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Surface Modification of Fly Ash Concrete Through

Mar 05, 2018  Request PDF Surface Modification of Fly Ash Concrete Through Nanophase Incorporation for Enhanced Chemical Deterioration Resistance The global warming gas, CO2, is liberated when clay and ...

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Surface Modification of Fly Ash Concrete Through Nanophase ...

This work endeavours to study the effect of surface-modified fly ash concrete through the addition of nanoparticles against sulphate attack and calcium leaching. Nanophase modification was performed by integrating nano-TiO2 and CaCO3 for enhanced durability and corrosion resistance. Four types of concrete mix, namely fly ash concrete (FA), FA ...

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Enhanced seawater corrosion resistance of reinforcement

Oct 10, 2019  Corrosion resistance of reinforcement by nanophase modification of fly ash concrete. • Nano-CaCO 3 particles prevented leakage of chloride ions to the rebar. • Nano-CaCO 3 modified fly ash exhibited the most noble OCP, LPR and corrosion rate. • Particle size analysis confirmed lesser agglomeration of nano-CaCO 3. •

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Surface modification of fly ash by mechano-chemical

Sep 01, 2018  chemical (MC) treatment for surface modification of FA powder w as systemically investigated by analyzing the size, surface morphology, crystal structure and dissolubility of Si and Al ions in...

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Nanoparticles for enhancing mechanical properties of fly

Jan 01, 2016  The total powder content (cement + flyash + nanoparticles) for all mixes was 375 kg/m3.Water to powder ratio was 0.44, fly ash content was 150 kg/m3, river sand 549 kg/m3, crushed sand 235 kg/ m3, aggregate 1130 kg/ m3 and chemical admixture was 4.5 kg/ m3. The proportions of the mixtures are presented in Table 1.

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Influence of nanomaterial on high-volume fly ash

Jul 23, 2020  高达10%返现  The high-volume fly ash replacement (up to 70%) in concrete showed less strength at initial period, i.e., 3 and 7 days, whereas the introduction of nanosilica in high-volume fly ash improved the compressive strength by 0.79–21% and 3.4–26% at initial curing age of 3 and 7 days, respectively.

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Optimization of fly ash concrete mix - ScienceDirect

Jan 01, 2020  This paper presents a method for optimizing fly ash concrete mix using the data obtained through planned experimental program. The full factorial experimental technique involving three factors with their four levels (4x4x4) were used. A total of 64 mixes with three replicates (192 specimens) were cast by taking three parameters for optimization.

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Effect of partial replacement of cement with nano fly ash

Jan 01, 2021  The best replacement level of cement with nano fly ash is found to be 40%. For the mix 1:4, the 28th day compression strength of the permeable concrete specimens without NFA particles is found as 15.24 N/mm 2, 16.10 N/mm 2 and 15.48 N/mm 2 for the water - binder ratios 0.32, 0.33 and 0.34 respectively.

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Surface Modification of Fly Ash Concrete Through Nanophase ...

This work endeavours to study the effect of surface-modified fly ash concrete through the addition of nanoparticles against sulphate attack and calcium leaching. Nanophase modification was performed by integrating nano-TiO2 and CaCO3 for enhanced durability and corrosion resistance. Four types of concrete mix, namely fly ash concrete (FA), FA ...

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Surface-modification of fly ash and its effect on ... - ScienceDirect

Feb 28, 2019  For the specimen added with original fly ash, the weight loss percentage increased from 0.69% to 1.42% and from 2.17% to 24.60% after 25, 50 freezing-thaw cycles respectively with the increase of fly ash content, implying that under the circumstance of same freezing-thaw cycles, the weight loss due to surface exfoliation occurred more severe in ...

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Surface modification of fly ash by mechano-chemical treatment

Jan 01, 2019  1. Introduction. Fly ash (FA), as an industrial byproduct from thermal power plant, is worldwide produced on a large scale. The excess landfilled of FA in ash disposal sites may cause serious space problems, potential risks of air and water pollution due to leaching , , , , , .Consequently, the efficient usage of FA has attracted much attention with respect to the

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Surface Modification of MSWI Fly Ash and its Application in ...

