Analysis of Coal Fly Ashes from Different Combustion Processes for The Agricultural Utilization

Hanum, Farrah Fadhillah; Pramudya, Yudhi; Chusna, Firda Mahira Alfiata; Desfitri, Erda Rahmilaila; Hapsauqi, Iqbal; Amrillah, Nafira Alfi Zaini

doi:10.55043/jaast.v7i2.79

Cited by 1 publication

(2 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The PANalytical Aeris instrument (Malvern PANalytical, Lelyweg 1, Almelo, Holandia) was used to investigate the phase composition of the base materials. Quantitative analysis was performed using the Rietveld method [29], which was implemented in the HighScore Plus software (version: 4.8, Malvern PANalytical B.V., Almelo, The Netherlands). The PDF-4+ database of the International Centre for Diffraction Data (ICDD) was used during the analysis.…”

Section: Chemical and Mineralogical Composition Of Precursorsmentioning

confidence: 99%

“…Unfortunately, these are raw materials that do not have fixed properties or chemical compositions. These properties depend on, among other things, the raw material used during the combustion process or the incineration technology used [4,29]. There is also the possibility of alkaline activation of other raw materials considered to be waste from mining, processing, and other industries, i.e., the energy industry.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application of Industrial Waste Materials by Alkaline Activation for Use as Geopolymer Binders

Setlak,

Mikuła,

Łach

2023

Materials

View full text Add to dashboard Cite

The purpose of this study is to synthesize geopolymer binders as an environmentally friendly alternative to conventional cement using available local raw materials. Waste materials such as chalcedonite (Ch), amphibolite (A), fly ash from lignite combustion (PB), and diatomite dust (D) calcined at 900 °C were used to produce geopolymer binders. Metakaolin (M) was used as an additional modifier for binders based on waste materials. The base materials were subjected to fluorescence X-ray fluorescence (XRF) analysis and X-ray diffractometry (XRD) to determine chemical and phase composition. A laser particle size analysis was also performed. The various mixtures of raw materials were activated with a 10 M solution of NaOH and sodium water glass and then annealed for 24 h at 60 °C. The produced geopolymer binders were conditioned for 28 days under laboratory conditions and then subjected to microstructural analysis (SEM) and flexural and compressive strength tests. The best compressive strength results were obtained by the Ch + PB samples—more than 57 MPa, while the lowest results were obtained by the Ch + D+A + M samples—more than 20 MPa. On the other hand, as a result of the flexural strength tests, the highest flexural results were obtained by D + A + M + PB binders—more than 12 MPa, and the lowest values were obtained by binders based on Ch + D+A + M—about 4.8 MPa.

show abstract

Section: Chemical and Mineralogical Composition Of Precursorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%