Development of low-calcium fly ash-based geopolymer mortar using nanosilica and hybrid fibers

Chen, Keyu; Wu, Dazhi; Chen, Haixiang; Zhang, Guoqing; Yao, Ruolan; Pan, Chonggen; Zhang, Zhenying

doi:10.1016/j.ceramint.2021.04.196

Cited by 38 publications

(4 citation statements)

References 52 publications

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“…Activators have a significant influence on the polymerization process. Polymerization occurs rapidly when the alkaline activator dissolves the Si and Al from the binding material to create the matrix [ 66 , 67 ]. The reactivity of FA is enhanced by employing an activator made from NaOH and Na 2 SiO 3 .…”

Section: Types Of Nanomaterials Used In Gpcmentioning

confidence: 99%

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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%

“…Nano silica into the GPC increases matrix density while improving mechanical properties [ 67 ]. The XRD pattern of GP paste with nano alumina admixed is equivalent to that of GP paste with NS added.…”

Section: Influences Of Nanomaterials On Fresh and Hardened Properties...mentioning

confidence: 99%

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

et al. 2022

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“…With the addition of mineral wool fibers, the greater the content of mineral wool fibers, the less the flexural strength. Although works show that mineral wool fibers can increase mechanical strength [50][51][52][53][54][55][56][57][58][59] when replacing cement, sand or aggregate, they were added and mixed with cement and sand.…”

Section: Flexural and Compressive Strengths Of Mortarsmentioning

confidence: 99%

Thermal insulation and mechanical characteristics of cement mortar reinforced with mineral wool and rice straw fibers

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et al. 2022

Journal of Building Engineering

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“…For example, nano titanium dioxide decreases carbonation depth [192] and raises chloride and sulfate resistance through the formation of hydrates and the filling effect [193]. In turn, nanosilica significantly attenuates water absorption [194] and significantly enhances the material resistance to acid environments and limiting surface deterioration thanks to the decreased porosity and increased density of the geopolymer [195]. For infrastructure applications, particularly interesting are different forms of nanocarbon [196].…”

Section: Sustainability Of Geopolymer Nanocompositesmentioning

confidence: 99%

Review of Geopolymer Nanocomposites: Novel Materials for Sustainable Development

et al. 2023

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The demand for geopolymer materials is constantly growing. This, in turn, translates into an increasing number of studies aimed at developing new approaches to the methodology of geopolymer synthesis. The range of potential applications of geopolymers can be increased by improving the properties of the components. Future directions of studies on geopolymer materials aim at developing geopolymers showing excellent mechanical properties but also demonstrating significant improvement in thermal, magnetic, or sorption characteristics. Additionally, the current efforts focus not only on the materials’ properties but also on obtaining them as a result of environment-friendly approaches performed in line with circular economy assumptions. Scientists look for smart and economical solutions such that a small amount of the modifier will translate into a significant improvement in functional properties. Thus, special attention is paid to the application of nanomaterials. This article presents selected nanoparticles incorporated into geopolymer matrices, including carbon nanotubes, graphene, nanosilica, and titanium dioxide. The review was prepared employing scientific databases, with particular attention given to studies on geopolymer nanocomposites. The purpose of this review article is to discuss geopolymer nanocomposites in the context of a sustainable development approach. Importantly, the main focus is on the influence of these nanomaterials on the physicochemical properties of geopolymer nanocomposites. Such a combination of geopolymer technology and nanotechnology seems to be promising in terms of preparation of nanocomposites with a variety of potential uses.

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Development of low-calcium fly ash-based geopolymer mortar using nanosilica and hybrid fibers

Cited by 38 publications

References 52 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

Thermal insulation and mechanical characteristics of cement mortar reinforced with mineral wool and rice straw fibers

Review of Geopolymer Nanocomposites: Novel Materials for Sustainable Development

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