Aug 01, 2018  Surface Modification of MSWI Fly Ash and its Application in Polypropylene Composites August 2018 Gao Xiao Hua Xue Gong Cheng Xue Bao/Journal of Chemical Engineering of Chinese Universities 32(4 ...

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Investigation on the Mechanical Properties and Microscopic ...

Jul 11, 2022  In this study, cement-fly ash composite slurry was used to modify the surface of steel slag aggregate. The evolution law of parameters such as the mass loss rate, dynamic elastic modulus, and compressive strength of the modified material was obtained through the erosion test, and the sulfate erosion was investigated by X-ray diffraction and scanning electron

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Strength, permeability, and porosity results for fly ash modified ...

Download scientific diagram Strength, permeability, and porosity results for fly ash modified pervious concrete. from publication: Strength Time–Varying and Freeze–Thaw Durability of ...

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Fly Ash in Concrete Advantages Disadvantages of Fly Ash concrete ...

Fly Ash in Concrete. Fly ash in concrete provides good use of portal cement hydration products. Calcium as well as alkali hydroxide solutions, that are emitted into the porous system of the paste, mix with fly ash particles, creating a cement medium, and the heat generated by hydration of portal cement is a significant factor in the initiation of a fly ash reaction.

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FLY ASH CONCRETE

The benefits of fly ash in concrete: Workability, concrete is easier to place with less effort. Ease of pumping, pumping requires less energy and longer pumping distances are possible. Improved finishing, concrete is creamier with clear sharp architectural patterns easier to achieve. Reduced bleeding, fewer bleed channels decrease permeability ...

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Enhanced biodeterioration resistance of nanophase modified fly ash ...

Enhanced biodeterioration resistance of nanophase modified fly ash concrete specimens: Accelerated studies in acid producing microbial cultures. Environmental Progress Sustainable Energy, 2018. Sudha Uthaman. Download Download PDF.

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Investigation on surface sulfate attack of nanoparticle-modified fly ...

DOI: 10.1007/s11356-020-10134-2 Corpus ID: 220612297; Investigation on surface sulfate attack of nanoparticle-modified fly ash concrete @article{Vishwakarma2020InvestigationOS, title={Investigation on surface sulfate attack of nanoparticle-modified fly ash concrete}, author={Vinita Vishwakarma and Sudha Uthaman and Ramachandran Dasnamoorthy and

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Materials Free Full-Text Fly Ash from Lignite Combustion as a ...

Jul 13, 2022  The potential use of fly ash (FA) originating from lignite combustion at the Belchatow Power Plant (Poland) as filler for rubber mixes was evaluated. Samples of fly ash collected from heaps created in different years were compared according to their chemical and phase composition, particle size distribution, and morphology. The sieve fractionation of fly

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Enhanced anti‐microbial activity in green concrete specimens

This study reports the anti‐bacterial properties of green concrete containing fly ash, nanoparticle modifiers, and a corrosion inhibitor. Four different concrete specimens, namely control concrete containing ordinary portland cement (CC), fly ash concrete containing 40 wt % fly ash (CF), modified fly ash concrete containing nano‐TiO2 and nano‐CaCO3 (1 wt % each) called CFN,

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EFFECTS OF FLY ASH ON CONCRETE PROPERTIES - CivilBlog.Org

Jan 31, 2016  7. On Resistance to Chemical Attack. Fly ash slightly improves the resistance of concrete to sulphate attack. 8. On Heat of Hydration. Fly ash reduces the heat of hydration in concrete. A substitution of 30 per cent fly ash may result in

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Surface Modification of Fly Ash Concrete Through Nanophase ...

Surface Modification of Fly Ash Concrete Through Nanophase Incorporation for Enhanced Chemical Deterioration Resistance Journal of Bio- and Tribo-Corrosion, 2018 Sudha Uthaman

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Surface-modification of fly ash and its effect on ... - ScienceDirect

Feb 28, 2019  For the specimen added with original fly ash, the weight loss percentage increased from 0.69% to 1.42% and from 2.17% to 24.60% after 25, 50 freezing-thaw cycles respectively with the increase of fly ash content, implying that under the circumstance of same freezing-thaw cycles, the weight loss due to surface exfoliation occurred more severe in ...

