Title : STRENGTH AND DURABILITY OF FLY ASH-BASED FIBER-REINFORCED GEO-POLYMER CONCRETE IN A SIMULATED MARINE ENVIRONMENT D.V.
Authors : D.V. Reddy1, F.J. Martinez2 & K. Sobhan3
Publication : December 19-21, 2013
Volume :
Pages : 125-134
Price : 250
Abstract : This paper describes investigation of the corrosion durability of polyolefin fiber reinforced fly ash-based geo-polymer structural concrete (hereafter referred to as GPC, in contradistinction to unreinforced geo-polymer concrete referred to as simply geo-polymer concrete, ’ = 41 MPa), in which cement is completely replaced by fly ash, that is activated by alkalis, sodium hydroxide and sodium silicate. The durability in a marine environment is tested through an electrochemical method for accelerated corrosion. The fiber reinforced samples were made with polyolefin fibers in the amounts of 0.1%, 0.3%, and 0.5% by volume. After being subjected to corrosion damage, the GPC beam samples were analyzed through a method of crack scoring, steel mass loss, and residual flexural strength testing. The fiber reinforced GPC samples showed greater resistance to corrosion damage, with higher residual flexural strength, compared to those without fibers. This makes GPC an attractive material for use in marine structures.