Surface modification of fly ash by mechano-chemical treatment
Source abstract
Abstract
Fly ash (FA), as an industry by-product has attracted much attention as a suitable supplier of silicon (Si) and aluminum (Al) in preparation of geopolymer for the sustainable environment and material science applications. Here, the effect of mechano-chemical (MC) treatment for surface modification of FA powder was systemically investigated by analyzing the size, surface morphology, crystal structure and dissolubility of Si and Al ions in alkali solutions. The dissolution dynamic as a function of MC treatment time is discussed in details and concluded with a recombination model of "grinding effect" and "activation effect", which can be well correlated with the change of surface morphology and crystal structure, respectively.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Concrete and Cement Materials Research · Recycling and utilization of industrial and municipal waste in materials production · Coal and Its By-products
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (20)
Show source-provided references
1. Fly ash disposal and utilization10.1002/jctb.280470402 ↗
2. Utilization and disposal of fly ash and other coal residues in terrestrial ecosystems: a review10.2134/jeq1980.00472425000900030001x ↗
3. Making concrete greener with fly ash
4. Leachate from land disposal of coal fly ash10.1177/0734242X9000800170 ↗
5. Physical and chemical properties of fly ash from coal- fired power plants with reference to environmental impact
6. Impacts of fly-ash on soil and plant responses10.1007/s10265-002-0057-3 ↗
7. Geopolymers and geopolymeric materials10.1007/BF01904446 ↗
8. Geopolymers: inorganic polymeric new materials10.1007/BF01912193 ↗
9. Davidovits · 2008 · 500
10. Resource recovery of waste fly ash: synthesis of zeolite-like materials10.1021/es00004a033 ↗
11. The effect of fly ash composition on the expansion of concrete due to alkali–silica reaction10.1016/S0008-8846(00)00283-0 ↗
12. Composition and microstructure of alkali activated fly ash binder: effect of the activator10.1016/j.cemconres.2005.03.003 ↗
13. Alkali-activated fly ashes: a cement for the future10.1016/S0008-8846(98)00243-9 ↗
14. Alkaline activation of fly ashes: nmr study of the reaction products10.1111/j.1551-2916.2004.01141.x ↗
15. Factors influencing The compressive strength of fly ash-based geopolymer concrete
16. On the development of fly ash-based geopolymer concrete
17. The mechanical properties of fly ash-based geopolymer concrete with alkaline activators10.1016/j.conbuildmat.2013.05.069 ↗
18. Effect of mechanical activation of fly ash on the properties of geopolymer cured at ambient temperature10.1016/j.jmatprotec.2009.03.016 ↗
19. Mechanical activation of fly ash: effect on reaction, structure and properties of resulting geopolymer10.1016/j.ceramint.2010.09.038 ↗
20. Improving reactivity of fly ash and properties of ensuing geopolymers through mechanical activation10.1016/j.conbuildmat.2014.01.095 ↗