Characterization, hydration, durability of nano-Fe2O3-composite cements subjected to sulphates and chlorides media

Heikal, Mohamed; Zaki, Magdi E. A.; Ibrahim, Sahar M.

doi:10.1016/j.conbuildmat.2020.121310

Cited by 29 publications

(8 citation statements)

References 38 publications

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“…81, 32.32, 32.77, 34.51, 39.64 and 41.35 • . The same findings and explanations were reported in recent publications [77,78]. Some minor changes have been observed after OPC replacement by 10 wt% DAK (Mix D10).…”

Section: Phases Identification 331 X-ray Diffraction (Xrd)supporting

confidence: 88%

De-aluminated metakaolin-cement composite modified with commercial titania as a new green building material for gamma-ray shielding applications

Ramadan

Kohail²,

Abadel³

et al. 2022

Case Studies in Construction Materials

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Section: Phases Identification 331 X-ray Diffraction (Xrd)supporting

confidence: 88%

De-aluminated metakaolin-cement composite modified with commercial titania as a new green building material for gamma-ray shielding applications

Ramadan

Kohail²,

Abadel³

et al. 2022

Case Studies in Construction Materials

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“…The mechanical properties of mortar samples increased with inclusion of ferric oxide nanoparticles, and a 3.0 wt % dosage was recognized as the optimal concentration. A study by Heikal et al [106] examined the influence of ferric oxide nanoparticles on the properties and durability resistance to chloride and sulfate anion attacks. Ferric oxide nanoparticles were manufactured from the heating of Fe(CH 3 COO) 2 OH at 450 • C and 300 • C at a 2 h soaking time.…”

Section: Ferric Oxide (Fe 2 O 3 )mentioning

confidence: 99%

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

2021

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At present, nanotechnology is a significant research area in different countries, owing to its immense ability along with its economic impact. Nanotechnology is the scientific study, development, manufacturing, and processing of structures and materials on a nanoscale level. It has tremendous application in different industries such as construction. This study discusses the various progressive uses of nanomaterials in concrete, as well as their related health risks and environmental impacts. Nanomaterials such as nanosilica, nano-TiO2, carbon nanotubes (CNTs), ferric oxides, polycarboxylates, and nanocellulose have the capability to increase the durability of buildings by improving their mechanical and thermal properties. This could cause an indirect reduction in energy usage and total expenses in the concrete industry. However, due to the uncertainties and irregularities in size, shape, and chemical compositions, some nanosized materials might have harmful effects on the environment and human health. Acknowledgement of the possible beneficial impacts and inadvertent dangers of these nanosized materials to the environment will be extremely important when pursuing progress in the upcoming years. This research paper is expected to bring proper attention to the probable effects of construction waste, together with the importance of proper regulations, on the final disposal of the construction waste.

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“…The effect of nanoparticles as partial cement replacement in the concrete mix has been studied by many researchers in recent years. Nano-SiO 2 is the most widely investigated nanoparticle [19,[51][52][53] while the effect of adding other partials such as nano-TiO 2 [22,54,55], nano-Al 2 O 3 [9,56,57], nano-ZnO 2 [58,59], nano-Fe 2 O 3 [10,60], nano-CuO [61], nano-SnO 2 , nano-ZrO 2 [62], nano-TiO 2 [63], carbon nanotubes [64], carbon nano-fibers [45], polycarboxylates [65], nano-Cr 2 O 3 [48,66], nano-clay [45] and nano-CaCO 3 [62,67] in properties of fresh and hardened concrete has been investigated so far. For example, Tawfik et al [68] evaluated the effect of nano-waste ceramic and nano-silica on the mechanical properties of hardened concrete.…”

Section: Nanoparticlesmentioning

confidence: 99%

Effect of Alumina Additives on Mechanical and Fresh Properties of Self-Compacting Concrete: A Review

et al. 2021

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Self-compacting concrete (SCC) has been increasingly used in the construction sector due to its favorable characteristics in improving various durability and rheology aspects of concrete such as deformability and segregation resistance. Recently, the studies on the application of nano-alumina (NA) produced from factory wastes have been significantly considered to enhancing the performance, and mechanical strength, of SCC. Many experimental works show that NA can be used in SCC with appropriate proportion to enjoy the benefits of improved microstructure, fresh and hardened properties, durability, and resistance to elevated temperature. However, a limited detailed review is available to particularly study using NA to improve the performance of SCC, so far. Hence, the present study is conducted to fill the existing gap of knowledge. In this study, the effect of using NA in improving rheological, mechanical parameters, and elevated temperature resistance of SCC is reviewed. This research summarized the studies in this area, which have been different from the previous researches, and provided a discussion on limitations, practical implications, and suggestions for future studies.

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Characterization, hydration, durability of nano-Fe2O3-composite cements subjected to sulphates and chlorides media

Cited by 29 publications

References 38 publications

De-aluminated metakaolin-cement composite modified with commercial titania as a new green building material for gamma-ray shielding applications

De-aluminated metakaolin-cement composite modified with commercial titania as a new green building material for gamma-ray shielding applications

Recent Advancements in the Nanomaterial Application in Concrete and Its Ecological Impact

Effect of Alumina Additives on Mechanical and Fresh Properties of Self-Compacting Concrete: A Review

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