Strengths and durability performances of blended cement concrete with TiO2 nanoparticles and rice husk ash

Praveenkumar, T. R.; Vijayalakshmi, M.; Meddah, Mohammed Seddik

doi:10.1016/j.conbuildmat.2019.05.045

Cited by 95 publications

(30 citation statements)

References 27 publications

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“…In addition, it could also enhance the particle packing density of the blended cement by filling up the nanopores and reducing both the larger pores as well as the overall porosity of the mix. This decreased the total specific volume of the pores; the refinement of the pore structure when up to 3 wt % nano-TiO 2 is used as a partial replacement of cement was also reported by Praveenkumar et al [34] and Nazari and Riahi [35,36].…”

Section: Resultssupporting

confidence: 62%

Photocatalytic Activity and Mechanical Properties of Cements Modified with TiO2/N

et al. 2019

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In this paper, studies of the mechanical properties and photocatalytic activity of new photoactive cement mortars are presented. The new building materials were obtained by the addition of 1, 3, and 5 wt % (based on the cement content) of nitrogen-modified titanium dioxide (TiO2/N) to the cement matrix. Photocatalytic active cement mortars were characterized by measuring the flexural and the compressive strength, the hydration heat, the zeta potential of the fresh state, and the initial and final setting time. Their photocatalytic activity was tested during NOx decomposition. The studies showed that TiO2/N gives the photoactivity of cement mortars during air purification with an additional positive effect on the mechanical properties of the hardened mortars. The addition of TiO2/N into the cement shortened the initial and final setting time, which was distinctly observed using 5 wt % of the photocatalyst in the cement matrix.

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Section: Resultssupporting

confidence: 62%

Photocatalytic Activity and Mechanical Properties of Cements Modified with TiO2/N

et al. 2019

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“…Supplementary cementitious materials have been a good choice for replacing cement and adding nanoparticles improves the performance of concrete. [21,22,23] Integration of nano silica with fly ash based geopolymer concrete has shown better results than the former. Nanotechnology being one of the most promising research fields in the growth and development of the modern industry has also been used to harness optimum results in the concrete industry by providing opportunities to improve the working of the concrete on molecular level and to enhance the properties of the materials.…”

Section: Introductionmentioning

confidence: 99%

Strength and Durability Performance of Fly Ash Based Geopolymer Concrete Using Nano Silica

Vyas

Sameer

Pal

et al. 2020

Int. J. Eng. Sci. Tech

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With the increasing infrastructure development across the globe, the demand of cement production increases day by day. However, the production of cement is associated with the emission of large amount of CO2 causing global warming. Scientist and engineers are in search of a green eco friendly alternative for concrete production. Geopolymers are rapidly emerging as an alternative to Portland cement as the binder of structural concrete. In this respect, the fly ash based geopolymers shows considerable prospect for application in concrete industry as an alternative binder to the Portland cement. Development of geopolymer concrete using class F fly ash brings many advantages like; enhancing workability, durability, better strength as well as lowering the price. There is not only a reduction in the greenhouse footprint but, also considerable increase in strength and resistivity to adverse conditions. In order to enhance the performance of Geopolymer concrete, the use of Nano-silica is found to be suitable and practiced by researchers. Use of Nano materials as fillers in the concrete matrix has proven effective in increasing mechanical and durability properties. This research is based on performance evaluation of geopolymer concrete using different percentage of Nano-silica.. It was observed that Geopolymer concrete with Nano-silica ( GPC-N) shows good compressive strength as well as durability under aggressive conditions. The materials performance were also investigated using X-Ray Diffraction technique. (XRD). Results show that the presence of nano silica enhanced the performance of Geopolymer concrete with respect to strength and durability purposes.

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“…Introduction of dispersed TiO 2 nanomolecules to concrete enabled the obtaining of a material with a self-cleaning surface [4]. The studies by Praveenkumar et al [5] on cement concrete with the addition of TiO 2 nanomolecules and 10% rice husk enabled the obtaining of a material with greater compressive and flexural strength, as well as enhanced resistance to the effect of chlorides and acids. The addition Quartz sand (0-2 mm) is characterized by specific gravity of 2650 kg/m 3 ; water absorption amounts to 1.2%, while the moisture content equals 0.16% [28].…”

Section: Introductionmentioning

confidence: 99%

Effect of Eco-Friendly Cellulose Nanocrystals on Physical Properties of Cement Mortars

et al. 2019

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Nanocellulose, being a material with nanodimensions, is characterized by high tensile strength, high modulus of elasticity, low thermal expansion, and relatively low density, as well as exhibiting very good electrical conductivity properties. The paper presents the results of research on cement mortars with the addition of nanocrystals cellulose, applied in three different amounts (0.5%, 1.0%, and 1.5%) by weight of cement, including: physical and mechanical properties, frost resistance and resistance against the detrimental effect of salt, and microstructure examination (SEM). Along with an increase in amount of admixture, the weight loss following frost resistance and salt crystallization tests is reduced. Studies have shown that the addition of nanocrystalline cellulose improves the compressive and flexural strength by 27.6% and 10.9%, respectively. After 50 freezing and thawing (F-T) cycles for the mortars with 1.5% nanocellulose admixture, an improvement in frost resistance by 98% was observed. In turn, the sulfate crystallization tests indicated a 35-fold decrease in weight loss following 1.5% nanopolymer addition to the mortar.

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Strengths and durability performances of blended cement concrete with TiO2 nanoparticles and rice husk ash

Cited by 95 publications

References 27 publications

Photocatalytic Activity and Mechanical Properties of Cements Modified with TiO2/N

Photocatalytic Activity and Mechanical Properties of Cements Modified with TiO2/N

Strength and Durability Performance of Fly Ash Based Geopolymer Concrete Using Nano Silica

Effect of Eco-Friendly Cellulose Nanocrystals on Physical Properties of Cement Mortars

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