Study of fly ash from power generating enterprises to use it as an alternative to lime mineral filler for the production of asphalt mixtures

published:
Number: Issue 24(2021)
Section: Construction and civil engineering
The page spacing of the article: 40–47
Keywords: road, аsphalt concrete, asphalt mixture, density, ecology, fly ashes, filler, compressive strength
How to quote an article: Volodymyr Kaskiv, Ivan Kopynets, Oleksii Sokolov. Study of fly ash from power generating enterprises to use it as an alternative to lime mineral filler for the production of asphalt mixtures. Dorogi і mosti [Roads and bridges]. 2021. Iss. 24. P. 40–47 [in Ukrainian].

Authors

State Enterprise «National Institute of Infrastructure Development» (SE «NIDI»), Kyiv, Ukraine
https://orcid.org/0000-0002-0908-4795
State Enterprise «National Institute for Development Іnfrastructure» (SE «NIDI»), Kyiv, Ukraine
https://orcid.org/0000-0002-8074-6798
State Enterprise «State Institute of Infrastructure Development» (SE «NIDI»), Kyiv, Ukraine
https://orcid.org/0000-0002-4694-9647

Summary

Introduction. Asphalt mixtures are one of the most widely used materials in the construction of roads. For the production of these mixtures, mainly conditioned mineral materials are used — coarse aggregate, fine aggregate and filler, and bitumen is used as a binder.

Problem statement. In Ukraine, the filler is mainly used material obtained by grinding the carbonate rocks, which is established in DSTU B V.2.7-119 and DSTU B V.2.7-121.

At the same time, as a result of coal combustion, millions of tons of dusty waste are generated at power generating plants of Ukraine - fly ashes and ashes from the hydraulic mine dump. These materials are close by grading to the requirements for the filler in accordance with DSTU B V.2.7-121 and probably can be used for the production of asphalt mixtures.

Purpose. Determination of the possibility of using the fly ashes for the production of asphalt mixtures.

Materials and methods. Type B asphalt concrete and mineral fillers of different origins were used during the research.

Results. Test results showed that the studied fly ashes can be used for the production of asphalt mixtures, because the complete replacement of limestone filler with fly ashes from the thermal power plants does not lead to the deterioration of asphalt mixtures properties.

References

  1. Sokolov OV, Zhelotobryukh AD, Kopynets IV, Kaskiv V.I. The use of industrial waste in road construction. Roads and bridges. Kiev, 2020. Edit. 21. P. 110-119 [in English].
  2. State target economic program for the development of public roads of state importance for 2018-2022. URL: https://zakon.rada.gov.ua/laws/show/382-2018-%D0%BF#Text [in Ukrainian].
  3. Order of the Cabinet of Ministers of Ukraine of December 4, 2019 № 1420-r «On the use of industrial waste in road construction.» URL: https://zakon.rada.gov.ua/laws/show/1420-2019- %D1%80#Text [in Ukrainian].