Contribution of TiO2 and ZnO nanoparticles to the hydration of Portland cement and photocatalytic properties of High Performance Concrete

Amor, F.; Baudys, Michal; Rácová, Zuzana; Scheinherrová, Lenka; Ingrišová, Lenka; Hájek, Petr

doi:10.1016/j.cscm.2022.e00965

Cited by 21 publications

(16 citation statements)

References 32 publications

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“…Samples with 2% TiO 2 had as much as 17% enhancement in the compressive strength. The reduction in strength observed in samples containing ZnO can be attributed to the formation of calcium zinc hydroxide dihydrate (CaZn 2 (OH) 6 •2H 2 O) as a result of the reaction between formation ZnO and Ca(OH) 2 , leading to retardation of the concrete [26]. The interactive plots in Figure 2a,b revealed that for optimal performance in compressive strength of HPC with combinations of TiO 2 and ZnO.…”

Section: Resultsmentioning

confidence: 96%

Modelling of the Effects of Antimicrobial Agents on the Compressive Strength of High-Performance Concrete Using Response Surface Methodology

Adebanjo,

Shafiq,

Razak

et al. 2023

The 4th International Electronic Conference on Applied Sciences

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Section: Resultsmentioning

confidence: 96%

Modelling of the Effects of Antimicrobial Agents on the Compressive Strength of High-Performance Concrete Using Response Surface Methodology

Adebanjo,

Shafiq,

Razak

et al. 2023

The 4th International Electronic Conference on Applied Sciences

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“…Photocatalytic additives are a special type of modifiers that contribute to the creation of photocatalytically active cement systems characterized by a complex of positive properties, such as self-cleaning ability, decompose atmospheric air pollutants, eliminate unwanted odors, etc. [12][13][14]. The widespread use of photocatalytically active self-cleaning cement materials in the construction industry will allow to implement the basic provisions of 'green building' concept.…”

Section: Introductionmentioning

confidence: 99%

Chemical activity score of siliceous rocks in development of self-cleaning cement material

Balykov,

Chugunov,

Davydova

2024

E3S Web Conf.

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The development of photocatalytically active cement materials characterized by a complex of positive properties, such as self-cleaning ability, decompose atmospheric air pollutants, eliminate unwanted odors, etc., is actual scientific direction in the field of building materials science. It is known that ‘core-shell’ compositions obtained by precipitation of photocatalyst particles on dispersed carriers (substrates) are one of the effective types of photocatalytic additives for cement systems. It should be noted that mineral raw materials of various genesis can act as a substrate. Foreign and domestic experience in obtaining ‘core-shell’ photocatalytic systems for cement materials shows that the type of photocatalytic agent carrier has a primary influence on the final parameters of the synthesized composite modifier. The purpose of this study was to establish patterns of influence of the composition of 3 types of opal-cristobalite rocks (diatomite, trepel, opoka) on their chemical activity. It was identified that the reactivity of siliceous rocks grows in the order of trepel → opoka → diatomite. Meanwhile, it was recorded that increase in the content of opal silica in the composition contributed to growth in the sedimentary rock reactivity. The obtained research results indicate the prospects of using diatomite and opoka as dispersed carriers of photocatalytic agents in the composition of self-cleaning cement concretes.

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“…Moreover, the nanocomponents can act as a filler, leading to a reduction in the porosities of concrete and an increase in the packing density [22]. The introduction of nanomaterials to the cementitious matrix also imparts special properties to the concrete, such as photocatalytic properties [23,24], antimicrobial properties [6], selfcleaning performance [25], thermal insulation [17], and electrical conductivity [26]. Based on this knowledge, introducing nanoparticles into the cementitious matrix can lead to the formation of new materials and could be a part of the concept in developing new, smart buildings in the future.…”

Section: Introductionmentioning

confidence: 99%

Synergistic Effect of Combined Polymorphs Anatase-Rutile Nano-Modified Lightweight Concrete on Photocatalytic Reduction of NOx, Self-Cleaning Performance, and Antimicrobial Properties

Kujawa

Didyk-Mucha²,

Olewnik-Kruszkowska

et al. 2023

Buildings

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Anatase, one of the polymorphs of titanium dioxide (TiO2), has become the most widely used semiconductor for photocatalytic materials due to its chemical and physical properties. However, researchers have been studying the use of alternative materials (e.g., ZnO, N-doped, and C-doped TiO2) to improve the photocatalytic activity of cementitious materials. In this paper, we propose a modification of lightweight concrete by introducing mixed phases of titanium dioxide—anatase and rutile—to enhance its photocatalytic performance. The efficiency of NOx degradation of nano TiO2-modified concrete, its self-cleaning performance, and its antimicrobial properties were studied. The photocatalytic activity of lightweight concrete without TiO2 and concrete with the addition of anatase, rutile, and anatase-rutile was compared. The results show that modifying the samples by adding a mixture of anatase and rutile (2.5 wt % A + 2.5 wt % R) significantly improved the photocatalytic performance of lightweight concrete.

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Contribution of TiO2 and ZnO nanoparticles to the hydration of Portland cement and photocatalytic properties of High Performance Concrete

Cited by 21 publications

References 32 publications

Modelling of the Effects of Antimicrobial Agents on the Compressive Strength of High-Performance Concrete Using Response Surface Methodology

Modelling of the Effects of Antimicrobial Agents on the Compressive Strength of High-Performance Concrete Using Response Surface Methodology

Chemical activity score of siliceous rocks in development of self-cleaning cement material

Synergistic Effect of Combined Polymorphs Anatase-Rutile Nano-Modified Lightweight Concrete on Photocatalytic Reduction of NOx, Self-Cleaning Performance, and Antimicrobial Properties

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