Effect of some mineral admixtures on corrosion potential of steel reinforcement in Ultra-High Performance Concrete
This paper presents the investigation of the effect of mineral admixtures on corrosion of steel reinforcement embedded in Ultra-High Performance Concrete (UHPC). In this research, cement was partially replaced by silica fume (SF) (10% and 20%); fly ash (FA) (10% and 20%); Ground Granulated Blast Furnace Slag (GGBFS) (20% and 40% depending on weight of binder). The results indicate that sample of UHPC containing the mineral admixtures on corrosion perform better than those without mineral admixtures on corrosion inside and normal concrete samples (with compressive strength of about 30 MPa). The results show that the corrosion ability of steel reinforcement embedded in UHPC containing GGBFS and SF is lower than that using containing FA.
Received: January 10th, 2018; revised: January 24th, 2018; accepted: February 28th, 2018