirements for mechanical equipment are increasingly stringent, and increasing attention has been paid to reducing wear or lubrication in the movement of mechanical structural parts. Polymers are widely used in the field of mechanical structural parts due to their high processing performance and comprehensive performance. However, the relatively weak mechanical and tribological properties of polymers limit their further application in mechanical equipment lubrication. Incorporation of fillers is a common method to improve the friction properties of polymers. Among various fillers, carbon nanotubes (CNTs) are considered the ideal fillers to significantly improve the tribological properties of polymers. Therefore, this paper reviews the tribological properties of carbon nanotube modified polymer materials. The tribological wear mechanism of polymers and the influence of friction-reducing fillers on the tribological properties of polymers and the related lubrication mechanism explanation are outlined, and the factors influencing the tribological properties of composites by carbon nanotubes and the related lubrication mechanism explanation are analyzed. The presented review will be beneficial for the production of high-performance polymer nanocomposites.

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“…It may also be observed that the incorporation of hybrid fibres improves the compressive strength to a maximum of 17% for HTGPC5. According to literature, micro fibres act as bridges for controlling micro-cracks propagation [37,38]. The addition of mono polypropylene fibres of more than 0.15% results in a decrease in compressive strength.…”

Section: Compressive Strengthmentioning

confidence: 99%

“…In the initial stage, the polypropylene fibres control the propagation of microcracks. As the load increased, the action of steel fibre comes into existence in arresting the propagation of macrocracks, thereby increasing the flexural strength of the concrete [38,41]. The percentage increase in modulus of rupture varies from 7.29% for PTGPC1 up to 39.67% for HTGPC6.…”

Section: Split Tensile Strengthmentioning

confidence: 99%

Engineering Properties of Hybrid Fibre Reinforced Ternary Blend Geopolymer Concrete

2021

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The primary aim of this research is to find an alternative for Portland cement using inorganic geopolymers. This study investigated the effect of steel and polypropylene fibres hybridisation on ternary blend geopolymer concrete (TGPC) engineering properties using fly ash, ground granulated blast furnace slag (GGBS) and metakaolin as the source materials. The properties like compressive strength, splitting tensile strength, flexural strength and modulus of elasticity of ternary blend geopolymer concrete. The standard tests were conducted on TGPC with steel fibres, polypropylene fibres and a combination of steel and polypropylene fibres in hybrid form. A total number of 45 specimens were tested and compared to determine each property. The grade of concrete considered was M55. The variables studied were the volume fraction of fibres, viz. steel fibres (0%, 0.5% and 1%) and polypropylene fibres (0%, 0.1%, 0.15%, 0.2% and 0.25%). The experimental results reveal that the addition of fibres in a hybrid form enhances the mechanical properties of TGPC. The increase in the compressive strength was nominal, and a significant improvement was observed in splitting tensile strength, flexural strength, and modulus of elasticity. Also, an attempt to obtain the relation between the different engineering properties was made with different volume fractions of fibre.

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Engineering properties of geopolymer concrete incorporating hybrid nano-materials

Cited by 78 publications

References 35 publications

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

Review on the Relationship between Nano Modifications of Geopolymer Concrete and Their Structural Characteristics

Tribological properties of carbon nanotube/polymer composites:A mini-review

Engineering Properties of Hybrid Fibre Reinforced Ternary Blend Geopolymer Concrete

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