Enhanced shear behaviour of reinforced concrete beams containing Nano-Titanium

Mustafa, T.S.; Hariri, Mohamed O.R. El; Nader, Marina A.; Montaser, Wael M.

doi:10.1016/j.engstruct.2022.114082

Cited by 7 publications

(6 citation statements)

References 9 publications

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“…The highest values of the tensile strength compared to the other studies was reported in [70]. It this case, the addition of 15% silica fume proved its efficiency [70].…”

Section: Splitting Tensile Strengthmentioning

confidence: 71%

“…The highest values of the tensile strength compared to the other studies was reported in [70]. It this case, the addition of 15% silica fume proved its efficiency [70]. The lowest values were obtained for the self-consolidated concrete specimens and plain concrete, respectively, both modified with various TiO 2 percentages [81,82].…”

Section: Splitting Tensile Strengthmentioning

confidence: 94%

“…All samples registered a decrease in the values of mechanical properties after a certain TiO 2 quantity when the high number of particles increased the probability of flocculation and thus stress concentrations could occur. Moreover, as in the nanoclay case, when introducing a higher quantity of nanomaterial than the one needed for CH hydration, an excess of silica is available, resulting in a deficiency in strength [70]. The TiO 2 optimum percentage, from which this decrease initiated, and emphasized in Table 8, is not well defined when considering all the studies.…”

Section: Compressive Strength Values Obtained At Room Temperaturementioning

confidence: 98%

“…Afterwards, the waternanomaterials solution is added to the dry mix, the rest of the water is added and a final mixing is performed. If there was fiber reinforcement to be added, e.g., PP fibers, it is introduced into the matrix in the final step and mixed again [58,[69][70][71].…”

Section: Input Of Tio 2 Particles In Cementitious Materials-technolog...mentioning

confidence: 99%

“…The first one is the dispersion difficulties that emerge when adding high percentages of nanoparticles as it increases the probability of agglomeration occurring. The second one is that if the quantity of TiO 2 was greater than the quantity needed for CH hydration, an excess of silica would be found inside the cement matrix, leading to a decrease in strength [70,81]. This percentage varies, but the majority of the listed research works showed that 1% cement replacement with TiO 2 is the quantity for which a maximum value of the tensile strength was obtained in case of concrete specimens [70,78,81].…”

Section: Splitting Tensile Strengthmentioning

confidence: 99%

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Use of Clay and Titanium Dioxide Nanoparticles in Mortar and Concrete—A State-of-the-Art Analysis

et al. 2023

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In the past decades, nanomaterials have become one of the focal points in civil engineering research. When added to cement-based construction materials (e.g., concrete), it results in significant improvements in their strength and other important properties. However, the final mix characteristics depend on many variables that must be taken into account. As such, there is no general consensus regarding the influence upon the original material of certain nano-sized additives, the optimum dosage or the synergistic effect of two or more nano-materials. This is also the case for titanium dioxide (TiO2) and nanoclay (NC). The paper focuses on reporting the existing research data on the use of the above-mentioned materials when added to mortar and concrete. The collected data is summarized and presented in terms of strength and durability properties of cement mortar and concrete containing either TiO2 or NC. Both nano-materials have been proven, by various studies, to increase the strength of the composite, at both room and elevated temperature, when added by themselves in 0.5%~12% for TiO2 and 0.25%~6% for NC. It can be inferred that a combination of the two with the cementitious matrix can be beneficial and may lead to obtaining a new material with improved strength, elastic and durability properties that can be applied in the construction industry, with implications at the economic, social and environmental levels.

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“…The highest values of the tensile strength compared to the other studies was reported in [70]. It this case, the addition of 15% silica fume proved its efficiency [70].…”

Section: Splitting Tensile Strengthmentioning

confidence: 71%