Crack Growth Resistance in Fibre Reinforced Geopolymer Concrete Exposed to Sustained Extreme Temperatures

• DOI: 10.4028/www.scientific.net/kem.711.511
• Publication Date: 2016-09-23T13:41:27Z
• Authors: Vivek Bindiganavile; Jose R.A. Goncalves; Yaman Boluk
• Keywords: Cementitious; Geopolymer cement; Polypropylene; Sodium hydroxide

Portland cement concrete (PCC) is now second only to potable water in per capita consumption. And notwithstanding its numerous benefits, itself responsible for between 4 5% of the world’s manmade greenhouse gas emissions. In this context, geopolymer a promising alternative, wherein binder replaced entirely by supplementary cementitious materials triggered alkaline activators. Relatively little known on fracture response system, especially when exposed extreme temperatures. The study reported here focused crack growth such system prepared with Class F fly ash and reinforced steel polymeric fibres up 1% volume fraction. geopolymerization was effected blend sodium hydroxide silicate achieve compressive strength 30 MPa at 28 days. resulting subjected temperatures between-30 o C 300 C, sustained 2 hours. A fibre polypropylene mass ratio 4:1 incorporated. Based results, four different stages behaviour were identified superior efficiency seen sub-zero