Study on mechanical properties of ternary blended concrete containing two different sizes of nano-SiO2

Nazerigivi, Amin; Najigivi, Alireza

doi:10.1016/j.compositesb.2018.11.136

Cited by 40 publications

(11 citation statements)

References 27 publications

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“…e optimum doping amount has also been considered. e strength will decrease if it exceeds the optimal dosage mainly because a large amount of NS will aggregate and cannot be well dispersed in the mixture [47,74,76,77]. Amin and Abu el-Hassan [81] investigated the influence of the content of NS between 0% and 1.8% and basalt fiber with different contents on the compressive strength and tensile strength.…”

Section: Compressive Strengthmentioning

confidence: 99%

“…Also, for specimens containing Class F fly ash and nanosilica, BSEM showed higher degree of hydration at 28 days relative the control mixture containing only Class F fly ash. Nazerigivi and Najigivi showed that the addition of 80 nm SiO 2 nanoparticles in ternary blended concrete can fill the cement pores and produce much more C-S-H gel resulting in better mechanical performance of the ternary blended concrete with respect to control concrete [77]. e study of Supivt and Shaikh indicated that NS can react more rapidly with the free lime in the course of hydration reaction than fly ash, and more secondary C-S-H gel can be produced to fill into the microvoids due to the fairly tiny particle size and large specific surface area of SiO 2 nanoparticles in high volume fly ash concrete [73].…”

Section: Effect Of Different Nanomaterials Onmentioning

confidence: 99%

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A Critical Review on Effect of Nanomaterials on Workability and Mechanical Properties of High‐Performance Concrete

Zhang

Wang

Wei

et al. 2021

Advances in Civil Engineering

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The application of nanomaterials in high-performance concrete (HPC) has been extensively studied worldwide due to their large surface areas, small particle sizes, filling effects, and macroquantum tunneling effects. The addition of nanomaterials in HPC has great contribution to enhancing the pore size of the cementitious matrix, improving the hydration of cement, and making the matrix much denser. In order to present an exhaustive insight into the feasibility of HPC reinforced with nanomaterials, the new development of HPC was summarized and the influence of different nanomaterials on the properties of HPC was reviewed based on more than 100 recent studies in this literature review. Workability, compressive strength, tensile strength, and flexural strength properties of HPC with nanomaterials were discussed in detail. In addition, nanomaterial-modified HPC was compared with the traditional concrete and obtained a lot of valuable results. The results in the present review indicate that the addition of various nanomaterials improves the mechanical properties of HPC, while reducing the workability of HPC. However, there is an optimal dosage of nanomaterial for improving the mechanical properties of HPC. Improving the properties of HPC by adding nanomaterials is expected to become a mainstream technique in the future. This literature review can provide comprehensive and systematic knowledge to researchers and engineers working on HPC and promote the application of this new HPC in modern civil engineering.

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Section: Compressive Strengthmentioning

confidence: 99%

Section: Effect Of Different Nanomaterials Onmentioning

confidence: 99%

A Critical Review on Effect of Nanomaterials on Workability and Mechanical Properties of High‐Performance Concrete

Zhang

Wang

Wei

et al. 2021

Advances in Civil Engineering

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“…This strength value is 42.2% higher than that of the concrete sample without nano-silica and silica fume. More investigations about of nano-silica modified cement were reported by Nazerigivi and Najigivi [86]. They studied the influence on the mechanical strength of concrete specimens caused by incorporation of two different nano-silica sizes (15 nm and 80 nm) with percentages of 0.5%, 1.0%, 1.5% and 2.0% by cement weight.…”

Section: Nanomaterials In Cement-based Materialsmentioning

confidence: 99%

Recent Progress in Nanomaterials for Modern Concrete Infrastructure: Advantages and Challenges

et al. 2019

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Modern concrete infrastructure requires structural components with higher mechanical strength and greater durability. A solution is the addition of nanomaterials to cement-based materials, which can enhance their mechanical properties. Some such nanomaterials include nano-silica (nano-SiO2), nano-alumina (nano-Al2O3), nano-ferric oxide (nano-Fe2O3), nano-titanium oxide (nano-TiO2), carbon nanotubes (CNTs), graphene and graphene oxide. These nanomaterials can be added to cement with other reinforcement materials such as steel fibers, glass, rice hull powder and fly ash. Optimal dosages of these materials can improve the compressive, tensile and flexural strength of cement-based materials, as well as their water absorption and workability. The use of these nanomaterials can enhance the performance and life cycle of concrete infrastructures. This review presents recent researches about the main effects on performance of cement-based composites caused by the incorporation of nanomaterials. The nanomaterials could decrease the cement porosity, generating a denser interfacial transition zone. In addition, nanomaterials reinforced cement can allow the construction of high-strength concrete structures with greater durability, which will decrease the maintenance requirements or early replacement. Also, the incorporation of nano-TiO2 and CNTs in cementitious matrices can provide concrete structures with self-cleaning and self-sensing abilities. These advantages could help in the photocatalytic decomposition of pollutants and structural health monitoring of the concrete structures. The nanomaterials have a great potential for applications in smart infrastructure based on high-strength concrete structures.

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“…These cracks are formed in the process of fabrication or exploitation [ 3 ]. As the nanoscale cracks grow and expand over time, larger micro-scale cracks can develop, which may cause structural failures [ 4 , 5 , 6 ]. Timely detection of these intrinsic damages in initial phases can prevent their progression and the sudden collapse of structures and greatly minimize potential consequences of deterioration in the service life of structures [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Ultra-Sensitive Affordable Cementitious Composite with High Mechanical and Microstructural Performances by Hybrid CNT/GNP

2020

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In this paper a hybrid combination of carbon nanotubes (CNTs) and graphene nanoplatelets (GNPs) was used for developing cementitious self-sensing composite with high mechanical, microstructural and durability performances. The mixture of these two nanoparticles with different 1D and 2D geometrical shapes can reduce the percolation threshold to a certain amount which can avoid agglomeration formation and also reinforce the microstructure due to percolation and electron quantum tunneling amplification. In this route, different concentrations of CNT + GNP were dispersed by Pluronic F-127 and tributyl phosphate (TBP) with 3 h sonication at 40 °C and incorporated into the cementitious mortar. Mechanical, microstructural, and durability of the reinforced mortar were investigated by various tests in different hydration periods (7, 28, and 90 days). Additionally, the piezoresistivity behavior of specimens was also evaluated by the four-probe method under flexural and compression cyclic loading. Results demonstrated that hybrid CNT + GNP can significantly improve mechanical and microstructural properties of cementitious composite by filler function, bridging cracks, and increasing hydration rate mechanisms. CNT + GNP intruded specimens also showed higher resistance against climatic cycle tests. Generally, the trend of all results demonstrates an optimal concentration of CNT (0.25%) + GNP (0.25%). Furthermore, increasing CNT + GNP concentration leads to sharp changes in electrical resistivity of reinforced specimens under small variation of strain achieving high gauge factor in both flexural and compression loading modes.

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Study on mechanical properties of ternary blended concrete containing two different sizes of nano-SiO2

Cited by 40 publications

References 27 publications

A Critical Review on Effect of Nanomaterials on Workability and Mechanical Properties of High‐Performance Concrete

A Critical Review on Effect of Nanomaterials on Workability and Mechanical Properties of High‐Performance Concrete

Recent Progress in Nanomaterials for Modern Concrete Infrastructure: Advantages and Challenges

Ultra-Sensitive Affordable Cementitious Composite with High Mechanical and Microstructural Performances by Hybrid CNT/GNP

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