DOI: 10.5176/2251-1857_M312.35
Authors: Yiquan Liu, En-Hua Yang
Abstract: This paper evaluates the potential of reutilizing incineration fly ash (IFA) as raw materials for construction applications. The IFA is incorporated into a ground granulated blast-furnace slag (GGBS) geopolymer to evaluate its effect on mechanical strength and heavy metal leaching. The results show that the IFA studied in this paper is a filler material and it does not participate in the geopolymer reaction in the GGBS-IFA geopolymer system. The compressive strength of GGBS-IFA geopolymer reduces with increase of IFA replacement. However, the compressive strength of 60{6e6090cdd558c53a8bc18225ef4499fead9160abd3419ad4f137e902b483c465} IFA replacement GGBS geopolymer can still reach 16.6 MPa. GGBS geopolymer can effectively immobilize heavy metal in IFA. It is plausible the long term performance of heavy metal leaching of GGBS-IFA geopolymer can be satisfactory. It is concluded IFA may be incorporated into the GGBS geopolymer matrix and re-utilized as a construction material.
Keywords: Ground granulated blast-furnace slag (GGBS); geopolymer; incineration fly ash (IFA); mechanical strength; heavy metal leaching
Updating...