Studies on the Use of Fly Ash in Concrete for Energy Saving and to Promote Sustainability

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Studies On The Use Of Fly Ash In Concrete For Energy Saving And To Promote Sustainability

Studies on the Use of Fly Ash in Concrete for Energy Saving and to Promote Sustainability

Abstract

In this Studies On The Use Of Fly Ash In Concrete For Energy Saving And To Promote Sustainability paper, the obtained results of fly ash exploitability testing as a partial cement replacement into the concrete cover of pavement are presented. In accordance with the proposed recipe the specified amount of cement in concrete mixture was replaced by 5-15% ENO fly ash.

Fresh concrete mixture, compressive strength and combined stresses strength after 7, 28 and 90 days of hardening composites as well as frost and chemical resistance were tested and compared with reference composite (the concrete of class C 30/37) which satisfies the Technical standards requirements. Results showed that alternative utilization of FA have significant contribution in environmental as well as in economic area.

Conclusion

The development of new specifications and tests leads to reduction of amount material related problems when fly ash is used in concrete construction for transport infrastructure. Prospective opportunities of the coal fly ash utilization are in the road concrete production especially (whole road net measures almost 18000 kilometers in the Slovakia. Nowadays „boom“of road and highway construction evokes the necessity of further study of this subject.