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Document is current - crossmark.crossref

Document is current Any future updates will be listed below. Surface Modification of Fly Ash Concrete Through Nanophase Incorporation for Enhanced Chemical Deterioration Resistance

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Enhanced biodeterioration resistance of nanophase modified fly ash ...

Enhanced biodeterioration resistance of nanophase modified fly ash concrete specimens: Accelerated studies in acid producing microbial cultures. Environmental Progress Sustainable Energy, 2018. Sudha Uthaman. Download Download PDF.

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Surface modification of fly ash by mechano-chemical treatment

Jan 01, 2019  1. Introduction. Fly ash (FA), as an industrial byproduct from thermal power plant, is worldwide produced on a large scale. The excess landfilled of FA in ash disposal sites may cause serious space problems, potential risks of air and water pollution due to leaching , , , , , .Consequently, the efficient usage of FA has attracted much attention with respect to the

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Surface modification of fly ash – characterisation and evaluation

Fly ash particles were modified by acid and base treatment and characterised by electron microscopy and surface area determination. Little bound rubber formed on any of the modified fly ash particles, the green strength of compounds with 30 phr filler was poor, and limited reinforcement was obtained only with the acid–base modified material.

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Investigation on surface sulfate attack of nanoparticle-modified fly ...

DOI: 10.1007/s11356-020-10134-2 Corpus ID: 220612297; Investigation on surface sulfate attack of nanoparticle-modified fly ash concrete @article{Vishwakarma2020InvestigationOS, title={Investigation on surface sulfate attack of nanoparticle-modified fly ash concrete}, author={Vinita Vishwakarma and Sudha Uthaman and Ramachandran Dasnamoorthy and

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Strength, permeability, and porosity results for fly ash modified ...

Download scientific diagram Strength, permeability, and porosity results for fly ash modified pervious concrete. from publication: Strength Time–Varying and Freeze–Thaw Durability of ...

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Uses, Benefits, and Drawbacks of Fly Ash in Construction

Feb 24, 2022  Produces dense concrete with a smooth surface and sharp detail. Great workability. Reduces crack problems, permeability, and bleeding. Reduces heat of hydration. Allows for a lower water-cement ratio for similar slumps when compared to no-fly-ash mixes. Reduces CO2 emissions.

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Effect of CFBC fly ash on concrete properties

Download scientific diagram Effect of CFBC fly ash on concrete properties from publication: Fluidized Bed Combustion (FBC) Fly Ash and Its Performance in Concrete Concerns over the ...

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Investigation on the Mechanical Properties and Microscopic ...

Jul 11, 2022  In this study, cement-fly ash composite slurry was used to modify the surface of steel slag aggregate. The evolution law of parameters such as the mass loss rate, dynamic elastic modulus, and compressive strength of the modified material was obtained through the erosion test, and the sulfate erosion was investigated by X-ray diffraction and scanning electron

Inquire now

EFFECTS OF FLY ASH ON CONCRETE PROPERTIES - CivilBlog.Org

Jan 31, 2016  7. On Resistance to Chemical Attack. Fly ash slightly improves the resistance of concrete to sulphate attack. 8. On Heat of Hydration. Fly ash reduces the heat of hydration in concrete. A substitution of 30 per cent fly ash may result in

Inquire now

Increasing Use of Fly Ash in Concrete - College of

- To develop a new generation high volume fly ash concrete by incorporation of nano-materials. - To understand the relationships between various ingredients of concrete through characterization at multiple scales. Purpose of Investigation More than 120 mn tonne of fly ash and other coal combustion products (CCPs) are produced in the US each year.

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Materials Free Full-Text Fly Ash from Lignite Combustion as a ...

Jul 13, 2022  The potential use of fly ash (FA) originating from lignite combustion at the Belchatow Power Plant (Poland) as filler for rubber mixes was evaluated. Samples of fly ash collected from heaps created in different years were compared according to their chemical and phase composition, particle size distribution, and morphology. The sieve fractionation of fly

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