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factors affecting the performance of fly ash

Some Factors Affecting Fly-ash Collector Performance On

2018-5-30  Some Factors Affecting Fly-ash Collector Performance On Large Pulverized Fuel-fired Boilers* C. R. FLODIN AND H. H. HAALAND Western Precipitation Corporation Los Angeles, California For many years, the collection of fly ash from pul-verized-fuel-fired boilers was a relatively simple problem from the collector manufacturers' point of view

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Factors affecting the suitability of fly ash as source

2010-5-1  Table 2 presents a summary of the factors, inherent to the fly ash, that affect the mechanical strength of the resultant geopolymer. Values 1–5 were assigned to the fly ashes for each factor, 1 indicates the highest rank with respect to the value of a particular factor (e.g. CaO content) compared with those of the fly ashes and 5 the lowest.

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Factors Affecting the Bond Strength Between the Fly Ash

2018-6-1  Consequently, using fly ash from different sources in producing FBGC has different performance in structural members. Thus, understanding the factors that affect the performance of the FBGC with steel reinforcement is necessary to promote the use of

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Studies on factors influencing fly ash resistivity from

2016-7-20  Electrostatic precipitator (ESP) performance is a function of electrical resistivity of particles in flue gas. This study presents basic factors that influence fly ash resistivity and ultimately ESP performance. Factors that influence electrical resistivity are coal, sulfur, flue gas moisture, flue gas temperature, and ash chemistry etc.

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Exploring the major factors affecting fly-ash concrete

2017-6-19  Das BB, Pandey SP (2011) Influence of fineness of fly ash on the carbonation and electrical conductivity of concrete. J Mater Civ Eng 23(9):1365–1368. Article Google Scholar 39. Zhang P, Li Q (2013) Effect of fly ash on durability of high performance concrete composites. Res J Appl Sci Eng Technol 6(1):7–12

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Factors Affecting the Setting Time of Fly Ash-Based

Fly ash is a waste from coal burning, that are generated with fluctuation both in its physical and chemical characteristics. This characteristics of fly ash when used in the making of geopolymer concrete will greatly affect the final products obtained. The pH value measured in fly ash, according previous research, can influence the setting time of geopolymer and fly ash with high pH values can

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Factors affecting the shrinkage of fly ash geopolymers

2009-10-28  The shrinkage of fly ash geopolymers was studied in the present study. Fly ash was used as the source material for making the geopolymers. The effects of the concentration of NaOH, sodium silicate-to-NaOH ratio, liquid-to-ash ratio, curing temperature, and curing time on shrinkage were investigated. The geopolymers were cured at 25, 40, and 60℃, respectively.

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Factors affecting the shrinkage of fly ash geopolymers

2011-3-8  The shrinkage of fly ash geopolymers was studied in the present study. Fly ash was used as the source material for making the geopolymers. The effects of the concentration of NaOH, sodium silicate-to-NaOH ratio, liquid-to-ash ratio, curing temperature, and curing time on shrinkage were investigated. The geopolymers were cured at 25, 40, and 60°C, respectively. The results indicate that

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"Factors Affecting the Bond Strength Between the Fly Ash

In this study, the effect of fly ash characteristics, the content of the fly ash and mix proportion of the Fly Ash-Based Geopolymer Concrete (FBGC) on the bond strength between the FBGC and steel reinforcement were examined. Australian fly ashes from five different sources (Eraring, Mt-Piper, Bayswater, Gladstone and Collie) were used in producing FBGC.

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(PDF) Factors Affecting the Setting Time of Fly Ash-Based

2016-1-25  Antoni et al. [37] focused on the factors affecting the setting time of fly ash geopolymers. They found that the source of fly ash has a significant effect on the

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(PDF) Factors affecting the shrinkage of fly ash

Ridtirud et al., Factors affecting the shrinkage of fly ash geopolymers 103 ratio of 0.33 shows a high shrinkage of 3000 10 6 mm/mm 3.4. Effects of liquid-to-ash ratio at the age of 60 d. The high shrinkage is due primarily to the The strength and shrinkage of geopolymer mortars with low strength of this mortar.

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Factors Affecting the Reactivity of Fly Ash from Western

This study of 16 fly ashes from various Colorado and Wyoming coals will show the relationship of coal and fly ash analyses to pozzolanic activity with portland cement. Samples have been followed from the coal source through the power plant combustion and collection system to show the effects upon fly ash quality for use as a mineral admixture

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FACTORS AFFECTING THE REACTIVITY OF FLY ASH FROM

FACTORS AFFECTING THE REACTIVITY OF FLY ASH FROM WESTERN COALS. This study of 16 fly ashes from various Colorado and Wyoming coals will show the relationship of coal and fly ash analyses to pozzolanic activity with porland cement. Samples have been followed from the coal source through the power plant combustion and collection system to show

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"Factors Affecting the Bond Strength Between the Fly Ash

In this study, the effect of fly ash characteristics, the content of the fly ash and mix proportion of the Fly Ash-Based Geopolymer Concrete (FBGC) on the bond strength between the FBGC and steel reinforcement were examined. Australian fly ashes from five different sources (Eraring, Mt-Piper, Bayswater, Gladstone and Collie) were used in producing FBGC.

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Factors affecting the shrinkage of fly ash geopolymers

The shrinkage of fly ash geopolymers was studied in the present study. Fly ash was used as the source material for making the geopolymers. The effects of the concentration of NaOH, sodium silicate-to-NaOH ratio, liquid-to-ash ratio, curing temperature, and curing time on shrinkage were investigated. The geopolymers were cured at 25, 40, and 60°C, respectively.

