The effect of TiO2 nanoparticles on water permeability and thermal and mechanical properties of high strength self-compacting concrete

Nazari, Ali; Riahi, Shadi

doi:10.1016/j.msea.2010.09.074

Cited by 151 publications

(67 citation statements)

References 29 publications

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“…The chemical and physical properties of the cement are shown in Table 1. In addition, the distribution pattern of cement particles determined by BET method has been illustrated in the previous works [18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35] . Nano-ZnO 2 with average particle size of 15 nm producing from Suzhou Fuer Import&Export Trade Co., Ltd was used as received.…”

Section: Methodsmentioning

confidence: 99%

“…In our previous works [22][23][24][25][26][27][28][29][30][31][32][33][34][35] , we tried to investigate the effects of different nanoparticles such as SiO 2 [18][19][20][21] , TiO 2 [22][23][24][25] , Al 2 O 3 [26,27] , ZnO 2 [28] , ZrO 2 [29][30][31] , Fe 2 O 3 [32] , Cr 2 O 3 [33,34] and CuO [35] nanoparticles on different concrete admixtures. In the all works [22][23][24][25][26][27][28][29][30][31][32][33][34][35] , we found that nanoparticles can act as heterogeneous nuclei for cement pastes, further accelerating cement hydration because of their high reactivity, as nano-reinforcement, and as nanofiller, densifying the microstructure, thereby, leading to a reduced porosity. The most significant issue for all nanoparticles is that of effective dispersion.…”

Section: Introductionmentioning

confidence: 99%

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The Effects of ZnO2 nanoparticles on strength assessments and water permeability of concrete in different curing media

Nazari

Riahi

2011

Mat. Res.

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In this study, the effect of limewater on strength assessments and percentage of water absorption of concrete incorporating ZnO 2 nanoparticles has been investigated. Portland cement was partially replaced by ZnO 2 nanoparticles with the average particle size of 15 nm and the specimens were cured in water and saturated limewater for specific ages. The results indicate that ZnO 2 nanoparticles up to 2.0 weight percent could produce concrete with improved strength and water permeability when the specimens cured in saturated limewater while this content is 1.0 weight percent for the specimens cured in tap water. Although the limewater reduces the strength of concrete without nanoparticles when compared with the specimens cured in water, curing the specimens bearing ZnO 2 nanoparticles in saturated limewater results in more strengthening gel formation around nanoparticles causes improved permeability together with high strength. In addition, ZnO 2 nanoparticles are able to act as nanofillers and recover the pore structure of the specimens by decreasing harmful pores. Accelerated peak appearance in conduction calorimetry tests, more weight loss in thermogravimetric analysis and more rapid appearance of peaks related to hydrated products in X-ray diffraction results, all indicate that ZnO 2 nanoparticles could improve mechanical and physical properties of the specimens.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Effects of ZnO2 nanoparticles on strength assessments and water permeability of concrete in different curing media

Nazari

Riahi

2011

Mat. Res.

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“…replacements (N3-GGBFS series) and then it decreases, although adding 4.0 percent ZnO 2 nanoparticles produces specimens with much higher flexural strength with respect to the all other C0-GGBFS concretes. In the previous works [33][34][35][36][37][38][39][40][41][42][43] it was shown that using up to 4.0 wt. (%) of nanoparticles in self compacting concrete could improve the flexural strength of the specimens.…”

Section: Properties Of C0-ggbfs Specimensmentioning

confidence: 99%

“…There are a few studies on incorporating nano-Fe 2 O 3 [28] , nano-Al 2 O 3 [29] , and nanoclay particles 30,31 . Previously, the effects of SiO 2 [32] , TiO 2 [33][34][35] and ZnO 2 [36,37] nanoparticles on different properties of self-compacting concrete have been studied. In addition, in a series of works [38][39][40][41][42][43] , the effects of several types of nanoparticles on properties of concrete specimens which are cured in different curing media have been investigated.…”

Section: Introductionmentioning

confidence: 99%

The effects of ZnO2 nanoparticles on properties of concrete using ground granulated blast furnace Slag as binder

Nazari

Riahi

2011

Mat. Res.

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In the present study, flexural strength together with pore structure, thermal behavior and microstructure of concrete containing ground granulated blast furnace slag with different amount of ZnO 2 nanoparticles has been investigated. Portland cement was replaced by different amounts of ground granulated blast furnace slag and the properties of concrete specimens were investigated. Although it negatively impact the properties of concrete, ground granulated blast furnace slag was found to improve the physical and mechanical properties of concrete up to 45 wt. (%). ZnO 2 nanoparticles with the average particle size of 15 nm were added partially to concrete with the optimum content of 45 wt. (%) of ground granulated blast furnace slag and physical and mechanical properties of the specimens was measured. ZnO 2 nanoparticle as a partial replacement of cement up to 3 wt. (%) could accelerate C-S-H gel formation as a result of increased crystalline Ca(OH) 2 amount at the early age of hydration and hence increase flexural strength of concrete. The increased the ZnO 2 nanoparticles' content more than 3 wt. (%), causes the reduced the flexural strength because of the decreased crystalline Ca(OH) 2 content required for C-S-H gel formation together with unsuitable dispersion of nanoparticles in the concrete matrix. ZnO 2 nanoparticles could improve the pore structure of concrete and shift the distributed pores to harmless and few-harm pores.

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“…[8][9][10][11] показано, что добавление наночастиц TiO 2 до 4 мас.% в цементный порошок улучшает механические свойства цементного камня.…”

Section: Introductionunclassified

The Effect of Particle Size Distribution and the Nano-Sized Additives on the Quality of Annulus Isolation in Well Cementing

Suleimanov¹,

Veliyev²

2016

SOCAR Proceedings

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A b s t r a c tThe paper presents the comparative study of portland cement compressive strength dependence on nano-TiO 2 and nano-SiO 2 addition, as well as various fine modifications. It was shown the impact of nano-additives concentration, the specific surface area of the cement powder and particle size distribution on compressive strength changes while 1, 2, 7 and 28 day's period. The addition of nano-SiO 2 and nano-TiO 2 led to the increase of compressive strength at early stages of hardening by 35.71% and 37.14% respectively and 18% and 20% at a late stage. Compressive strength of the most finely dispersed cement sample (R-6) was higher by 112%, and 42% at early and later stages of hardening, respectively in compare with ordinary cement powder (P-1). To predict the strength of cement at different stages of hardening was obtained multiple regression equation with a high determination coefficient for early and late stage strength R2 = 0.92 and R2 = 0.95, respectively.

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The effect of TiO2 nanoparticles on water permeability and thermal and mechanical properties of high strength self-compacting concrete

Cited by 151 publications

References 29 publications

The Effects of ZnO2 nanoparticles on strength assessments and water permeability of concrete in different curing media

The Effects of ZnO2 nanoparticles on strength assessments and water permeability of concrete in different curing media

The effects of ZnO2 nanoparticles on properties of concrete using ground granulated blast furnace Slag as binder

The Effect of Particle Size Distribution and the Nano-Sized Additives on the Quality of Annulus Isolation in Well Cementing

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