Characteristics of Cement Concrete with Nano Alumina Particles

Jaishankar, P.; Karthikeyan, C.

doi:10.1088/1755-1315/80/1/012005

Cited by 19 publications

(7 citation statements)

References 8 publications

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“…The compressive strength clearly increases along with the quantity of MNB. Nanomaterials, due to their large specific surface, are characterized by increased chemical reactivity, which is suggested by the afore-mentioned literature sources [ 10 , 11 , 12 , 13 , 14 , 15 ]. The application of micro-nano gas bubble water could accelerate the chemical reaction in the course of curing.…”

Section: Resultsmentioning

confidence: 99%

“…The concrete with nano TiO 2 acquires the self-cleaning properties [ 13 ]. Nano aluminum oxide improves the concrete microstructure, increases the compressive strength and reduces the binding time [ 14 ]. Introduction of graphene oxide to the cement slurry increases the hydration degree and reduces the structure of pores, contributing to improved compressive and tensile strength, even up to 40% [ 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Physical Properties and Durability of Lime-Cement Mortars Prepared with Water Containing Micro-Nano Bubbles of Various Gases

et al. 2021

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The paper presents the experimental studies on the effect of the water containing micro-nano bubbles of various gases on the physico-mechanical properties of lime-cement mortars. In total, 7 types of mortars were prepared: with water containing the micro-nano bubbles of O2, O3 or CO2 as 50% or 100% substitute of ordinary mixing water (tap water) and the reference mortar prepared using tap water. In order to determine the influence of water with micro-nano bubbles of gases, the consistency of fresh mortar and the physical properties of hardened mortar, i.e., specific and apparent density, total porosity, water absorption by weight and capillary absorption, were established. The mechanical strength of the considered mortars was studied as well by conducting the tests for flexural and compressive strengths following 14, 28 and 56 days. Reduced workability and capillary absorption were observed in the modified mortars within the range of 0.9–8.5%. The mortars indicated an increase in the flexural strength after 28 days ranging from 3.4% to 23.5% and improved compressive strength in 1.2–31%, in comparison to the reference mortar. The conducted studies indicated increased flexural and compressive strengths along with the share of micro-nano bubbles of gases in the mixing water.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Physical Properties and Durability of Lime-Cement Mortars Prepared with Water Containing Micro-Nano Bubbles of Various Gases

et al. 2021

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“…Nano-silica can improve the durability, workability and mechanical properties of cement-based materials [51,52,53,54,55,56,57,58,59]. On other hand, nano-Al 2 O 3 particles can increase the compressive strength of cement-based materials [41,60,61,62,63]. Al 2 O 3 nanofibers with a dosage of 0.25% by cement weight may enhance the compressive strength of cement-based materials by up to 30% [50].…”

Section: Introductionmentioning

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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“…An increase of more than 33% in compressive strength and reduced initial setting time has been reported for cement concrete with 1% nano-Al2O3 when compared with the reference concrete [15]. In another study, different dosages of nano-Al2O3 (0.5%, 1.0%, 1.5% and 2.0% by wt.…”

Section: Introductionmentioning

confidence: 93%

A Comparative Study of Al2O3, ZnO and Bentonite Effect on Structural Grade Mortar

Paul¹,

Babafemi²,

Miah³

2021

World Congress on Civil, Structural, and Environmental Engineering

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In recent years, nanoparticles have gained much attention in producing cementitious materials to modify both fresh and hardened properties, including their long-term durability characteristics. Due to its higher fineness and surface area, superior pozzolanic properties, nanoparticles have shown more significant improvement in cementitious materials' microstructure. Additionally, some micro filler materials also can improve the properties of hardened cementitious materials by filling up the micropores. Within this context, the focus of this paper is to investigate the optimum dosages of nano-Al2O3, nano-ZnO and bentonite in the production of medium strength (about 25-35 MPa) structural grade mortar. For the characterisation of materials properties, a compressive strength test is performed. The experimental results showed that up to a certain dosage of both nano-Al2O3 and bentonite, compressive strength is increased. After that, increasing dosages lead to a decrease in strength. However, strength can be significantly reduced when nano-ZnO is used in the mix.

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Characteristics of Cement Concrete with Nano Alumina Particles

Cited by 19 publications

References 8 publications

Physical Properties and Durability of Lime-Cement Mortars Prepared with Water Containing Micro-Nano Bubbles of Various Gases

Physical Properties and Durability of Lime-Cement Mortars Prepared with Water Containing Micro-Nano Bubbles of Various Gases

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

A Comparative Study of Al2O3, ZnO and Bentonite Effect on Structural Grade Mortar

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