Utilization of fuel oil ash in injection solutions

Injection solutions are used to fix the soil in the underground constructions, which requires significant cement expenditure. The study has found that cement can be substituted with up to 40 % of ash from the high-sulphur fuel oil combustion by putting it into injection solutions. During the solutio...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2021-09, Vol.864 (1), p.12054
Main Authors: Tatarinov, V V, Zubrev, N I, Zhuravleva, M A, Ustinova, M V, Pashinin, V A
Format: Article
Language:English
Subjects:
Ash
Cement
Disproportionation
Fuel oil ash
Fuel oils
Germination
Injection
Nanoparticles
Phytotoxicity
Seeds
Sulfur
Underground construction
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Summary:Injection solutions are used to fix the soil in the underground constructions, which requires significant cement expenditure. The study has found that cement can be substituted with up to 40 % of ash from the high-sulphur fuel oil combustion by putting it into injection solutions. During the solution preparation, the ash releases up to 90% of sulphur. The sulphur in the alkaline solution undergoes disproportionation with the production of nanoparticles that fill the cavities in the crystallizing cement stone. This gives cement strength while its amount in the mixture is reduced. The modifier-ash solution ensures ecological safety, which has been proved by measuring phytotoxicity on the radish seeds Raphanus sativus germination.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/864/1/012054