frontiers effect of nano alumina on compressive strength
The Effect of Nano Ceramic Powders On Mechanical and
Compressive strength and splitting tensile strength of concrete mix with nano alumina increased highly with increasing content of Al 2 O 3 and reach its optimum value at 1.1 of Al 2 O 3 in NA6. Alumina powder has a high ability to diminish pores size and to increase density of concrete mixture so low permeability low water absorption
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Effect of Nano-Silica and GGBS on the Strength Properties
In this study the roles of reactive alumina and process variables such as sodium content and molarity on the alkaline activation of nano-silica and ground-granulated blast-furnace slag are explored. Reactive alumina content of fly ash is the key parameter that determines the maximum compressive strength achieved from the alkaline activation.
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Investigation on the effect of addition of nano alumina
Nazari et al. 17 investigated the effect of addition of nano alumina with average diameter of 15 nm on concrete as partial replacement of cement. They conducted compressive strength test on cubic specimens with the dimension of 10 cm with 0.5 1 1.5 2 contents of nano alumina. The results indicated that the
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EFFECT OF NATURAL ADDITIVE ON MICRO PROPERTIES OF
Based on experiment the compressive strength of concrete cubes was all increased by incorporating nano alumina into matrix when the fraction of nano alumina was 1 of the cement by weight the
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Effect of Nanoparticles on Strength and Durability
The nanotechnology provides an impact on construction industry materials with new properties and produce material with better performance. This paper presents the experimental investigation on the effects of nano particles incorporated in the cementitious materials to study the strength and durability properties of cement mortar. Nano particles such as nano alumina (NA) nano ferric oxide (NF
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PAPER OPEN ACCESS Related content Characteristics of
In this work an attempt has been made to study the effect of nano alumina on the properties of concrete composite. In order to investigate the effect of nano-alumina on the mechanical strength of cement composite the specimens with different volume percentages (0 0.5 0.75 and 1 ) nano-alumina in each proportion three sample were cast totally
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(PDF) Hybrid Effect of Nano-Alumina and Nano-Titanium
This paper presents the effect of nano alumina (NA) on compressive strength and microstructure of cement paste containing high volume blast furnace slag (HVBFS) contents of 70 80 and 90 as
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PAPER OPEN ACCESS The Effect of Nano Ceramic Powders
mm when 1.1 nano-zirconia added the same behavior observed in mix that contain nano alumina powder. The compressive strength increases when nano-zironia added themaximum value of compressive strength obtained when 0.7 nano-zirconia added (45.3MPa at 28 days 48.3 MPa at 60 days and 52.3 MPa at 90 days). Moreover splitting tensile strength was
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Polypropylene fiber reinforced cement mortars containing
May 15 2016 · A slight increase in compressive strength of mortar was observed by using up to 10 wt of RHA as a replacement of cement. However addition of nano-alumina helped the compressive strength of mortar remain approximately equal to that of the control specimen even when 20 or 30 wt RHA was used. Addition of polypropylene fibers resulted in
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Study of Effect of Nanomaterials as Cement Replacement on
strength (7 days) and the nano particle can be used as an agent for activating hydraulic properties of belite cement thereby changes in microstructure causes improved mechanical property. The nano Alumina fill the ITZ of cement- sand and some capillary in the matrix and hence the elastic modulus and compressive strength of mortars were increased.
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Frontiers Effect of Magnesium as Substitute Material in
The optimization of enzyme-mediated calcite precipitation was evaluated as a soil-improvement technique. In our previous works purified urease was utilized to bio-catalyze the hydrolysis of urea which causes the supplied Ca2 to precipitate with CO32− as calcium carbonate. In the present work magnesium chloride was newly added to the injecting solutions to delay the reaction rate and to
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Polypropylene fiber reinforced cement mortars containing
May 15 2016 · A slight increase in compressive strength of mortar was observed by using up to 10 wt of RHA as a replacement of cement. However addition of nano-alumina helped the compressive strength of mortar remain approximately equal to that of the control specimen even when 20 or 30 wt RHA was used. Addition of polypropylene fibers resulted in
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Frontiers Compressive Response of Non-slender Octet
Therefore the compressive strength for an octet-truss material can be expressed as Deshpande et al. (2001) σ = min √2π3n2E 2 (r l)4 2√2π(r l)2σf . (7) The extension of the expression (7) to non-slender cubic frame lattices was obtained through the analysis of an octet unit cell constrained to deform laterally.
