Characterization & Durability Properties of Ultrafine Fly ash based Geopolymer Concrete
Author(s):
Pruthvi Sagar , Reva Institute Of Technology And Management Bangalore-560064, India; Dinesh HT, Civil-Aid Techno clinic Private Limited; Bhavana. B, Reva University Bangalore-560064, IndiaKeywords:
Geopolymer Concrete, Ultrafine Fly Ash, Metakoaline, GGBFS, Silica FumeAbstract:
Huge scale generation of cement is creating environmental issue on one hand and depletion of natural resources on the other hand. This danger to nature has prompted research being made of industrial byproducts as supplementary cementetious materials in making concrete for more green and durable. Fly ash and silica fume both are pozzolanic materials which have been broadly utilized for improving the properties like strength and durability in concrete. Silica fume demonstrates the greater pozzolanic activity then fly ash because of its finer particle size distribution, the pozzolanic activity of fly ash also can be enhanced by decreasing the particle size distribution. Geopolymer is a class of aluminosilicate binding materials integrated by thermal action of solid aluminosilicate based materials such as metakoaline, GGBFS, fly ash. Geopolymer get activated with the alkaline solution and heat. Sodium hydroxide and sodium silicate were utilized as an alkaline solution with a steady ratio of 2.5 and the mix is designed for molarity 10 for the work carried out. In the present study, an attempt has been made to explore the geopolymer concrete by utilizing ultrafine fly ash (UFFA) produced by air classification and processed GGBFS with varied proportions. Discusses on the properties of geopolymer concrete has also been mentioned. Compressive strength and durability tests like Permeability, Abrasion, Sorptivity, Acid and sulphate attack, Drying shrinkage were conducted. In this work geopolymer concrete was prepared with varying proportions of GGBS and UFFA in the ratio of 92.5:7.5 and 88:12 and 80:20. The maximum strength was achieved for the ratio 92.5:7.5. The obtained compressive strength is in the range of 36.5MPa to 91.6MPa from 1st day to 28th day of hot curing.
Other Details:
| Manuscript Id | : | J4RV2I5016 |
| Published in | : | Volume : 2, Issue : 5 |
| Publication Date | : | 01/08/2016 |
| Page(s) | : | 8-13 |
