·Fly ash FA is a by product of coal fired power generation in thermal power plant It is the dust discharged from the flue and collected by the dust collector after the raw coal is burned at high temperature in the coal fired boiler [6] The fly ash is mainly composed of SiO 2 Al 2 O 3 and has good pozzolanic can be used as silicon aluminum material for
·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
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
·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
·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 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
·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
·According to a survey released by the American Coal Ash Association ACAA [1] the US produced approximately million tons of fly ash in 2006 as a by product of coal combustion for energy 31 of the million tons of fly ash were reused in various applications with the balance disposed in landfills and storage lagoons at significant cost
Geopolymerization a fairly new technology based on a very old principle has emerged during the last few years as a possible solution to some waste stabilization and solidification problems Some commercial successes have been achieved although the technique remains fairly unknown as well as seemingly unpopular It has been shown that most waste materials containing sources
·Although there is a similar trend towards factors affecting the result of fly ash based geopolymer synthesis there is still remain a wide range in mixture proportion The considerable variation in fly ash characteristics as source material in the synthesis can very likely be one of the causes of this problem
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