Strength and resistance to sulfate and sulfuric acid of ground fluidized bed combustion fly ash–silica fume alkali-activated composite
作者： Prinya Chindaprasirt , Pattanapong Paisitsrisawat , Ubolluk Rattanasak
DOI: 10.1016/J.APT.2014.02.007
关键词:
摘要: Abstract Fluidized bed combustion (FBC) is an environmentally friendly process for burning of coal and used in many small factories located urban area. The FBC fly ash environmental problem needs good disposal or utilization. This research studied the strength resistance to sulfate acid alkali-activated ash–silica fume composite. was interground with silica (at dosage levels 1.5%, 3.75% 5.0%) make source material homogenous increased reactivity. Addition enabled adjustment SiO 2 /Al O 3 ratios (6.55-7.54) composite improved showed optimum 28-day compressive 17.0 MPa. strengths immersed 5% magnesium solution 3% sulfuric solutions were substantially higher than control. loss from high calcium content incorporation thus durability
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