Effect of Micro Tio2 on Cement Mortar

Shaaban, Ibrahim G.; Elsayad, Hanaa I.; Moussa, Sahar A.

doi:10.36868/ejmse.2020.05.02.058

Cited by 14 publications

(6 citation statements)

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“…The possibility remains open that composite samples with more than 5% nano-TiO 2 are antibacterial effective if adequate nanoparticle dispersion is ensured. This range of identified nano-TiO 2 amount is consistent with reports in the literature [ 36 , 37 , 38 , 39 , 40 , 41 , 42 , 51 , 52 , 53 , 54 , 55 , 56 ].…”

Section: Discussionsupporting

confidence: 91%

Influence of TiO2 Nanoparticles on the Resistance of Cementitious Composite Materials to the Action of Bacteria

et al. 2021

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The formation of biofilms on cementitious building surfaces can cause visible discoloration and premature deterioration, and it can also represent a potential health threat to building occupants. The use of embedded biofilm-resistant photoactivated TiO2 nanoparticles at low concentrations in the cementitious composite matrix is an effective method to increase material durability and reduce maintenance costs. Zone of inhibition studies of TiO2-infused cementitious samples showed efficacy toward both Gram-negative and Gram-positive bacteria.

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Section: Discussionsupporting

confidence: 91%

Influence of TiO2 Nanoparticles on the Resistance of Cementitious Composite Materials to the Action of Bacteria

et al. 2021

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“…On the other hand, Shaaban et al [69] reported that NT increased the carbonation resistance of mortars. They investigated the effect of nano-TiO2 on the carbonation depth of mortar exposed to CO2 gas for different time periods (28, 56 and 90 days).…”

Section: Effect On Carbonation Resistancementioning

confidence: 99%

“…However, exceeding the optimum content led to a reduction in the workability of around 11%. Shaaban et al [69] stated that NT inclusion in mortars dramatically decreased their workability and made the mixture sticky and dry as NT content increased. Dantas et al [62] reported that the flow depended on the type of nano-titania incorporated and on the dispersion technique used to disperse the nanoparticles in the mixture.…”

Section: Effect On Fresh Propertiesmentioning

confidence: 99%

“…After 50 sulfate dry-wet cycle, the mass loss percentage was 3.7% and 1.4% and the compressive strength loss percentage was 39.5% and 35.6% for concrete with and without NT, respectively. Shaaban et al [69] studied the impact of incorporation of 3.0, 6.0 and 9.0 wt% titania nanoparticles into mortars on their sulfate attack resistance. They showed that as the content of NT increased, mass loss importantly decreased, which indicated a remarkable increase in the resistance to sulfate attack.…”

Section: Effect On Sulfate Attack Resistancementioning

confidence: 99%

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A review of the effect and optimization of use of nano-TiO2 in cementitious composites

Döndüren¹,

Al-Hagri²

2022

Res. Eng. Struct. Mat.

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There are some problems and weaknesses related to cement-based materials, such as their very low tensile strength, low chemical resistance and the huge contribution of cement production to industrial CO2 emissions. One possible method to reduce the impacts of such problems is the partial replacement of cement in cementitious materials with nano materials. This work provides a detailed review of incorporation of one of the most widely used nano materials, namely nano-titanium dioxide, and its effect on the properties of cementitious composites. Different properties have been considered in the current study, such as fresh properties, mechanical properties (compressive strength, split tensile strength and flexural strength), durability (permeability, ultrasonic pulse velocity (UPV), electrical resistivity, carbonation resistance, freeze and thaw resistance and sulfate attack resistance) and microstructural properties. This paper also investigates the optimum content of nano-TiO2 in cement-based materials. Moreover, the cost effectiveness of use on nano-titania in cementitious composites has been discussed. Nano titania reduces the workability and setting time of cement-based materials. It can be very effective in improving the mechanical properties, durability and microstructural properties of cementitious composites.

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“…As for cementitious composites enriched with 3% and 5% TiO 2 nanoparticles, it has been shown that the viability rate of E-coli bacteria is reduced after 24 h by 60% to 70%, compared to the situation without TiO 2 nanoparticles, according to the study reported by Hamdany [ 106 ]. The results of this research agree with reports by Davidson et al [ 107 ], Lorenzeti et al [ 108 ] and Peng et al [ 109 ].…”

Section: Cementitious Composites With Self-cleaning Capacitymentioning

confidence: 93%

Study on the Possibilities of Developing Cementitious or Geopolymer Composite Materials with Specific Performances by Exploiting the Photocatalytic Properties of TiO2 Nanoparticles

et al. 2023

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Starting from the context of the principles of Sustainable Development and Circular Economy concepts, the paper presents a synthesis of research in the field of the development of materials of interest, such as cementitious composites or alkali-activated geopolymers. Based on the reviewed literature, the influence of compositional or technological factors on the physical-mechanical performance, self-healing capacity and biocidal capacity obtained was analyzed. The inclusion of TiO2 nanoparticles in the matrix increase the performances of cementitious composites, producing a self-cleaning capacity and an anti-microbial biocidal mechanism. As an alternative, the self-cleaning capacity can be achieved through geopolymerization, which provides a similar biocidal mechanism. The results of the research carried out indicate the real and growing interest for the development of these materials but also the existence of some elements still controversial or insufficiently analyzed, therefore concluding the need for further research in these areas. The scientific contribution of this study consists of bringing together two apparently distinct research directions in order to identify convergent points, to create a favorable framework for the development of an area of research little addressed so far, namely, the development of innovative building materials by combining improved performance with the possibility of reducing environmental impact, awareness and implementation of the concept of a Circular Economy.

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Effect of Micro Tio2 on Cement Mortar

Cited by 14 publications

References 0 publications

Influence of TiO2 Nanoparticles on the Resistance of Cementitious Composite Materials to the Action of Bacteria

Influence of TiO2 Nanoparticles on the Resistance of Cementitious Composite Materials to the Action of Bacteria

A review of the effect and optimization of use of nano-TiO2 in cementitious composites

Study on the Possibilities of Developing Cementitious or Geopolymer Composite Materials with Specific Performances by Exploiting the Photocatalytic Properties of TiO2 Nanoparticles

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