A study on mechanical and pressure-sensitive properties of cement mortar with nanophase materials

Li, Hui; Xiao, Huigang; Ou, Jinping

doi:10.1016/j.cemconres.2003.08.025

Cited by 435 publications

(203 citation statements)

References 4 publications

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“…Only, there are several reports on incorporation of nanoparticles in NVCs which most of them have focused on using SiO 2 nanoparticles [10][11][12][13][14][15][16][17][18][19] and TiO 2 nanoparticles 20,21 .…”

Section: Introductionmentioning

confidence: 99%

The effects of ZrO2 nanoparticles on physical and mechanical properties of high strength self compacting concrete

Nazari

Riahi

2010

Mat. Res.

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In this work, strength assessments and coefficient of water absorption of high performance self compacting concrete containing different amounts of ZrO 2 nanoparticles have been investigated. The results indicate that the strength and the resistance to water permeability of the specimens are improved by adding ZrO 2 nanoparticles in the cement paste up to 4.0 wt. (%). ZrO 2 nanoparticles, as a result of increased crystalline Ca(OH) 2 amount especially at the early age of hydration, could accelerate C-S-H gel formation and hence increase the strength of the concrete specimens. In addition, ZrO 2 nanoparticles are able to act as nanofillers and recover the pore structure of the specimens by decreasing harmful pores. Several empirical relationships have been presented to predict flexural and split tensile strength of the specimens by means of the corresponding compressive strength at a certain age of curing. Accelerated peak appearance in conduction calorimetry tests, more weight loss in thermogravimetric analysis and more rapid appearance of the peaks related to hydrated products in X-ray diffraction results, all indicate that ZrO 2 nanoparticles could improve mechanical and physical properties of the concrete specimens.

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Section: Introductionmentioning

confidence: 99%

The effects of ZrO2 nanoparticles on physical and mechanical properties of high strength self compacting concrete

Nazari

Riahi

2010

Mat. Res.

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“…The work of fracture of the C f -SiC f -Al 2 O 3p /KGP composites was much lower than the C f and SiC f reinforced ones. This may due to the addition of the Al 2 O 3p may increase the viscosity of the slurry and bring some defects and pores, which was sensitive to cracks [22,26]. Fig.5 shows the stress and displacement curves of C f -SiC f -(Al 2 O 3p )/KGP composites in x direction.…”

Section: Resultsmentioning

confidence: 99%

Preparation and mechanical performance of Cf-SiCf-(Al₂O₃p) reinforced geopolymer composites

Yan

Jia

et al. 2017

MATEC Web Conf.

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Abstract. The C f -SiC f -(Al 2 O 3p )/KGP composites were successfully prepared by the method that mixing a kind of hybrid fiber preform predeveloped and geopolymer resin. The synergistic effects of the hybrid fibers and Al 2 O 3 particles on the composites were investigated. Results show that all the composites showed typical amorphous structure. Mechanical properties of the C f -SiC f -(Al 2 O 3p )/KGP composites were improved remarkably due to the addition of the hybrid fibers and Al 2 O 3 particles. The flexural strength and Young s modulus of the C f -SiC fAl 2 O 3p /KGP composites with 1 mm length SiC f were reached 62.4±2.1 MPa and 24.1±1.6 GPa, respectively. The C f -SiC f -(Al 2 O 3p )/KGP composites showed non-catastrophic behavior rather than the catastrophic failure.

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“…Two signals can be distinguished on all test results: a peak corresponding to the acceleration or post-induction period, associated with the precipitation of C-S-H gel and CH, and a shoulder related to a second, weaker signal with a later peak time, associated with the transformation from the ettringite (AFt) to the calcium monosulphoaluminate (AFm) phase via dissolution and reaction with Al(OH) 4- [64] . The numerical values corresponding to these two signals (heat release rate, peak times) and the total released heat are shown in Table 7.…”

Section: Conduction Calorimetrymentioning

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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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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A study on mechanical and pressure-sensitive properties of cement mortar with nanophase materials

Cited by 435 publications

References 4 publications

The effects of ZrO2 nanoparticles on physical and mechanical properties of high strength self compacting concrete

The effects of ZrO2 nanoparticles on physical and mechanical properties of high strength self compacting concrete

Preparation and mechanical performance of Cf-SiCf-(Al₂O₃p) reinforced geopolymer composites

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

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A study on mechanical and pressure-sensitive properties of cement mortar with nanophase materials

Cited by 435 publications

References 4 publications

The effects of ZrO2 nanoparticles on physical and mechanical properties of high strength self compacting concrete

The effects of ZrO2 nanoparticles on physical and mechanical properties of high strength self compacting concrete

Preparation and mechanical performance of Cf-SiCf-(Al2O3p) reinforced geopolymer composites

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

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Product

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Preparation and mechanical performance of Cf-SiCf-(Al₂O₃p) reinforced geopolymer composites