Microstructure, characterizations, functionality and compressive strength of cement-based materials using zinc oxide nanoparticles as an additive

Nochaiya, Thanongsak; Sekine, Yoshika; Choopun, Supab; Chaipanich, Arnon

doi:10.1016/j.jallcom.2014.11.043

Cited by 111 publications

(57 citation statements)

References 35 publications

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“…The strong absorption bands observed in 1137, 1124 cm -1 and the weak vibration band at 643 cm -1 represented the stretching vibration of the sulfate group (SO 4 2-) [22,23,24]. These results of FTIR analysis are consistent with the results found in the previous analysis.…”

Section: Fourier Transforms Infrared Spectra (Ftir)supporting

confidence: 90%

The benefic effect of Moroccan oil shale’s ash on blended cement (CMII)

2018

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Abstract.Recycling of Tarfaya's oil shales (OSA) was conducted for two essential reasons: First, to follow the change of their mineralogical composition with the heat treatment and second to investigate the possibility of their use in building materials. The mineral compositions and the mineralogical transformations of the oil shale during their thermal treatment were followed respectively by X-ray fluorescence (XRF), by X-ray diffraction analysis (XRD) and Fourier transform infrared (FTIR). The XRF showed that the mineral composition of the ash burned at 850°C is similar to that of Portland clinker and the DRX showed the presence of quartz, mayenite, gehlenite, anydrite, hematite and lime as well as the existence of some characteristics phases of the clinker as C 2 S, C 3 A and C 4 AF. The Infrared spectrum showed the various functional groups that exist in OSA. The substitution of cement CMII by OSA increased the content of free lime and Blaine specific surface. The ash influenced beneficially the mechanical strength of the blended cement. The best results were obtained at all times of curing (2, 7, 28 and 91 Days) for the substitution of CMII by 7 and 10 % of OSA.

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Section: Fourier Transforms Infrared Spectra (Ftir)supporting

confidence: 90%

The benefic effect of Moroccan oil shale’s ash on blended cement (CMII)

2018

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“…Changes in the properties of the mortars can have a strong influence on the feasibility of the photocatalyst incorporation, such as modifications in the hydration times or in the mechanical strengths. Literature has shown that the incorporation of nano-structured additives within binding mortars modifies the mixing water requirements, thus impacting the mechanical properties [20,21,22,23]. Although bare titania has been described as a non-pozzolanic additive, the presence of TiO 2 with small particle size has led to an acceleration of the hydration in Portland cement (mortars by increasing the number of nucleation sites [24].…”

Section: Introductionmentioning

confidence: 99%

The Effect of TiO2 Doped Photocatalytic Nano-Additives on the Hydration and Microstructure of Portland and High Alumina Cements

et al. 2017

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Mortars with two different binders (Portland cement (PC) and high alumina cement (HAC)) were modified upon the bulk incorporation of nano-structured photocatalytic additives (bare TiO2, and TiO2 doped with either iron (Fe-TiO2) or vanadium (V-TiO2)). Plastic and hardened state properties of these mortars were assessed in order to study the influence of these nano-additives. Water demand was increased, slightly by bare TiO2 and Fe-TiO2, and strongly by V-TiO2, in agreement with the reduction of the particle size and the tendency to agglomerate. Isothermal calorimetry showed that hydration of the cementitious matrices was accelerated due to additional nucleation sites offered by the nano-additives. TiO2 and doped TiO2 did not show pozzolanic reactivity in the binding systems. Changes in the pore size distribution, mainly the filler effect of the nano-additives, accounted for the increase in compressive strengths measured for HAC mortars. A complex microstructure was seen in calcium aluminate cement mortars, strongly dependent on the curing conditions. Fe-TiO2 was found to be homogeneously distributed whereas the tendency of V-TiO2 to agglomerate was evidenced by elemental distribution maps. Water absorption capacity was not affected by the nano-additive incorporation in HAC mortars, which is a favourable feature for the application of these mortars.

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“…Researchers have been engaged in investigating the fundamental factors, such as, homogeneous structure, 3D-complex, non-linear behaviour, low specific density, etc., that influence the compression deformation behaviour of Al-alloy foams in diverse loading conditions. Studies have also been conducted to examine the effect of diverse strain rates on the deformation response of Al-alloy foams [16][17][18][19]. The energy absorption capacity of the foams depends on plateau stress and densification strain.…”

Section: A N U S C R I P Tmentioning

confidence: 99%