A Study on the Strength Development of Geopolymer Concrete using GGBS at Ambient Temperature
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2017, Vol 5, Issue 4
Abstract
Today Concrete usage around the globe is second only to water. The demand of concrete is increasing day by day and cement is used for satisfying the need of development of infrastructure facilities. The production of one ton of cement emits approximately one ton of carbon dioxide to the atmosphere. In order to reduce the use of cement a new generation concrete has been developed such as geopolymer concrete (GPC). Geopolymer is an excellent alternative material for cement concrete as it is produced from industrial by-products such as Flyash and GGBS replacing 100% of cement in concrete. Alkaline liquids are used for the binding of materials. In this paper, strength development of geopolymer concrete using GGBS along with activators such as sodium hydroxide (NaOH) and sodium silicate (Na2SiO3) has been used. 12 moles of sodium hydroxide solution is prepared before 24 hours of casting GPC. The optimum ratio of Na2SiO3/NaOH was determined by studying the strength development of GPC by varying the percentage of activator ratio such as 2:1, 2.5:1, 3:1, 3.5:1 and 4:1 by keeping the cement and w/c constant. The optimum activator ratio was found to be 2.5:1. Using this optimum ratio, 100mm cube specimen were casted for varying cement contents such as 450kg/m3 500kg/m3, 550kg/m3 keeping the w/c constant. The cubes were demoulded after 24 hours and cured in room temperature till the day of testing. The results showed that there was not much difference in the strength between these mixes and it was found that the specimen with GGBS 550kg/m3 gave better strength. The strength of GPC with GGBS content of 550kg/m3 was 71.67Mpa at 28 days.
Authors and Affiliations
Ramesh Babu C, Ganesan N, Ganesh Kumar R, Muthuramalingam R, Muthusamy Praveen A
Keywords
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