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“FACTORS AFFECTING THE FIRE RESISTANCE

2016-5-22  Class F fly ash, which is also referred to as being the low calcium fly ash, is produced by burning the anthracite of bituminous coals, while class C fly ash,the higher in calcium fly ash, is produced normally by burning lignite or sub bituminous coal. A second classification for fly ash

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Factors Affecting the Bond Strength Between the Fly Ash

A total of 45 FBGC mixes with different fly ash content (300, 400 and 500 kg/m3) and different proportions of alkaline activator were prepared. The use of different fly ashes and in different amounts showed significant differences in the bond strength between the FBGC and steel reinforcement.

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Factors Affecting the Compressive Strength of Class C Fly

The compressive strength of geopolymer prepared from a class C fly ash (CFA) at different curing conditions and mass ratio of water to fly ash were investigated. The geopolymer was activated with a mixed solution of sodium hydroxide (NaOH) and sodium silicate. The results revealed that the obtained compressive strength was in the range of 11.7~61.9MPa and the compressive strength decreased

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Chapter 3 Fly Ash in Portland Cement Concrete Fly Ash

2017-6-27  Figure 3-1: Fly ash improves workability for pavement concrete. Decreased water demand. The replacement of cement by fly ash reduces the water demand for a given slump. When fly ash is used at about 20 percent of the total cementitious, water demand is reduced by approximately 10 percent. Higher fly ash contents will yield higher water reductions.

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Factors influencing the mechanical properties of

2017-6-7  mechanical performance. The water-cement ratios were set to 0.3, 0.33 and 0.36 for each type of LWA. Fly ash contents of 18%, 20% and 22% by cement volume were used for each level of water-cement ratio. The effects of LWA types, fly ash content and water-cement ratio on the properties of LWAC were evaluated, and the crack pattern and failure

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"Factors Affecting the Bond Strength Between the Fly Ash

In this study, the effect of fly ash characteristics, the content of the fly ash and mix proportion of the Fly Ash-Based Geopolymer Concrete (FBGC) on the bond strength between the FBGC and steel reinforcement were examined. Australian fly ashes from five different sources (Eraring, Mt-Piper, Bayswater, Gladstone and Collie) were used in producing FBGC.

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FACTORS AFFECTING THE REACTIVITY OF FLY ASH FROM

FACTORS AFFECTING THE REACTIVITY OF FLY ASH FROM WESTERN COALS. This study of 16 fly ashes from various Colorado and Wyoming coals will show the relationship of coal and fly ash analyses to pozzolanic activity with porland cement. Samples have been followed from the coal source through the power plant combustion and collection system to show

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Factors Affecting the Bond Strength Between the Fly Ash

A total of 45 FBGC mixes with different fly ash content (300, 400 and 500 kg/m 3) and different proportions of alkaline activator were prepared. The use of different fly ashes and in different amounts showed significant differences in the bond strength between the FBGC and steel reinforcement.

get price

Factors Affecting the Bond Strength Between the Fly Ash

A total of 45 FBGC mixes with different fly ash content (300, 400 and 500 kg/m3) and different proportions of alkaline activator were prepared. The use of different fly ashes and in different amounts showed significant differences in the bond strength between the FBGC and steel reinforcement.

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Factors Affecting the Compressive Strength of Class C Fly

The compressive strength of geopolymer prepared from a class C fly ash (CFA) at different curing conditions and mass ratio of water to fly ash were investigated. The geopolymer was activated with a mixed solution of sodium hydroxide (NaOH) and sodium silicate. The results revealed that the obtained compressive strength was in the range of 11.7~61.9MPa and the compressive strength decreased

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Physical factors affecting the mutagenicity of fly ash

1979-5-25  Physical factors affecting the mutagenicity of fly ash from a coal-fired power plant. Fisher GL, Chrisp CE, Raabe OG. The two finest, most respirable coal fly ash fractions collected from the smokestack of a power plant were more mutagenic than two coarser fractions.

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Chapter 3 Fly Ash in Portland Cement Concrete Fly Ash

2017-6-27  Figure 3-1: Fly ash improves workability for pavement concrete. Decreased water demand. The replacement of cement by fly ash reduces the water demand for a given slump. When fly ash is used at about 20 percent of the total cementitious, water demand is reduced by approximately 10 percent. Higher fly ash contents will yield higher water reductions.

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Physical Factors Affecting the Mutagenicity of Fly Ash

The two finest, most respirable coal fly ash fractions collected from the smokestack of a power plant were more mutagenic than two coarser fractions. Mutagenicity was evaluated in the histidine-requiring bacterial strains TA 1538, TA 98, and TA 100 of Salmonella typhimurium. Ash samples collected from the hoppers of an electrostatic precipitator in the plant were not mutagenic.

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Factors influencing the mechanical properties of

2017-6-7  mechanical performance. The water-cement ratios were set to 0.3, 0.33 and 0.36 for each type of LWA. Fly ash contents of 18%, 20% and 22% by cement volume were used for each level of water-cement ratio. The effects of LWA types, fly ash content and water-cement ratio on the properties of LWAC were evaluated, and the crack pattern and failure

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wet fgd chemistry and performance factors

2 3 2 1 Wet FGD process and influencing factors 2 4 1 2 Chemical properties of fly ash 3 3 2 6 Performance of the produced coagulant complex . Optimization of Factors Affecting Scrubber Performance. Comparative gas cleaning performance of a pilot scale venturi scrubber with Performance of wet dust scrubbers Chem Eng Prog 110 Mar 1955 8 .

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