Factors affecting the suitability of fly ash as source material …
The results of chemical analyses, X-ray diffraction (XRD) and particle size distribution (PSD) of five sources of fly ash obtained from coal-fired power generating plants in …
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The Influence of Fly Ash and Slag on the Mechanical …
GPC exhibits excellent performance with high strength [44,45,46,47], heat and ... Fly ash is a byproduct of the combustion of coal, normally in the form of ... Butt, F.; Zhu, X.; Jiang, T.; Tufail, R.F. A Comprehensive Study on the Factors Affecting the Workability and Mechanical Properties of Ambient Cured Fly Ash and Slag Based Geopolymer ...
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SOME FACTORS AFFECTING THE DURABILITY OF LIME …
gate some of the factors that affect the durability of lime-fly ash-aggregate mixtures. More specifically, the effects of six major factors on durability were studied: 1. Aggregate gradation, 2. Lime plus fly ash content, 3. Ratio of lime plus fly ash to total fines, 4. Increased curing time, 5. Fly ash content, and 6. Saturation.
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Factors affecting the fire resistance properties of fly ash …
The American University in Cairo The School of Sciences and Engineering Construction Engineering Department "FACTORS AFFECTING THE FIRE RESISTANCE PROPERTIES OF FLY ASH CONCRETE" BY Hisham Tarek Mohamed Hafez B.Sc. in construction engineering, AUC A thesis submitted in a partial fulfilment of the requirements for the degree of Masters of …
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A Critical Review of Fly Ash Geopolymer Concrete
This critical review investigates the usage of fly ash based geopolymer concrete as a substitute for conventional Portland cement concrete in terms of studying the factors that affect the fresh ...
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A review on the effect of fly ash characteristics and their …
This paper attempts to identify the effect of source material variation of geopolymer concrete, particularly which use fly ash as source material and focuses on the variation of its characteristics and the effects to properties of concrete.
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Synthesis factors affecting mechanical properties, …
Important parameters which affect the properties and performance of fly ash based geopolymers with addition of a variety of wastes are discussed based on a comprehensive literature review. ... The factors affecting the performances of fly ash-based geopolymer concrete, in particular aggregate, are discussed. For future studies on fly ash-based ...
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Evaluation of the Physical and Chemical Properties of Fly …
Owens3 reported that the major factor influencing the effects of fly ash on the workability of concrete is the proportion of coarse material (>45μm) in the ash. A comprehensive study by …
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Factors affecting the performance of microbial-induced …
The other is chemical technology, such as adding cement, lime, fly ash or organic adhesive materials to chemically stabilize soil so as to improve soil hydro-mechanical behavior ... This paper reviews various physical, chemical, biological, and environmental factors that affect the performance of ureolysis-based MICP-treated geomaterials ...
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Prediction models for creep and creep recovery of fly ash …
The performance parameters of fly ash are shown in Table 3. ... The existing concrete creep models cannot accurately predict the creep of fly ash concrete. The main factors affecting the creep of concrete include the elastic modulus, load duration, and the type of cement, etc. After adding fly ash, it is necessary to modify the concrete creep ...
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Influence of Different Parameters on the Performance of …
In order to study the influence law of each parameter on the performance of the alkali-activated composite gelling system, the influence degree was sorted, and the most important parameter affecting each performance was found. The solution of liquid water glass and solid sodium hydroxide was used as the alkaline activator, and the mixing ratio was designed …
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A review: Reaction mechanism and strength of slag and fly ash …
The physical and chemical requirements of slag and fly ash for the stable performance of AAM are summarized. ... BFS/FA-AAM are studied. • The factors affecting the strength of BFS-AAM, FA-AAM, BFS/FA-AAM are explored and influencing mechanisms are discussed. ... Four factors have proved to be the control factors of reaction and strength of ...
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Factors Affecting the Compressive Strength of Geopolymers…
For this reason, this study compiled information on the different variables that affect the compressive strength of geopolymers, such as Si/Al ratio, curing temperature and time, type and ...
