Comparative study on fresh, mechanical, microstructures properties and corrosion resistance of self compacted concrete incorporating nanoparticles extracted from industrial wastes under various curing conditions

Fahmy, Naglaa G.; Hussien, Reham M.; El-Hafez, L.M. Abd; Mohamed, R.A.S.; Faried, A. Serag

doi:10.1016/j.jobe.2022.104874

Cited by 2 publications

(2 citation statements)

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“…The usage of DSC and TGA [ 51 ] in thermal analyses showed that concrete with varying nanoparticles had increased C-S-H gel and a significant decrease in CH contents. The XRD patterns for 28-day concrete with 3 wt.% nanowaste glass (NWG) and 3 wt.% nanowaste ceramic (NWC) [ 53 ] are illustrated in Figure 3 .…”

Section: Microstructure Of Concrete and C-s-h Gel Hydration With Nano...mentioning

confidence: 99%

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An Elucidative Review of the Nanomaterial Effect on the Durability and Calcium-Silicate-Hydrate (C-S-H) Gel Development of Concrete

Al-saffar,

Wong,

Paul

2023

Gels

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Concrete as a building material is susceptible to degradation by environmental threats such as thermal diffusion, acid and sulphate infiltration, and chloride penetration. Hence, the inclusion of nanomaterials in concrete has a positive effect in terms of promoting its mechanical strength and durability performance, as well as resulting in energy savings due to reduced cement consumption in concrete production. This review article discussed the novel advances in research regarding C-S-H gel promotion and concrete durability improvement using nanomaterials. Basically, this review deals with topics relevant to the influence of nanomaterials on concrete’s resistance to heat, acid, sulphate, chlorides, and wear deterioration, as well as the impact on concrete microstructure and chemical bonding. The significance of this review is a critical discussion on the cementation mechanism of nanoparticles in enhancing durability properties owing to their nanofiller effect, pozzolanic reactivity, and nucleation effect. The utilization of nanoparticles enhanced the hydrolysis of cement, leading to a rise in the production of C-S-H gel. Consequently, this improvement in concrete microstructure led to a reduction in the number of capillary pores and pore connectivity, thereby improving the concrete’s water resistance. Microstructural and chemical evidence obtained using SEM and XRD indicated that nanomaterials facilitated the formation of cement gel either by reacting pozzolanically with portlandite to generate more C-S-H gel or by functioning as nucleation sites. Due to an increased rate of C-S-H gel formation, concrete enhanced with nanoparticles exhibited greater durability against heat damage, external attack by acids and sulphates, chloride diffusion, and surface abrasion. The durability improvement following nanomaterial incorporation into concrete can be summarised as enhanced residual mechanical strength, reduced concrete mass loss, reduced diffusion coefficients for thermal and chloride, improved performance against sulphates and acid attack, and increased surface resistance to abrasion.

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Section: Microstructure Of Concrete and C-s-h Gel Hydration With Nano...mentioning

confidence: 99%

“…Q = unhydrated SiO 2 , E = ettringite, CSH = calcium silicate hydrate, and CH = calcium hydroxide. Reproduced with permission from [ 53 ] ( Journal of Building Engineering ); published by (Elsevier), (2022).…”

Section: Figurementioning

confidence: 99%

An Elucidative Review of the Nanomaterial Effect on the Durability and Calcium-Silicate-Hydrate (C-S-H) Gel Development of Concrete

Al-saffar,

Wong,

Paul

2023

Gels

View full text Add to dashboard Cite

show abstract

Integration of new technologies with sustainable concrete materials and structures

Hosseini

2024

Sustainable Concrete Materials and Structures

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Comparative study on fresh, mechanical, microstructures properties and corrosion resistance of self compacted concrete incorporating nanoparticles extracted from industrial wastes under various curing conditions

Cited by 2 publications

References 52 publications

An Elucidative Review of the Nanomaterial Effect on the Durability and Calcium-Silicate-Hydrate (C-S-H) Gel Development of Concrete

An Elucidative Review of the Nanomaterial Effect on the Durability and Calcium-Silicate-Hydrate (C-S-H) Gel Development of Concrete

Integration of new technologies with sustainable concrete materials and structures

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