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In addition it was revealed that the amount of hardness compressive strength and porosity increased as weight percentage of nano Al2O3 particles increased. View Show abstract
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Effect of nano-ZnO on mechanical and thermal properties
compressive strength and flexion strength of geopoly-mers mixed with 2 nano-alumina 9 . Khater et al. studied the structural and mechanical properties of geopolymers having various carbon nano-tube (CNT) content 10 and Duan et al. studied the effect of TiO 2 nanoparticles on the carbonation shrinkage compres-sive strength and
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Characteristics of Cement Concrete with Nano Alumina
Aug 09 2017 · In order to investigate the effect of nano-alumina on the mechanical strength of cement composite the specimens with different volume percentages (0 0.5 0.75 and 1 ) nano-alumina in each proportion three sample were cast totally making 58
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Compressive failure analysis of alumina nano particles
of the effect of alumina nano dispersion in the fiber/epoxy composite on the compressive strength to the bulk material. Furthermore the compressive strength of hybrid composite prepared by adding a constant 2wt. of alumina particles to the fiber-reinforced composites was
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Investigation on the effect of addition of nano alumina
Nazari et al. 17 investigated the effect of addition of nano alumina with average diameter of 15 nm on concrete as partial replacement of cement. They conducted compressive strength test on cubic specimens with the dimension of 10 cm with 0.5 1 1.5 2 contents of nano alumina. The results indicated that the
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(PDF) An Investigation on the Effects of Al2O3 Nano
Li et al. 9 observed that nano-alumina significantly increases the modulus of elasticity (up to 143 at a dosage of 5 ) but it has a limited influence on the compressive strength. Nazari et al. 10 investigated the compressive strength and workability of concrete by partial replacement of cement with nano
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EFFECT OF NATURAL ADDITIVE ON MICRO PROPERTIES OF
Based on experiment the compressive strength of concrete cubes was all increased by incorporating nano alumina into matrix when the fraction of nano alumina was 1 of the cement by weight the
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EXPERIMENTAL STUDY ON STRENGTH PROPERTIES OF
house effect. Nano technology is one of the most promising areas of science. The use of nano materials in concrete is new revolution. Nano materials like nano silica nano titanium oxide carbon nano tubes nano alumina etc which are presently used in concrete to modify its strength properties. In the present study strength properties such
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(PDF) Hybrid Effect of Nano-Alumina and Nano-Titanium
This paper presents the effect of nano alumina (NA) on compressive strength and microstructure of cement paste containing high volume blast furnace slag (HVBFS) contents of 70 80 and 90 as
Chat OnlinePAPER OPEN ACCESS Related content Characteristics of
In this work an attempt has been made to study the effect of nano alumina on the properties of concrete composite. In order to investigate the effect of nano-alumina on the mechanical strength of cement composite the specimens with different volume percentages (0 0.5 0.75 and 1 ) nano-alumina in each proportion three sample were cast totally
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Effects of CuO nanoparticles on compressive strength of
Jul 14 2011 · In the present study the compressive strength thermal properties and microstructure of self-compacting concrete with different amounts of CuO nanoparticles have been investigated. CuO nanoparticles with an average particle size of 15 nm were added to self-compacting concrete and various properties of the specimens were measured. The results indicate that CuO nanoparticles are
Chat OnlineThe Effect of Nano Ceramic Powders On Mechanical and
Compressive strength and splitting tensile strength of concrete mix with nano alumina increased highly with increasing content of Al 2 O 3 and reach its optimum value at 1.1 of Al 2 O 3 in NA6. Alumina powder has a high ability to diminish pores size and to increase density of concrete mixture so low permeability low water absorption
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Effect of nano alumina on compressive strength and
Apr 01 2019 · This paper presents the effect of nano alumina (NA) on compressive strength and microstructure of cement paste containing high volume blast furnace slag (BFS) contents of 70 80 and 90 as partial replacement of cement and combined BFS and class F fly ash (FA) contents of 70 and 80 as partial replacement of cement. FA is used at 30 as partial replacement of BFS.
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Frontiers Compressive Response of Non-slender Octet
Therefore the compressive strength for an octet-truss material can be expressed as Deshpande et al. (2001) σ = min √2π3n2E 2 (r l)4 2√2π(r l)2σf . (7) The extension of the expression (7) to non-slender cubic frame lattices was obtained through the analysis of an octet unit cell constrained to deform laterally.
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Effect of Accelerated Weathering on the Compressive
compressive strength under the effect of accelerated weathering (moisture and UV radiation) increased with the addition of nano powders (fly ash fly dust zirconia and aluminum). As well as the results showed that the maximum values of compressive strength reach to (286.25MPa) for (PMMA 2 nZrO2) nano composite.
Chat Online(PDF) An Investigation on the Effects of Al2O3 Nano
Li et al. 9 observed that nano-alumina significantly increases the modulus of elasticity (up to 143 at a dosage of 5 ) but it has a limited influence on the compressive strength. Nazari et al. 10 investigated the compressive strength and workability of concrete by partial replacement of cement with nano
Chat OnlineSynthesis of nano-alumina and their effect on structure
Sample composites were produced by mixing metakaolin an alkaline solution and nano-alumina (1 2 and 3 ) with a constant L/S ratio 0.55. The resulting products were investigated by XRD XRF FTIR SEM MIP TG/DTA and a compressive strength test. The results showed that the insertion of nano-alumina powder improves geopolymer strength.
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