Effect of nano TiO2 on mechanical properties and microstructure of concrete

Pathak, Sudhanshu; Vesmawala, Gaurang R.

doi:10.1016/j.matpr.2022.05.161

Cited by 13 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In addition, the surface area as well as the small sizes of the nanoparticles makes them serve as filler materials that aids the densification of the concrete. These observations agree with the findings of Pathak and Vesmawala [23] and Choi et al [24] where both authors emphasized the importance of the size of the nanoparticles on the microstructural properties of the concrete.…”

Section: Effects Of Tio2 On Early Compressive Strength Of Hpcsupporting

confidence: 92%

Effect of nanosized titanium dioxide and zinc oxide as antimicrobial agents on early compressive strength of high-performance concrete

Usman Adebanjo,

Shafiq,

Abd Razak

et al. 2024

E3S Web of Conf.

View full text Add to dashboard Cite

Incorporation of antimicrobial agents in concrete can enhance the resistance of the concrete to biodeterioration. However, there is lack of adequate knowledge on the effect of antimicrobial agents on performance measures of high-performance concrete (HPC), particularly during early strength development, when the hydration reaction is ongoing, is not well understood. Therefore, the effect of antimicrobial agents on early compressive strength (CS) of HPC was investigated. The cement in HPC samples was partially replaced with nanosized titanium dioxide (TiO2) and zinc oxide (ZnO) by up to 2% by weight of the cement. Using response surface methodology, 21 combinations of TiO2 and ZnO contents were generated. The combinations were adopted for preparation of the samples. Individual and combined effects of TiO2 and ZnO on 7-day CS of the samples were evaluated. The standard form of the second-order response surface model is adopted to develop a model to fit the strength data. Statistics of the data verify that the model can be employed to predict the 7-day CS of HPC that employs nanosized TiO2 and ZnO as antimicrobial agents.

show abstract

Section: Effects Of Tio2 On Early Compressive Strength Of Hpcsupporting

confidence: 92%

Effect of nanosized titanium dioxide and zinc oxide as antimicrobial agents on early compressive strength of high-performance concrete

Usman Adebanjo,

Shafiq,

Abd Razak

et al. 2024

E3S Web of Conf.

View full text Add to dashboard Cite

show abstract

“…Such materials are usually referred to as micro- or nano-fillers, as they allow for the cement matrix’s densification by physically filling its micro- and nanopores. Although titanium dioxide does not have binding properties and is not treated as an additive of pozzolanic or latent hydraulic properties in concrete technology, it has been proven that its addition to a cementitious material can enhance its performance [ 41 ]. It is economically unfounded to consider the addition of TiO 2 in significant amounts with a sole focus on the enhancement of the mechanical properties of the composite (nanoparticulate TiO 2 is several times more expensive than any other ingredients of cementitious composites).…”

Section: Resultsmentioning

confidence: 99%

The Potential Risk of Nanoparticulate Release from Photocatalytic Pavement Concrete Surface Due to a Simulated Abrasion Load—An Experimental Study

Witkowski,

Jarosławski,

Szkop

et al. 2024

Materials

View full text Add to dashboard Cite

The risk of the releasing of nanometric particles from construction materials with nanometric components might be one of the biggest threats to further development of them. One of the possible ingress routes to human organisms is the respiratory system. Therefore, it is crucial to determine the risk of emission of nanometric particles during material usage. In the presented paper, abrasion of mortar samples with nanometric TiO2 was investigated. A special abrasion test setup was developed to reflect everyday abrasion of the concrete surface of pavements. In the study, three TiO2-modifed mortar series (and respective reference series) underwent the developed test protocol and the grains were mobilized from their surface due to the applied load analyzed (granulation, morphology, and chemical composition). For a comparative analysis, an abrasion parameter was developed. Based on the obtained results, the modification of cementitious composites with nanometric TiO2 contributed to a reduction in the emission of aerosols and, therefore, confirmed the compatibility between TiO2 and cement matrix.

show abstract

“…Numerous studies have found that nano-TiO 2 works as a catalyst in cement hydration processes, resulting in a considerable increase in the rate of early-age hydration of cementitious materials and a change in microstructure that influences the physical and mechanical characteristics of cement-based materials. Meng et al [92] examined the influence of TiO 2 on the mechanical characteristics of cement mortar. Due to the reduction and modification of the orientation index, the cement mortar's strength enhanced at early ages when nano-TiO 2 was substituted for cement.…”

Section: Titanium Dioxide Nanoparticles Precursor Materialsmentioning

confidence: 99%

The Suitability of Photocatalyst Precursor Materials in Geopolymer Coating Applications: A Review

et al. 2022

View full text Add to dashboard Cite

Today, the building and construction sector demands environmentally friendly and sustainable protective coatings using inorganic coating materials for safe, non-hazardous, and great performance. Many researchers have been working on sustainable solutions to protect concrete and metal infrastructures against corrosion and surface deterioration with the intention of introducing green alternatives to conventional coatings. This article presents a review of developments of geopolymer pastes doped with different types of photocatalyst precursors including factors affecting geopolymer properties for enhancing coating with photocatalytic performance. Photodegradation using geopolymer photocatalyst has great potential for resolving harmless substances and removing pollutants when energized with ultraviolet (UV) light. Although geopolymer is a potentially new material with great properties, there has been less research focusing on the development of this coating. This study demonstrated that geopolymer binders are ideal precursor support materials for the synthesis of photocatalytic materials, with a significant potential for optimizing their distinctive properties.

show abstract

Effect of nano TiO2 on mechanical properties and microstructure of concrete

Cited by 13 publications

References 9 publications

Effect of nanosized titanium dioxide and zinc oxide as antimicrobial agents on early compressive strength of high-performance concrete

Effect of nanosized titanium dioxide and zinc oxide as antimicrobial agents on early compressive strength of high-performance concrete

The Potential Risk of Nanoparticulate Release from Photocatalytic Pavement Concrete Surface Due to a Simulated Abrasion Load—An Experimental Study

The Suitability of Photocatalyst Precursor Materials in Geopolymer Coating Applications: A Review

Contact Info

Product

Resources

About