1.0 History
Over the years there has been a growing demand for finer, more accurately sized and Quality Assured particulate-materials to meet the material specifications of industry. To some extent this has been due to a better understanding of the function that the complete particle size distribution of a material and not just some aspect of it contributes to the performance of a powder when applied to a particular process. The ash - produced Pulverised fuel ash( fly ash) / by product - quality varies widely dependant on fuel source and quality variations on plant design, combustion and dust collection processes, plant engineering and plant operational practice International Standards for Cement Replacement Materials dictate that chemical, physical and particle size characteristics should be controlled. These characteristics are not a part of all the Pulverised fuel ash produced by coal fired power stations. Hence it becomes necessary to Process the Pulverised fuel ash by using the technology that produces the product that confirms stringent requirements laid out by various international standards. The high performance concrete includes all those types of concrete with special requirements such workability, pump ability, high flow and higher retention in fresh state and high strength and high durability in Solid state. Classified fly ash has very high potential to produce all these types of Concrete effectively. At the same time one needs to ensure right Particle size as well as Particle size distribution which can only be achieved by state of art classification systems similar to one of those installed at Dirk India private Limited. By choosing right type of fly ash one can precise+ly produce High Volume fly ash mixes (Fly ash % above 40%) event at Low grade and normal grade concrete as well as normal replacement levels for High early strength mixes.

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