Energy Savings and Environmental Benefits of Fly Ash Utilization as Partial Cement Replacement in the Process of Pavement Building

摘要

In this paper, the obtained results of fly ash exploitability testing as a partial cementrnreplacement into the concrete cover of pavement are presented. In accordance with thernproposed recipe the specified amount of cement in concrete mixture was replacedrnby 5-15% ENO fly ash. Fresh concrete mixture, compressive strength and combinedrnstresses strength after 7, 28 and 90 days of hardening composites as well as frost andrnchemical resistance were tested and compared with reference composite (the concrete ofrnclass C 30/37) which satisfies the Technical standards requirements. Results showedrnthat alternative utilization of FA have significant contribution in environmental as wellrnas in economic area.