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Some Factors Affecting Fly-ash Collector Performance …
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 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 ...
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Influence of Different Parameters on the Performance of …
According to the recent research results, the factors affecting the performance of alkali-activated slag–fly ash composite cementation systems are mainly concentrated in four …
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(PDF) Studies on factors influencing fly ash resistivity from
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 ...
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Fly ash-based geopolymer: clean production, properties and applications
Fly ash-based geopolymer is expected to be used as a kind of novel green cement. Fly ash-based geopolymer can be used as a class of materials to adsorb and immobilize toxic or radioactive metals. The factors affecting the performances of fly ash-based geopolymer concrete, in particular aggregate, are discussed.
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Effect of Curing Time on the Performance of Fly Ash …
DOI: 10.1061/(asce)mt.1943-5533.0003581 Corpus ID: 233830732; Effect of Curing Time on the Performance of Fly Ash Geopolymer-Stabilized RAP Bases @article{Jallu2021EffectOC, title={Effect of Curing Time on the Performance of Fly Ash Geopolymer-Stabilized RAP Bases}, author={Maheshbabu Jallu and Sireesh Saride and Arul Arulrajah and Subrahmanyam …
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A Comprehensive Study on the Factors Affecting the …
A Comprehensive Study on the Factors Affecting the Workability and Mechanical Properties of Ambient Cured Fly Ash and Slag Based Geopolymer Concrete ... However, FAGPC specimens ( fly ash) demonstrated lower mechanical performance as compared to OPC specimens due to low reactivity of fly ash particles, low amount of calcium and more porous ...
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Factors Affecting the Properties of Na2CO3-activated Fly Ash…
Alkali activated Fly Ash/Slag (AAFS), a newly evolved type of alkali-activated materials (AAMs), was studied for the sake of developing a more sustainable alternative to Portland cement (PC) which ...
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(PDF) Exploring the major factors affecting fly-ash concrete
Exploring the major factors affecting fly-ash concrete carbonation using artificial neural network ... and tested with 300 datasets from experiments as well as past research. The performance of ...
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Geo-polymerization mechanism and factors affecting it …
Geo-polymerization mechanism and factors affecting it in Metakaolin-slag-fly ash blended concrete A D Sandeep Kumar1, Dinesh Singh2, V Srinivasa Reddy3, Kaveli Jagannath Reddy4 1Research Scholar of Civil Engineering, K L University, Andhra Pradesh, India. 2Department of Civil Engineering, K L University, Andhra Pradesh, India 3Professor, Department of Civil …
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Factors affecting the drying shrinkage of alkali-activated …
Drying shrinkage was the main focus of this study, with the effect of various curing conditions and slag/fly ash proportions investi-gated. Additional characteristics were also investigated …
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Exploring the major factors affecting fly-ash concrete …
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 Google Scholar Cross Ref; 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 Google Scholar Cross Ref
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Effect of Na2CO3 on the tensile creep of slag-fly ash …
Currently, researchers have extensively studied the tensile creep of OPC. Previous studies showed that the factors affecting the tensile creep of concrete are water-cement ratio, admixtures (e.g. fly ash, slag), stress level, humidity, temperature and aggregate [[28], [29], [30], [31]].Current studies on the creep of AAC has paid more attention to compression creep, and …
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Factors affecting the shrinkage of fly ash geopolymers
The results indicate that the shrinkage of geopolymers is strongly dependent on curing temperature and liquid-to-ash ratio. The increase in shrinkage is associated with the low …
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What are the Factors affecting unburnt carbon in fly ash
The formation of unburnt carbon depends on many factors viz., nature of fuel (reactivity): operational parameters (O2 level, residence time of coal particles inside the furnace, turbulence ...
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A mix design method of fly ash geopolymer …
This review aims to summarize the performance of fly ash based Zero Cement Concrete ( FA − ZCC ) according to the main parameters: Fly ash types (ASTM FA Class F and Class C ), precursor ...
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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 …
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